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diff --git a/Documentation/btrfs-balance.8 b/Documentation/btrfs-balance.8 new file mode 100644 index 00000000..c686381c --- /dev/null +++ b/Documentation/btrfs-balance.8 @@ -0,0 +1,547 @@ +'\" t +.\" Title: btrfs-balance +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-BALANCE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-balance \- balance block groups on a btrfs filesystem +.SH "SYNOPSIS" +.sp +\fBbtrfs balance\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +The primary purpose of the balance feature is to spread block groups across all devices so they match constraints defined by the respective profiles\&. See \fBmkfs\&.btrfs\fR(8) section \fIPROFILES\fR for more details\&. The scope of the balancing process can be further tuned by use of filters that can select the block groups to process\&. Balance works only on a mounted filesystem\&. +.sp +The balance operation is cancellable by the user\&. The on\-disk state of the filesystem is always consistent so an unexpected interruption (eg\&. system crash, reboot) does not corrupt the filesystem\&. The progress of the balance operation is temporarily stored as an internal state and will be resumed upon mount, unless the mount option \fIskip_balance\fR is specified\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +running balance without filters will take a lot of time as it basically rewrites the entire filesystem and needs to update all block pointers\&. +.sp .5v +.RE +.sp +The filters can be used to perform following actions: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +convert block group profiles (filter +\fIconvert\fR) +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +make block group usage more compact (filter +\fIusage\fR) +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +perform actions only on a given device (filters +\fIdevid\fR, +\fIdrange\fR) +.RE +.sp +The filters can be applied to a combination of block group types (data, metadata, system)\&. Note that changing \fIsystem\fR needs the force option\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +the balance operation needs enough work space, ie\&. space that is completely unused in the filesystem, otherwise this may lead to ENOSPC reports\&. See the section \fIENOSPC\fR for more details\&. +.sp .5v +.RE +.SH "COMPATIBILITY" +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +The balance subcommand also exists under the \fBbtrfs filesystem\fR namespace\&. This still works for backward compatibility but is deprecated and should not be used any more\&. +.sp .5v +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +A short syntax \fBbtrfs balance \fR\fB\fI<path>\fR\fR works due to backward compatibility but is deprecated and should not be used any more\&. Use \fBbtrfs balance start\fR command instead\&. +.sp .5v +.RE +.SH "PERFORMANCE IMPLICATIONS" +.sp +Balancing operations are very IO intensive and can also be quite CPU intensive, impacting other ongoing filesystem operations\&. Typically large amounts of data are copied from one location to another, with corresponding metadata updates\&. +.sp +Depending upon the block group layout, it can also be seek heavy\&. Performance on rotational devices is noticeably worse compared to SSDs or fast arrays\&. +.SH "SUBCOMMAND" +.PP +\fBcancel\fR \fI<path>\fR +.RS 4 +cancels a running or paused balance, the command will block and wait until the current blockgroup being processed completes +.RE +.PP +\fBpause\fR \fI<path>\fR +.RS 4 +pause running balance operation, this will store the state of the balance progress and used filters to the filesystem +.RE +.PP +\fBresume\fR \fI<path>\fR +.RS 4 +resume interrupted balance, the balance status must be stored on the filesystem from previous run, eg\&. after it was forcibly interrupted and mounted again with +\fIskip_balance\fR +.RE +.PP +\fBstart\fR [options] \fI<path>\fR +.RS 4 +start the balance operation according to the specified filters, no filters will rewrite the entire filesystem\&. The process runs in the foreground\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +the balance command without filters will basically rewrite everything in the filesystem\&. The run time is potentially very long, depending on the filesystem size\&. To prevent starting a full balance by accident, the user is warned and has a few seconds to cancel the operation before it starts\&. The warning and delay can be skipped with +\fI\-\-full\-balance\fR +option\&. +.sp .5v +.RE +Please note that the filters must be written together with the +\fI\-d\fR, +\fI\-m\fR +and +\fI\-s\fR +options, because they\(cqre optional and bare +\fI\-d\fR +etc also work and mean no filters\&. +.sp +\fBOptions\fR +.PP +\-d[\fI<filters>\fR] +.RS 4 +act on data block groups, see +\fBFILTERS\fR +section for details about +\fIfilters\fR +.RE +.PP +\-m[\fI<filters>\fR] +.RS 4 +act on metadata chunks, see +\fBFILTERS\fR +section for details about +\fIfilters\fR +.RE +.PP +\-s[\fI<filters>\fR] +.RS 4 +act on system chunks (requires +\fI\-f\fR), see +\fBFILTERS\fR +section for details about +\fIfilters\fR\&. +.RE +.PP +\-v +.RS 4 +be verbose and print balance filter arguments +.RE +.PP +\-f +.RS 4 +force reducing of metadata integrity, eg\&. when going from +\fIraid1\fR +to +\fIsingle\fR +.RE +.PP +\-\-background|\-\-bg +.RS 4 +run the balance operation asynchronously in the background, uses +\fBfork\fR(2) to start the process that calls the kernel ioctl +.RE +.RE +.PP +\fBstatus\fR [\-v] \fI<path>\fR +.RS 4 +Show status of running or paused balance\&. +.sp +If +\fI\-v\fR +option is given, output will be verbose\&. +.RE +.SH "FILTERS" +.sp +From kernel 3\&.3 onwards, btrfs balance can limit its action to a subset of the whole filesystem, and can be used to change the replication configuration (e\&.g\&. moving data from single to RAID1)\&. This functionality is accessed through the \fI\-d\fR, \fI\-m\fR or \fI\-s\fR options to btrfs balance start, which filter on data, metadata and system blocks respectively\&. +.sp +A filter has the following structure: \fItype\fR[=\fIparams\fR][,\fItype\fR=\&...] +.sp +The available types are: +.PP +\fBprofiles=\fR\fB\fI<profiles>\fR\fR +.RS 4 +Balances only block groups with the given profiles\&. Parameters are a list of profile names separated by "\fI|\fR" (pipe)\&. +.RE +.PP +\fBusage=\fR\fB\fI<percent>\fR\fR, \fBusage=\fR\fB\fI<range>\fR\fR +.RS 4 +Balances only block groups with usage under the given percentage\&. The value of 0 is allowed and will clean up completely unused block groups, this should not require any new work space allocated\&. You may want to use +\fIusage=0\fR +in case balance is returning ENOSPC and your filesystem is not too full\&. +.sp +The argument may be a single value or a range\&. The single value +\fIN\fR +means +\fIat most N percent used\fR, equivalent to +\fI\&.\&.N\fR +range syntax\&. Kernels prior to 4\&.4 accept only the single value format\&. The minimum range boundary is inclusive, maximum is exclusive\&. +.RE +.PP +\fBdevid=\fR\fB\fI<id>\fR\fR +.RS 4 +Balances only block groups which have at least one chunk on the given device\&. To list devices with ids use +\fBbtrfs filesystem show\fR\&. +.RE +.PP +\fBdrange=\fR\fB\fI<range>\fR\fR +.RS 4 +Balance only block groups which overlap with the given byte range on any device\&. Use in conjunction with +\fIdevid\fR +to filter on a specific device\&. The parameter is a range specified as +\fIstart\&.\&.end\fR\&. +.RE +.PP +\fBvrange=\fR\fB\fI<range>\fR\fR +.RS 4 +Balance only block groups which overlap with the given byte range in the filesystem\(cqs internal virtual address space\&. This is the address space that most reports from btrfs in the kernel log use\&. The parameter is a range specified as +\fIstart\&.\&.end\fR\&. +.RE +.PP +\fBconvert=\fR\fB\fI<profile>\fR\fR +.RS 4 +Convert each selected block group to the given profile name identified by parameters\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +starting with kernel 4\&.5, the +\fIdata\fR +chunks can be converted to/from the +\fIDUP\fR +profile on a single device\&. +.sp .5v +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +starting with kernel 4\&.6, all profiles can be converted to/from +\fIDUP\fR +on multi\-device filesystems\&. +.sp .5v +.RE +.RE +.PP +\fBlimit=\fR\fB\fI<number>\fR\fR, \fBlimit=\fR\fB\fI<range>\fR\fR +.RS 4 +Process only given number of chunks, after all filters are applied\&. This can be used to specifically target a chunk in connection with other filters (\fIdrange\fR, +\fIvrange\fR) or just simply limit the amount of work done by a single balance run\&. +.sp +The argument may be a single value or a range\&. The single value +\fIN\fR +means +\fIat most N chunks\fR, equivalent to +\fI\&.\&.N\fR +range syntax\&. Kernels prior to 4\&.4 accept only the single value format\&. The range minimum and maximum are inclusive\&. +.RE +.PP +\fBstripes=\fR\fB\fI<range>\fR\fR +.RS 4 +Balance only block groups which have the given number of stripes\&. The parameter is a range specified as +\fIstart\&.\&.end\fR\&. Makes sense for block group profiles that utilize striping, ie\&. RAID0/10/5/6\&. The range minimum and maximum are inclusive\&. +.RE +.PP +\fBsoft\fR +.RS 4 +Takes no parameters\&. Only has meaning when converting between profiles\&. When doing convert from one profile to another and soft mode is on, chunks that already have the target profile are left untouched\&. This is useful e\&.g\&. when half of the filesystem was converted earlier but got cancelled\&. +.sp +The soft mode switch is (like every other filter) per\-type\&. For example, this means that we can convert metadata chunks the "hard" way while converting data chunks selectively with soft switch\&. +.RE +.sp +Profile names, used in \fIprofiles\fR and \fIconvert\fR are one of: \fIraid0\fR, \fIraid1\fR, \fIraid10\fR, \fIraid5\fR, \fIraid6\fR, \fIdup\fR, \fIsingle\fR\&. The mixed data/metadata profiles can be converted in the same way, but it\(cqs conversion between mixed and non\-mixed is not implemented\&. For the constraints of the profiles please refer to \fBmkfs\&.btrfs\fR(8), section \fIPROFILES\fR\&. +.SH "ENOSPC" +.sp +The way balance operates, it usually needs to temporarily create a new block group and move the old data there, before the old block group can be removed\&. For that it needs the work space, otherwise it fails for ENOSPC reasons\&. This is not the same ENOSPC as if the free space is exhausted\&. This refers to the space on the level of block groups, which are bigger parts of the filesystem that contain many file extents\&. +.sp +The free work space can be calculated from the output of the \fBbtrfs filesystem show\fR command: +.sp +.if n \{\ +.RS 4 +.\} +.nf + Label: \*(AqBTRFS\*(Aq uuid: 8a9d72cd\-ead3\-469d\-b371\-9c7203276265 + Total devices 2 FS bytes used 77\&.03GiB + devid 1 size 53\&.90GiB used 51\&.90GiB path /dev/sdc2 + devid 2 size 53\&.90GiB used 51\&.90GiB path /dev/sde1 +.fi +.if n \{\ +.RE +.\} +.sp +\fIsize\fR \- \fIused\fR = \fIfree work space\fR \fI53\&.90GiB\fR \- \fI51\&.90GiB\fR = \fI2\&.00GiB\fR +.sp +An example of a filter that does not require workspace is \fIusage=0\fR\&. This will scan through all unused block groups of a given type and will reclaim the space\&. After that it might be possible to run other filters\&. +.sp +\fBCONVERSIONS ON MULTIPLE DEVICES\fR +.sp +Conversion to profiles based on striping (RAID0, RAID5/6) require the work space on each device\&. An interrupted balance may leave partially filled block groups that consume the work space\&. +.SH "EXAMPLES" +.sp +A more comprehensive example when going from one to multiple devices, and back, can be found in section \fITYPICAL USECASES\fR of \fBbtrfs\-device\fR(8)\&. +.SS "MAKING BLOCK GROUP LAYOUT MORE COMPACT" +.sp +The layout of block groups is not normally visible; most tools report only summarized numbers of free or used space, but there are still some hints provided\&. +.sp +Let\(cqs use the following real life example and start with the output: +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs filesystem df /path +Data, single: total=75\&.81GiB, used=64\&.44GiB +System, RAID1: total=32\&.00MiB, used=20\&.00KiB +Metadata, RAID1: total=15\&.87GiB, used=8\&.84GiB +GlobalReserve, single: total=512\&.00MiB, used=0\&.00B +.fi +.if n \{\ +.RE +.\} +.sp +Roughly calculating for data, \fI75G \- 64G = 11G\fR, the used/total ratio is about \fI85%\fR\&. How can we can interpret that: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +chunks are filled by 85% on average, ie\&. the +\fIusage\fR +filter with anything smaller than 85 will likely not affect anything +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +in a more realistic scenario, the space is distributed unevenly, we can assume there are completely used chunks and the remaining are partially filled +.RE +.sp +Compacting the layout could be used on both\&. In the former case it would spread data of a given chunk to the others and removing it\&. Here we can estimate that roughly 850 MiB of data have to be moved (85% of a 1 GiB chunk)\&. +.sp +In the latter case, targeting the partially used chunks will have to move less data and thus will be faster\&. A typical filter command would look like: +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs balance start \-dusage=50 /path +Done, had to relocate 2 out of 97 chunks + +$ btrfs filesystem df /path +Data, single: total=74\&.03GiB, used=64\&.43GiB +System, RAID1: total=32\&.00MiB, used=20\&.00KiB +Metadata, RAID1: total=15\&.87GiB, used=8\&.84GiB +GlobalReserve, single: total=512\&.00MiB, used=0\&.00B +.fi +.if n \{\ +.RE +.\} +.sp +As you can see, the \fItotal\fR amount of data is decreased by just 1 GiB, which is an expected result\&. Let\(cqs see what will happen when we increase the estimated usage filter\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs balance start \-dusage=85 /path +Done, had to relocate 13 out of 95 chunks + +$ btrfs filesystem df /path +Data, single: total=68\&.03GiB, used=64\&.43GiB +System, RAID1: total=32\&.00MiB, used=20\&.00KiB +Metadata, RAID1: total=15\&.87GiB, used=8\&.85GiB +GlobalReserve, single: total=512\&.00MiB, used=0\&.00B +.fi +.if n \{\ +.RE +.\} +.sp +Now the used/total ratio is about 94% and we moved about \fI74G \- 68G = 6G\fR of data to the remaining blockgroups, ie\&. the 6GiB are now free of filesystem structures, and can be reused for new data or metadata block groups\&. +.sp +We can do a similar exercise with the metadata block groups, but this should not typically be necessary, unless the used/total ratio is really off\&. Here the ratio is roughly 50% but the difference as an absolute number is "a few gigabytes", which can be considered normal for a workload with snapshots or reflinks updated frequently\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs balance start \-musage=50 /path +Done, had to relocate 4 out of 89 chunks + +$ btrfs filesystem df /path +Data, single: total=68\&.03GiB, used=64\&.43GiB +System, RAID1: total=32\&.00MiB, used=20\&.00KiB +Metadata, RAID1: total=14\&.87GiB, used=8\&.85GiB +GlobalReserve, single: total=512\&.00MiB, used=0\&.00B +.fi +.if n \{\ +.RE +.\} +.sp +Just 1 GiB decrease, which possibly means there are block groups with good utilization\&. Making the metadata layout more compact would in turn require updating more metadata structures, ie\&. lots of IO\&. As running out of metadata space is a more severe problem, it\(cqs not necessary to keep the utilization ratio too high\&. For the purpose of this example, let\(cqs see the effects of further compaction: +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs balance start \-musage=70 /path +Done, had to relocate 13 out of 88 chunks + +$ btrfs filesystem df \&. +Data, single: total=68\&.03GiB, used=64\&.43GiB +System, RAID1: total=32\&.00MiB, used=20\&.00KiB +Metadata, RAID1: total=11\&.97GiB, used=8\&.83GiB +GlobalReserve, single: total=512\&.00MiB, used=0\&.00B +.fi +.if n \{\ +.RE +.\} +.SS "GETTING RID OF COMPLETELY UNUSED BLOCK GROUPS" +.sp +Normally the balance operation needs a work space, to temporarily move the data before the old block groups gets removed\&. If there\(cqs no work space, it ends with \fIno space left\fR\&. +.sp +There\(cqs a special case when the block groups are completely unused, possibly left after removing lots of files or deleting snapshots\&. Removing empty block groups is automatic since 3\&.18\&. The same can be achieved manually with a notable exception that this operation does not require the work space\&. Thus it can be used to reclaim unused block groups to make it available\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs balance start \-dusage=0 /path +.fi +.if n \{\ +.RE +.\} +.sp +This should lead to decrease in the \fItotal\fR numbers in the \fBbtrfs filesystem df\fR output\&. +.SH "EXIT STATUS" +.sp +\fBbtrfs balance\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-device\fR(8) diff --git a/Documentation/btrfs-check.8 b/Documentation/btrfs-check.8 new file mode 100644 index 00000000..da562a57 --- /dev/null +++ b/Documentation/btrfs-check.8 @@ -0,0 +1,230 @@ +'\" t +.\" Title: btrfs-check +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-CHECK" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-check \- check or repair a btrfs filesystem +.SH "SYNOPSIS" +.sp +\fBbtrfs check\fR [options] \fI<device>\fR +.SH "DESCRIPTION" +.sp +The filesystem checker is used to verify structural integrity of a filesystem and attempt to repair it if requested\&. It is recommended to unmount the filesystem prior to running the check, but it is possible to start checking a mounted filesystem (see \fI\-\-force\fR)\&. +.sp +By default, \fBbtrfs check\fR will not modify the device but you can reaffirm that by the option \fI\-\-readonly\fR\&. +.sp +\fBbtrfsck\fR is an alias of \fBbtrfs check\fR command and is now deprecated\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +Do not use \fI\-\-repair\fR unless you are advised to do so by a developer or an experienced user, and then only after having accepted that no \fIfsck\fR successfully repair all types of filesystem corruption\&. Eg\&. some other software or hardware bugs can fatally damage a volume\&. +.sp .5v +.RE +.sp +The structural integrity check verifies if internal filesystem objects or data structures satisfy the constraints, point to the right objects or are correctly connected together\&. +.sp +There are several cross checks that can detect wrong reference counts of shared extents, backreferences, missing extents of inodes, directory and inode connectivity etc\&. +.sp +The amount of memory required can be high, depending on the size of the filesystem, similarly the run time\&. +.SH "SAFE OR ADVISORY OPTIONS" +.PP +\-b|\-\-backup +.RS 4 +use the first valid set of backup roots stored in the superblock +.sp +This can be combined with +\fI\-\-super\fR +if some of the superblocks are damaged\&. +.RE +.PP +\-\-check\-data\-csum +.RS 4 +verify checksums of data blocks +.sp +This expects that the filesystem is otherwise OK, and is basically and offline +\fIscrub\fR +but does not repair data from spare copies\&. +.RE +.PP +\-\-chunk\-root \fI<bytenr>\fR +.RS 4 +use the given offset +\fIbytenr\fR +for the chunk tree root +.RE +.PP +\-E|\-\-subvol\-extents \fI<subvolid>\fR +.RS 4 +show extent state for the given subvolume +.RE +.PP +\-p|\-\-progress +.RS 4 +indicate progress at various checking phases +.RE +.PP +\-Q|\-\-qgroup\-report +.RS 4 +verify qgroup accounting and compare against filesystem accounting +.RE +.PP +\-r|\-\-tree\-root \fI<bytenr>\fR +.RS 4 +use the given offset +\fIbytenr\fR +for the tree root +.RE +.PP +\-\-readonly +.RS 4 +(default) run in read\-only mode, this option exists to calm potential panic when users are going to run the checker +.RE +.PP +\-s|\-\-super \fI<superblock>\fR +.RS 4 +use \*(Aqsuperblock\(cqth superblock copy, valid values are 0, 1 or 2 if the respective superblock offset is within the device size +.sp +This can be used to use a different starting point if some of the primary superblock is damaged\&. +.RE +.PP +\-\-clear\-space\-cache v1|v2 +.RS 4 +completely wipe all free space cache of given type +.sp +For free space cache +\fIv1\fR, the +\fIclear_cache\fR +kernel mount option only rebuilds the free space cache for block groups that are modified while the filesystem is mounted with that option\&. Thus, using this option with +\fIv1\fR +makes it possible to actually clear the entire free space cache\&. +.sp +For free space cache +\fIv2\fR, the +\fIclear_cache\fR +kernel mount option destroys the entire free space cache\&. This option, with +\fIv2\fR +provides an alternative method of clearing the free space cache that doesn\(cqt require mounting the filesystem\&. +.RE +.SH "DANGEROUS OPTIONS" +.PP +\-\-repair +.RS 4 +enable the repair mode and attempt to fix problems where possible +.RE +.PP +\-\-init\-csum\-tree +.RS 4 +create a new checksum tree and recalculate checksums in all files +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +Do not blindly use this option to fix checksum mismatch problems\&. +.sp .5v +.RE +.RE +.PP +\-\-init\-extent\-tree +.RS 4 +build the extent tree from scratch +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +Do not use unless you know what you\(cqre doing\&. +.sp .5v +.RE +.RE +.PP +\-\-mode=MODE +.RS 4 +select mode of operation regarding memory and IO +.sp +The +\fIMODE\fR +can be one of +\fIoriginal\fR +and +\fIlowmem\fR\&. The original mode is mostly unoptimized regarding memory consumption and can lead to out\-of\-memory conditions on large filesystems\&. The possible workaround is to export the block device over network to a machine with enough memory\&. The low memory mode is supposed to address the memory consumption, at the cost of increased IO when it needs to re\-read blocks when needed\&. This may increase run time\&. +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +\fIlowmem\fR mode does not work with \fI\-\-repair\fR yet, and is still considered experimental\&. +.sp .5v +.RE +.PP +\-\-force +.RS 4 +allow work on a mounted filesystem\&. Note that this should work fine on a quiescent or read\-only mounted filesystem but may crash if the device is changed externally, eg\&. by the kernel module\&. Repair without mount checks is not supported right now\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs check\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-scrub\fR(8), \fBbtrfs\-rescue\fR(8) diff --git a/Documentation/btrfs-convert.8 b/Documentation/btrfs-convert.8 new file mode 100644 index 00000000..7b5239ab --- /dev/null +++ b/Documentation/btrfs-convert.8 @@ -0,0 +1,217 @@ +'\" t +.\" Title: btrfs-convert +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-CONVERT" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-convert \- convert from ext2/3/4 or reiserfs filesystem to btrfs in\-place +.SH "SYNOPSIS" +.sp +\fBbtrfs\-convert\fR [options] \fI<device>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs\-convert\fR is used to convert existing source filesystem image to a btrfs filesystem in\-place\&. The original filesystem image is accessible in subvolume named like \fIext2_saved\fR as file \fIimage\fR\&. +.sp +Supported filesystems: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +ext2, ext3, ext4 \(em original feature, always built in +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +reiserfs \(em since version 4\&.13, optionally built, requires libreiserfscore 3\&.6\&.27 +.RE +.sp +The list of supported source filesystem by a given binary is listed at the end of help (option \fI\-\-help\fR)\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +If you are going to perform rollback to the original filesystem, you should not execute \fBbtrfs balance\fR command on the converted filesystem\&. This will change the extent layout and make \fBbtrfs\-convert\fR unable to rollback\&. +.sp .5v +.RE +.sp +The conversion utilizes free space of the original filesystem\&. The exact estimate of the required space cannot be foretold\&. The final btrfs metadata might occupy several gigabytes on a hundreds\-gigabyte filesystem\&. +.sp +If the ability to rollback is no longer important, the it is recommended to perform a few more steps to transition the btrfs filesystem to a more compact layout\&. This is because the conversion inherits the original data blocks\*(Aq fragmentation, and also because the metadata blocks are bound to the original free space layout\&. +.sp +Due to different constraints, it is only possible to convert filesystems that have a supported data block size (ie\&. the same that would be valid for \fImkfs\&.btrfs\fR)\&. This is typically the system page size (4KiB on x86_64 machines)\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +The source filesystem should be clean, you are encouraged to run the \fIfsck\fR tool if you\(cqre not sure\&. +.sp .5v +.RE +.sp +\fBREMOVE THE ORIGINAL FILESYSTEM METADATA\fR +.sp +By removing the subvolume named like \fIext2_saved\fR or \fIreiserfs_saved\fR, all metadata of the original filesystem will be removed: +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs subvolume delete /mnt/ext2_saved +.fi +.if n \{\ +.RE +.\} +.sp +At this point it is not possible to do a rollback\&. The filesystem is usable but may be impacted by the fragmentation inherited from the original filesystem\&. +.sp +\fBMAKE FILE DATA MORE CONTIGUOUS\fR +.sp +An optional but recommended step is to run defragmentation on the entire filesystem\&. This will attempt to make file extents more contiguous\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs filesystem defrag \-v \-r \-f \-t 32M /mnt/btrfs +.fi +.if n \{\ +.RE +.\} +.sp +Verbose recursive defragmentation (\fI\-v\fR, \fI\-r\fR), flush data per\-file (\fI\-f\fR) with target extent size 32MiB (\fI\-t\fR)\&. +.sp +\fBATTEMPT TO MAKE BTRFS METADATA MORE COMPACT\fR +.sp +Optional but recommended step\&. +.sp +The metadata block groups after conversion may be smaller than the default size (256MiB or 1GiB)\&. Running a balance will attempt to merge the block groups\&. This depends on the free space layout (and fragmentation) and may fail due to lack of enough work space\&. This is a soft error leaving the filesystem usable but the block group layout may remain unchanged\&. +.sp +Note that balance operation takes a lot of time, please see also \fBbtrfs\-balance\fR(8)\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +# btrfs balance start \-m /mnt/btrfs +.fi +.if n \{\ +.RE +.\} +.SH "OPTIONS" +.PP +\-d|\-\-no\-datasum +.RS 4 +disable data checksum calculations and set the NODATASUM file flag, this can speed up the conversion +.RE +.PP +\-i|\-\-no\-xattr +.RS 4 +ignore xattrs and ACLs of files +.RE +.PP +\-n|\-\-no\-inline +.RS 4 +disable inlining of small files to metadata blocks, this will decrease the metadata consumption and may help to convert a filesystem with low free space +.RE +.PP +\-N|\-\-nodesize \fI<SIZE>\fR +.RS 4 +set filesystem nodesize, the tree block size in which btrfs stores its metadata\&. The default value is 16KB (16384) or the page size, whichever is bigger\&. Must be a multiple of the sectorsize, but not larger than 65536\&. See +\fBmkfs\&.btrfs\fR(8) for more details\&. +.RE +.PP +\-r|\-\-rollback +.RS 4 +rollback to the original ext2/3/4 filesystem if possible +.RE +.PP +\-l|\-\-label \fI<LABEL>\fR +.RS 4 +set filesystem label during conversion +.RE +.PP +\-L|\-\-copy\-label +.RS 4 +use label from the converted filesystem +.RE +.PP +\-O|\-\-features \fI<feature1>\fR[,\fI<feature2>\fR\&...] +.RS 4 +A list of filesystem features enabled the at time of conversion\&. Not all features are supported by old kernels\&. To disable a feature, prefix it with +\fI^\fR\&. Description of the features is in section +\fIFILESYSTEM FEATURES\fR +of +\fBmkfs\&.btrfs\fR(8)\&. +.sp +To see all available features that btrfs\-convert supports run: +.sp +\fBbtrfs\-convert \-O list\-all\fR +.RE +.PP +\-p|\-\-progress +.RS 4 +show progress of conversion (a heartbeat indicator and number of inodes processed), on by default +.RE +.PP +\-\-no\-progress +.RS 4 +disable progress and show only the main phases of conversion +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs\-convert\fR will return 0 if no error happened\&. If any problems happened, 1 will be returned\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/btrfs-device.8 b/Documentation/btrfs-device.8 new file mode 100644 index 00000000..082e66a5 --- /dev/null +++ b/Documentation/btrfs-device.8 @@ -0,0 +1,410 @@ +'\" t +.\" Title: btrfs-device +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-DEVICE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-device \- manage devices of btrfs filesystems +.SH "SYNOPSIS" +.sp +\fBbtrfs device\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +The \fBbtrfs device\fR command group is used to manage devices of the btrfs filesystems\&. +.SH "DEVICE MANAGEMENT" +.sp +Btrfs filesystem can be created on top of single or multiple block devices\&. Data and metadata are organized in allocation profiles with various redundancy policies\&. There\(cqs some similarity with traditional RAID levels, but this could be confusing to users familiar with the traditional meaning\&. Due to the similarity, the RAID terminology is widely used in the documentation\&. See \fBmkfs\&.btrfs\fR(8) for more details and the exact profile capabilities and constraints\&. +.sp +The device management works on a mounted filesystem\&. Devices can be added, removed or replaced, by commands provided by \fBbtrfs device\fR and \fBbtrfs replace\fR\&. +.sp +The profiles can be also changed, provided there\(cqs enough workspace to do the conversion, using the \fBbtrfs balance\fR command and namely the filter \fIconvert\fR\&. +.PP +Profile +.RS 4 +A profile describes an allocation policy based on the redundancy/replication constraints in connection with the number of devices\&. The profile applies to data and metadata block groups separately\&. +.RE +.PP +RAID level +.RS 4 +Where applicable, the level refers to a profile that matches constraints of the standard RAID levels\&. At the moment the supported ones are: RAID0, RAID1, RAID10, RAID5 and RAID6\&. +.RE +.sp +See the section \fBTYPICAL USECASES\fR for some examples\&. +.SH "SUBCOMMAND" +.PP +\fBadd\fR [\-Kf] \fI<device>\fR [\fI<device>\fR\&...] \fI<path>\fR +.RS 4 +Add device(s) to the filesystem identified by +\fI<path>\fR\&. +.sp +If applicable, a whole device discard (TRIM) operation is performed prior to adding the device\&. A device with existing filesystem detected by +\fBblkid\fR(8) will prevent device addition and has to be forced\&. Alternatively the filesystem can be wiped from the device using eg\&. the +\fBwipefs\fR(8) tool\&. +.sp +The operation is instant and does not affect existing data\&. The operation merely adds the device to the filesystem structures and creates some block groups headers\&. +.sp +\fBOptions\fR +.PP +\-K|\-\-nodiscard +.RS 4 +do not perform discard (TRIM) by default +.RE +.PP +\-f|\-\-force +.RS 4 +force overwrite of existing filesystem on the given disk(s) +.RE +.RE +.PP +\fBremove\fR \fI<device>\fR|\fI<devid>\fR [\fI<device>\fR|\fI<devid>\fR\&...] \fI<path>\fR +.RS 4 +Remove device(s) from a filesystem identified by +\fI<path>\fR +.sp +Device removal must satisfy the profile constraints, otherwise the command fails\&. The filesystem must be converted to profile(s) that would allow the removal\&. This can typically happen when going down from 2 devices to 1 and using the RAID1 profile\&. See the +\fBTYPICAL USECASES\fR +section below\&. +.sp +The operation can take long as it needs to move all data from the device\&. +.sp +It is possible to delete the device that was used to mount the filesystem\&. The device entry in the mount table will be replaced by another device name with the lowest device id\&. +.sp +If the filesystem is mounted in degraded mode (\-o degraded), special term +\fImissing\fR +can be used for +\fIdevice\fR\&. In that case, the first device that is described by the filesystem metadata, but not present at the mount time will be removed\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +In most cases, there is only one missing device in degraded mode, otherwise mount fails\&. If there are two or more devices missing (e\&.g\&. possible in RAID6), you need specify +\fImissing\fR +as many times as the number of missing devices to remove all of them\&. +.sp .5v +.RE +.RE +.PP +\fBdelete\fR \fI<device>\fR|\fI<devid>\fR [\fI<device>\fR|\fI<devid>\fR\&...] \fI<path>\fR +.RS 4 +Alias of remove kept for backward compatibility +.RE +.PP +\fBready\fR \fI<device>\fR +.RS 4 +Wait until all devices of a multiple\-device filesystem are scanned and registered within the kernel module\&. This is to provide a way for automatic filesystem mounting tools to wait before the mount can start\&. The device scan is only one of the preconditions and the mount can fail for other reasons\&. Normal users usually do not need this command and may safely ignore it\&. +.RE +.PP +\fBscan\fR [(\-\-all\-devices|\-d)|\fI<device>\fR [\fI<device>\fR\&...]] +.RS 4 +Scan devices for a btrfs filesystem and register them with the kernel module\&. This allows mounting multiple\-device filesystem by specifying just one from the whole group\&. +.sp +If no devices are passed, all block devices that blkid reports to contain btrfs are scanned\&. +.sp +The options +\fI\-\-all\-devices\fR +or +\fI\-d\fR +are deprecated and kept for backward compatibility\&. If used, behavior is the same as if no devices are passed\&. +.sp +The command can be run repeatedly\&. Devices that have been already registered remain as such\&. Reloading the kernel module will drop this information\&. There\(cqs an alternative way of mounting multiple\-device filesystem without the need for prior scanning\&. See the mount option +\fIdevice\fR\&. +.RE +.PP +\fBstats\fR [options] \fI<path>\fR|\fI<device>\fR +.RS 4 +Read and print the device IO error statistics for all devices of the given filesystem identified by +\fI<path>\fR +or for a single +\fI<device>\fR\&. The filesystem must be mounted\&. See section +\fBDEVICE STATS\fR +for more information about the reported statistics and the meaning\&. +.sp +\fBOptions\fR +.PP +\-z|\-\-reset +.RS 4 +Print the stats and reset the values to zero afterwards\&. +.RE +.PP +\-c|\-\-check +.RS 4 +Check if the stats are all zeros and return 0 if it is so\&. Set bit 6 of the return code if any of the statistics is no\-zero\&. The error values is 65 if reading stats from at least one device failed, otherwise it\(cqs 64\&. +.RE +.RE +.PP +\fBusage\fR [options] \fI<path>\fR [\fI<path>\fR\&...] +.RS 4 +Show detailed information about internal allocations in devices\&. +.sp +\fBOptions\fR +.PP +\-b|\-\-raw +.RS 4 +raw numbers in bytes, without the +\fIB\fR +suffix +.RE +.PP +\-h|\-\-human\-readable +.RS 4 +print human friendly numbers, base 1024, this is the default +.RE +.PP +\-H +.RS 4 +print human friendly numbers, base 1000 +.RE +.PP +\-\-iec +.RS 4 +select the 1024 base for the following options, according to the IEC standard +.RE +.PP +\-\-si +.RS 4 +select the 1000 base for the following options, according to the SI standard +.RE +.PP +\-k|\-\-kbytes +.RS 4 +show sizes in KiB, or kB with \-\-si +.RE +.PP +\-m|\-\-mbytes +.RS 4 +show sizes in MiB, or MB with \-\-si +.RE +.PP +\-g|\-\-gbytes +.RS 4 +show sizes in GiB, or GB with \-\-si +.RE +.PP +\-t|\-\-tbytes +.RS 4 +show sizes in TiB, or TB with \-\-si +.RE +.RE +.sp +If conflicting options are passed, the last one takes precedence\&. +.SH "TYPICAL USECASES" +.SS "STARTING WITH A SINGLE\-DEVICE FILESYSTEM" +.sp +Assume we\(cqve created a filesystem on a block device \fI/dev/sda\fR with profile \fIsingle/single\fR (data/metadata), the device size is 50GiB and we\(cqve used the whole device for the filesystem\&. The mount point is \fI/mnt\fR\&. +.sp +The amount of data stored is 16GiB, metadata have allocated 2GiB\&. +.sp +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBADD NEW DEVICE\fR +.RS 4 +.sp +We want to increase the total size of the filesystem and keep the profiles\&. The size of the new device \fI/dev/sdb\fR is 100GiB\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs device add /dev/sdb /mnt +.fi +.if n \{\ +.RE +.\} +.sp +The amount of free data space increases by less than 100GiB, some space is allocated for metadata\&. +.RE +.sp +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBCONVERT TO RAID1\fR +.RS 4 +.sp +Now we want to increase the redundancy level of both data and metadata, but we\(cqll do that in steps\&. Note, that the device sizes are not equal and we\(cqll use that to show the capabilities of split data/metadata and independent profiles\&. +.sp +The constraint for RAID1 gives us at most 50GiB of usable space and exactly 2 copies will be stored on the devices\&. +.sp +First we\(cqll convert the metadata\&. As the metadata occupy less than 50GiB and there\(cqs enough workspace for the conversion process, we can do: +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs balance start \-mconvert=raid1 /mnt +.fi +.if n \{\ +.RE +.\} +.sp +This operation can take a while, because all metadata have to be moved and all block pointers updated\&. Depending on the physical locations of the old and new blocks, the disk seeking is the key factor affecting performance\&. +.sp +You\(cqll note that the system block group has been also converted to RAID1, this normally happens as the system block group also holds metadata (the physical to logical mappings)\&. +.sp +What changed: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +available data space decreased by 3GiB, usable roughly (50 \- 3) + (100 \- 3) = 144 GiB +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +metadata redundancy increased +.RE +.sp +IOW, the unequal device sizes allow for combined space for data yet improved redundancy for metadata\&. If we decide to increase redundancy of data as well, we\(cqre going to lose 50GiB of the second device for obvious reasons\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs balance start \-dconvert=raid1 /mnt +.fi +.if n \{\ +.RE +.\} +.sp +The balance process needs some workspace (ie\&. a free device space without any data or metadata block groups) so the command could fail if there\(cqs too much data or the block groups occupy the whole first device\&. +.sp +The device size of \fI/dev/sdb\fR as seen by the filesystem remains unchanged, but the logical space from 50\-100GiB will be unused\&. +.RE +.sp +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBREMOVE DEVICE\fR +.RS 4 +.sp +Device removal must satisfy the profile constraints, otherwise the command fails\&. For example: +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs device remove /dev/sda /mnt +ERROR: error removing device \*(Aq/dev/sda\*(Aq: unable to go below two devices on raid1 +.fi +.if n \{\ +.RE +.\} +.sp +In order to remove a device, you need to convert the profile in this case: +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs balance start \-mconvert=dup \-dconvert=single /mnt +$ btrfs device remove /dev/sda /mnt +.fi +.if n \{\ +.RE +.\} +.RE +.SH "DEVICE STATS" +.sp +The device stats keep persistent record of several error classes related to doing IO\&. The current values are printed at mount time and updated during filesystem lifetime or from a scrub run\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs device stats /dev/sda3 +[/dev/sda3]\&.write_io_errs 0 +[/dev/sda3]\&.read_io_errs 0 +[/dev/sda3]\&.flush_io_errs 0 +[/dev/sda3]\&.corruption_errs 0 +[/dev/sda3]\&.generation_errs 0 +.fi +.if n \{\ +.RE +.\} +.PP +write_io_errs +.RS 4 +Failed writes to the block devices, means that the layers beneath the filesystem were not able to satisfy the write request\&. +.RE +.PP +read_io_errors +.RS 4 +Read request analogy to write_io_errs\&. +.RE +.PP +flush_io_errs +.RS 4 +Number of failed writes with the +\fIFLUSH\fR +flag set\&. The flushing is a method of forcing a particular order between write requests and is crucial for implementing crash consistency\&. In case of btrfs, all the metadata blocks must be permanently stored on the block device before the superblock is written\&. +.RE +.PP +corruption_errs +.RS 4 +A block checksum mismatched or a corrupted metadata header was found\&. +.RE +.PP +generation_errs +.RS 4 +The block generation does not match the expected value (eg\&. stored in the parent node)\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs device\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.sp +If the \fI\-s\fR option is used, \fBbtrfs device stats\fR will add 64 to the exit status if any of the error counters is non\-zero\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-replace\fR(8), \fBbtrfs\-balance\fR(8) diff --git a/Documentation/btrfs-filesystem.8 b/Documentation/btrfs-filesystem.8 new file mode 100644 index 00000000..94e4647d --- /dev/null +++ b/Documentation/btrfs-filesystem.8 @@ -0,0 +1,686 @@ +'\" t +.\" Title: btrfs-filesystem +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-FILESYSTEM" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-filesystem \- command group that primarily does work on the whole filesystems +.SH "SYNOPSIS" +.sp +\fBbtrfs filesystem\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs filesystem\fR is used to perform several whole filesystem level tasks, including all the regular filesystem operations like resizing, space stats, label setting/getting, and defragmentation\&. There are other whole filesystem tasks like scrub or balance that are grouped in separate commands\&. +.SH "SUBCOMMAND" +.PP +\fBdf\fR [options] \fI<path>\fR +.RS 4 +Show a terse summary information about allocation of block group types of a given mount point\&. The original purpose of this command was a debugging helper\&. The output needs to be further interpreted and is not suitable for quick overview\&. +.sp +An example with description: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +device size: +\fI1\&.9TiB\fR, one device, no RAID +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +filesystem size: +\fI1\&.9TiB\fR +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +created with: +\fImkfs\&.btrfs \-d single \-m single\fR +.RE +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs filesystem df /path +Data, single: total=1\&.15TiB, used=1\&.13TiB +System, single: total=32\&.00MiB, used=144\&.00KiB +Metadata, single: total=12\&.00GiB, used=6\&.45GiB +GlobalReserve, single: total=512\&.00MiB, used=0\&.00B +.fi +.if n \{\ +.RE +.\} +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fIData\fR, +\fISystem\fR +and +\fIMetadata\fR +are separate block group types\&. +\fIGlobalReserve\fR +is an artificial and internal emergency space, see below\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fIsingle\fR \(em the allocation profile, defined at mkfs time +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fItotal\fR \(em sum of space reserved for all allocation profiles of the given type, ie\&. all Data/single\&. Note that it\(cqs not total size of filesystem\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fIused\fR \(em sum of used space of the above, ie\&. file extents, metadata blocks +.RE +.sp +\fIGlobalReserve\fR +is an artificial and internal emergency space\&. It is used eg\&. when the filesystem is full\&. Its +\fItotal\fR +size is dynamic based on the filesystem size, usually not larger than 512MiB, +\fIused\fR +may fluctuate\&. +.sp +The GlobalReserve is a portion of Metadata\&. In case the filesystem metadata is exhausted, +\fIGlobalReserve/total + Metadata/used = Metadata/total\fR\&. Otherwise there appears to be some unused space of Metadata\&. +.sp +\fBOptions\fR +.PP +\-b|\-\-raw +.RS 4 +raw numbers in bytes, without the +\fIB\fR +suffix +.RE +.PP +\-h|\-\-human\-readable +.RS 4 +print human friendly numbers, base 1024, this is the default +.RE +.PP +\-H +.RS 4 +print human friendly numbers, base 1000 +.RE +.PP +\-\-iec +.RS 4 +select the 1024 base for the following options, according to the IEC standard +.RE +.PP +\-\-si +.RS 4 +select the 1000 base for the following options, according to the SI standard +.RE +.PP +\-k|\-\-kbytes +.RS 4 +show sizes in KiB, or kB with \-\-si +.RE +.PP +\-m|\-\-mbytes +.RS 4 +show sizes in MiB, or MB with \-\-si +.RE +.PP +\-g|\-\-gbytes +.RS 4 +show sizes in GiB, or GB with \-\-si +.RE +.PP +\-t|\-\-tbytes +.RS 4 +show sizes in TiB, or TB with \-\-si +.sp +If conflicting options are passed, the last one takes precedence\&. +.RE +.RE +.PP +\fBdefragment\fR [options] \fI<file>\fR|\fI<dir>\fR [\fI<file>\fR|\fI<dir>\fR\&...] +.RS 4 +Defragment file data on a mounted filesystem\&. Requires kernel 2\&.6\&.33 and newer\&. +.sp +If +\fI\-r\fR +is passed, files in dir will be defragmented recursively\&. The start position and the number of bytes to defragment can be specified by start and length using +\fI\-s\fR +and +\fI\-l\fR +options below\&. Extents bigger than value given by +\fI\-t\fR +will be skipped, otherwise this value is used as a target extent size, but is only advisory and may not be reached if the free space is too fragmented\&. Use 0 to take the kernel default, which is 256kB but may change in the future\&. You can also turn on compression in defragment operations\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +Defragmenting with Linux kernel versions < 3\&.9 or \(>= 3\&.14\-rc2 as well as with Linux stable kernel versions \(>= 3\&.10\&.31, \(>= 3\&.12\&.12 or \(>= 3\&.13\&.4 will break up the reflinks of COW data (for example files copied with +\fBcp \-\-reflink\fR, snapshots or de\-duplicated data)\&. This may cause considerable increase of space usage depending on the broken up reflinks\&. +.sp .5v +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +Directory arguments without +\fI\-r\fR +do not defragment files recursively but will defragment certain internal trees (extent tree and the subvolume tree)\&. This has been confusing and could be removed in the future\&. +.sp .5v +.RE +For +\fIstart\fR, +\fIlen\fR, +\fIsize\fR +it is possible to append units designator: \*(AqK\*(Aq, \*(AqM\*(Aq, \*(AqG\*(Aq, \*(AqT\*(Aq, \*(AqP\*(Aq, or \*(AqE\*(Aq, which represent KiB, MiB, GiB, TiB, PiB, or EiB, respectively (case does not matter)\&. +.sp +\fBOptions\fR +.PP +\-v +.RS 4 +be verbose, print file names as they\(cqre submitted for defragmentation +.RE +.PP +\-c[\fI<algo>\fR] +.RS 4 +compress file contents while defragmenting\&. Optional argument selects the compression algorithm, +\fIzlib\fR +(default), +\fIlzo\fR +or +\fIzstd\fR\&. Currently it\(cqs not possible to select no compression\&. See also section +\fIEXAMPLES\fR\&. +.RE +.PP +\-r +.RS 4 +defragment files recursively in given directories +.RE +.PP +\-f +.RS 4 +flush data for each file before going to the next file\&. +.sp +This will limit the amount of dirty data to current file, otherwise the amount accumulates from several files and will increase system load\&. This can also lead to ENOSPC if there\(cqs too much dirty data to write and it\(cqs not possible to make the reservations for the new data (ie\&. how the COW design works)\&. +.RE +.PP +\-s \fI<start>\fR[kKmMgGtTpPeE] +.RS 4 +defragmentation will start from the given offset, default is beginning of a file +.RE +.PP +\-l \fI<len>\fR[kKmMgGtTpPeE] +.RS 4 +defragment only up to +\fIlen\fR +bytes, default is the file size +.RE +.PP +\-t \fI<size>\fR[kKmMgGtTpPeE] +.RS 4 +target extent size, do not touch extents bigger than +\fIsize\fR, default: 32M +.sp +The value is only advisory and the final size of the extents may differ, depending on the state of the free space and fragmentation or other internal logic\&. Reasonable values are from tens to hundreds of megabytes\&. +.RE +.RE +.PP +\fBdu\fR [options] \fI<path>\fR [\fI<path>\fR\&.\&.] +.RS 4 +Calculate disk usage of the target files using FIEMAP\&. For individual files, it will report a count of total bytes, and exclusive (not shared) bytes\&. We also calculate a +\fIset shared\fR +value which is described below\&. +.sp +Each argument to +\fIbtrfs filesystem du\fR +will have a +\fIset shared\fR +value calculated for it\&. We define each +\fIset\fR +as those files found by a recursive search of an argument\&. The +\fIset shared\fR +value then is a sum of all shared space referenced by the set\&. +.sp +\fIset shared\fR +takes into account overlapping shared extents, hence it isn\(cqt as simple as adding up shared extents\&. +.sp +\fBOptions\fR +.PP +\-s|\-\-summarize +.RS 4 +display only a total for each argument +.RE +.PP +\-\-raw +.RS 4 +raw numbers in bytes, without the +\fIB\fR +suffix\&. +.RE +.PP +\-\-human\-readable +.RS 4 +print human friendly numbers, base 1024, this is the default +.RE +.PP +\-\-iec +.RS 4 +select the 1024 base for the following options, according to the IEC standard\&. +.RE +.PP +\-\-si +.RS 4 +select the 1000 base for the following options, according to the SI standard\&. +.RE +.PP +\-\-kbytes +.RS 4 +show sizes in KiB, or kB with \-\-si\&. +.RE +.PP +\-\-mbytes +.RS 4 +show sizes in MiB, or MB with \-\-si\&. +.RE +.PP +\-\-gbytes +.RS 4 +show sizes in GiB, or GB with \-\-si\&. +.RE +.PP +\-\-tbytes +.RS 4 +show sizes in TiB, or TB with \-\-si\&. +.RE +.RE +.PP +\fBlabel\fR [\fI<device>\fR|\fI<mountpoint>\fR] [\fI<newlabel>\fR] +.RS 4 +Show or update the label of a filesystem\&. This works on a mounted filesystem or a filesystem image\&. +.sp +The +\fInewlabel\fR +argument is optional\&. Current label is printed if the argument is omitted\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +the maximum allowable length shall be less than 256 chars and must not contain a newline\&. The trailing newline is stripped automatically\&. +.sp .5v +.RE +.RE +.PP +\fBresize\fR [\fI<devid>\fR:][+/\-]\fI<size>\fR[kKmMgGtTpPeE]|[\fI<devid>\fR:]max \fI<path>\fR +.RS 4 +Resize a mounted filesystem identified by +\fIpath\fR\&. A particular device can be resized by specifying a +\fIdevid\fR\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +If +\fIpath\fR +is a file containing a BTRFS image then resize does not work as expected and does not resize the image\&. This would resize the underlying filesystem instead\&. +.sp .5v +.RE +The +\fIdevid\fR +can be found in the output of +\fBbtrfs filesystem show\fR +and defaults to 1 if not specified\&. The +\fIsize\fR +parameter specifies the new size of the filesystem\&. If the prefix +\fI+\fR +or +\fI\-\fR +is present the size is increased or decreased by the quantity +\fIsize\fR\&. If no units are specified, bytes are assumed for +\fIsize\fR\&. Optionally, the size parameter may be suffixed by one of the following unit designators: \*(AqK\*(Aq, \*(AqM\*(Aq, \*(AqG\*(Aq, \*(AqT\*(Aq, \*(AqP\*(Aq, or \*(AqE\*(Aq, which represent KiB, MiB, GiB, TiB, PiB, or EiB, respectively (case does not matter)\&. +.sp +If +\fImax\fR +is passed, the filesystem will occupy all available space on the device respecting +\fIdevid\fR +(remember, devid 1 by default)\&. +.sp +The resize command does not manipulate the size of underlying partition\&. If you wish to enlarge/reduce a filesystem, you must make sure you can expand the partition before enlarging the filesystem and shrink the partition after reducing the size of the filesystem\&. This can done using +\fBfdisk\fR(8) or +\fBparted\fR(8) to delete the existing partition and recreate it with the new desired size\&. When recreating the partition make sure to use the same starting partition offset as before\&. +.sp +Growing is usually instant as it only updates the size\&. However, shrinking could take a long time if there are data in the device area that\(cqs beyond the new end\&. Relocation of the data takes time\&. +.sp +See also section +\fIEXAMPLES\fR\&. +.RE +.PP +\fBshow\fR [options] [\fI<path>\fR|\fI<uuid>\fR|\fI<device>\fR|\fI<label>\fR] +.RS 4 +Show the btrfs filesystem with some additional info about devices and space allocation\&. +.sp +If no option none of +\fIpath\fR/\fIuuid\fR/\fIdevice\fR/\fIlabel\fR +is passed, information about all the BTRFS filesystems is shown, both mounted and unmounted\&. +.sp +\fBOptions\fR +.PP +\-m|\-\-mounted +.RS 4 +probe kernel for mounted BTRFS filesystems +.RE +.PP +\-d|\-\-all\-devices +.RS 4 +scan all devices under /dev, otherwise the devices list is extracted from the /proc/partitions file\&. This is a fallback option if there\(cqs no device node manager (like udev) available in the system\&. +.RE +.PP +\-\-raw +.RS 4 +raw numbers in bytes, without the +\fIB\fR +suffix +.RE +.PP +\-\-human\-readable +.RS 4 +print human friendly numbers, base 1024, this is the default +.RE +.PP +\-\-iec +.RS 4 +select the 1024 base for the following options, according to the IEC standard +.RE +.PP +\-\-si +.RS 4 +select the 1000 base for the following options, according to the SI standard +.RE +.PP +\-\-kbytes +.RS 4 +show sizes in KiB, or kB with \-\-si +.RE +.PP +\-\-mbytes +.RS 4 +show sizes in MiB, or MB with \-\-si +.RE +.PP +\-\-gbytes +.RS 4 +show sizes in GiB, or GB with \-\-si +.RE +.PP +\-\-tbytes +.RS 4 +show sizes in TiB, or TB with \-\-si +.RE +.RE +.PP +\fBsync\fR \fI<path>\fR +.RS 4 +Force a sync of the filesystem at +\fIpath\fR\&. This is done via a special ioctl and will also trigger cleaning of deleted subvolumes\&. Besides that it\(cqs equivalent to the +\fBsync\fR(1) command\&. +.RE +.PP +\fBusage\fR [options] \fI<path>\fR [\fI<path>\fR\&...] +.RS 4 +Show detailed information about internal filesystem usage\&. This is supposed to replace the +\fBbtrfs filesystem df\fR +command in the long run\&. +.sp +The level of detail can differ if the command is run under a regular or the root user (due to use of restricted ioctl)\&. For both there\(cqs a summary section with information about space usage: +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ btrfs filesystem usage /path +WARNING: cannot read detailed chunk info, RAID5/6 numbers will be incorrect, run as root +Overall: + Device size: 1\&.82TiB + Device allocated: 1\&.17TiB + Device unallocated: 669\&.99GiB + Device missing: 0\&.00B + Used: 1\&.14TiB + Free (estimated): 692\&.57GiB (min: 692\&.57GiB) + Data ratio: 1\&.00 + Metadata ratio: 1\&.00 + Global reserve: 512\&.00MiB (used: 0\&.00B) +.fi +.if n \{\ +.RE +.\} +.sp +The root user will also see stats broken down by block group types: +.sp +.if n \{\ +.RS 4 +.\} +.nf +Data,single: Size:1\&.15TiB, Used:1\&.13TiB + /dev/sdb 1\&.15TiB + +Metadata,single: Size:12\&.00GiB, Used:6\&.45GiB + /dev/sdb 12\&.00GiB + +System,single: Size:32\&.00MiB, Used:144\&.00KiB + /dev/sdb 32\&.00MiB + +Unallocated: + /dev/sdb 669\&.99GiB +.fi +.if n \{\ +.RE +.\} +.sp +\fBOptions\fR +.PP +\-b|\-\-raw +.RS 4 +raw numbers in bytes, without the +\fIB\fR +suffix +.RE +.PP +\-h|\-\-human\-readable +.RS 4 +print human friendly numbers, base 1024, this is the default +.RE +.PP +\-H +.RS 4 +print human friendly numbers, base 1000 +.RE +.PP +\-\-iec +.RS 4 +select the 1024 base for the following options, according to the IEC standard +.RE +.PP +\-\-si +.RS 4 +select the 1000 base for the following options, according to the SI standard +.RE +.PP +\-k|\-\-kbytes +.RS 4 +show sizes in KiB, or kB with \-\-si +.RE +.PP +\-m|\-\-mbytes +.RS 4 +show sizes in MiB, or MB with \-\-si +.RE +.PP +\-g|\-\-gbytes +.RS 4 +show sizes in GiB, or GB with \-\-si +.RE +.PP +\-t|\-\-tbytes +.RS 4 +show sizes in TiB, or TB with \-\-si +.RE +.PP +\-T +.RS 4 +show data in tabular format +.sp +If conflicting options are passed, the last one takes precedence\&. +.RE +.RE +.SH "EXAMPLES" +.sp +\fB$ btrfs filesystem defrag \-v \-r dir/\fR +.sp +Recursively defragment files under \fIdir/\fR, print files as they are processed\&. The file names will be printed in batches, similarly the amount of data triggered by defragmentation will be proportional to last N printed files\&. The system dirty memory throttling will slow down the defragmentation but there can still be a lot of IO load and the system may stall for a moment\&. +.sp +\fB$ btrfs filesystem defrag \-v \-r \-f dir/\fR +.sp +Recursively defragment files under \fIdir/\fR, be verbose and wait until all blocks are flushed before processing next file\&. You can note slower progress of the output and lower IO load (proportional to currently defragmented file)\&. +.sp +\fB$ btrfs filesystem defrag \-v \-r \-f \-clzo dir/\fR +.sp +Recursively defragment files under \fIdir/\fR, be verbose, wait until all blocks are flushed and force file compression\&. +.sp +\fB$ btrfs filesystem defrag \-v \-r \-t 64M dir/\fR +.sp +Recursively defragment files under \fIdir/\fR, be verbose and try to merge extents to be about 64MiB\&. As stated above, the success rate depends on actual free space fragmentation and the final result is not guaranteed to meet the target even if run repeatedly\&. +.sp +\fB$ btrfs filesystem resize \-1G /path\fR +.sp +\fB$ btrfs filesystem resize 1:\-1G /path\fR +.sp +Shrink size of the filesystem\(cqs device id 1 by 1GiB\&. The first syntax expects a device with id 1 to exist, otherwise fails\&. The second is equivalent and more explicit\&. For a single\-device filesystem it\(cqs typically not necessary to specify the devid though\&. +.sp +\fB$ btrfs filesystem resize max /path\fR +.sp +\fB$ btrfs filesystem resize 1:max /path\fR +.sp +Let\(cqs assume that devid 1 exists and the filesystem does not occupy the whole block device, eg\&. it has been enlarged and we want to grow the filesystem\&. By simply using \fImax\fR as size we will achieve that\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +There are two ways to minimize the filesystem on a given device\&. The \fBbtrfs inspect\-internal min\-dev\-size\fR command, or iteratively shrink in steps\&. +.sp .5v +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs filesystem\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), diff --git a/Documentation/btrfs-find-root.8 b/Documentation/btrfs-find-root.8 new file mode 100644 index 00000000..bda5d689 --- /dev/null +++ b/Documentation/btrfs-find-root.8 @@ -0,0 +1,64 @@ +'\" t +.\" Title: btrfs-find-root +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-FIND\-ROOT" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-find-root \- filter to find btrfs root +.SH "SYNOPSIS" +.sp +\fBbtrfs\-find\-root\fR [options] \fI<device>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs\-find\-root\fR is used to find the satisfied root, you can filter by root tree\(cqs objectid, generation, level\&. +.SH "OPTIONS" +.PP +\-a +.RS 4 +Search through all metadata extents, even the root has been already found\&. +.RE +.PP +\-g \fI<generation>\fR +.RS 4 +Filter root tree by it\(cqs original transaction id, tree root\(cqs generation in default\&. +.RE +.PP +\-o \fI<objectid>\fR +.RS 4 +Filter root tree by it\(cqs objectid,tree root\(cqs objectid in default\&. +.RE +.PP +\-l \fI<level>\fR +.RS 4 +Filter root tree by B\-+ tree\(cqs level, level 0 in default\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs\-find\-root\fR will return 0 if no error happened\&. If any problems happened, 1 will be returned\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/btrfs-image.8 b/Documentation/btrfs-image.8 new file mode 100644 index 00000000..b97b846f --- /dev/null +++ b/Documentation/btrfs-image.8 @@ -0,0 +1,83 @@ +'\" t +.\" Title: btrfs-image +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-IMAGE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-image \- create/restore an image of the filesystem +.SH "SYNOPSIS" +.sp +\fBbtrfs\-image\fR [options] \fI<source>\fR \fI<target>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs\-image\fR is used to create an image of a btrfs filesystem\&. All data will be zeroed, but metadata and the like is preserved\&. Mainly used for debugging purposes\&. +.sp +In the dump mode, source is the btrfs device/file and target is the output file (use \fI\-\fR for stdout)\&. +.sp +In the restore mode (option \-r), source is the dumped image and target is the btrfs device/file\&. +.SH "OPTIONS" +.PP +\-r +.RS 4 +Restore metadump image\&. By default, this fixes super\(cqs chunk tree, by using 1 stripe pointing to primary device, so that file system can be restored by running tree log reply if possible\&. To restore without changing number of stripes in chunk tree check \-o option\&. +.RE +.PP +\-c \fI<value>\fR +.RS 4 +Compression level (0 ~ 9)\&. +.RE +.PP +\-t \fI<value>\fR +.RS 4 +Number of threads (1 ~ 32) to be used to process the image dump or restore\&. +.RE +.PP +\-o +.RS 4 +Use the old restore method, this does not fixup the chunk tree so the restored file system will not be able to be mounted\&. +.RE +.PP +\-s +.RS 4 +Sanitize the file names when generating the image\&. One \-s means just generate random garbage, which means that the directory indexes won\(cqt match up since the hashes won\(cqt match with the garbage filenames\&. Using \-ss will calculate a collision for the filename so that the hashes match, and if it can\(cqt calculate a collision then it will just generate garbage\&. The collision calculator is very time and CPU intensive so only use it if you are having problems with your file system tree and need to have it mostly working\&. +.RE +.PP +\-w +.RS 4 +Walk all the trees manually and copy any blocks that are referenced\&. Use this option if your extent tree is corrupted to make sure that all of the metadata is captured\&. +.RE +.PP +\-m +.RS 4 +Restore for multiple devices, more than 1 device should be provided\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs\-image\fR will return 0 if no error happened\&. If any problems happened, 1 will be returned\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/btrfs-inspect-internal.8 b/Documentation/btrfs-inspect-internal.8 new file mode 100644 index 00000000..3cd467ac --- /dev/null +++ b/Documentation/btrfs-inspect-internal.8 @@ -0,0 +1,355 @@ +'\" t +.\" Title: btrfs-inspect-internal +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-INSPECT\-INTE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-inspect-internal \- query various internal information +.SH "SYNOPSIS" +.sp +\fBbtrfs inspect\-internal\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +This command group provides an interface to query internal information\&. The functionality ranges from a simple UI to an ioctl or a more complex query that assembles the result from several internal structures\&. The latter usually requires calls to privileged ioctls\&. +.SH "SUBCOMMAND" +.PP +\fBdump\-super\fR [options] \fI<device>\fR [device\&...] +.RS 4 +(replaces the standalone tool +\fBbtrfs\-show\-super\fR) +.sp +Show btrfs superblock information stored on given devices in textual form\&. By default the first superblock is printed, more details about all copies or additional backup data can be printed\&. +.sp +Besides verification of the filesystem signature, there are no other sanity checks\&. The superblock checksum status is reported, the device item and filesystem UUIDs are checked and reported\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +the meaning of option +\fI\-s\fR +has changed in version 4\&.8 to be consistent with other tools to specify superblock copy rather the offset\&. The old way still works, but prints a warning\&. Please update your scripts to use +\fI\-\-bytenr\fR +instead\&. The option +\fI\-i\fR +has been deprecated\&. +.sp .5v +.RE +\fBOptions\fR +.PP +\-f|\-\-full +.RS 4 +print full superblock information, including the system chunk array and backup roots +.RE +.PP +\-a|\-\-all +.RS 4 +print information about all present superblock copies (cannot be used together with +\fI\-s\fR +option) +.RE +.PP +\-i \fI<super>\fR +.RS 4 +(deprecated since 4\&.8, same behaviour as +\fI\-\-super\fR) +.RE +.PP +\-\-bytenr \fI<bytenr>\fR +.RS 4 +specify offset to a superblock in a non\-standard location at +\fIbytenr\fR, useful for debugging (disables the +\fI\-f\fR +option) +.sp +If there are multiple options specified, only the last one applies\&. +.RE +.PP +\-F|\-\-force +.RS 4 +attempt to print the superblock even if a valid BTRFS signature is not found; the result may be completely wrong if the data does not resemble a superblock +.RE +.PP +\-s|\-\-super \fI<bytenr>\fR +.RS 4 +(see compatibility note above) +.sp +specify which mirror to print, valid values are 0, 1 and 2 and the superblock must be present on the device with a valid signature, can be used together with +\fI\-\-force\fR +.RE +.RE +.PP +\fBdump\-tree\fR [options] \fI<device>\fR +.RS 4 +(replaces the standalone tool +\fBbtrfs\-debug\-tree\fR) +.sp +Dump tree structures from a given device in textual form, expand keys to human readable equivalents where possible\&. This is useful for analyzing filesystem state or inconsistencies and has a positive educational effect on understanding the internal filesystem structure\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +contains file names, consider that if you\(cqre asked to send the dump for analysis\&. Does not contain file data\&. +.sp .5v +.RE +\fBOptions\fR +.PP +\-e|\-\-extents +.RS 4 +print only extent\-related information: extent and device trees +.RE +.PP +\-d|\-\-device +.RS 4 +print only device\-related information: tree root, chunk and device trees +.RE +.PP +\-r|\-\-roots +.RS 4 +print only short root node information, ie\&. the root tree keys +.RE +.PP +\-R|\-\-backups +.RS 4 +same as \-\-roots plus print backup root info, ie\&. the backup root keys and the respective tree root block offset +.RE +.PP +\-u|\-\-uuid +.RS 4 +print only the uuid tree information, empty output if the tree does not exist +.RE +.PP +\-b \fI<block_num>\fR +.RS 4 +print info of the specified block only +.RE +.PP +\-\-follow +.RS 4 +use with +\fI\-b\fR, print all children tree blocks of +\fI\fI<block_num>\fR\fR +.RE +.PP +\-\-dfs +.RS 4 +use depth\-first search to print trees\&. (default) the nodes and leaves are intermixed in the output +.RE +.PP +\-\-bfs +.RS 4 +use breadth\-first search to print trees\&. the nodes are printed before all leaves +.RE +.PP +\-t \fI<tree_id>\fR +.RS 4 +print only the tree with the specified ID, where the ID can be numerical or common name in a flexible human readable form +.sp +The tree id name recognition rules: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +case does not matter +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +the C source definition, eg\&. BTRFS_ROOT_TREE_OBJECTID +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +short forms without BTRFS_ prefix, without _TREE and _OBJECTID suffix, eg\&. ROOT_TREE, ROOT +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +convenience aliases, eg\&. DEVICE for the DEV tree, CHECKSUM for CSUM +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +unrecognized ID is an error +.RE +.RE +.RE +.PP +\fBinode\-resolve\fR [\-v] \fI<ino>\fR \fI<path>\fR +.RS 4 +(needs root privileges) +.sp +resolve paths to all files with given inode number +\fIino\fR +in a given subvolume at +\fIpath\fR, ie\&. all hardlinks +.sp +\fBOptions\fR +.PP +\-v +.RS 4 +verbose mode, print count of returned paths and ioctl() return value +.RE +.RE +.PP +\fBlogical\-resolve\fR [\-Pv] [\-s \fI<bufsize>\fR] \fI<logical>\fR \fI<path>\fR +.RS 4 +(needs root privileges) +.sp +resolve paths to all files at given +\fIlogical\fR +address in the linear filesystem space +.sp +\fBOptions\fR +.PP +\-P +.RS 4 +skip the path resolving and print the inodes instead +.RE +.PP +\-v +.RS 4 +verbose mode, print count of returned paths and all ioctl() return values +.RE +.PP +\-s \fI<bufsize>\fR +.RS 4 +set internal buffer for storing the file names to +\fIbufsize\fR, default is 4096, maximum 64k +.RE +.RE +.PP +\fBmin\-dev\-size\fR [options] \fI<path>\fR +.RS 4 +(needs root privileges) +.sp +return the minimum size the device can be shrunk to, without performing any resize operation, this may be useful before executing the actual resize operation +.sp +\fBOptions\fR +.PP +\-\-id \fI<id>\fR +.RS 4 +specify the device +\fIid\fR +to query, default is 1 if this option is not used +.RE +.RE +.PP +\fBrootid\fR \fI<path>\fR +.RS 4 +for a given file or directory, return the containing tree root id, but for a subvolume itself return its own tree id (ie\&. subvol id) +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +The result is undefined for the so\-called empty subvolumes (identified by inode number 2), but such a subvolume does not contain any files anyway +.sp .5v +.RE +.RE +.PP +\fBsubvolid\-resolve\fR \fI<subvolid>\fR \fI<path>\fR +.RS 4 +(needs root privileges) +.sp +resolve the absolute path of the subvolume id +\fIsubvolid\fR +.RE +.PP +\fBtree\-stats\fR [options] \fI<device>\fR +.RS 4 +(needs root privileges) +.sp +Print sizes and statistics of trees\&. +.sp +\fBOptions\fR +.PP +\-b +.RS 4 +Print raw numbers in bytes\&. +.RE +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs inspect\-internal\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/btrfs-map-logical.8 b/Documentation/btrfs-map-logical.8 new file mode 100644 index 00000000..75f7fd3a --- /dev/null +++ b/Documentation/btrfs-map-logical.8 @@ -0,0 +1,66 @@ +'\" t +.\" Title: btrfs-map-logical +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-MAP\-LOGICAL" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-map-logical \- map btrfs logical extent to physical extent +.SH "SYNOPSIS" +.sp +\fBbtrfs\-map\-logical\fR \fI<options>\fR \fI<device>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs\-map\-logical\fR can be used to find out what the physical offsets are on the mirrors, the result is dumped to stdout by default\&. +.sp +Mainly used for debug purpose\&. +.SH "OPTIONS" +.PP +\-l|\-\-logical \fI<logical_num>\fR +.RS 4 +Logical extent to map\&. +.RE +.PP +\-c|\-\-copy \fI<copy>\fR +.RS 4 +Copy of the extent to read(usually 1 or 2)\&. +.RE +.PP +\-o|\-\-output \fI<filename>\fR +.RS 4 +Output file to hold the extent\&. +.RE +.PP +\-b|\-\-bytes \fI<bytes>\fR +.RS 4 +Number of bytes to read\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs\-map\-logical\fR will return 0 if no error happened\&. If any problems happened, 1 will be returned\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/btrfs-property.8 b/Documentation/btrfs-property.8 new file mode 100644 index 00000000..b8df629e --- /dev/null +++ b/Documentation/btrfs-property.8 @@ -0,0 +1,117 @@ +'\" t +.\" Title: btrfs-property +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-PROPERTY" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-property \- get/set/list properties for given filesystem object +.SH "SYNOPSIS" +.sp +\fBbtrfs property\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs property\fR is used to get/set/list property for given filesystem object\&. The object can be an inode (file or directory), subvolume or the whole filesystem\&. See the description of \fBget\fR subcommand for more information about both btrfs object and property\&. +.sp +\fBbtrfs property\fR provides an unified and user\-friendly method to tune different btrfs properties instead of using the traditional method like \fBchattr\fR(1) or \fBlsattr\fR(1)\&. +.SH "SUBCOMMAND" +.PP +\fBget\fR [\-t \fI<type>\fR] \fI<object>\fR [\fI<name>\fR] +.RS 4 +get property from a btrfs +\fI<object>\fR +of given +\fI<type>\fR +.sp +A btrfs object, which is set by +\fI<object>\fR, can be a btrfs filesystem itself, a btrfs subvolume, an inode (file or directory) inside btrfs, or a device on which a btrfs exists\&. +.sp +The option +\fI\-t\fR +can be used to explicitly specify what type of object you meant\&. This is only needed when a property could be set for more then one object type\&. +.sp +Possible types are +\fIs[ubvol]\fR, +\fIf[ilesystem]\fR, +\fIi[node]\fR +and +\fId[evice]\fR, where the first lettes is a shortcut\&. +.sp +Set the name of property by +\fIname\fR\&. If no +\fIname\fR +is specified, all properties for the given object are printed\&. +\fIname\fR +is one of the following: +.PP +ro +.RS 4 +read\-only flag of subvolume: true or false +.RE +.PP +label +.RS 4 +label of device +.RE +.PP +compression +.RS 4 +compression algorithm set for an inode, possible values: +\fIlzo\fR, +\fIzlib\fR, +\fIzstd\fR\&. To disable compression use "" (empty string), +\fIno\fR +or +\fInone\fR\&. +.RE +.RE +.PP +\fBlist\fR [\-t \fI<type>\fR] \fI<object>\fR +.RS 4 +Lists available properties with their descriptions for the given object\&. +.sp +See the description of +\fBget\fR +subcommand for the meaning of each option\&. +.RE +.PP +\fBset\fR [\-t \fI<type>\fR] \fI<object>\fR \fI<name>\fR \fI<value>\fR +.RS 4 +Sets a property on a btrfs object\&. +.sp +See the description of +\fBget\fR +subcommand for the meaning of each option\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs property\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBlsattr\fR(1), \fBchattr\fR(1) diff --git a/Documentation/btrfs-qgroup.8 b/Documentation/btrfs-qgroup.8 new file mode 100644 index 00000000..ed01649e --- /dev/null +++ b/Documentation/btrfs-qgroup.8 @@ -0,0 +1,295 @@ +'\" t +.\" Title: btrfs-qgroup +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-QGROUP" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-qgroup \- control the quota group of a btrfs filesystem +.SH "SYNOPSIS" +.sp +\fBbtrfs qgroup\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs qgroup\fR is used to control quota group (qgroup) of a btrfs filesystem\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +To use qgroup you need to enable quota first using \fBbtrfs quota enable\fR command\&. +.sp .5v +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +Qgroup is not stable yet and will impact performance in current mainline kernel (v4\&.14)\&. +.sp .5v +.RE +.SH "QGROUP" +.sp +Quota groups or qgroup in btrfs make a tree hierarchy, the leaf qgroups are attached to subvolumes\&. The size limits are set per qgroup and apply when any limit is reached in tree that contains a given subvolume\&. +.sp +The limits are separated between shared and exclusive and reflect the extent ownership\&. For example a fresh snapshot shares almost all the blocks with the original subvolume, new writes to either subvolume will raise towards the exclusive limit\&. +.sp +The qgroup identifiers conform to \fIlevel/id\fR where level 0 is reserved to the qgroups associated with subvolumes\&. Such qgroups are created automatically\&. +.sp +The qgroup hierarchy is built by commands \fBcreate\fR and \fBassign\fR\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +If the qgroup of a subvolume is destroyed, quota about the subvolume will not be functional until qgroup \fI0/\fR\fI\fI<subvolume id>\fR\fR is created again\&. +.sp .5v +.RE +.SH "SUBCOMMAND" +.PP +\fBassign\fR [options] \fI<src>\fR \fI<dst>\fR \fI<path>\fR +.RS 4 +Assign qgroup +\fI<src>\fR +as the child qgroup of +\fI<dst>\fR +in the btrfs filesystem identified by +\fI<path>\fR\&. +.sp +\fBOptions\fR +.PP +\-\-rescan +.RS 4 +(default since: 4\&.19) Automatically schedule quota rescan if the new qgroup assignment would lead to quota inconsistency\&. See +\fIQUOTA RESCAN\fR +for more information\&. +.RE +.PP +\-\-no\-rescan +.RS 4 +Explicitly ask not to do a rescan, even if the assignment will make the quotas inconsistent\&. This may be useful for repeated calls where the rescan would add unnecessary overhead\&. +.RE +.RE +.PP +\fBcreate\fR \fI<qgroupid>\fR \fI<path>\fR +.RS 4 +Create a subvolume quota group\&. +.sp +For the +\fI0/\fR\fI\fI<subvolume id>\fR\fR +qgroup, a qgroup can be created even before the subvolume is created\&. +.RE +.PP +\fBdestroy\fR \fI<qgroupid>\fR \fI<path>\fR +.RS 4 +Destroy a qgroup\&. +.sp +If a qgroup is not isolated, meaning it is a parent or child qgroup, then it can only be destroyed after the relationship is removed\&. +.RE +.PP +\fBlimit\fR [options] \fI<size>\fR|none [\fI<qgroupid>\fR] \fI<path>\fR +.RS 4 +Limit the size of a qgroup to +\fI<size>\fR +or no limit in the btrfs filesystem identified by +\fI<path>\fR\&. +.sp +If +\fI<qgroupid>\fR +is not given, qgroup of the subvolume identified by +\fI<path>\fR +is used if possible\&. +.sp +\fBOptions\fR +.PP +\-c +.RS 4 +limit amount of data after compression\&. This is the default, it is currently not possible to turn off this option\&. +.RE +.PP +\-e +.RS 4 +limit space exclusively assigned to this qgroup\&. +.RE +.RE +.PP +\fBremove\fR \fI<src>\fR \fI<dst>\fR \fI<path>\fR +.RS 4 +Remove the relationship between child qgroup +\fI<src>\fR +and parent qgroup +\fI<dst>\fR +in the btrfs filesystem identified by +\fI<path>\fR\&. +.sp +\fBOptions\fR +.sp +The same as +\fBassign\fR +subcommand\&. +.RE +.PP +\fBshow\fR [options] \fI<path>\fR +.RS 4 +Show all qgroups in the btrfs filesystem identified by +\fI<path>\fR\&. +.sp +\fBOptions\fR +.PP +\-p +.RS 4 +print parent qgroup id\&. +.RE +.PP +\-c +.RS 4 +print child qgroup id\&. +.RE +.PP +\-r +.RS 4 +print limit of referenced size of qgroup\&. +.RE +.PP +\-e +.RS 4 +print limit of exclusive size of qgroup\&. +.RE +.PP +\-F +.RS 4 +list all qgroups which impact the given path(include ancestral qgroups) +.RE +.PP +\-f +.RS 4 +list all qgroups which impact the given path(exclude ancestral qgroups) +.RE +.PP +\-\-raw +.RS 4 +raw numbers in bytes, without the +\fIB\fR +suffix\&. +.RE +.PP +\-\-human\-readable +.RS 4 +print human friendly numbers, base 1024, this is the default +.RE +.PP +\-\-iec +.RS 4 +select the 1024 base for the following options, according to the IEC standard\&. +.RE +.PP +\-\-si +.RS 4 +select the 1000 base for the following options, according to the SI standard\&. +.RE +.PP +\-\-kbytes +.RS 4 +show sizes in KiB, or kB with \-\-si\&. +.RE +.PP +\-\-mbytes +.RS 4 +show sizes in MiB, or MB with \-\-si\&. +.RE +.PP +\-\-gbytes +.RS 4 +show sizes in GiB, or GB with \-\-si\&. +.RE +.PP +\-\-tbytes +.RS 4 +show sizes in TiB, or TB with \-\-si\&. +.RE +.PP +\-\-sort=[+/\-]\fI<attr>\fR[,[+/\-]\fI<attr>\fR]\&... +.RS 4 +list qgroups in order of +\fI<attr>\fR\&. +.sp +\fI<attr>\fR +can be one or more of qgroupid,rfer,excl,max_rfer,max_excl\&. +.sp +Prefix \*(Aq+\*(Aq means ascending order and \*(Aq\-\*(Aq means descending order of +\fI<attr>\fR\&. If no prefix is given, use ascending order by default\&. +.sp +If multiple +\fI<attr>\fRs is given, use comma to separate\&. +.RE +.PP +\-\-sync +.RS 4 +To retrieve information after updating the state of qgroups, force sync of the filesystem identified by +\fI<path>\fR +before getting information\&. +.RE +.RE +.SH "QUOTA RESCAN" +.sp +The rescan reads all extent sharing metadata and updates the respective qgoups accordingly\&. +.sp +The information consists of bytes owned exclusively (\fIexcl\fR) or shared/referred to (\fIrfer\fR)\&. There\(cqs no explicit information about which extents are shared or owned exclusively\&. This means when qgroup relationship changes, extent owners change and qgroup numbers are no longer consistent unless we do a full rescan\&. +.sp +However there are cases where we can avoid a full rescan, if a subvolume whose \fIrfer\fR number equals its \fIexcl\fR number, which means all bytes are exclusively owned, then assigning/removing this subvolume only needs to add/subtract \fIrfer\fR number from its parent qgroup\&. This can speed up the rescan\&. +.SH "EXIT STATUS" +.sp +\fBbtrfs qgroup\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-subvolume\fR(8), \fBbtrfs\-quota\fR(8), diff --git a/Documentation/btrfs-quota.8 b/Documentation/btrfs-quota.8 new file mode 100644 index 00000000..bc2dc239 --- /dev/null +++ b/Documentation/btrfs-quota.8 @@ -0,0 +1,216 @@ +'\" t +.\" Title: btrfs-quota +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-QUOTA" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-quota \- control the global quota status of a btrfs filesystem +.SH "SYNOPSIS" +.sp +\fBbtrfs quota\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +The commands under \fBbtrfs quota\fR are used to affect the global status of quotas of a btrfs filesystem\&. The quota groups (qgroups) are managed by the subcommand \fBbtrfs qgroup\fR(8)\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +Qgroups are different than the traditional user quotas and designed to track shared and exclusive data per\-subvolume\&. Please refer to the section \fIHIERARCHICAL QUOTA GROUP CONCEPTS\fR for a detailed description\&. +.sp .5v +.RE +.SS "PERFORMANCE IMPLICATIONS" +.sp +When quotas are activated, they affect all extent processing, which takes a performance hit\&. Activation of qgroups is not recommended unless the user intends to actually use them\&. +.SS "STABILITY STATUS" +.sp +The qgroup implementation has turned out to be quite difficult as it affects the core of the filesystem operation\&. Qgroup users have hit various corner cases over time, such as incorrect accounting or system instability\&. The situation is gradually improving and issues found and fixed\&. +.SH "HIERARCHICAL QUOTA GROUP CONCEPTS" +.sp +The concept of quota has a long\-standing tradition in the Unix world\&. Ever since computers allow multiple users to work simultaneously in one filesystem, there is the need to prevent one user from using up the entire space\&. Every user should get his fair share of the available resources\&. +.sp +In case of files, the solution is quite straightforward\&. Each file has an \fIowner\fR recorded along with it, and it has a size\&. Traditional quota just restricts the total size of all files that are owned by a user\&. The concept is quite flexible: if a user hits his quota limit, the administrator can raise it on the fly\&. +.sp +On the other hand, the traditional approach has only a poor solution to restrict directories\&. At installation time, the harddisk can be partitioned so that every directory (eg\&. /usr, /var/, \&...) that needs a limit gets its own partition\&. The obvious problem is that those limits cannot be changed without a reinstallation\&. The btrfs subvolume feature builds a bridge\&. Subvolumes correspond in many ways to partitions, as every subvolume looks like its own filesystem\&. With subvolume quota, it is now possible to restrict each subvolume like a partition, but keep the flexibility of quota\&. The space for each subvolume can be expanded or restricted on the fly\&. +.sp +As subvolumes are the basis for snapshots, interesting questions arise as to how to account used space in the presence of snapshots\&. If you have a file shared between a subvolume and a snapshot, whom to account the file to? The creator? Both? What if the file gets modified in the snapshot, should only these changes be accounted to it? But wait, both the snapshot and the subvolume belong to the same user home\&. I just want to limit the total space used by both! But somebody else might not want to charge the snapshots to the users\&. +.sp +Btrfs subvolume quota solves these problems by introducing groups of subvolumes and let the user put limits on them\&. It is even possible to have groups of groups\&. In the following, we refer to them as \fIqgroups\fR\&. +.sp +Each qgroup primarily tracks two numbers, the amount of total referenced space and the amount of exclusively referenced space\&. +.PP +referenced +.RS 4 +space is the amount of data that can be reached from any of the subvolumes contained in the qgroup, while +.RE +.PP +exclusive +.RS 4 +is the amount of data where all references to this data can be reached from within this qgroup\&. +.RE +.SS "SUBVOLUME QUOTA GROUPS" +.sp +The basic notion of the Subvolume Quota feature is the quota group, short qgroup\&. Qgroups are notated as \fIlevel/id\fR, eg\&. the qgroup 3/2 is a qgroup of level 3\&. For level 0, the leading \fI0/\fR can be omitted\&. Qgroups of level 0 get created automatically when a subvolume/snapshot gets created\&. The ID of the qgroup corresponds to the ID of the subvolume, so 0/5 is the qgroup for the root subvolume\&. For the \fBbtrfs qgroup\fR command, the path to the subvolume can also be used instead of \fI0/ID\fR\&. For all higher levels, the ID can be chosen freely\&. +.sp +Each qgroup can contain a set of lower level qgroups, thus creating a hierarchy of qgroups\&. Figure 1 shows an example qgroup tree\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf + +\-\-\-+ + |2/1| + +\-\-\-+ + / \e + +\-\-\-+/ \e+\-\-\-+ + |1/1| |1/2| + +\-\-\-+ +\-\-\-+ + / \e / \e + +\-\-\-+/ \e+\-\-\-+/ \e+\-\-\-+ +qgroups |0/1| |0/2| |0/3| + +\-+\-+ +\-\-\-+ +\-\-\-+ + | / \e / \e + | / \e / \e + | / \e / \e +extents 1 2 3 4 +.fi +.if n \{\ +.RE +.\} +.sp +Figure1: Sample qgroup hierarchy +.sp +At the bottom, some extents are depicted showing which qgroups reference which extents\&. It is important to understand the notion of \fIreferenced\fR vs \fIexclusive\fR\&. In the example, qgroup 0/2 references extents 2 and 3, while 1/2 references extents 2\-4, 2/1 references all extents\&. +.sp +On the other hand, extent 1 is exclusive to 0/1, extent 2 is exclusive to 0/2, while extent 3 is neither exclusive to 0/2 nor to 0/3\&. But because both references can be reached from 1/2, extent 3 is exclusive to 1/2\&. All extents are exclusive to 2/1\&. +.sp +So exclusive does not mean there is no other way to reach the extent, but it does mean that if you delete all subvolumes contained in a qgroup, the extent will get deleted\&. +.sp +Exclusive of a qgroup conveys the useful information how much space will be freed in case all subvolumes of the qgroup get deleted\&. +.sp +All data extents are accounted this way\&. Metadata that belongs to a specific subvolume (i\&.e\&. its filesystem tree) is also accounted\&. Checksums and extent allocation information are not accounted\&. +.sp +In turn, the referenced count of a qgroup can be limited\&. All writes beyond this limit will lead to a \fIQuota Exceeded\fR error\&. +.SS "INHERITANCE" +.sp +Things get a bit more complicated when new subvolumes or snapshots are created\&. The case of (empty) subvolumes is still quite easy\&. If a subvolume should be part of a qgroup, it has to be added to the qgroup at creation time\&. To add it at a later time, it would be necessary to at least rescan the full subvolume for a proper accounting\&. +.sp +Creation of a snapshot is the hard case\&. Obviously, the snapshot will reference the exact amount of space as its source, and both source and destination now have an exclusive count of 0 (the filesystem nodesize to be precise, as the roots of the trees are not shared)\&. But what about qgroups of higher levels? If the qgroup contains both the source and the destination, nothing changes\&. If the qgroup contains only the source, it might lose some exclusive\&. +.sp +But how much? The tempting answer is, subtract all exclusive of the source from the qgroup, but that is wrong, or at least not enough\&. There could have been an extent that is referenced from the source and another subvolume from that qgroup\&. This extent would have been exclusive to the qgroup, but not to the source subvolume\&. With the creation of the snapshot, the qgroup would also lose this extent from its exclusive set\&. +.sp +So how can this problem be solved? In the instant the snapshot gets created, we already have to know the correct exclusive count\&. We need to have a second qgroup that contains all the subvolumes as the first qgroup, except the subvolume we want to snapshot\&. The moment we create the snapshot, the exclusive count from the second qgroup needs to be copied to the first qgroup, as it represents the correct value\&. The second qgroup is called a tracking qgroup\&. It is only there in case a snapshot is needed\&. +.SS "USE CASES" +.sp +Below are some usecases that do not mean to be extensive\&. You can find your own way how to integrate qgroups\&. +.sp +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBSINGLE-USER MACHINE\fR +.RS 4 +.sp +\fBReplacement for partitions\fR +.sp +The simplest use case is to use qgroups as simple replacement for partitions\&. Btrfs takes the disk as a whole, and /, /usr, /var, etc\&. are created as subvolumes\&. As each subvolume gets it own qgroup automatically, they can simply be restricted\&. No hierarchy is needed for that\&. +.sp +\fBTrack usage of snapshots\fR +.sp +When a snapshot is taken, a qgroup for it will automatically be created with the correct values\&. \fIReferenced\fR will show how much is in it, possibly shared with other subvolumes\&. \fIExclusive\fR will be the amount of space that gets freed when the subvolume is deleted\&. +.RE +.sp +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBMULTI-USER MACHINE\fR +.RS 4 +.sp +\fBRestricting homes\fR +.sp +When you have several users on a machine, with home directories probably under /home, you might want to restrict /home as a whole, while restricting every user to an individual limit as well\&. This is easily accomplished by creating a qgroup for /home , eg\&. 1/1, and assigning all user subvolumes to it\&. Restricting this qgroup will limit /home, while every user subvolume can get its own (lower) limit\&. +.sp +\fBAccounting snapshots to the user\fR +.sp +Let\(cqs say the user is allowed to create snapshots via some mechanism\&. It would only be fair to account space used by the snapshots to the user\&. This does not mean the user doubles his usage as soon as he takes a snapshot\&. Of course, files that are present in his home and the snapshot should only be accounted once\&. This can be accomplished by creating a qgroup for each user, say \fI1/UID\fR\&. The user home and all snapshots are assigned to this qgroup\&. Limiting it will extend the limit to all snapshots, counting files only once\&. To limit /home as a whole, a higher level group 2/1 replacing 1/1 from the previous example is needed, with all user qgroups assigned to it\&. +.sp +\fBDo not account snapshots\fR +.sp +On the other hand, when the snapshots get created automatically, the user has no chance to control them, so the space used by them should not be accounted to him\&. This is already the case when creating snapshots in the example from the previous section\&. +.sp +\fBSnapshots for backup purposes\fR +.sp +This scenario is a mixture of the previous two\&. The user can create snapshots, but some snapshots for backup purposes are being created by the system\&. The user\(cqs snapshots should be accounted to the user, not the system\&. The solution is similar to the one from section \fIAccounting snapshots to the user\fR, but do not assign system snapshots to user\(cqs qgroup\&. +.RE +.SH "SUBCOMMAND" +.PP +\fBdisable\fR \fI<path>\fR +.RS 4 +Disable subvolume quota support for a filesystem\&. +.RE +.PP +\fBenable\fR \fI<path>\fR +.RS 4 +Enable subvolume quota support for a filesystem\&. +.RE +.PP +\fBrescan\fR [\-s] \fI<path>\fR +.RS 4 +Trash all qgroup numbers and scan the metadata again with the current config\&. +.sp +\fBOptions\fR +.PP +\-s +.RS 4 +show status of a running rescan operation\&. +.RE +.PP +\-w +.RS 4 +wait for rescan operation to finish(can be already in progress)\&. +.RE +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs quota\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-subvolume\fR(8), \fBbtrfs\-qgroup\fR(8) diff --git a/Documentation/btrfs-receive.8 b/Documentation/btrfs-receive.8 new file mode 100644 index 00000000..acc0dd52 --- /dev/null +++ b/Documentation/btrfs-receive.8 @@ -0,0 +1,153 @@ +'\" t +.\" Title: btrfs-receive +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-RECEIVE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-receive \- receive subvolumes from send stream +.SH "SYNOPSIS" +.sp +\fBbtrfs receive\fR [options] \fI<path>\fR +.sp +or +.sp +\fBbtrfs receive\fR \-\-dump [options] +.SH "DESCRIPTION" +.sp +Receive a stream of changes and replicate one or more subvolumes that were previously generated by \fBbtrfs send\fR\&. The received subvolumes are stored to \fIpath\fR, unless \fI\-\-dump\fR option is given\&. +.sp +If \fI\-\-dump\fR option is specified, \fBbtrfs receive\fR will only do the validation of the stream, and print the stream metadata, one operation per line\&. +.sp +\fBbtrfs receive\fR will fail in the following cases: +.sp +.RS 4 +.ie n \{\ +\h'-04' 1.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 1." 4.2 +.\} +receiving subvolume already exists +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04' 2.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 2." 4.2 +.\} +previously received subvolume has been changed after it was received +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04' 3.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 3." 4.2 +.\} +default subvolume has changed or you didn\(cqt mount the filesystem at the toplevel subvolume +.RE +.sp +A subvolume is made read\-only after the receiving process finishes successfully (see BUGS below)\&. +.sp +\fBOptions\fR +.PP +\-v +.RS 4 +increase verbosity about performed actions, print details about each operation +.RE +.PP +\-f \fI<FILE>\fR +.RS 4 +read the stream from +\fI<FILE>\fR +instead of stdin, +.RE +.PP +\-C|\-\-chroot +.RS 4 +confine the process to +\fIpath\fR +using +\fBchroot\fR(1) +.RE +.PP +\-e +.RS 4 +terminate after receiving an +\fIend cmd\fR +marker in the stream\&. +.sp +Without this option the receiver side terminates only in case of an error on end of file\&. +.RE +.PP +\-E|\-\-max\-errors \fI<NERR>\fR +.RS 4 +terminate as soon as NERR errors occur while stream processing commands from the stream +.sp +Default value is 1\&. A value of 0 means no limit\&. +.RE +.PP +\-m \fI<ROOTMOUNT>\fR +.RS 4 +the root mount point of the destination filesystem +.sp +By default the mountpoint is searched in +\fI/proc/self/mounts\fR\&. If +\fI/proc\fR +is not accessible, eg\&. in a chroot environment, use this option to tell us where this filesystem is mounted\&. +.RE +.PP +\-\-dump +.RS 4 +dump the stream metadata, one line per operation +.sp +Does not require the +\fIpath\fR +parameter\&. The filesystem remains unchanged\&. +.RE +.SH "BUGS" +.sp +\fBbtrfs receive\fR sets the subvolume read\-only after it completes successfully\&. However, while the receive is in progress, users who have write access to files or directories in the receiving \fIpath\fR can add, remove, or modify files, in which case the resulting read\-only subvolume will not be an exact copy of the sent subvolume\&. +.sp +If the intention is to create an exact copy, the receiving \fIpath\fR should be protected from access by users until the receive operation has completed and the subvolume is set to read\-only\&. +.sp +Additionally, receive does not currently do a very good job of validating that an incremental send stream actually makes sense, and it is thus possible for a specially crafted send stream to create a subvolume with reflinks to arbitrary files in the same filesystem\&. Because of this, users are advised to not use \fBbtrfs receive\fR on send streams from untrusted sources, and to protect trusted streams when sending them across untrusted networks\&. +.SH "EXIT STATUS" +.sp +\fBbtrfs receive\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-send\fR(8) diff --git a/Documentation/btrfs-replace.8 b/Documentation/btrfs-replace.8 new file mode 100644 index 00000000..95baf9c6 --- /dev/null +++ b/Documentation/btrfs-replace.8 @@ -0,0 +1,116 @@ +'\" t +.\" Title: btrfs-replace +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-REPLACE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-replace \- replace devices managed by btrfs with other device\&. +.SH "SYNOPSIS" +.sp +\fBbtrfs replace\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs replace\fR is used to replace btrfs managed devices with other device\&. +.SH "SUBCOMMAND" +.PP +\fBcancel\fR \fI<mount_point>\fR +.RS 4 +Cancel a running device replace operation\&. +.RE +.PP +\fBstart\fR [\-Bfr] \fI<srcdev>\fR|\fI<devid>\fR \fI<targetdev>\fR \fI<path>\fR +.RS 4 +Replace device of a btrfs filesystem\&. +.sp +On a live filesystem, duplicate the data to the target device which is currently stored on the source device\&. If the source device is not available anymore, or if the \-r option is set, the data is built only using the RAID redundancy mechanisms\&. After completion of the operation, the source device is removed from the filesystem\&. If the +\fI<srcdev>\fR +is a numerical value, it is assumed to be the device id of the filesystem which is mounted at +\fI<path>\fR, otherwise it is the path to the source device\&. If the source device is disconnected, from the system, you have to use the devid parameter format\&. The +\fI<targetdev>\fR +needs to be same size or larger than the +\fI<srcdev>\fR\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +the filesystem has to be resized to fully take advantage of a larger target device; this can be achieved with +\fBbtrfs filesystem resize <devid>:max /path\fR +.sp .5v +.RE +\fBOptions\fR +.PP +\-r +.RS 4 +only read from +\fI<srcdev>\fR +if no other zero\-defect mirror exists\&. (enable this if your drive has lots of read errors, the access would be very slow) +.RE +.PP +\-f +.RS 4 +force using and overwriting +\fI<targetdev>\fR +even if it looks like it contains a valid btrfs filesystem\&. +.sp +A valid filesystem is assumed if a btrfs superblock is found which contains a correct checksum\&. Devices that are currently mounted are never allowed to be used as the +\fI<targetdev>\fR\&. +.RE +.PP +\-B +.RS 4 +no background replace\&. +.RE +.RE +.PP +\fBstatus\fR [\-1] \fI<mount_point>\fR +.RS 4 +Print status and progress information of a running device replace operation\&. +.sp +\fBOptions\fR +.PP +\-1 +.RS 4 +print once instead of print continuously until the replace operation finishes (or is cancelled) +.RE +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs replace\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-device\fR(8), diff --git a/Documentation/btrfs-rescue.8 b/Documentation/btrfs-rescue.8 new file mode 100644 index 00000000..ccf542a7 --- /dev/null +++ b/Documentation/btrfs-rescue.8 @@ -0,0 +1,188 @@ +'\" t +.\" Title: btrfs-rescue +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-RESCUE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-rescue \- Recover a damaged btrfs filesystem +.SH "SYNOPSIS" +.sp +\fBbtrfs rescue\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs rescue\fR is used to try to recover a damaged btrfs filesystem\&. +.SH "SUBCOMMAND" +.PP +\fBchunk\-recover\fR [options] \fI<device>\fR +.RS 4 +Recover the chunk tree by scanning the devices +.sp +\fBOptions\fR +.PP +\-y +.RS 4 +assume an answer of +\fIyes\fR +to all questions\&. +.RE +.PP +\-v +.RS 4 +verbose mode\&. +.RE +.PP +\-h +.RS 4 +help\&. +.RE +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +Since \fBchunk\-recover\fR will scan the whole device, it will be \fBVERY\fR slow especially executed on a large device\&. +.sp .5v +.RE +.PP +\fBfix\-device\-size\fR \fI<device>\fR +.RS 4 +fix device size and super block total bytes values that are do not match +.sp +Kernel 4\&.11 starts to check the device size more strictly and this might mismatch the stored value of total bytes\&. See the exact error message below\&. Newer kernel will refuse to mount the filesystem where the values do not match\&. This error is not fatal and can be fixed\&. This command will fix the device size values if possible\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +BTRFS error (device sdb): super_total_bytes 92017859088384 mismatch with fs_devices total_rw_bytes 92017859094528 +.fi +.if n \{\ +.RE +.\} +.sp +The mismatch may also exhibit as a kernel warning: +.sp +.if n \{\ +.RS 4 +.\} +.nf +WARNING: CPU: 3 PID: 439 at fs/btrfs/ctree\&.h:1559 btrfs_update_device+0x1c5/0x1d0 [btrfs] +.fi +.if n \{\ +.RE +.\} +.RE +.PP +\fBsuper\-recover\fR [options] \fI<device>\fR +.RS 4 +Recover bad superblocks from good copies\&. +.sp +\fBOptions\fR +.PP +\-y +.RS 4 +assume an answer of +\fIyes\fR +to all questions\&. +.RE +.PP +\-v +.RS 4 +verbose mode\&. +.RE +.RE +.PP +\fBzero\-log\fR \fI<device>\fR +.RS 4 +clear the filesystem log tree +.sp +This command will clear the filesystem log tree\&. This may fix a specific set of problem when the filesystem mount fails due to the log replay\&. See below for sample stacktraces that may show up in system log\&. +.sp +The common case where this happens was fixed a long time ago, so it is unlikely that you will see this particular problem, but the command is kept around\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +clearing the log may lead to loss of changes that were made since the last transaction commit\&. This may be up to 30 seconds (default commit period) or less if the commit was implied by other filesystem activity\&. +.sp .5v +.RE +One can determine whether +\fBzero\-log\fR +is needed according to the kernel backtrace: +.sp +.if n \{\ +.RS 4 +.\} +.nf +? replay_one_dir_item+0xb5/0xb5 [btrfs] +? walk_log_tree+0x9c/0x19d [btrfs] +? btrfs_read_fs_root_no_radix+0x169/0x1a1 [btrfs] +? btrfs_recover_log_trees+0x195/0x29c [btrfs] +? replay_one_dir_item+0xb5/0xb5 [btrfs] +? btree_read_extent_buffer_pages+0x76/0xbc [btrfs] +? open_ctree+0xff6/0x132c [btrfs] +.fi +.if n \{\ +.RE +.\} +.sp +If the errors are like above, then +\fBzero\-log\fR +should be used to clear the log and the filesystem may be mounted normally again\&. The keywords to look for are +\fIopen_ctree\fR +which says that it\(cqs during mount and function names that contain +\fIreplay\fR, +\fIrecover\fR +or +\fIlog_tree\fR\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs rescue\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-scrub\fR(8), \fBbtrfs\-check\fR(8) diff --git a/Documentation/btrfs-restore.8 b/Documentation/btrfs-restore.8 new file mode 100644 index 00000000..db635693 --- /dev/null +++ b/Documentation/btrfs-restore.8 @@ -0,0 +1,160 @@ +'\" t +.\" Title: btrfs-restore +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-RESTORE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-restore \- try to restore files from a damaged btrfs filesystem image +.SH "SYNOPSIS" +.sp +\fBbtrfs restore\fR [options] \fI<device>\fR \fI<path>\fR | \-l \fI<device>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs restore\fR is used to try to salvage files from a damaged filesystem and restore them into \fI<path>\fR or just list the subvolume tree roots\&. The filesystem image is not modified\&. +.sp +If the filesystem is damaged and cannot be repaired by the other tools (\fBbtrfs\-check\fR(8) or \fBbtrfs\-rescue\fR(8)), \fBbtrfs restore\fR could be used to retrieve file data, as far as the metadata are readable\&. The checks done by restore are less strict and the process is usually able to get far enough to retrieve data from the whole filesystem\&. This comes at a cost that some data might be incomplete or from older versions if they\(cqre available\&. +.sp +There are several options to attempt restoration of various file metadata type\&. You can try a dry run first to see how well the process goes and use further options to extend the set of restored metadata\&. +.sp +For images with damaged tree structures, there are several options to point the process to some spare copy\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +It is recommended to read the following btrfs wiki page if your data is not salvaged with default option: \m[blue]\fBhttps://btrfs\&.wiki\&.kernel\&.org/index\&.php/Restore\fR\m[] +.sp .5v +.RE +.SH "OPTIONS" +.PP +\-s|\-\-snapshots +.RS 4 +get also snapshots that are skipped by default +.RE +.PP +\-x|\-\-xattr +.RS 4 +get extended attributes +.RE +.PP +\-m|\-\-metadata +.RS 4 +restore owner, mode and times for files and directories +.RE +.PP +\-S|\-\-symlinks +.RS 4 +restore symbolic links as well as normal files +.RE +.PP +\-v|\-\-verbose +.RS 4 +be verbose and print what is being restored +.RE +.PP +\-i|\-\-ignore\-errors +.RS 4 +ignore errors during restoration and continue +.RE +.PP +\-o|\-\-overwrite +.RS 4 +overwrite directories/files in +\fI<path>\fR, eg\&. for repeated runs +.RE +.PP +\-t \fI<bytenr>\fR +.RS 4 +use +\fI<bytenr>\fR +to read the root tree +.RE +.PP +\-f \fI<bytenr>\fR +.RS 4 +only restore files that are under specified subvolume root pointed by +\fI<bytenr>\fR +.RE +.PP +\-u|\-\-super \fI<mirror>\fR +.RS 4 +use given superblock mirror identified by +\fI<mirror>\fR, it can be 0,1 or 2 +.RE +.PP +\-r|\-\-root \fI<rootid>\fR +.RS 4 +only restore files that are under a specified subvolume whose objectid is +\fI<rootid>\fR +.RE +.PP +\-d +.RS 4 +find directory +.RE +.PP +\-l|\-\-list\-roots +.RS 4 +list subvolume tree roots, can be used as argument for +\fI\-r\fR +.RE +.PP +\-D|\-\-dry\-run +.RS 4 +dry run (only list files that would be recovered) +.RE +.PP +\-\-path\-regex \fI<regex>\fR +.RS 4 +restore only filenames matching a regular expression (\fBregex\fR(7)) with a mandatory format +.sp +\fB^/(|home(|/username(|/Desktop(|/\&.*))))$\fR +.sp +The format is not very comfortable and restores all files in the directories in the whole path, so this is not useful for restoring single file in a deep hierarchy\&. +.RE +.PP +\-c +.RS 4 +ignore case (\-\-path\-regex only) +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs restore\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-rescue\fR(8), \fBbtrfs\-check\fR(8) diff --git a/Documentation/btrfs-scrub.8 b/Documentation/btrfs-scrub.8 new file mode 100644 index 00000000..a393a553 --- /dev/null +++ b/Documentation/btrfs-scrub.8 @@ -0,0 +1,189 @@ +'\" t +.\" Title: btrfs-scrub +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-SCRUB" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-scrub \- scrub btrfs filesystem, verify block checksums +.SH "SYNOPSIS" +.sp +\fBbtrfs scrub\fR \fI<subcommand>\fR \fI<args>\fR +.SH "DESCRIPTION" +.sp +\fBbtrfs scrub\fR is used to scrub a btrfs filesystem, which will read all data and metadata blocks from all devices and verify checksums\&. Automatically repair corrupted blocks if there\(cqs a correct copy available\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +Scrub is not a filesystem checker (fsck) and does not verify nor repair structural damage in the filesystem\&. +.sp .5v +.RE +.sp +The user is supposed to run it manually or via a periodic system service\&. The recommended period is a month but could be less\&. The estimated device bandwidth utilization is about 80% on an idle filesystem\&. The IO priority class is by default \fIidle\fR so background scrub should not significantly interfere with normal filesystem operation\&. +.sp +The scrubbing status is recorded in \fI/var/lib/btrfs/\fR in textual files named \fIscrub\&.status\&.UUID\fR for a filesystem identified by the given UUID\&. (Progress state is communicated through a named pipe in file \fIscrub\&.progress\&.UUID\fR in the same directory\&.) The status file is updated every 5 seconds\&. A resumed scrub will continue from the last saved position\&. +.SH "SUBCOMMAND" +.PP +\fBcancel\fR \fI<path>\fR|\fI<device>\fR +.RS 4 +If a scrub is running on the filesystem identified by +\fIpath\fR +cancel it\&. +.sp +If a +\fIdevice\fR +is specified, the corresponding filesystem is found and +\fBbtrfs scrub cancel\fR +behaves as if it was called on that filesystem\&. +.RE +.PP +\fBresume\fR [\-BdqrR] [\-c \fI<ioprio_class>\fR \-n \fI<ioprio_classdata>\fR] \fI<path>\fR|\fI<device>\fR +.RS 4 +Resume a cancelled or interrupted scrub on the filesystem identified by +\fIpath\fR +or on a given +\fIdevice\fR\&. +.sp +Does not start a new scrub if the last scrub finished successfully\&. +.sp +\fBOptions\fR +.sp +see +\fBscrub start\fR\&. +.RE +.PP +\fBstart\fR [\-BdqrRf] [\-c \fI<ioprio_class>\fR \-n \fI<ioprio_classdata>\fR] \fI<path>\fR|\fI<device>\fR +.RS 4 +Start a scrub on all devices of the filesystem identified by +\fIpath\fR +or on a single +\fIdevice\fR\&. If a scrub is already running, the new one fails\&. +.sp +Without options, scrub is started as a background process\&. +.sp +The default IO priority of scrub is the idle class\&. The priority can be configured similar to the +\fBionice\fR(1) syntax using +\fI\-c\fR +and +\fI\-n\fR +options\&. +.sp +\fBOptions\fR +.PP +\-B +.RS 4 +do not background and print scrub statistics when finished +.RE +.PP +\-d +.RS 4 +print separate statistics for each device of the filesystem (\fI\-B\fR +only) at the end +.RE +.PP +\-q +.RS 4 +be quiet, omit error messages and statistics +.RE +.PP +\-r +.RS 4 +run in read\-only mode, do not attempt to correct anything, can be run on a read\-only filesystem +.RE +.PP +\-R +.RS 4 +raw print mode, print full data instead of summary +.RE +.PP +\-c \fI<ioprio_class>\fR +.RS 4 +set IO priority class (see +\fBionice\fR(1) manpage) +.RE +.PP +\-n \fI<ioprio_classdata>\fR +.RS 4 +set IO priority classdata (see +\fBionice\fR(1) manpage) +.RE +.PP +\-f +.RS 4 +force starting new scrub even if a scrub is already running, this can useful when scrub status file is damaged and reports a running scrub although it is not, but should not normally be necessary +.RE +.RE +.PP +\fBstatus\fR [\-d] \fI<path>\fR|\fI<device>\fR +.RS 4 +Show status of a running scrub for the filesystem identified by +\fIpath\fR +or for the specified +\fIdevice\fR\&. +.sp +If no scrub is running, show statistics of the last finished or cancelled scrub for that filesystem or device\&. +.sp +\fBOptions\fR +.PP +\-d +.RS 4 +print separate statistics for each device of the filesystem +.RE +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs scrub\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure: +.PP +1 +.RS 4 +scrub couldn\(cqt be performed +.RE +.PP +2 +.RS 4 +there is nothing to resume +.RE +.PP +3 +.RS 4 +scrub found uncorrectable errors +.RE +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBionice\fR(1) diff --git a/Documentation/btrfs-select-super.8 b/Documentation/btrfs-select-super.8 new file mode 100644 index 00000000..e56b290a --- /dev/null +++ b/Documentation/btrfs-select-super.8 @@ -0,0 +1,111 @@ +'\" t +.\" Title: btrfs-select-super +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-SELECT\-SUPER" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-select-super \- overwrite primary superblock with a backup copy +.SH "SYNOPSIS" +.sp +\fBbtrfs\-select\-super\fR \-s number \fI<device>\fR +.SH "DESCRIPTION" +.sp +Destructively overwrite all copies of the superblock with a specified copy\&. This helps in certain cases, for example when write barriers were disabled during a power failure and not all superblocks were written, or if the primary superblock is damaged, eg\&. accidentally overwritten\&. +.sp +The filesystem specified by \fIdevice\fR must not be mounted\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +\fBPrior to overwriting the primary superblock, please make sure that the backup copies are valid!\fR +.sp .5v +.RE +.sp +To dump a superblock use the \fBbtrfs inspect\-internal dump\-super\fR command\&. +.sp +Then run the check (in the non\-repair mode) using the command \fBbtrfs check \-s\fR where \fI\-s\fR specifies the superblock copy to use\&. +.sp +Superblock copies exist in the following offsets on the device: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +primary: +\fI64KiB\fR +(65536) +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +1st copy: +\fI64MiB\fR +(67108864) +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +2nd copy: +\fI256GiB\fR +(274877906944) +.RE +.sp +A superblock size is \fI4KiB\fR (4096)\&. +.SH "OPTIONS" +.PP +\-s|\-\-super \fI<superblock>\fR +.RS 4 +use \*(Aqsuperblock\(cqth superblock copy, valid values are 0 1 or 2 if the respective superblock offset is within the device size +.RE +.SH "SEE ALSO" +.sp +\fBbtrfs\-inspect\-internal\fR(8), \fBbtrfsck check\fR(8) diff --git a/Documentation/btrfs-send.8 b/Documentation/btrfs-send.8 new file mode 100644 index 00000000..1a29bfa0 --- /dev/null +++ b/Documentation/btrfs-send.8 @@ -0,0 +1,102 @@ +'\" t +.\" Title: btrfs-send +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-SEND" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-send \- generate a stream of changes between two subvolume snapshots +.SH "SYNOPSIS" +.sp +\fBbtrfs send\fR [\-ve] [\-p \fI<parent>\fR] [\-c \fI<clone\-src>\fR] [\-f \fI<outfile>\fR] \fI<subvol>\fR [\fI<subvol>\fR\&...] +.SH "DESCRIPTION" +.sp +This command will generate a stream of instructions that describe changes between two subvolume snapshots\&. The stream can be consumed by the \fBbtrfs receive\fR command to replicate the sent snapshot on a different filesystem\&. The command operates in two modes: full and incremental\&. +.sp +All snapshots involved in one send command must be read\-only, and this status cannot be changed as long as there\(cqs a running send operation that uses the snapshot\&. +.sp +In the full mode, the entire snapshot data and metadata will end up in the stream\&. +.sp +In the incremental mode (options \fI\-p\fR and \fI\-c\fR), previously sent snapshots that are available on both the sending and receiving side can be used to reduce the amount of information that has to be sent to reconstruct the sent snapshot on a different filesystem\&. +.sp +The \fI\-p \fR\fI\fI<parent>\fR\fR option can be omitted when \fI\-c \fR\fI\fI<clone\-src>\fR\fR options are given, in which case \fBbtrfs send\fR will determine a suitable parent from among the clone sources\&. +.sp +You must not specify clone sources unless you guarantee that these snapshots are exactly in the same state on both sides\(emboth for the sender and the receiver\&. +.sp +\fBOptions\fR +.PP +\-e +.RS 4 +if sending multiple subvolumes at once, use the new format and omit the +\fIend cmd\fR +marker in the stream separating the subvolumes +.RE +.PP +\-p \fI<parent>\fR +.RS 4 +send an incremental stream from +\fIparent\fR +to +\fIsubvol\fR +.RE +.PP +\-c \fI<clone\-src>\fR +.RS 4 +use this snapshot as a clone source for an incremental send (multiple allowed) +.RE +.PP +\-f \fI<outfile>\fR +.RS 4 +output is normally written to standard output so it can be, for example, piped to btrfs receive\&. Use this option to write it to a file instead\&. +.RE +.PP +\-\-no\-data +.RS 4 +send in +\fINO_FILE_DATA\fR +mode +.sp +The output stream does not contain any file data and thus cannot be used to transfer changes\&. This mode is faster and is useful to show the differences in metadata\&. +.RE +.PP +\-v|\-\-verbose +.RS 4 +enable verbose output, print generated commands in a readable form, (each occurrence of this option increases the verbosity level) +.RE +.PP +\-q|\-\-quiet +.RS 4 +suppress all messages except errors +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs send\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-receive\fR(8) diff --git a/Documentation/btrfs-subvolume.8 b/Documentation/btrfs-subvolume.8 new file mode 100644 index 00000000..76688bd2 --- /dev/null +++ b/Documentation/btrfs-subvolume.8 @@ -0,0 +1,382 @@ +'\" t +.\" Title: btrfs-subvolume +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-SUBVOLUME" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-subvolume \- manage btrfs subvolumes +.SH "SYNOPSIS" +.sp +\fBbtrfs subvolume\fR \fI<subcommand>\fR [\fI<args>\fR] +.SH "DESCRIPTION" +.sp +\fBbtrfs subvolume\fR is used to create/delete/list/show btrfs subvolumes and snapshots\&. +.SH "SUBVOLUME AND SNAPSHOT" +.sp +A subvolume is a part of filesystem with its own independent file/directory hierarchy\&. Subvolumes can share file extents\&. A snapshot is also subvolume, but with a given initial content of the original subvolume\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +A subvolume in btrfs is not like an LVM logical volume, which is block\-level snapshot while btrfs subvolumes are file extent\-based\&. +.sp .5v +.RE +.sp +A subvolume looks like a normal directory, with some additional operations described below\&. Subvolumes can be renamed or moved, nesting subvolumes is not restricted but has some implications regarding snapshotting\&. +.sp +A subvolume in btrfs can be accessed in two ways: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +like any other directory that is accessible to the user +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +like a separately mounted filesystem (options +\fIsubvol\fR +or +\fIsubvolid\fR) +.RE +.sp +In the latter case the parent directory is not visible and accessible\&. This is similar to a bind mount, and in fact the subvolume mount does exactly that\&. +.sp +A freshly created filesystem is also a subvolume, called \fItop\-level\fR, internally has an id 5\&. This subvolume cannot be removed or replaced by another subvolume\&. This is also the subvolume that will be mounted by default, unless the default subvolume has been changed (see subcommand \fIset\-default\fR)\&. +.sp +A snapshot is a subvolume like any other, with given initial content\&. By default, snapshots are created read\-write\&. File modifications in a snapshot do not affect the files in the original subvolume\&. +.SH "SUBCOMMAND" +.PP +\fBcreate\fR [\-i \fI<qgroupid>\fR] [<dest>/]\fI<name>\fR +.RS 4 +Create a subvolume +\fI<name>\fR +in +\fI<dest>\fR\&. +.sp +If +\fI<dest>\fR +is not given, subvolume +\fI<name>\fR +will be created in the current directory\&. +.sp +\fBOptions\fR +.PP +\-i \fI<qgroupid>\fR +.RS 4 +Add the newly created subvolume to a qgroup\&. This option can be given multiple times\&. +.RE +.RE +.PP +\fBdelete\fR [options] \fI<subvolume>\fR [\fI<subvolume>\fR\&...] +.RS 4 +Delete the subvolume(s) from the filesystem\&. +.sp +If +\fI<subvolume>\fR +is not a subvolume, btrfs returns an error but continues if there are more arguments to process\&. +.sp +The corresponding directory is removed instantly but the data blocks are removed later in the background\&. The command returns immediately\&. See +\fBbtrfs subvolume sync\fR +how to wait until the subvolume gets completely removed\&. +.sp +The deletion does not involve full transaction commit by default due to performance reasons\&. As a consequence, the subvolume may appear again after a crash\&. Use one of the +\fI\-\-commit\fR +options to wait until the operation is safely stored on the device\&. +.sp +\fBOptions\fR +.PP +\-c|\-\-commit\-after +.RS 4 +wait for transaction commit at the end of the operation\&. +.RE +.PP +\-C|\-\-commit\-each +.RS 4 +wait for transaction commit after deleting each subvolume\&. +.RE +.PP +\-v|\-\-verbose +.RS 4 +verbose output of operations\&. +.RE +.RE +.PP +\fBfind\-new\fR \fI<subvolume>\fR \fI<last_gen>\fR +.RS 4 +List the recently modified files in a subvolume, after +\fI<last_gen>\fR +generation\&. +.RE +.PP +\fBget\-default\fR \fI<path>\fR +.RS 4 +Get the default subvolume of the filesystem +\fI<path>\fR\&. +.sp +The output format is similar to +\fBsubvolume list\fR +command\&. +.RE +.PP +\fBlist\fR [options] [\-G [+|\-]\fI<value>\fR] [\-C [+|\-]\fI<value>\fR] [\-\-sort=rootid,gen,ogen,path] \fI<path>\fR +.RS 4 +List the subvolumes present in the filesystem +\fI<path>\fR\&. +.sp +For every subvolume the following information is shown by default: +.sp +ID +\fI<ID>\fR +gen +\fI<generation>\fR +top level +\fI<ID>\fR +path +\fI<path>\fR +.sp +where ID is subvolume\(cqs id, gen is an internal counter which is updated every transaction, top level is the same as parent subvolume\(cqs id, and path is the relative path of the subvolume to the top level subvolume\&. The subvolume\(cqs ID may be used by the subvolume set\-default command, or at mount time via the subvolid= option\&. +.sp +\fBOptions\fR +.PP +Path filtering +.RS 4 +.PP +\-o +.RS 4 +print only subvolumes below specified +\fI<path>\fR\&. +.RE +.PP +\-a +.RS 4 +print all the subvolumes in the filesystem and distinguish between absolute and relative path with respect to the given +\fI<path>\fR\&. +.RE +.RE +.PP +Field selection +.RS 4 +.PP +\-p +.RS 4 +print the parent ID (\fIparent\fR +here means the subvolume which contains this subvolume)\&. +.RE +.PP +\-c +.RS 4 +print the ogeneration of the subvolume, aliases: ogen or origin generation\&. +.RE +.PP +\-g +.RS 4 +print the generation of the subvolume (default)\&. +.RE +.PP +\-u +.RS 4 +print the UUID of the subvolume\&. +.RE +.PP +\-q +.RS 4 +print the parent UUID of the subvolume (\fIparent\fR +here means subvolume of which this subvolume is a snapshot)\&. +.RE +.PP +\-R +.RS 4 +print the UUID of the sent subvolume, where the subvolume is the result of a receive operation\&. +.RE +.RE +.PP +Type filtering +.RS 4 +.PP +\-s +.RS 4 +only snapshot subvolumes in the filesystem will be listed\&. +.RE +.PP +\-r +.RS 4 +only readonly subvolumes in the filesystem will be listed\&. +.RE +.PP +\-d +.RS 4 +list deleted subvolumes that are not yet cleaned\&. +.RE +.RE +.PP +Other +.RS 4 +.PP +\-t +.RS 4 +print the result as a table\&. +.RE +.RE +.PP +Sorting +.RS 4 +.PP +\-G [+|\-]\fI<value>\fR +.RS 4 +list subvolumes in the filesystem that its generation is >=, \(la or = value\&. \*(Aq+\*(Aq means >= value, \*(Aq\-\*(Aq means <= value, If there is neither \*(Aq+\*(Aq nor \*(Aq\-\*(Aq, it means = value\&. +.RE +.PP +\-C [+|\-]\fI<value>\fR +.RS 4 +list subvolumes in the filesystem that its ogeneration is >=, <= or = value\&. The usage is the same to +\fI\-G\fR +option\&. +.RE +.PP +\-\-sort=rootid,gen,ogen,path +.RS 4 +list subvolumes in order by specified items\&. you can add \*(Aq+\*(Aq or \*(Aq\-\*(Aq in front of each items, \*(Aq+\*(Aq means ascending, \*(Aq\-\*(Aq means descending\&. The default is ascending\&. +.sp +for \-\-sort you can combine some items together by \*(Aq,\*(Aq, just like \-\-sort=+ogen,\-gen,path,rootid\&. +.RE +.RE +.RE +.PP +\fBset\-default\fR [\fI<subvolume>\fR|\fI<id>\fR \fI<path>\fR] +.RS 4 +Set the default subvolume for the (mounted) filesystem\&. +.sp +Set the default subvolume for the (mounted) filesystem at +\fI<path>\fR\&. This will hide the top\-level subvolume (i\&.e\&. the one mounted with +\fIsubvol=/\fR +or +\fIsubvolid=5\fR)\&. Takes action on next mount\&. +.sp +There are two ways how to specify the subvolume, by +\fI<id>\fR +or by the +\fI<subvolume>\fR +path\&. The id can be obtained from +\fBbtrfs subvolume list\fR, +\fBbtrfs subvolume show\fR +or +\fBbtrfs inspect\-internal rootid\fR\&. +.RE +.PP +\fBshow\fR [options] \fI<path>\fR|\fI<mnt>\fR +.RS 4 +Show information of a given subvolume in the +\fI<path>\fR\&. +.sp +\fBOptions\fR +.PP +\-r|\-\-rootid +.RS 4 +rootid of the subvolume\&. +.PP +\-u|\-\-uuid +.RS 4 +UUID of the subvolume\&. +.RE +.sp +If no option is specified, subvolume information of +\fI<path>\fR +is shown, otherwise the subvolume information of rootid or UUID in the filesystem is shown\&. +.RE +.RE +.PP +\fBsnapshot\fR [\-r|\-i \fI<qgroupid>\fR] \fI<source>\fR \fI<dest>\fR|[<dest>/]\fI<name>\fR +.RS 4 +Create a snapshot of the subvolume +\fI<source>\fR +with the name +\fI<name>\fR +in the +\fI<dest>\fR +directory\&. +.sp +If only +\fI<dest>\fR +is given, the subvolume will be named the basename of +\fI<source>\fR\&. If +\fI<source>\fR +is not a subvolume, btrfs returns an error\&. +.sp +\fBOptions\fR +.PP +\-r +.RS 4 +Make the new snapshot read only\&. +.RE +.PP +\-i \fI<qgroupid>\fR +.RS 4 +Add the newly created subvolume to a qgroup\&. This option can be given multiple times\&. +.RE +.RE +.PP +\fBsync\fR \fI<path>\fR [subvolid\&...] +.RS 4 +Wait until given subvolume(s) are completely removed from the filesystem after deletion\&. If no subvolume id is given, wait until all current deletion requests are completed, but do not wait for subvolumes deleted in the meantime\&. +.sp +\fBOptions\fR +.PP +\-s \fI<N>\fR +.RS 4 +sleep N seconds between checks (default: 1) +.RE +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs subvolume\fR returns a zero exit status if it succeeds\&. A non\-zero value is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBmkfs\&.btrfs\fR(8), \fBmount\fR(8), \fBbtrfs\-quota\fR(8), \fBbtrfs\-qgroup\fR(8), diff --git a/Documentation/btrfs.5 b/Documentation/btrfs.5 new file mode 100644 index 00000000..433e6dd6 --- /dev/null +++ b/Documentation/btrfs.5 @@ -0,0 +1,1131 @@ +'\" t +.\" Title: btrfs-man5 +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS\-MAN5" "5" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs-man5 \- topics about the BTRFS filesystem (mount options, supported file attributes and other) +.SH "DESCRIPTION" +.sp +This document describes topics related to BTRFS that are not specific to the tools\&. Currently covers: +.sp +.RS 4 +.ie n \{\ +\h'-04' 1.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 1." 4.2 +.\} +mount options +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04' 2.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 2." 4.2 +.\} +filesystem features +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04' 3.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 3." 4.2 +.\} +filesystem limits +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04' 4.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 4." 4.2 +.\} +file attributes +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04' 5.\h'+01'\c +.\} +.el \{\ +.sp -1 +.IP " 5." 4.2 +.\} +control device +.RE +.SH "MOUNT OPTIONS" +.sp +This section describes mount options specific to BTRFS\&. For the generic mount options please refer to \fBmount\fR(8) manpage\&. The options are sorted alphabetically (discarding the \fIno\fR prefix)\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +most mount options apply to the whole filesystem and only options in the first mounted subvolume will take effect\&. This is due to lack of implementation and may change in the future\&. This means that (for example) you can\(cqt set per\-subvolume \fInodatacow\fR, \fInodatasum\fR, or \fIcompress\fR using mount options\&. This should eventually be fixed, but it has proved to be difficult to implement correctly within the Linux VFS framework\&. +.sp .5v +.RE +.PP +\fBacl\fR, \fBnoacl\fR +.RS 4 +(default: on) +.sp +Enable/disable support for Posix Access Control Lists (ACLs)\&. See the +\fBacl\fR(5) manual page for more information about ACLs\&. +.sp +The support for ACL is build\-time configurable (BTRFS_FS_POSIX_ACL) and mount fails if +\fIacl\fR +is requested but the feature is not compiled in\&. +.RE +.PP +\fBautodefrag\fR, \fBnoautodefrag\fR +.RS 4 +(since: 3\&.0, default: off) +.sp +Enable automatic file defragmentation\&. When enabled, small random writes into files (in a range of tens of kilobytes, currently it\(cqs 64K) are detected and queued up for the defragmentation process\&. Not well suited for large database workloads\&. +.sp +The read latency may increase due to reading the adjacent blocks that make up the range for defragmentation, successive write will merge the blocks in the new location\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +Defragmenting with Linux kernel versions < 3\&.9 or \(>= 3\&.14\-rc2 as well as with Linux stable kernel versions \(>= 3\&.10\&.31, \(>= 3\&.12\&.12 or \(>= 3\&.13\&.4 will break up the reflinks of COW data (for example files copied with +\fBcp \-\-reflink\fR, snapshots or de\-duplicated data)\&. This may cause considerable increase of space usage depending on the broken up reflinks\&. +.sp .5v +.RE +.RE +.PP +\fBbarrier\fR, \fBnobarrier\fR +.RS 4 +(default: on) +.sp +Ensure that all IO write operations make it through the device cache and are stored permanently when the filesystem is at its consistency checkpoint\&. This typically means that a flush command is sent to the device that will synchronize all pending data and ordinary metadata blocks, then writes the superblock and issues another flush\&. +.sp +The write flushes incur a slight hit and also prevent the IO block scheduler to reorder requests in a more effective way\&. Disabling barriers gets rid of that penalty but will most certainly lead to a corrupted filesystem in case of a crash or power loss\&. The ordinary metadata blocks could be yet unwritten at the time the new superblock is stored permanently, expecting that the block pointers to metadata were stored permanently before\&. +.sp +On a device with a volatile battery\-backed write\-back cache, the +\fInobarrier\fR +option will not lead to filesystem corruption as the pending blocks are supposed to make it to the permanent storage\&. +.RE +.PP +\fBcheck_int\fR, \fBcheck_int_data\fR, \fBcheck_int_print_mask=\fR\fB\fIvalue\fR\fR +.RS 4 +(since: 3\&.0, default: off) +.sp +These debugging options control the behavior of the integrity checking module (the BTRFS_FS_CHECK_INTEGRITY config option required)\&. The main goal is to verify that all blocks from a given transaction period are properly linked\&. +.sp +\fIcheck_int\fR +enables the integrity checker module, which examines all block write requests to ensure on\-disk consistency, at a large memory and CPU cost\&. +.sp +\fIcheck_int_data\fR +includes extent data in the integrity checks, and implies the +\fIcheck_int\fR +option\&. +.sp +\fIcheck_int_print_mask\fR +takes a bitmask of BTRFSIC_PRINT_MASK_* values as defined in +\fIfs/btrfs/check\-integrity\&.c\fR, to control the integrity checker module behavior\&. +.sp +See comments at the top of +\fIfs/btrfs/check\-integrity\&.c\fR +for more information\&. +.RE +.PP +\fBclear_cache\fR +.RS 4 +Force clearing and rebuilding of the disk space cache if something has gone wrong\&. See also: +\fIspace_cache\fR\&. +.RE +.PP +\fBcommit=\fR\fB\fIseconds\fR\fR +.RS 4 +(since: 3\&.12, default: 30) +.sp +Set the interval of periodic transaction commit when data are synchronized to permanent storage\&. Higher interval values lead to larger amount of unwritten data, which has obvious consequences when the system crashes\&. The upper bound is not forced, but a warning is printed if it\(cqs more than 300 seconds (5 minutes)\&. Use with care\&. +.RE +.PP +\fBcompress\fR, \fBcompress=\fR\fB\fItype\fR\fR, \fBcompress\-force\fR, \fBcompress\-force=\fR\fB\fItype\fR\fR +.RS 4 +(default: off) +.sp +Control BTRFS file data compression\&. Type may be specified as +\fIzlib\fR, +\fIlzo\fR, +\fIzstd\fR +or +\fIno\fR +(for no compression, used for remounting)\&. If no type is specified, +\fIzlib\fR +is used\&. If +\fIcompress\-force\fR +is specified, then compression will always be attempted, but the data may end up uncompressed if the compression would make them larger\&. +.sp +Otherwise some simple heuristics are applied to detect an incompressible file\&. If the first blocks written to a file are not compressible, the whole file is permanently marked to skip compression\&. As this is too simple, the +\fIcompress\-force\fR +is a workaround that will compress most of the files at the cost of some wasted CPU cycles on failed attempts\&. Since kernel 4\&.15, a set of heuristic algorithms have been improved by using frequency sampling, repeated pattern detection and Shannon entropy calculation to avoid that\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +If compression is enabled, +\fInodatacow\fR +and +\fInodatasum\fR +are disabled\&. +.sp .5v +.RE +.RE +.PP +\fBdatacow\fR, \fBnodatacow\fR +.RS 4 +(default: on) +.sp +Enable data copy\-on\-write for newly created files\&. +\fINodatacow\fR +implies +\fInodatasum\fR, and disables +\fIcompression\fR\&. All files created under +\fInodatacow\fR +are also set the NOCOW file attribute (see +\fBchattr\fR(1))\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +If +\fInodatacow\fR +or +\fInodatasum\fR +are enabled, compression is disabled\&. +.sp .5v +.RE +Updates in\-place improve performance for workloads that do frequent overwrites, at the cost of potential partial writes, in case the write is interrupted (system crash, device failure)\&. +.RE +.PP +\fBdatasum\fR, \fBnodatasum\fR +.RS 4 +(default: on) +.sp +Enable data checksumming for newly created files\&. +\fIDatasum\fR +implies +\fIdatacow\fR, ie\&. the normal mode of operation\&. All files created under +\fInodatasum\fR +inherit the "no checksums" property, however there\(cqs no corresponding file attribute (see +\fBchattr\fR(1))\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +If +\fInodatacow\fR +or +\fInodatasum\fR +are enabled, compression is disabled\&. +.sp .5v +.RE +There is a slight performance gain when checksums are turned off, the corresponding metadata blocks holding the checksums do not need to updated\&. The cost of checksumming of the blocks in memory is much lower than the IO, modern CPUs feature hardware support of the checksumming algorithm\&. +.RE +.PP +\fBdegraded\fR +.RS 4 +(default: off) +.sp +Allow mounts with less devices than the RAID profile constraints require\&. A read\-write mount (or remount) may fail when there are too many devices missing, for example if a stripe member is completely missing from RAID0\&. +.sp +Since 4\&.14, the constraint checks have been improved and are verified on the chunk level, not an the device level\&. This allows degraded mounts of filesystems with mixed RAID profiles for data and metadata, even if the device number constraints would not be satisfied for some of the profiles\&. +.sp +Example: metadata \(em raid1, data \(em single, devices \(em /dev/sda, /dev/sdb +.sp +Suppose the data are completely stored on +\fIsda\fR, then missing +\fIsdb\fR +will not prevent the mount, even if 1 missing device would normally prevent (any) +\fIsingle\fR +profile to mount\&. In case some of the data chunks are stored on +\fIsdb\fR, then the constraint of single/data is not satisfied and the filesystem cannot be mounted\&. +.RE +.PP +\fBdevice=\fR\fB\fIdevicepath\fR\fR +.RS 4 +Specify a path to a device that will be scanned for BTRFS filesystem during mount\&. This is usually done automatically by a device manager (like udev) or using the +\fBbtrfs device scan\fR +command (eg\&. run from the initial ramdisk)\&. In cases where this is not possible the +\fIdevice\fR +mount option can help\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +booting eg\&. a RAID1 system may fail even if all filesystem\(cqs +\fIdevice\fR +paths are provided as the actual device nodes may not be discovered by the system at that point\&. +.sp .5v +.RE +.RE +.PP +\fBdiscard\fR, \fBnodiscard\fR +.RS 4 +(default: off) +.sp +Enable discarding of freed file blocks\&. This is useful for SSD devices, thinly provisioned LUNs, or virtual machine images; however, every storage layer must support discard for it to work\&. if the backing device does not support asynchronous queued TRIM, then this operation can severely degrade performance, because a synchronous TRIM operation will be attempted instead\&. Queued TRIM requires newer than SATA revision 3\&.1 chipsets and devices\&. +.RE +.sp +If it is not necessary to immediately discard freed blocks, then the \fBfstrim\fR tool can be used to discard all free blocks in a batch\&. Scheduling a TRIM during a period of low system activity will prevent latent interference with the performance of other operations\&. Also, a device may ignore the TRIM command if the range is too small, so running a batch discard has a greater probability of actually discarding the blocks\&. +.sp +If discarding is not necessary to be done at the block freeing time, there\(cqs \fBfstrim\fR(8) tool that lets the filesystem discard all free blocks in a batch, possibly not much interfering with other operations\&. Also, the device may ignore the TRIM command if the range is too small, so running the batch discard can actually discard the blocks\&. +.PP +\fBenospc_debug\fR, \fBnoenospc_debug\fR +.RS 4 +(default: off) +.sp +Enable verbose output for some ENOSPC conditions\&. It\(cqs safe to use but can be noisy if the system reaches near\-full state\&. +.RE +.PP +\fBfatal_errors=\fR\fB\fIaction\fR\fR +.RS 4 +(since: 3\&.4, default: bug) +.sp +Action to take when encountering a fatal error\&. +.PP +\fBbug\fR +.RS 4 +\fIBUG()\fR +on a fatal error, the system will stay in the crashed state and may be still partially usable, but reboot is required for full operation +.RE +.PP +\fBpanic\fR +.RS 4 +\fIpanic()\fR +on a fatal error, depending on other system configuration, this may be followed by a reboot\&. Please refer to the documentation of kernel boot parameters, eg\&. +\fIpanic\fR, +\fIoops\fR +or +\fIcrashkernel\fR\&. +.RE +.RE +.PP +\fBflushoncommit\fR, \fBnoflushoncommit\fR +.RS 4 +(default: off) +.sp +This option forces any data dirtied by a write in a prior transaction to commit as part of the current commit, effectively a full filesystem sync\&. +.sp +This makes the committed state a fully consistent view of the file system from the application\(cqs perspective (i\&.e\&. it includes all completed file system operations)\&. This was previously the behavior only when a snapshot was created\&. +.sp +When off, the filesystem is consistent but buffered writes may last more than one transaction commit\&. +.RE +.PP +\fBfragment=\fR\fB\fItype\fR\fR +.RS 4 +(depends on compile\-time option BTRFS_DEBUG, since: 4\&.4, default: off) +.sp +A debugging helper to intentionally fragment given +\fItype\fR +of block groups\&. The type can be +\fIdata\fR, +\fImetadata\fR +or +\fIall\fR\&. This mount option should not be used outside of debugging environments and is not recognized if the kernel config option +\fIBTRFS_DEBUG\fR +is not enabled\&. +.RE +.PP +\fBinode_cache\fR, \fBnoinode_cache\fR +.RS 4 +(since: 3\&.0, default: off) +.sp +Enable free inode number caching\&. Not recommended to use unless files on your filesystem get assigned inode numbers that are approaching 2^64\&. Normally, new files in each subvolume get assigned incrementally (plus one from the last time) and are not reused\&. The mount option turns on caching of the existing inode numbers and reuse of inode numbers of deleted files\&. +.sp +This option may slow down your system at first run, or after mounting without the option\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +Defaults to off due to a potential overflow problem when the free space checksums don\(cqt fit inside a single page\&. +.sp .5v +.RE +Don\(cqt use this option unless you really need it\&. The inode number limit on 64bit system is 2^64, which is practically enough for the whole filesystem lifetime\&. Due to implementation of linux VFS layer, the inode numbers on 32bit systems are only 32 bits wide\&. This lowers the limit significantly and makes it possible to reach it\&. In such case, this mount option will help\&. Alternatively, files with high inode numbers can be copied to a new subvolume which will effectively start the inode numbers from the beginning again\&. +.RE +.PP +\fBlogreplay\fR, \fBnologreplay\fR +.RS 4 +(default: on, even read\-only) +.sp +Enable/disable log replay at mount time\&. See also +\fItreelog\fR\&. Note that +\fInologreplay\fR +is the same as +\fInorecovery\fR\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +currently, the tree log is replayed even with a read\-only mount! To disable that behaviour, mount also with +\fInologreplay\fR\&. +.sp .5v +.RE +.RE +.PP +\fBmax_inline=\fR\fB\fIbytes\fR\fR +.RS 4 +(default: min(2048, page size) ) +.sp +Specify the maximum amount of space, that can be inlined in a metadata B\-tree leaf\&. The value is specified in bytes, optionally with a K suffix (case insensitive)\&. In practice, this value is limited by the filesystem block size (named +\fIsectorsize\fR +at mkfs time), and memory page size of the system\&. In case of sectorsize limit, there\(cqs some space unavailable due to leaf headers\&. For example, a 4k sectorsize, maximum size of inline data is about 3900 bytes\&. +.sp +Inlining can be completely turned off by specifying 0\&. This will increase data block slack if file sizes are much smaller than block size but will reduce metadata consumption in return\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +the default value has changed to 2048 in kernel 4\&.6\&. +.sp .5v +.RE +.RE +.PP +\fBmetadata_ratio=\fR\fB\fIvalue\fR\fR +.RS 4 +(default: 0, internal logic) +.sp +Specifies that 1 metadata chunk should be allocated after every +\fIvalue\fR +data chunks\&. Default behaviour depends on internal logic, some percent of unused metadata space is attempted to be maintained but is not always possible if there\(cqs not enough space left for chunk allocation\&. The option could be useful to override the internal logic in favor of the metadata allocation if the expected workload is supposed to be metadata intense (snapshots, reflinks, xattrs, inlined files)\&. +.RE +.PP +\fBnorecovery\fR +.RS 4 +(since: 4\&.5, default: off) +.sp +Do not attempt any data recovery at mount time\&. This will disable +\fIlogreplay\fR +and avoids other write operations\&. Note that this option is the same as +\fInologreplay\fR\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +The opposite option +\fIrecovery\fR +used to have different meaning but was changed for consistency with other filesystems, where +\fInorecovery\fR +is used for skipping log replay\&. BTRFS does the same and in general will try to avoid any write operations\&. +.sp .5v +.RE +.RE +.PP +\fBrescan_uuid_tree\fR +.RS 4 +(since: 3\&.12, default: off) +.sp +Force check and rebuild procedure of the UUID tree\&. This should not normally be needed\&. +.RE +.PP +\fBskip_balance\fR +.RS 4 +(since: 3\&.3, default: off) +.sp +Skip automatic resume of an interrupted balance operation\&. The operation can later be resumed with +\fBbtrfs balance resume\fR, or the paused state can be removed with +\fBbtrfs balance cancel\fR\&. The default behaviour is to resume an interrupted balance immediately after a volume is mounted\&. +.RE +.PP +\fBspace_cache\fR, \fBspace_cache=\fR\fB\fIversion\fR\fR, \fBnospace_cache\fR +.RS 4 +(\fInospace_cache\fR +since: 3\&.2, +\fIspace_cache=v1\fR +and +\fIspace_cache=v2\fR +since 4\&.5, default: +\fIspace_cache=v1\fR) +.sp +Options to control the free space cache\&. The free space cache greatly improves performance when reading block group free space into memory\&. However, managing the space cache consumes some resources, including a small amount of disk space\&. +.sp +There are two implementations of the free space cache\&. The original one, referred to as +\fIv1\fR, is the safe default\&. The +\fIv1\fR +space cache can be disabled at mount time with +\fInospace_cache\fR +without clearing\&. +.sp +On very large filesystems (many terabytes) and certain workloads, the performance of the +\fIv1\fR +space cache may degrade drastically\&. The +\fIv2\fR +implementation, which adds a new B\-tree called the free space tree, addresses this issue\&. Once enabled, the +\fIv2\fR +space cache will always be used and cannot be disabled unless it is cleared\&. Use +\fIclear_cache,space_cache=v1\fR +or +\fIclear_cache,nospace_cache\fR +to do so\&. If +\fIv2\fR +is enabled, kernels without +\fIv2\fR +support will only be able to mount the filesystem in read\-only mode\&. The +\fBbtrfs\fR(8) command currently only has read\-only support for +\fIv2\fR\&. A read\-write command may be run on a +\fIv2\fR +filesystem by clearing the cache, running the command, and then remounting with +\fIspace_cache=v2\fR\&. +.sp +If a version is not explicitly specified, the default implementation will be chosen, which is +\fIv1\fR\&. +.RE +.PP +\fBssd\fR, \fBssd_spread\fR, \fBnossd\fR, \fBnossd_spread\fR +.RS 4 +(default: SSD autodetected) +.sp +Options to control SSD allocation schemes\&. By default, BTRFS will enable or disable SSD optimizations depending on status of a device with respect to rotational or non\-rotational type\&. This is determined by the contents of +\fI/sys/block/DEV/queue/rotational\fR)\&. If it is 0, the +\fIssd\fR +option is turned on\&. The option +\fInossd\fR +will disable the autodetection\&. +.sp +The optimizations make use of the absence of the seek penalty that\(cqs inherent for the rotational devices\&. The blocks can be typically written faster and are not offloaded to separate threads\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +Since 4\&.14, the block layout optimizations have been dropped\&. This used to help with first generations of SSD devices\&. Their FTL (flash translation layer) was not effective and the optimization was supposed to improve the wear by better aligning blocks\&. This is no longer true with modern SSD devices and the optimization had no real benefit\&. Furthermore it caused increased fragmentation\&. The layout tuning has been kept intact for the option +\fIssd_spread\fR\&. +.sp .5v +.RE +The +\fIssd_spread\fR +mount option attempts to allocate into bigger and aligned chunks of unused space, and may perform better on low\-end SSDs\&. +\fIssd_spread\fR +implies +\fIssd\fR, enabling all other SSD heuristics as well\&. The option +\fInossd\fR +will disable all SSD options while +\fInossd_spread\fR +only disables +\fIssd_spread\fR\&. +.RE +.PP +\fBsubvol=\fR\fB\fIpath\fR\fR +.RS 4 +Mount subvolume from +\fIpath\fR +rather than the toplevel subvolume\&. The +\fIpath\fR +is always treated as relative to the toplevel subvolume\&. This mount option overrides the default subvolume set for the given filesystem\&. +.RE +.PP +\fBsubvolid=\fR\fB\fIsubvolid\fR\fR +.RS 4 +Mount subvolume specified by a +\fIsubvolid\fR +number rather than the toplevel subvolume\&. You can use +\fBbtrfs subvolume list\fR +of +\fBbtrfs subvolume show\fR +to see subvolume ID numbers\&. This mount option overrides the default subvolume set for the given filesystem\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +if both +\fIsubvolid\fR +and +\fIsubvol\fR +are specified, they must point at the same subvolume, otherwise the mount will fail\&. +.sp .5v +.RE +.RE +.PP +\fBthread_pool=\fR\fB\fInumber\fR\fR +.RS 4 +(default: min(NRCPUS + 2, 8) ) +.sp +The number of worker threads to start\&. NRCPUS is number of on\-line CPUs detected at the time of mount\&. Small number leads to less parallelism in processing data and metadata, higher numbers could lead to a performance hit due to increased locking contention, process scheduling, cache\-line bouncing or costly data transfers between local CPU memories\&. +.RE +.PP +\fBtreelog\fR, \fBnotreelog\fR +.RS 4 +(default: on) +.sp +Enable the tree logging used for +\fIfsync\fR +and +\fIO_SYNC\fR +writes\&. The tree log stores changes without the need of a full filesystem sync\&. The log operations are flushed at sync and transaction commit\&. If the system crashes between two such syncs, the pending tree log operations are replayed during mount\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +currently, the tree log is replayed even with a read\-only mount! To disable that behaviour, also mount with +\fInologreplay\fR\&. +.sp .5v +.RE +The tree log could contain new files/directories, these would not exist on a mounted filesystem if the log is not replayed\&. +.RE +.PP +\fBusebackuproot\fR, \fBnousebackuproot\fR +.RS 4 +(since: 4\&.6, default: off) +.sp +Enable autorecovery attempts if a bad tree root is found at mount time\&. Currently this scans a backup list of several previous tree roots and tries to use the first readable\&. This can be used with read\-only mounts as well\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +This option has replaced +\fIrecovery\fR\&. +.sp .5v +.RE +.RE +.PP +\fBuser_subvol_rm_allowed\fR +.RS 4 +(default: off) +.sp +Allow subvolumes to be deleted by their respective owner\&. Otherwise, only the root user can do that\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +historically, any user could create a snapshot even if he was not owner of the source subvolume, the subvolume deletion has been restricted for that reason\&. The subvolume creation has been restricted but this mount option is still required\&. This is a usability issue\&. Since 4\&.18, the +\fBrmdir\fR(2) syscall can delete an empty subvolume just like an ordinary directory\&. Whether this is possible can be detected at runtime, see +\fIrmdir_subvol\fR +feature in +\fIFILESYSTEM FEATURES\fR\&. +.sp .5v +.RE +.RE +.SS "DEPRECATED MOUNT OPTIONS" +.sp +List of mount options that have been removed, kept for backward compatibility\&. +.PP +\fBalloc_start=\fR\fB\fIbytes\fR\fR +.RS 4 +(default: 1M, minimum: 1M, deprecated since: 4\&.13) +.sp +Debugging option to force all block allocations above a certain byte threshold on each block device\&. The value is specified in bytes, optionally with a K, M, or G suffix (case insensitive)\&. +.RE +.PP +\fBrecovery\fR +.RS 4 +(since: 3\&.2, default: off, deprecated since: 4\&.5) +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +this option has been replaced by +\fIusebackuproot\fR +and should not be used but will work on 4\&.5+ kernels\&. +.sp .5v +.RE +.RE +.PP +\fBsubvolrootid=\fR\fB\fIobjectid\fR\fR +.RS 4 +(irrelevant since: 3\&.2, formally deprecated since: 3\&.10) +.sp +A workaround option from times (pre 3\&.2) when it was not possible to mount a subvolume that did not reside directly under the toplevel subvolume\&. +.RE +.SS "NOTES ON GENERIC MOUNT OPTIONS" +.sp +Some of the general mount options from \fBmount\fR(8) that affect BTRFS and are worth mentioning\&. +.PP +\fBnoatime\fR +.RS 4 +under read intensive work\-loads, specifying +\fInoatime\fR +significantly improves performance because no new access time information needs to be written\&. Without this option, the default is +\fIrelatime\fR, which only reduces the number of inode atime updates in comparison to the traditional +\fIstrictatime\fR\&. The worst case for atime updates under +\fIrelatime\fR +occurs when many files are read whose atime is older than 24 h and which are freshly snapshotted\&. In that case the atime is updated +\fIand\fR +COW happens \- for each file \- in bulk\&. See also +\m[blue]\fBhttps://lwn\&.net/Articles/499293/\fR\m[] +\- +\fIAtime and btrfs: a bad combination? (LWN, 2012\-05\-31)\fR\&. +.sp +Note that +\fInoatime\fR +may break applications that rely on atime uptimes like the venerable Mutt (unless you use maildir mailboxes)\&. +.RE +.SH "FILESYSTEM FEATURES" +.sp +The basic set of filesystem features gets extended over time\&. The backward compatibility is maintained and the features are optional, need to be explicitly asked for so accidental use will not create incompatibilities\&. +.sp +There are several classes and the respective tools to manage the features: +.PP +at mkfs time only +.RS 4 +This is namely for core structures, like the b\-tree nodesize, see +\fBmkfs\&.btrfs\fR(8) for more details\&. +.RE +.PP +after mkfs, on an unmounted filesystem +.RS 4 +Features that may optimize internal structures or add new structures to support new functionality, see +\fBbtrfstune\fR(8)\&. The command +\fBbtrfs inspect\-internal dump\-super device\fR +will dump a superblock, you can map the value of +\fIincompat_flags\fR +to the features listed below +.RE +.PP +after mkfs, on a mounted filesystem +.RS 4 +The features of a filesystem (with a given UUID) are listed in +\fB/sys/fs/btrfs/UUID/features/\fR, one file per feature\&. The status is stored inside the file\&. The value +\fI1\fR +is for enabled and active, while +\fI0\fR +means the feature was enabled at mount time but turned off afterwards\&. +.sp +Whether a particular feature can be turned on a mounted filesystem can be found in the directory +\fB/sys/fs/btrfs/features/\fR, one file per feature\&. The value +\fI1\fR +means the feature can be enabled\&. +.RE +.sp +List of features (see also \fBmkfs\&.btrfs\fR(8) section \fIFILESYSTEM FEATURES\fR): +.PP +\fBbig_metadata\fR +.RS 4 +(since: 3\&.4) +.sp +the filesystem uses +\fInodesize\fR +for metadata blocks, this can be bigger than the page size +.RE +.PP +\fBcompress_lzo\fR +.RS 4 +(since: 2\&.6\&.38) +.sp +the +\fIlzo\fR +compression has been used on the filesystem, either as a mount option or via +\fBbtrfs filesystem defrag\fR\&. +.RE +.PP +\fBcompress_zstd\fR +.RS 4 +(since: 4\&.14) +.sp +the +\fIzstd\fR +compression has been used on the filesystem, either as a mount option or via +\fBbtrfs filesystem defrag\fR\&. +.RE +.PP +\fBdefault_subvol\fR +.RS 4 +(since: 2\&.6\&.34) +.sp +the default subvolume has been set on the filesystem +.RE +.PP +\fBextended_iref\fR +.RS 4 +(since: 3\&.7) +.sp +increased hardlink limit per file in a directory to 65536, older kernels supported a varying number of hardlinks depending on the sum of all file name sizes that can be stored into one metadata block +.RE +.PP +\fBmixed_backref\fR +.RS 4 +(since: 2\&.6\&.31) +.sp +the last major disk format change, improved backreferences, now default +.RE +.PP +\fBmixed_groups\fR +.RS 4 +(since: 2\&.6\&.37) +.sp +mixed data and metadata block groups, ie\&. the data and metadata are not separated and occupy the same block groups, this mode is suitable for small volumes as there are no constraints how the remaining space should be used (compared to the split mode, where empty metadata space cannot be used for data and vice versa) +.sp +on the other hand, the final layout is quite unpredictable and possibly highly fragmented, which means worse performance +.RE +.PP +\fBno_holes\fR +.RS 4 +(since: 3\&.14) +.sp +improved representation of file extents where holes are not explicitly stored as an extent, saves a few percent of metadata if sparse files are used +.RE +.PP +\fBraid56\fR +.RS 4 +(since: 3\&.9) +.sp +the filesystem contains or contained a raid56 profile of block groups +.RE +.PP +\fBrmdir_subvol\fR +.RS 4 +(since: 4\&.18) +.sp +indicate that +\fBrmdir\fR(2) syscall can delete an empty subvolume just like an ordinary directory\&. Note that this feature only depends on the kernel version\&. +.RE +.PP +\fBskinny_metadata\fR +.RS 4 +(since: 3\&.10) +.sp +reduced\-size metadata for extent references, saves a few percent of metadata +.RE +.SH "FILESYSTEM LIMITS" +.PP +maximum file name length +.RS 4 +255 +.RE +.PP +maximum symlink target length +.RS 4 +depends on the +\fInodesize\fR +value, for 4k it\(cqs 3949 bytes, for larger nodesize it\(cqs 4095 +.sp +The symlink target may not be a valid path, ie the path name components can exceed the limits, there\(cqs no content validation at +\fBsymlink\fR(3) creation\&. +.RE +.PP +maximum number of inodes +.RS 4 +2^64 but depends on the available metadata space as the inodes are created dynamically +.RE +.PP +inode numbers +.RS 4 +minimum number: 256 (for subvolumes), regular files and directories: 257 +.RE +.PP +maximum file length +.RS 4 +inherent limit of btrfs is 2^64 (16 EiB) but the linux VFS limit is 2^63 (8 EiB) +.RE +.PP +maximum number of subvolumes +.RS 4 +2^64 but depends on the available metadata space, the space consumed by all subvolume metadata includes bookkeeping of the shared extents can be large (MiB, GiB) +.RE +.PP +maximum number of hardlinks of a file in a directory +.RS 4 +65536 when the +\fBextref\fR +feature is turned on during mkfs (default), roughly 100 otherwise +.RE +.SH "FILE ATTRIBUTES" +.sp +The btrfs filesystem supports setting the following file attributes using the \fBchattr\fR(1) utility: +.PP +\fBa\fR +.RS 4 +\fIappend only\fR, new writes are always written at the end of the file +.RE +.PP +\fBA\fR +.RS 4 +\fIno atime updates\fR +.RE +.PP +\fBc\fR +.RS 4 +\fIcompress data\fR, all data written after this attribute is set will be compressed\&. Please note that compression is also affected by the mount options or the parent directory attributes\&. +.sp +When set on a directory, all newly created files will inherit this attribute\&. +.RE +.PP +\fBC\fR +.RS 4 +\fIno copy\-on\-write\fR, file modifications are done in\-place +.sp +When set on a directory, all newly created files will inherit this attribute\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +due to implementation limitations, this flag can be set/unset only on empty files\&. +.sp .5v +.RE +.RE +.PP +\fBd\fR +.RS 4 +\fIno dump\fR, makes sense with 3rd party tools like +\fBdump\fR(8), on BTRFS the attribute can be set/unset but no other special handling is done +.RE +.PP +\fBD\fR +.RS 4 +\fIsynchronous directory updates\fR, for more details search +\fBopen\fR(2) for +\fIO_SYNC\fR +and +\fIO_DSYNC\fR +.RE +.PP +\fBi\fR +.RS 4 +\fIimmutable\fR, no file data and metadata changes allowed even to the root user as long as this attribute is set (obviously the exception is unsetting the attribute) +.RE +.PP +\fBS\fR +.RS 4 +\fIsynchronous updates\fR, for more details search +\fBopen\fR(2) for +\fIO_SYNC\fR +and +\fIO_DSYNC\fR +.RE +.PP +\fBX\fR +.RS 4 +\fIno compression\fR, permanently turn off compression on the given file\&. Any compression mount options will not affect this file\&. +.sp +When set on a directory, all newly created files will inherit this attribute\&. +.RE +.sp +No other attributes are supported\&. For the complete list please refer to the \fBchattr\fR(1) manual page\&. +.SH "CONTROL DEVICE" +.sp +There\(cqs a character special device \fB/dev/btrfs\-control\fR with major and minor numbers 10 and 234 (the device can be found under the \fImisc\fR category)\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +$ ls \-l /dev/btrfs\-control +crw\-\-\-\-\-\-\- 1 root root 10, 234 Jan 1 12:00 /dev/btrfs\-control +.fi +.if n \{\ +.RE +.\} +.sp +The device accepts some ioctl calls that can perform following actions on the filesystem module: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +scan devices for btrfs filesystem (ie\&. to let multi\-device filesystems mount automatically) and register them with the kernel module +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +similar to scan, but also wait until the device scanning process is finished for a given filesystem +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +get the supported features (can be also found under +\fI/sys/fs/btrfs/features\fR) +.RE +.sp +The device is usually created by a system device node manager (eg\&. udev), but can be created manually: +.sp +.if n \{\ +.RS 4 +.\} +.nf +# mknod \-\-mode=600 c 10 234 /dev/btrfs\-control +.fi +.if n \{\ +.RE +.\} +.sp +The control device is not strictly required but the device scanning will not work and a workaround would need to be used to mount a multi\-device filesystem\&. The mount option \fIdevice\fR can trigger the device scanning during mount\&. +.SH "SEE ALSO" +.sp +\fBacl\fR(5), \fBbtrfs\fR(8), \fBchattr\fR(1), \fBfstrim\fR(8), \fBioctl\fR(2), \fBmkfs\&.btrfs\fR(8), \fBmount\fR(8) diff --git a/Documentation/btrfs.8 b/Documentation/btrfs.8 new file mode 100644 index 00000000..3fc6b0e2 --- /dev/null +++ b/Documentation/btrfs.8 @@ -0,0 +1,226 @@ +'\" t +.\" Title: btrfs +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFS" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfs \- a toolbox to manage btrfs filesystems +.SH "SYNOPSIS" +.sp +\fBbtrfs\fR \fI<command>\fR [\fI<args>\fR] +.SH "DESCRIPTION" +.sp +The \fBbtrfs\fR utility is a toolbox for managing btrfs filesystems\&. There are command groups to work with subvolumes, devices, for whole filesystem or other specific actions\&. See section \fBCOMMANDS\fR\&. +.sp +There are also standalone tools for some tasks like \fBbtrfs\-convert\fR or \fBbtrfstune\fR that were separate historically and/or haven\(cqt been merged to the main utility\&. See section \fISTANDALONE TOOLS\fR for more details\&. +.sp +For other topics (mount options, etc) please refer to the separate manual page \fBbtrfs\fR(5)\&. +.SH "COMMAND SYNTAX" +.sp +Any command name can be shortened so long as the shortened form is unambiguous, however, it is recommended to use full command names in scripts\&. All command groups have their manual page named \fBbtrfs\-\fR\fB\fI<group>\fR\fR\&. +.sp +For example: it is possible to run \fBbtrfs sub snaps\fR instead of \fBbtrfs subvolume snapshot\fR\&. But \fBbtrfs file s\fR is not allowed, because \fBfile s\fR may be interpreted both as \fBfilesystem show\fR and as \fBfilesystem sync\fR\&. +.sp +If the command name is ambiguous, the list of conflicting options is printed\&. +.sp +For an overview of a given command use \fIbtrfs command \-\-help\fR or \fIbtrfs [command\&...] \-\-help \-\-full\fR to print all available options\&. +.SH "COMMANDS" +.PP +\fBbalance\fR +.RS 4 +Balance btrfs filesystem chunks across single or several devices\&. + +See +\fBbtrfs\-balance\fR(8) for details\&. +.RE +.PP +\fBcheck\fR +.RS 4 +Do off\-line check on a btrfs filesystem\&. + +See +\fBbtrfs\-check\fR(8) for details\&. +.RE +.PP +\fBdevice\fR +.RS 4 +Manage devices managed by btrfs, including add/delete/scan and so on\&. + +See +\fBbtrfs\-device\fR(8) for details\&. +.RE +.PP +\fBfilesystem\fR +.RS 4 +Manage a btrfs filesystem, including label setting/sync and so on\&. + +See +\fBbtrfs\-filesystem\fR(8) for details\&. +.RE +.PP +\fBinspect\-internal\fR +.RS 4 +Debug tools for developers/hackers\&. + +See +\fBbtrfs\-inspect\-internal\fR(8) for details\&. +.RE +.PP +\fBproperty\fR +.RS 4 +Get/set a property from/to a btrfs object\&. + +See +\fBbtrfs\-property\fR(8) for details\&. +.RE +.PP +\fBqgroup\fR +.RS 4 +Manage quota group(qgroup) for btrfs filesystem\&. + +See +\fBbtrfs\-qgroup\fR(8) for details\&. +.RE +.PP +\fBquota\fR +.RS 4 +Manage quota on btrfs filesystem like enabling/rescan and etc\&. + +See +\fBbtrfs\-quota\fR(8) and +\fBbtrfs\-qgroup\fR(8) for details\&. +.RE +.PP +\fBreceive\fR +.RS 4 +Receive subvolume data from stdin/file for restore and etc\&. + +See +\fBbtrfs\-receive\fR(8) for details\&. +.RE +.PP +\fBreplace\fR +.RS 4 +Replace btrfs devices\&. + +See +\fBbtrfs\-replace\fR(8) for details\&. +.RE +.PP +\fBrescue\fR +.RS 4 +Try to rescue damaged btrfs filesystem\&. + +See +\fBbtrfs\-rescue\fR(8) for details\&. +.RE +.PP +\fBrestore\fR +.RS 4 +Try to restore files from a damaged btrfs filesystem\&. + +See +\fBbtrfs\-restore\fR(8) for details\&. +.RE +.PP +\fBscrub\fR +.RS 4 +Scrub a btrfs filesystem\&. + +See +\fBbtrfs\-scrub\fR(8) for details\&. +.RE +.PP +\fBsend\fR +.RS 4 +Send subvolume data to stdout/file for backup and etc\&. + +See +\fBbtrfs\-send\fR(8) for details\&. +.RE +.PP +\fBsubvolume\fR +.RS 4 +Create/delete/list/manage btrfs subvolume\&. + +See +\fBbtrfs\-subvolume\fR(8) for details\&. +.RE +.SH "STANDALONE TOOLS" +.sp +New functionality could be provided using a standalone tool\&. If the functionality proves to be useful, then the standalone tool is declared obsolete and its functionality is copied to the main tool\&. Obsolete tools are removed after a long (years) depreciation period\&. +.sp +Tools that are still in active use without an equivalent in \fBbtrfs\fR: +.PP +\fBbtrfs\-convert\fR +.RS 4 +in\-place conversion from ext2/3/4 filesystems to btrfs +.RE +.PP +\fBbtrfstune\fR +.RS 4 +tweak some filesystem properties on a unmounted filesystem +.RE +.PP +\fBbtrfs\-select\-super\fR +.RS 4 +rescue tool to overwrite primary superblock from a spare copy +.RE +.PP +\fBbtrfs\-find\-root\fR +.RS 4 +rescue helper to find tree roots in a filesystem +.RE +.sp +Deprecated and obsolete tools: +.PP +\fBbtrfs\-debug\-tree\fR +.RS 4 +moved to +\fBbtrfs inspect\-internal dump\-tree\fR\&. Removed from source distribution\&. +.RE +.PP +\fBbtrfs\-show\-super\fR +.RS 4 +moved to +\fBbtrfs inspect\-internal dump\-super\fR, standalone removed\&. +.RE +.PP +\fBbtrfs\-zero\-log\fR +.RS 4 +moved to +\fBbtrfs rescue zero\-log\fR, standalone removed\&. +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfs\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&. +.SH "AVAILABILITY" +.sp +\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBbtrfs\-balance\fR(8), \fBbtrfs\-check\fR(8), \fBbtrfs\-convert\fR(8), \fBbtrfs\-device\fR(8), \fBbtrfs\-filesystem\fR(8), \fBbtrfs\-inspect\-internal\fR(8), \fBbtrfs\-property\fR(8), \fBbtrfs\-qgroup\fR(8), \fBbtrfs\-quota\fR(8), \fBbtrfs\-receive\fR(8), \fBbtrfs\-replace\fR(8), \fBbtrfs\-rescue\fR(8), \fBbtrfs\-restore\fR(8), \fBbtrfs\-scrub\fR(8), \fBbtrfs\-send\fR(8), \fBbtrfs\-subvolume\fR(8), \fBbtrfstune\fR(8), \fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/btrfstune.8 b/Documentation/btrfstune.8 new file mode 100644 index 00000000..b83d9e9d --- /dev/null +++ b/Documentation/btrfstune.8 @@ -0,0 +1,142 @@ +'\" t +.\" Title: btrfstune +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "BTRFSTUNE" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +btrfstune \- tune various filesystem parameters +.SH "SYNOPSIS" +.sp +\fBbtrfstune\fR [options] \fI<device>\fR [\fI<device>\fR\&...] +.SH "DESCRIPTION" +.sp +\fBbtrfstune\fR can be used to enable, disable, or set various filesystem parameters\&. The filesystem must be unmounted\&. +.sp +The common usecase is to enable features that were not enabled at mkfs time\&. Please make sure that you have kernel support for the features\&. You can find a complete list of features and kernel version of their introduction at \m[blue]\fBhttps://btrfs\&.wiki\&.kernel\&.org/index\&.php/Changelog#By_feature\fR\m[] \&. Also, the manual page \fBmkfs\&.btrfs\fR(8) contains more details about the features\&. +.sp +Some of the features could be also enabled on a mounted filesystem by other means\&. Please refer to the \fIFILESYSTEM FEATURES\fR in \fBbtrfs\fR(5)\&. +.SH "OPTIONS" +.PP +\-S \fI<0|1>\fR +.RS 4 +Enable seeding on a given device\&. Value 1 will enable seeding, 0 will disable it\&. + +A seeding filesystem is forced to be mounted read\-only\&. A new device can be added to the filesystem and will capture all writes keeping the seeding device intact\&. +.RE +.PP +\-r +.RS 4 +(since kernel: 3\&.7) +.sp +Enable extended inode refs (hardlink limit per file in a directory is 65536), enabled by mkfs feature +\fIextref\fR\&. +.RE +.PP +\-x +.RS 4 +(since kernel: 3\&.10) +.sp +Enable skinny metadata extent refs (more efficient representation of extents), enabled by mkfs feature +\fIskinny\-metadata\fR\&. +.sp +All newly created extents will use the new representation\&. To completely switch the entire filesystem, run a full balance of the metadata\&. Please refer to +\fBbtrfs\-balance\fR(8)\&. +.RE +.PP +\-n +.RS 4 +(since kernel: 3\&.14) +.sp +Enable no\-holes feature (more efficient representation of file holes), enabled by mkfs feature +\fIno\-holes\fR\&. +.RE +.PP +\-f +.RS 4 +Allow dangerous changes, e\&.g\&. clear the seeding flag or change fsid\&. Make sure that you are aware of the dangers\&. +.RE +.PP +\-u +.RS 4 +Change fsid to a randomly generated UUID or continue previous fsid change operation in case it was interrupted\&. +.RE +.PP +\-U \fI<UUID>\fR +.RS 4 +Change fsid to +\fIUUID\fR\&. +.sp +The +\fIUUID\fR +should be a 36 bytes string in +\fBprintf\fR(3) format +\fI"%08x\-%04x\-%04x\-%04x\-%012x"\fR\&. If there is a previous unfinished fsid change, it will continue only if the +\fIUUID\fR +matches the unfinished one or if you use the option +\fI\-u\fR\&. +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +Cancelling or interrupting a UUID change operation will make the filesystem temporarily unmountable\&. To fix it, rerun \fIbtrfstune \-u\fR to restore the UUID and let it complete\&. +.sp .5v +.RE +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +Clearing the seeding flag on a device may be dangerous\&. If a previously\-seeding device is changed, all filesystems that used that device will become unmountable\&. Setting the seeding flag back will not fix that\&. A valid usecase is \fIseeding device as a base image\fR\&. Clear the seeding flag, update the filesystem and make it seeding again, provided that it\(cqs OK to throw away all filesystems built on top of the previous base\&. +.sp .5v +.RE +.SH "EXIT STATUS" +.sp +\fBbtrfstune\fR returns 0 if no error happened, 1 otherwise\&. +.SH "COMPATIBILITY NOTE" +.sp +This deprecated tool exists for historical reasons but is still in use today\&. Its functionality will be merged to the main tool, at which time \fBbtrfstune\fR will be declared obsolete and scheduled for removal\&. +.SH "SEE ALSO" +.sp +\fBbtrfs\fR(5), \fBbtrfs\-balance\fR(8), \fBmkfs\&.btrfs\fR(8) diff --git a/Documentation/fsck.btrfs.8 b/Documentation/fsck.btrfs.8 new file mode 100644 index 00000000..c5bbcc23 --- /dev/null +++ b/Documentation/fsck.btrfs.8 @@ -0,0 +1,63 @@ +'\" t +.\" Title: fsck.btrfs +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "FSCK\&.BTRFS" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +fsck.btrfs \- do nothing, successfully +.SH "SYNOPSIS" +.sp +\fBfsck\&.btrfs\fR [\-aApy] [\fI<device>\fR\&...] +.SH "DESCRIPTION" +.sp +\fBfsck\&.btrfs\fR is a type of utility that should exist for any filesystem and is called during system setup when the corresponding \fB/etc/fstab\fR entries contain non\-zero value for \fBfs_passno\fR, see \fBfstab\fR(5) for more\&. +.sp +Traditional filesystems need to run their respective fsck utility in case the filesystem was not unmounted cleanly and the log needs to be replayed before mount\&. This is not needed for BTRFS\&. You should set fs_passno to 0\&. +.sp +If you wish to check the consistency of a BTRFS filesystem or repair a damaged filesystem, see \fBbtrfs\-check\fR(8)\&. By default filesystem consistency is checked, the repair mode is enabled via the \fI\-\-repair\fR option (use with care!)\&. +.SH "OPTIONS" +.sp +The options are all the same and detect if \fBfsck\&.btrfs\fR is executed in non\-interactive mode and exits with success, otherwise prints a message about btrfs check\&. +.SH "EXIT STATUS" +.sp +There are two possible exit code returned: +.PP +0 +.RS 4 +No error +.RE +.PP +8 +.RS 4 +Operational error, eg\&. device does not exist +.RE +.SH "FILES" +.sp +\fB/etc/fstab\fR +.SH "SEE ALSO" +.sp +\fBbtrfs\fR(8), \fBfsck\fR(8), \fBfstab\fR(5), diff --git a/Documentation/mkfs.btrfs.8 b/Documentation/mkfs.btrfs.8 new file mode 100644 index 00000000..fbcd1203 --- /dev/null +++ b/Documentation/mkfs.btrfs.8 @@ -0,0 +1,626 @@ +'\" t +.\" Title: mkfs.btrfs +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 12/05/2018 +.\" Manual: Btrfs Manual +.\" Source: Btrfs v4.19.1 +.\" Language: English +.\" +.TH "MKFS\&.BTRFS" "8" "12/05/2018" "Btrfs v4\&.19\&.1" "Btrfs Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +mkfs.btrfs \- create a btrfs filesystem +.SH "SYNOPSIS" +.sp +\fBmkfs\&.btrfs\fR [options] \fI<device>\fR [\fI<device>\fR\&...] +.SH "DESCRIPTION" +.sp +\fBmkfs\&.btrfs\fR is used to create the btrfs filesystem on a single or multiple devices\&. \fI<device>\fR is typically a block device but can be a file\-backed image as well\&. Multiple devices are grouped by UUID of the filesystem\&. +.sp +Before mounting such filesystem, the kernel module must know all the devices either via preceding execution of \fBbtrfs device scan\fR or using the \fBdevice\fR mount option\&. See section \fBMULTIPLE DEVICES\fR for more details\&. +.SH "OPTIONS" +.PP +\fB\-b|\-\-byte\-count \fR\fB\fI<size>\fR\fR +.RS 4 +Specify the size of the filesystem\&. If this option is not used, then mkfs\&.btrfs uses the entire device space for the filesystem\&. +.RE +.PP +\fB\-d|\-\-data \fR\fB\fI<profile>\fR\fR +.RS 4 +Specify the profile for the data block groups\&. Valid values are +\fIraid0\fR, +\fIraid1\fR, +\fIraid5\fR, +\fIraid6\fR, +\fIraid10\fR +or +\fIsingle\fR +or dup (case does not matter)\&. +.sp +See +\fIDUP PROFILES ON A SINGLE DEVICE\fR +for more\&. +.RE +.PP +\fB\-m|\-\-metadata \fR\fB\fI<profile>\fR\fR +.RS 4 +Specify the profile for the metadata block groups\&. Valid values are +\fIraid0\fR, +\fIraid1\fR, +\fIraid5\fR, +\fIraid6\fR, +\fIraid10\fR, +\fIsingle\fR +or +\fIdup\fR, (case does not matter)\&. +.sp +A single device filesystem will default to +\fIDUP\fR, unless a SSD is detected\&. Then it will default to +\fIsingle\fR\&. The detection is based on the value of +\fB/sys/block/DEV/queue/rotational\fR, where +\fIDEV\fR +is the short name of the device\&. +.sp +Note that the rotational status can be arbitrarily set by the underlying block device driver and may not reflect the true status (network block device, memory\-backed SCSI devices etc)\&. Use the options +\fI\-\-data/\-\-metadata\fR +to avoid confusion\&. +.sp +See +\fIDUP PROFILES ON A SINGLE DEVICE\fR +for more details\&. +.RE +.PP +\fB\-M|\-\-mixed\fR +.RS 4 +Normally the data and metadata block groups are isolated\&. The +\fImixed\fR +mode will remove the isolation and store both types in the same block group type\&. This helps to utilize the free space regardless of the purpose and is suitable for small devices\&. The separate allocation of block groups leads to a situation where the space is reserved for the other block group type, is not available for allocation and can lead to ENOSPC state\&. +.sp +The recommended size for the mixed mode is for filesystems less than 1GiB\&. The soft recommendation is to use it for filesystems smaller than 5GiB\&. The mixed mode may lead to degraded performance on larger filesystems, but is otherwise usable, even on multiple devices\&. +.sp +The +\fInodesize\fR +and +\fIsectorsize\fR +must be equal, and the block group types must match\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +versions up to 4\&.2\&.x forced the mixed mode for devices smaller than 1GiB\&. This has been removed in 4\&.3+ as it caused some usability issues\&. +.sp .5v +.RE +.RE +.PP +\fB\-l|\-\-leafsize \fR\fB\fI<size>\fR\fR +.RS 4 +Alias for \-\-nodesize\&. Deprecated\&. +.RE +.PP +\fB\-n|\-\-nodesize \fR\fB\fI<size>\fR\fR +.RS 4 +Specify the nodesize, the tree block size in which btrfs stores metadata\&. The default value is 16KiB (16384) or the page size, whichever is bigger\&. Must be a multiple of the sectorsize and a power of 2, but not larger than 64KiB (65536)\&. Leafsize always equals nodesize and the options are aliases\&. +.sp +Smaller node size increases fragmentation but leads to taller b\-trees which in turn leads to lower locking contention\&. Higher node sizes give better packing and less fragmentation at the cost of more expensive memory operations while updating the metadata blocks\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +versions up to 3\&.11 set the nodesize to 4k\&. +.sp .5v +.RE +.RE +.PP +\fB\-s|\-\-sectorsize \fR\fB\fI<size>\fR\fR +.RS 4 +Specify the sectorsize, the minimum data block allocation unit\&. +.sp +The default value is the page size and is autodetected\&. If the sectorsize differs from the page size, the created filesystem may not be mountable by the kernel\&. Therefore it is not recommended to use this option unless you are going to mount it on a system with the appropriate page size\&. +.RE +.PP +\fB\-L|\-\-label \fR\fB\fI<string>\fR\fR +.RS 4 +Specify a label for the filesystem\&. The +\fIstring\fR +should be less than 256 bytes and must not contain newline characters\&. +.RE +.PP +\fB\-K|\-\-nodiscard\fR +.RS 4 +Do not perform whole device TRIM operation on devices that are capable of that\&. This does not affect discard/trim operation when the filesystem is mounted\&. Please see the mount option +\fIdiscard\fR +for that in +\fBbtrfs\fR(5)\&. +.RE +.PP +\fB\-r|\-\-rootdir \fR\fB\fI<rootdir>\fR\fR +.RS 4 +Populate the toplevel subvolume with files from +\fIrootdir\fR\&. This does not require root permissions to write the new files or to mount the filesystem\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +This option may enlarge the image or file to ensure it\(cqs big enough to contain the files from +\fIrootdir\fR\&. Since version 4\&.14\&.1 the filesystem size is not minimized\&. Please see option +\fI\-\-shrink\fR +if you need that functionality\&. +.sp .5v +.RE +.RE +.PP +\fB\-\-shrink\fR +.RS 4 +Shrink the filesystem to its minimal size, only works with +\fI\-\-rootdir\fR +option\&. +.sp +If the destination is a regular file, this option will also truncate the file to the minimal size\&. Otherwise it will reduce the filesystem available space\&. Extra space will not be usable unless the filesystem is mounted and resized using +\fIbtrfs filesystem resize\fR\&. +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +prior to version 4\&.14\&.1, the shrinking was done automatically\&. +.sp .5v +.RE +.RE +.PP +\fB\-O|\-\-features \fR\fB\fI<feature1>\fR\fR\fB[,\fR\fB\fI<feature2>\fR\fR\fB\&...]\fR +.RS 4 +A list of filesystem features turned on at mkfs time\&. Not all features are supported by old kernels\&. To disable a feature, prefix it with +\fI^\fR\&. +.sp +See section +\fBFILESYSTEM FEATURES\fR +for more details\&. To see all available features that mkfs\&.btrfs supports run: +.sp +\fBmkfs\&.btrfs \-O list\-all\fR +.RE +.PP +\fB\-f|\-\-force\fR +.RS 4 +Forcibly overwrite the block devices when an existing filesystem is detected\&. By default, mkfs\&.btrfs will utilize +\fIlibblkid\fR +to check for any known filesystem on the devices\&. Alternatively you can use the +\fBwipefs\fR +utility to clear the devices\&. +.RE +.PP +\fB\-q|\-\-quiet\fR +.RS 4 +Print only error or warning messages\&. Options \-\-features or \-\-help are unaffected\&. +.RE +.PP +\fB\-U|\-\-uuid \fR\fB\fI<UUID>\fR\fR +.RS 4 +Create the filesystem with the given +\fIUUID\fR\&. The UUID must not exist on any filesystem currently present\&. +.RE +.PP +\fB\-V|\-\-version\fR +.RS 4 +Print the +\fBmkfs\&.btrfs\fR +version and exit\&. +.RE +.PP +\fB\-\-help\fR +.RS 4 +Print help\&. +.RE +.PP +\fB\-A|\-\-alloc\-start \fR\fB\fI<offset>\fR\fR +.RS 4 +\fBdeprecated, will be removed\fR +(An option to help debugging chunk allocator\&.) Specify the (physical) offset from the start of the device at which allocations start\&. The default value is zero\&. +.RE +.SH "SIZE UNITS" +.sp +The default unit is \fIbyte\fR\&. All size parameters accept suffixes in the 1024 base\&. The recognized suffixes are: \fIk\fR, \fIm\fR, \fIg\fR, \fIt\fR, \fIp\fR, \fIe\fR, both uppercase and lowercase\&. +.SH "MULTIPLE DEVICES" +.sp +Before mounting a multiple device filesystem, the kernel module must know the association of the block devices that are attached to the filesystem UUID\&. +.sp +There is typically no action needed from the user\&. On a system that utilizes a udev\-like daemon, any new block device is automatically registered\&. The rules call \fBbtrfs device scan\fR\&. +.sp +The same command can be used to trigger the device scanning if the btrfs kernel module is reloaded (naturally all previous information about the device registration is lost)\&. +.sp +Another possibility is to use the mount options \fBdevice\fR to specify the list of devices to scan at the time of mount\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +# mount \-o device=/dev/sdb,device=/dev/sdc /dev/sda /mnt +.fi +.if n \{\ +.RE +.\} +.sp +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBNote\fR +.ps -1 +.br +.sp +that this means only scanning, if the devices do not exist in the system, mount will fail anyway\&. This can happen on systems without initramfs/initrd and root partition created with RAID1/10/5/6 profiles\&. The mount action can happen before all block devices are discovered\&. The waiting is usually done on the initramfs/initrd systems\&. +.sp .5v +.RE +.sp +As of kernel 4\&.14, RAID5/6 is still considered experimental and shouldn\(cqt be employed for production use\&. +.SH "FILESYSTEM FEATURES" +.sp +Features that can be enabled during creation time\&. See also \fBbtrfs\fR(5) section \fIFILESYSTEM FEATURES\fR\&. +.PP +\fBmixed\-bg\fR +.RS 4 +(kernel support since 2\&.6\&.37) +.sp +mixed data and metadata block groups, also set by option +\fI\-\-mixed\fR +.RE +.PP +\fBextref\fR +.RS 4 +(default since btrfs\-progs 3\&.12, kernel support since 3\&.7) +.sp +increased hardlink limit per file in a directory to 65536, older kernels supported a varying number of hardlinks depending on the sum of all file name sizes that can be stored into one metadata block +.RE +.PP +\fBraid56\fR +.RS 4 +(kernel support since 3\&.9) +.sp +extended format for RAID5/6, also enabled if raid5 or raid6 block groups are selected +.RE +.PP +\fBskinny\-metadata\fR +.RS 4 +(default since btrfs\-progs 3\&.18, kernel support since 3\&.10) +.sp +reduced\-size metadata for extent references, saves a few percent of metadata +.RE +.PP +\fBno\-holes\fR +.RS 4 +(kernel support since 3\&.14) +.sp +improved representation of file extents where holes are not explicitly stored as an extent, saves a few percent of metadata if sparse files are used +.RE +.SH "BLOCK GROUPS, CHUNKS, RAID" +.sp +The highlevel organizational units of a filesystem are block groups of three types: data, metadata and system\&. +.PP +\fBDATA\fR +.RS 4 +store data blocks and nothing else +.RE +.PP +\fBMETADATA\fR +.RS 4 +store internal metadata in b\-trees, can store file data if they fit into the inline limit +.RE +.PP +\fBSYSTEM\fR +.RS 4 +store structures that describe the mapping between the physical devices and the linear logical space representing the filesystem +.RE +.sp +Other terms commonly used: +.PP +\fBblock group\fR, \fBchunk\fR +.RS 4 +a logical range of space of a given profile, stores data, metadata or both; sometimes the terms are used interchangeably +.sp +A typical size of metadata block group is 256MiB (filesystem smaller than 50GiB) and 1GiB (larger than 50GiB), for data it\(cqs 1GiB\&. The system block group size is a few megabytes\&. +.RE +.PP +\fBRAID\fR +.RS 4 +a block group profile type that utilizes RAID\-like features on multiple devices: striping, mirroring, parity +.RE +.PP +\fBprofile\fR +.RS 4 +when used in connection with block groups refers to the allocation strategy and constraints, see the section +\fIPROFILES\fR +for more details +.RE +.SH "PROFILES" +.sp +There are the following block group types available: +.TS +allbox tab(:); +ct c s s ct +^ c c ct ^ +ct ct ct ct ct +ct ct ct ct ct +ct ct ct ct ct +ct ct ct ct ct +ct ct ct ct ct +ct ct ct ct ct +ct ct ct ct ct. +T{ +.sp +\fBProfile\fR +T}:T{ +.sp +\fBRedundancy\fR +T}:T{ +.sp +\fBMin/max devices\fR +T} +:T{ +.sp +\fBCopies\fR +T}:T{ +.sp +\fBParity\fR +T}:T{ +.sp +\fBStriping\fR +T}: +T{ +.sp +single +T}:T{ +.sp +1 +T}:T{ +.sp +T}:T{ +.sp +T}:T{ +.sp +1/any +T} +T{ +.sp +DUP +T}:T{ +.sp +2 / 1 device +T}:T{ +.sp +T}:T{ +.sp +T}:T{ +.sp +1/any ^(see note 1) +T} +T{ +.sp +RAID0 +T}:T{ +.sp +T}:T{ +.sp +T}:T{ +.sp +1 to N +T}:T{ +.sp +2/any +T} +T{ +.sp +RAID1 +T}:T{ +.sp +2 +T}:T{ +.sp +T}:T{ +.sp +T}:T{ +.sp +2/any +T} +T{ +.sp +RAID10 +T}:T{ +.sp +2 +T}:T{ +.sp +T}:T{ +.sp +1 to N +T}:T{ +.sp +4/any +T} +T{ +.sp +RAID5 +T}:T{ +.sp +1 +T}:T{ +.sp +1 +T}:T{ +.sp +2 to N \- 1 +T}:T{ +.sp +2/any ^(see note 2) +T} +T{ +.sp +RAID6 +T}:T{ +.sp +1 +T}:T{ +.sp +2 +T}:T{ +.sp +3 to N \- 2 +T}:T{ +.sp +3/any ^(see note 3) +T} +.TE +.sp 1 +.if n \{\ +.sp +.\} +.RS 4 +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.br +.ps +1 +\fBWarning\fR +.ps -1 +.br +.sp +It\(cqs not recommended to build btrfs with RAID0/1/10/5/6 profiles on partitions from the same device\&. Neither redundancy nor performance will be improved\&. +.sp .5v +.RE +.sp +\fINote 1:\fR DUP may exist on more than 1 device if it starts on a single device and another one is added\&. Since version 4\&.5\&.1, \fBmkfs\&.btrfs\fR will let you create DUP on multiple devices\&. +.sp +\fINote 2:\fR It\(cqs not recommended to use 2 devices with RAID5\&. In that case, parity stripe will contain the same data as the data stripe, making RAID5 degraded to RAID1 with more overhead\&. +.sp +\fINote 3:\fR It\(cqs also not recommended to use 3 devices with RAID6, unless you want to get effectively 3 copies in a RAID1\-like manner (but not exactly that)\&. N\-copies RAID1 is not implemented\&. +.SH "DUP PROFILES ON A SINGLE DEVICE" +.sp +The mkfs utility will let the user create a filesystem with profiles that write the logical blocks to 2 physical locations\&. Whether there are really 2 physical copies highly depends on the underlying device type\&. +.sp +For example, a SSD drive can remap the blocks internally to a single copy\(emthus deduplicating them\&. This negates the purpose of increased redundancy and just wastes filesystem space without providing the expected level of redundancy\&. +.sp +The duplicated data/metadata may still be useful to statistically improve the chances on a device that might perform some internal optimizations\&. The actual details are not usually disclosed by vendors\&. For example we could expect that not all blocks get deduplicated\&. This will provide a non\-zero probability of recovery compared to a zero chance if the single profile is used\&. The user should make the tradeoff decision\&. The deduplication in SSDs is thought to be widely available so the reason behind the mkfs default is to not give a false sense of redundancy\&. +.sp +As another example, the widely used USB flash or SD cards use a translation layer between the logical and physical view of the device\&. The data lifetime may be affected by frequent plugging\&. The memory cells could get damaged, hopefully not destroying both copies of particular data in case of DUP\&. +.sp +The wear levelling techniques can also lead to reduced redundancy, even if the device does not do any deduplication\&. The controllers may put data written in a short timespan into the same physical storage unit (cell, block etc)\&. In case this unit dies, both copies are lost\&. BTRFS does not add any artificial delay between metadata writes\&. +.sp +The traditional rotational hard drives usually fail at the sector level\&. +.sp +In any case, a device that starts to misbehave and repairs from the DUP copy should be replaced! \fBDUP is not backup\fR\&. +.SH "KNOWN ISSUES" +.sp +\fBSMALL FILESYSTEMS AND LARGE NODESIZE\fR +.sp +The combination of small filesystem size and large nodesize is not recommended in general and can lead to various ENOSPC\-related issues during mount time or runtime\&. +.sp +Since mixed block group creation is optional, we allow small filesystem instances with differing values for \fIsectorsize\fR and \fInodesize\fR to be created and could end up in the following situation: +.sp +.if n \{\ +.RS 4 +.\} +.nf +# mkfs\&.btrfs \-f \-n 65536 /dev/loop0 +btrfs\-progs v3\&.19\-rc2\-405\-g976307c +See http://btrfs\&.wiki\&.kernel\&.org for more information\&. +.fi +.if n \{\ +.RE +.\} +.sp +.if n \{\ +.RS 4 +.\} +.nf +Performing full device TRIM (512\&.00MiB) \&.\&.\&. +Label: (null) +UUID: 49fab72e\-0c8b\-466b\-a3ca\-d1bfe56475f0 +Node size: 65536 +Sector size: 4096 +Filesystem size: 512\&.00MiB +Block group profiles: + Data: single 8\&.00MiB + Metadata: DUP 40\&.00MiB + System: DUP 12\&.00MiB +SSD detected: no +Incompat features: extref, skinny\-metadata +Number of devices: 1 +Devices: + ID SIZE PATH + 1 512\&.00MiB /dev/loop0 +.fi +.if n \{\ +.RE +.\} +.sp +.if n \{\ +.RS 4 +.\} +.nf +# mount /dev/loop0 /mnt/ +mount: mount /dev/loop0 on /mnt failed: No space left on device +.fi +.if n \{\ +.RE +.\} +.sp +The ENOSPC occurs during the creation of the UUID tree\&. This is caused by large metadata blocks and space reservation strategy that allocates more than can fit into the filesystem\&. +.SH "AVAILABILITY" +.sp +\fBmkfs\&.btrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&. +.SH "SEE ALSO" +.sp +\fBbtrfs\fR(5), \fBbtrfs\fR(8), \fBwipefs\fR(8) diff --git a/config.h.in b/config.h.in new file mode 100644 index 00000000..df264eea --- /dev/null +++ b/config.h.in @@ -0,0 +1,135 @@ +/* config.h.in. Generated from configure.ac by autoheader. */ + +/* Define if building universal (internal helper macro) */ +#undef AC_APPLE_UNIVERSAL_BUILD + +/* disable backtrace stuff in kerncompat.h */ +#undef BTRFS_DISABLE_BACKTRACE + +/* Define to 1 if you have the `backtrace' function. */ +#undef HAVE_BACKTRACE + +/* Define to 1 if you have the `backtrace_symbols_fd' function. */ +#undef HAVE_BACKTRACE_SYMBOLS_FD + +/* Define to 1 if you have the <execinfo.h> header file. */ +#undef HAVE_EXECINFO_H + +/* Define to 1 if you have the <inttypes.h> header file. */ +#undef HAVE_INTTYPES_H + +/* Define to 1 if you have the <memory.h> header file. */ +#undef HAVE_MEMORY_H + +/* Define to 1 if you have the `openat' function. */ +#undef HAVE_OPENAT + +/* We did not define FIEMAP_EXTENT_SHARED */ +#undef HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE + +/* Define to 1 if you have the `reallocarray' function. */ +#undef HAVE_REALLOCARRAY + +/* Define to 1 if you have the <stdint.h> header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the <stdlib.h> header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the <strings.h> header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the <string.h> header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the <sys/stat.h> header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the <sys/types.h> header file. */ +#undef HAVE_SYS_TYPES_H + +/* Define to 1 if you have the <unistd.h> header file. */ +#undef HAVE_UNISTD_H + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* URL */ +#undef PACKAGE_URL + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* Enable extensions on AIX 3, Interix. */ +#ifndef _ALL_SOURCE +# undef _ALL_SOURCE +#endif +/* Enable GNU extensions on systems that have them. */ +#ifndef _GNU_SOURCE +# undef _GNU_SOURCE +#endif +/* Enable threading extensions on Solaris. */ +#ifndef _POSIX_PTHREAD_SEMANTICS +# undef _POSIX_PTHREAD_SEMANTICS +#endif +/* Enable extensions on HP NonStop. */ +#ifndef _TANDEM_SOURCE +# undef _TANDEM_SOURCE +#endif +/* Enable general extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# undef __EXTENSIONS__ +#endif + + +/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most + significant byte first (like Motorola and SPARC, unlike Intel). */ +#if defined AC_APPLE_UNIVERSAL_BUILD +# if defined __BIG_ENDIAN__ +# define WORDS_BIGENDIAN 1 +# endif +#else +# ifndef WORDS_BIGENDIAN +# undef WORDS_BIGENDIAN +# endif +#endif + +/* Enable large inode numbers on Mac OS X 10.5. */ +#ifndef _DARWIN_USE_64_BIT_INODE +# define _DARWIN_USE_64_BIT_INODE 1 +#endif + +/* Number of bits in a file offset, on hosts where this is settable. */ +#undef _FILE_OFFSET_BITS + +/* Define for large files, on AIX-style hosts. */ +#undef _LARGE_FILES + +/* Define to 1 if on MINIX. */ +#undef _MINIX + +/* Define to 2 if the system does not provide POSIX.1 features except with + this defined. */ +#undef _POSIX_1_SOURCE + +/* Define to 1 if you need to in order for `stat' and other things to work. */ +#undef _POSIX_SOURCE + +/* Define to empty if `const' does not conform to ANSI C. */ +#undef const + +/* Define to empty if the keyword `volatile' does not work. Warning: valid + code using `volatile' can become incorrect without. Disable with care. */ +#undef volatile diff --git a/config/config.guess b/config/config.guess new file mode 100755 index 00000000..33c33bf5 --- /dev/null +++ b/config/config.guess @@ -0,0 +1,1486 @@ +#! /bin/sh +# Attempt to guess a canonical system name. +# Copyright 1992-2018 Free Software Foundation, Inc. + +timestamp='2018-03-08' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see <https://www.gnu.org/licenses/>. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that +# program. This Exception is an additional permission under section 7 +# of the GNU General Public License, version 3 ("GPLv3"). +# +# Originally written by Per Bothner; maintained since 2000 by Ben Elliston. +# +# You can get the latest version of this script from: +# https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess +# +# Please send patches to <config-patches@gnu.org>. + + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] + +Output the configuration name of the system \`$me' is run on. + +Options: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to <config-patches@gnu.org>." + +version="\ +GNU config.guess ($timestamp) + +Originally written by Per Bothner. +Copyright 1992-2018 Free Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" >&2 + exit 1 ;; + * ) + break ;; + esac +done + +if test $# != 0; then + echo "$me: too many arguments$help" >&2 + exit 1 +fi + +trap 'exit 1' 1 2 15 + +# CC_FOR_BUILD -- compiler used by this script. Note that the use of a +# compiler to aid in system detection is discouraged as it requires +# temporary files to be created and, as you can see below, it is a +# headache to deal with in a portable fashion. + +# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still +# use `HOST_CC' if defined, but it is deprecated. + +# Portable tmp directory creation inspired by the Autoconf team. + +set_cc_for_build=' +trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ; +trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ; +: ${TMPDIR=/tmp} ; + { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } || + { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } || + { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } || + { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ; +dummy=$tmp/dummy ; +tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ; +case $CC_FOR_BUILD,$HOST_CC,$CC in + ,,) echo "int x;" > "$dummy.c" ; + for c in cc gcc c89 c99 ; do + if ($c -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then + CC_FOR_BUILD="$c"; break ; + fi ; + done ; + if test x"$CC_FOR_BUILD" = x ; then + CC_FOR_BUILD=no_compiler_found ; + fi + ;; + ,,*) CC_FOR_BUILD=$CC ;; + ,*,*) CC_FOR_BUILD=$HOST_CC ;; +esac ; set_cc_for_build= ;' + +# This is needed to find uname on a Pyramid OSx when run in the BSD universe. +# (ghazi@noc.rutgers.edu 1994-08-24) +if (test -f /.attbin/uname) >/dev/null 2>&1 ; then + PATH=$PATH:/.attbin ; export PATH +fi + +UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown +UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown +UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown +UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown + +case "$UNAME_SYSTEM" in +Linux|GNU|GNU/*) + # If the system lacks a compiler, then just pick glibc. + # We could probably try harder. + LIBC=gnu + + eval "$set_cc_for_build" + cat <<-EOF > "$dummy.c" + #include <features.h> + #if defined(__UCLIBC__) + LIBC=uclibc + #elif defined(__dietlibc__) + LIBC=dietlibc + #else + LIBC=gnu + #endif + EOF + eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`" + + # If ldd exists, use it to detect musl libc. + if command -v ldd >/dev/null && \ + ldd --version 2>&1 | grep -q ^musl + then + LIBC=musl + fi + ;; +esac + +case "${UNAME_MACHINE}" in + i?86) + test -z "$VENDOR" && VENDOR=pc + ;; + *) + test -z "$VENDOR" && VENDOR=unknown + ;; +esac +test -f /etc/SuSE-release -o -f /.buildenv && VENDOR=suse + +# Note: order is significant - the case branches are not exclusive. + +case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in + *:NetBSD:*:*) + # NetBSD (nbsd) targets should (where applicable) match one or + # more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*, + # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently + # switched to ELF, *-*-netbsd* would select the old + # object file format. This provides both forward + # compatibility and a consistent mechanism for selecting the + # object file format. + # + # Note: NetBSD doesn't particularly care about the vendor + # portion of the name. We always set it to "unknown". + sysctl="sysctl -n hw.machine_arch" + UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \ + "/sbin/$sysctl" 2>/dev/null || \ + "/usr/sbin/$sysctl" 2>/dev/null || \ + echo unknown)` + case "$UNAME_MACHINE_ARCH" in + armeb) machine=armeb-unknown ;; + arm*) machine=arm-unknown ;; + sh3el) machine=shl-unknown ;; + sh3eb) machine=sh-unknown ;; + sh5el) machine=sh5le-unknown ;; + earmv*) + arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,'` + endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p'` + machine="${arch}${endian}"-${VENDOR}-unknown + ;; + *) machine="$UNAME_MACHINE_ARCH"-${VENDOR}-unknown ;; + esac + # The Operating System including object format, if it has switched + # to ELF recently (or will in the future) and ABI. + case "$UNAME_MACHINE_ARCH" in + earm*) + os=netbsdelf + ;; + arm*|i386|m68k|ns32k|sh3*|sparc|vax) + eval "$set_cc_for_build" + if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ELF__ + then + # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout). + # Return netbsd for either. FIX? + os=netbsd + else + os=netbsdelf + fi + ;; + *) + os=netbsd + ;; + esac + # Determine ABI tags. + case "$UNAME_MACHINE_ARCH" in + earm*) + expr='s/^earmv[0-9]/-eabi/;s/eb$//' + abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"` + ;; + esac + # The OS release + # Debian GNU/NetBSD machines have a different userland, and + # thus, need a distinct triplet. However, they do not need + # kernel version information, so it can be replaced with a + # suitable tag, in the style of linux-gnu. + case "$UNAME_VERSION" in + Debian*) + release='-gnu' + ;; + *) + release=`echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2` + ;; + esac + # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM: + # contains redundant information, the shorter form: + # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used. + echo "$machine-${os}${release}${abi}" + exit ;; + *:Bitrig:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'` + echo "$UNAME_MACHINE_ARCH"-${VENDOR}-bitrig"$UNAME_RELEASE" + exit ;; + *:OpenBSD:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'` + echo "$UNAME_MACHINE_ARCH"-${VENDOR}-openbsd"$UNAME_RELEASE" + exit ;; + *:LibertyBSD:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'` + echo "$UNAME_MACHINE_ARCH"-${VENDOR}-libertybsd"$UNAME_RELEASE" + exit ;; + *:MidnightBSD:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-midnightbsd"$UNAME_RELEASE" + exit ;; + *:ekkoBSD:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-ekkobsd"$UNAME_RELEASE" + exit ;; + *:SolidBSD:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-solidbsd"$UNAME_RELEASE" + exit ;; + macppc:MirBSD:*:*) + echo powerpc-${VENDOR}-mirbsd"$UNAME_RELEASE" + exit ;; + *:MirBSD:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-mirbsd"$UNAME_RELEASE" + exit ;; + *:Sortix:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-sortix + exit ;; + *:Redox:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-redox + exit ;; + mips:OSF1:*.*) + echo mips-dec-osf1 + exit ;; + alpha:OSF1:*:*) + case $UNAME_RELEASE in + *4.0) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'` + ;; + *5.*) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'` + ;; + esac + # According to Compaq, /usr/sbin/psrinfo has been available on + # OSF/1 and Tru64 systems produced since 1995. I hope that + # covers most systems running today. This code pipes the CPU + # types through head -n 1, so we only detect the type of CPU 0. + ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1` + case "$ALPHA_CPU_TYPE" in + "EV4 (21064)") + UNAME_MACHINE=alpha ;; + "EV4.5 (21064)") + UNAME_MACHINE=alpha ;; + "LCA4 (21066/21068)") + UNAME_MACHINE=alpha ;; + "EV5 (21164)") + UNAME_MACHINE=alphaev5 ;; + "EV5.6 (21164A)") + UNAME_MACHINE=alphaev56 ;; + "EV5.6 (21164PC)") + UNAME_MACHINE=alphapca56 ;; + "EV5.7 (21164PC)") + UNAME_MACHINE=alphapca57 ;; + "EV6 (21264)") + UNAME_MACHINE=alphaev6 ;; + "EV6.7 (21264A)") + UNAME_MACHINE=alphaev67 ;; + "EV6.8CB (21264C)") + UNAME_MACHINE=alphaev68 ;; + "EV6.8AL (21264B)") + UNAME_MACHINE=alphaev68 ;; + "EV6.8CX (21264D)") + UNAME_MACHINE=alphaev68 ;; + "EV6.9A (21264/EV69A)") + UNAME_MACHINE=alphaev69 ;; + "EV7 (21364)") + UNAME_MACHINE=alphaev7 ;; + "EV7.9 (21364A)") + UNAME_MACHINE=alphaev79 ;; + esac + # A Pn.n version is a patched version. + # A Vn.n version is a released version. + # A Tn.n version is a released field test version. + # A Xn.n version is an unreleased experimental baselevel. + # 1.2 uses "1.2" for uname -r. + echo "$UNAME_MACHINE"-dec-osf"`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`" + # Reset EXIT trap before exiting to avoid spurious non-zero exit code. + exitcode=$? + trap '' 0 + exit $exitcode ;; + Amiga*:UNIX_System_V:4.0:*) + echo m68k-${VENDOR}-sysv4 + exit ;; + *:[Aa]miga[Oo][Ss]:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-amigaos + exit ;; + *:[Mm]orph[Oo][Ss]:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-morphos + exit ;; + *:OS/390:*:*) + echo i370-ibm-openedition + exit ;; + *:z/VM:*:*) + echo s390-ibm-zvmoe + exit ;; + *:OS400:*:*) + echo powerpc-ibm-os400 + exit ;; + arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*) + echo arm-acorn-riscix"$UNAME_RELEASE" + exit ;; + arm*:riscos:*:*|arm*:RISCOS:*:*) + echo arm-${VENDOR}-riscos + exit ;; + SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*) + echo hppa1.1-hitachi-hiuxmpp + exit ;; + Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*) + # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE. + if test "`(/bin/universe) 2>/dev/null`" = att ; then + echo pyramid-pyramid-sysv3 + else + echo pyramid-pyramid-bsd + fi + exit ;; + NILE*:*:*:dcosx) + echo pyramid-pyramid-svr4 + exit ;; + DRS?6000:unix:4.0:6*) + echo sparc-icl-nx6 + exit ;; + DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*) + case `/usr/bin/uname -p` in + sparc) echo sparc-icl-nx7; exit ;; + esac ;; + s390x:SunOS:*:*) + echo "$UNAME_MACHINE"-ibm-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`" + exit ;; + sun4H:SunOS:5.*:*) + echo sparc-hal-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*) + echo sparc-sun-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`" + exit ;; + i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*) + echo i386-pc-auroraux"$UNAME_RELEASE" + exit ;; + i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*) + eval "$set_cc_for_build" + SUN_ARCH=i386 + # If there is a compiler, see if it is configured for 64-bit objects. + # Note that the Sun cc does not turn __LP64__ into 1 like gcc does. + # This test works for both compilers. + if [ "$CC_FOR_BUILD" != no_compiler_found ]; then + if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + SUN_ARCH=x86_64 + fi + fi + echo "$SUN_ARCH"-pc-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + sun4*:SunOS:6*:*) + # According to config.sub, this is the proper way to canonicalize + # SunOS6. Hard to guess exactly what SunOS6 will be like, but + # it's likely to be more like Solaris than SunOS4. + echo sparc-sun-solaris3"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + sun4*:SunOS:*:*) + case "`/usr/bin/arch -k`" in + Series*|S4*) + UNAME_RELEASE=`uname -v` + ;; + esac + # Japanese Language versions have a version number like `4.1.3-JL'. + echo sparc-sun-sunos"`echo "$UNAME_RELEASE"|sed -e 's/-/_/'`" + exit ;; + sun3*:SunOS:*:*) + echo m68k-sun-sunos"$UNAME_RELEASE" + exit ;; + sun*:*:4.2BSD:*) + UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` + test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3 + case "`/bin/arch`" in + sun3) + echo m68k-sun-sunos"$UNAME_RELEASE" + ;; + sun4) + echo sparc-sun-sunos"$UNAME_RELEASE" + ;; + esac + exit ;; + aushp:SunOS:*:*) + echo sparc-auspex-sunos"$UNAME_RELEASE" + exit ;; + # The situation for MiNT is a little confusing. The machine name + # can be virtually everything (everything which is not + # "atarist" or "atariste" at least should have a processor + # > m68000). The system name ranges from "MiNT" over "FreeMiNT" + # to the lowercase version "mint" (or "freemint"). Finally + # the system name "TOS" denotes a system which is actually not + # MiNT. But MiNT is downward compatible to TOS, so this should + # be no problem. + atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint"$UNAME_RELEASE" + exit ;; + atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint"$UNAME_RELEASE" + exit ;; + *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) + echo m68k-atari-mint"$UNAME_RELEASE" + exit ;; + milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) + echo m68k-milan-mint"$UNAME_RELEASE" + exit ;; + hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) + echo m68k-hades-mint"$UNAME_RELEASE" + exit ;; + *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) + echo m68k-${VENDOR}-mint"$UNAME_RELEASE" + exit ;; + m68k:machten:*:*) + echo m68k-apple-machten"$UNAME_RELEASE" + exit ;; + powerpc:machten:*:*) + echo powerpc-apple-machten"$UNAME_RELEASE" + exit ;; + RISC*:Mach:*:*) + echo mips-dec-mach_bsd4.3 + exit ;; + RISC*:ULTRIX:*:*) + echo mips-dec-ultrix"$UNAME_RELEASE" + exit ;; + VAX*:ULTRIX*:*:*) + echo vax-dec-ultrix"$UNAME_RELEASE" + exit ;; + 2020:CLIX:*:* | 2430:CLIX:*:*) + echo clipper-intergraph-clix"$UNAME_RELEASE" + exit ;; + mips:*:*:UMIPS | mips:*:*:RISCos) + eval "$set_cc_for_build" + sed 's/^ //' << EOF > "$dummy.c" +#ifdef __cplusplus +#include <stdio.h> /* for printf() prototype */ + int main (int argc, char *argv[]) { +#else + int main (argc, argv) int argc; char *argv[]; { +#endif + #if defined (host_mips) && defined (MIPSEB) + #if defined (SYSTYPE_SYSV) + printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_SVR4) + printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) + printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0); + #endif + #endif + exit (-1); + } +EOF + $CC_FOR_BUILD -o "$dummy" "$dummy.c" && + dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` && + SYSTEM_NAME=`"$dummy" "$dummyarg"` && + { echo "$SYSTEM_NAME"; exit; } + echo mips-mips-riscos"$UNAME_RELEASE" + exit ;; + Motorola:PowerMAX_OS:*:*) + echo powerpc-motorola-powermax + exit ;; + Motorola:*:4.3:PL8-*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:Power_UNIX:*:*) + echo powerpc-harris-powerunix + exit ;; + m88k:CX/UX:7*:*) + echo m88k-harris-cxux7 + exit ;; + m88k:*:4*:R4*) + echo m88k-motorola-sysv4 + exit ;; + m88k:*:3*:R3*) + echo m88k-motorola-sysv3 + exit ;; + AViiON:dgux:*:*) + # DG/UX returns AViiON for all architectures + UNAME_PROCESSOR=`/usr/bin/uname -p` + if [ "$UNAME_PROCESSOR" = mc88100 ] || [ "$UNAME_PROCESSOR" = mc88110 ] + then + if [ "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx ] || \ + [ "$TARGET_BINARY_INTERFACE"x = x ] + then + echo m88k-dg-dgux"$UNAME_RELEASE" + else + echo m88k-dg-dguxbcs"$UNAME_RELEASE" + fi + else + echo i586-dg-dgux"$UNAME_RELEASE" + fi + exit ;; + M88*:DolphinOS:*:*) # DolphinOS (SVR3) + echo m88k-dolphin-sysv3 + exit ;; + M88*:*:R3*:*) + # Delta 88k system running SVR3 + echo m88k-motorola-sysv3 + exit ;; + XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) + echo m88k-tektronix-sysv3 + exit ;; + Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) + echo m68k-tektronix-bsd + exit ;; + *:IRIX*:*:*) + echo mips-sgi-irix"`echo "$UNAME_RELEASE"|sed -e 's/-/_/g'`" + exit ;; + ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. + echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id + exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' + i*86:AIX:*:*) + echo i386-ibm-aix + exit ;; + ia64:AIX:*:*) + if [ -x /usr/bin/oslevel ] ; then + IBM_REV=`/usr/bin/oslevel` + else + IBM_REV="$UNAME_VERSION.$UNAME_RELEASE" + fi + echo "$UNAME_MACHINE"-ibm-aix"$IBM_REV" + exit ;; + *:AIX:2:3) + if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then + eval "$set_cc_for_build" + sed 's/^ //' << EOF > "$dummy.c" + #include <sys/systemcfg.h> + + main() + { + if (!__power_pc()) + exit(1); + puts("powerpc-ibm-aix3.2.5"); + exit(0); + } +EOF + if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` + then + echo "$SYSTEM_NAME" + else + echo rs6000-ibm-aix3.2.5 + fi + elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then + echo rs6000-ibm-aix3.2.4 + else + echo rs6000-ibm-aix3.2 + fi + exit ;; + *:AIX:*:[4567]) + IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` + if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then + IBM_ARCH=rs6000 + else + IBM_ARCH=powerpc + fi + if [ -x /usr/bin/lslpp ] ; then + IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | + awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` + else + IBM_REV="$UNAME_VERSION.$UNAME_RELEASE" + fi + echo "$IBM_ARCH"-ibm-aix"$IBM_REV" + exit ;; + *:AIX:*:*) + echo rs6000-ibm-aix + exit ;; + ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*) + echo romp-ibm-bsd4.4 + exit ;; + ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and + echo romp-ibm-bsd"$UNAME_RELEASE" # 4.3 with uname added to + exit ;; # report: romp-ibm BSD 4.3 + *:BOSX:*:*) + echo rs6000-bull-bosx + exit ;; + DPX/2?00:B.O.S.:*:*) + echo m68k-bull-sysv3 + exit ;; + 9000/[34]??:4.3bsd:1.*:*) + echo m68k-hp-bsd + exit ;; + hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) + echo m68k-hp-bsd4.4 + exit ;; + 9000/[34678]??:HP-UX:*:*) + HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'` + case "$UNAME_MACHINE" in + 9000/31?) HP_ARCH=m68000 ;; + 9000/[34]??) HP_ARCH=m68k ;; + 9000/[678][0-9][0-9]) + if [ -x /usr/bin/getconf ]; then + sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` + sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` + case "$sc_cpu_version" in + 523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0 + 528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1 + 532) # CPU_PA_RISC2_0 + case "$sc_kernel_bits" in + 32) HP_ARCH=hppa2.0n ;; + 64) HP_ARCH=hppa2.0w ;; + '') HP_ARCH=hppa2.0 ;; # HP-UX 10.20 + esac ;; + esac + fi + if [ "$HP_ARCH" = "" ]; then + eval "$set_cc_for_build" + sed 's/^ //' << EOF > "$dummy.c" + + #define _HPUX_SOURCE + #include <stdlib.h> + #include <unistd.h> + + int main () + { + #if defined(_SC_KERNEL_BITS) + long bits = sysconf(_SC_KERNEL_BITS); + #endif + long cpu = sysconf (_SC_CPU_VERSION); + + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1"); break; + case CPU_PA_RISC2_0: + #if defined(_SC_KERNEL_BITS) + switch (bits) + { + case 64: puts ("hppa2.0w"); break; + case 32: puts ("hppa2.0n"); break; + default: puts ("hppa2.0"); break; + } break; + #else /* !defined(_SC_KERNEL_BITS) */ + puts ("hppa2.0"); break; + #endif + default: puts ("hppa1.0"); break; + } + exit (0); + } +EOF + (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"` + test -z "$HP_ARCH" && HP_ARCH=hppa + fi ;; + esac + if [ "$HP_ARCH" = hppa2.0w ] + then + eval "$set_cc_for_build" + + # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating + # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler + # generating 64-bit code. GNU and HP use different nomenclature: + # + # $ CC_FOR_BUILD=cc ./config.guess + # => hppa2.0w-hp-hpux11.23 + # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess + # => hppa64-hp-hpux11.23 + + if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | + grep -q __LP64__ + then + HP_ARCH=hppa2.0w + else + HP_ARCH=hppa64 + fi + fi + echo "$HP_ARCH"-hp-hpux"$HPUX_REV" + exit ;; + ia64:HP-UX:*:*) + HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'` + echo ia64-hp-hpux"$HPUX_REV" + exit ;; + 3050*:HI-UX:*:*) + eval "$set_cc_for_build" + sed 's/^ //' << EOF > "$dummy.c" + #include <unistd.h> + int + main () + { + long cpu = sysconf (_SC_CPU_VERSION); + /* The order matters, because CPU_IS_HP_MC68K erroneously returns + true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct + results, however. */ + if (CPU_IS_PA_RISC (cpu)) + { + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; + case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; + default: puts ("hppa-hitachi-hiuxwe2"); break; + } + } + else if (CPU_IS_HP_MC68K (cpu)) + puts ("m68k-hitachi-hiuxwe2"); + else puts ("unknown-hitachi-hiuxwe2"); + exit (0); + } +EOF + $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` && + { echo "$SYSTEM_NAME"; exit; } + echo unknown-hitachi-hiuxwe2 + exit ;; + 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*) + echo hppa1.1-hp-bsd + exit ;; + 9000/8??:4.3bsd:*:*) + echo hppa1.0-hp-bsd + exit ;; + *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) + echo hppa1.0-hp-mpeix + exit ;; + hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*) + echo hppa1.1-hp-osf + exit ;; + hp8??:OSF1:*:*) + echo hppa1.0-hp-osf + exit ;; + i*86:OSF1:*:*) + if [ -x /usr/sbin/sysversion ] ; then + echo "$UNAME_MACHINE"-${VENDOR}-osf1mk + else + echo "$UNAME_MACHINE"-${VENDOR}-osf1 + fi + exit ;; + parisc*:Lites*:*:*) + echo hppa1.1-hp-lites + exit ;; + C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) + echo c1-convex-bsd + exit ;; + C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) + if getsysinfo -f scalar_acc + then echo c32-convex-bsd + else echo c2-convex-bsd + fi + exit ;; + C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) + echo c34-convex-bsd + exit ;; + C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) + echo c38-convex-bsd + exit ;; + C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) + echo c4-convex-bsd + exit ;; + CRAY*Y-MP:*:*:*) + echo ymp-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*[A-Z]90:*:*:*) + echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \ + | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ + -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ + -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*TS:*:*:*) + echo t90-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*T3E:*:*:*) + echo alphaev5-cray-unicosmk"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*SV1:*:*:*) + echo sv1-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + *:UNICOS/mp:*:*) + echo craynv-cray-unicosmp"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) + FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` + FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` + FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'` + echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + 5000:UNIX_System_V:4.*:*) + FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` + FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'` + echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) + echo "$UNAME_MACHINE"-pc-bsdi"$UNAME_RELEASE" + exit ;; + sparc*:BSD/OS:*:*) + echo sparc-${VENDOR}-bsdi"$UNAME_RELEASE" + exit ;; + *:BSD/OS:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-bsdi"$UNAME_RELEASE" + exit ;; + *:FreeBSD:*:*) + UNAME_PROCESSOR=`/usr/bin/uname -p` + case "$UNAME_PROCESSOR" in + amd64) + UNAME_PROCESSOR=x86_64 ;; + i386) + UNAME_PROCESSOR=i586 ;; + esac + echo "$UNAME_PROCESSOR"-${VENDOR}-freebsd"`echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`" + exit ;; + i*:CYGWIN*:*) + echo "$UNAME_MACHINE"-pc-cygwin + exit ;; + *:MINGW64*:*) + echo "$UNAME_MACHINE"-pc-mingw64 + exit ;; + *:MINGW*:*) + echo "$UNAME_MACHINE"-pc-mingw32 + exit ;; + *:MSYS*:*) + echo "$UNAME_MACHINE"-pc-msys + exit ;; + i*:PW*:*) + echo "$UNAME_MACHINE"-pc-pw32 + exit ;; + *:Interix*:*) + case "$UNAME_MACHINE" in + x86) + echo i586-pc-interix"$UNAME_RELEASE" + exit ;; + authenticamd | genuineintel | EM64T) + echo x86_64-${VENDOR}-interix"$UNAME_RELEASE" + exit ;; + IA64) + echo ia64-${VENDOR}-interix"$UNAME_RELEASE" + exit ;; + esac ;; + i*:UWIN*:*) + echo "$UNAME_MACHINE"-pc-uwin + exit ;; + amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) + echo x86_64-${VENDOR}-cygwin + exit ;; + prep*:SunOS:5.*:*) + echo powerpcle-${VENDOR}-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + *:GNU:*:*) + # the GNU system + echo "`echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,'`-${VENDOR}-$LIBC`echo "$UNAME_RELEASE"|sed -e 's,/.*$,,'`" + exit ;; + *:GNU/*:*:*) + # other systems with GNU libc and userland + echo "$UNAME_MACHINE-${VENDOR}-`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"``echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`-$LIBC" + exit ;; + i*86:Minix:*:*) + echo "$UNAME_MACHINE"-pc-minix + exit ;; + aarch64:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + aarch64_be:Linux:*:*) + UNAME_MACHINE=aarch64_be + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + alpha:Linux:*:*) + case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in + EV5) UNAME_MACHINE=alphaev5 ;; + EV56) UNAME_MACHINE=alphaev56 ;; + PCA56) UNAME_MACHINE=alphapca56 ;; + PCA57) UNAME_MACHINE=alphapca56 ;; + EV6) UNAME_MACHINE=alphaev6 ;; + EV67) UNAME_MACHINE=alphaev67 ;; + EV68*) UNAME_MACHINE=alphaev68 ;; + esac + objdump --private-headers /bin/sh | grep -q ld.so.1 + if test "$?" = 0 ; then LIBC=gnulibc1 ; fi + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + arc:Linux:*:* | arceb:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + arm*:Linux:*:*) + eval "$set_cc_for_build" + if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_EABI__ + then + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + else + if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_PCS_VFP + then + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC"eabi + else + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC"eabihf + fi + fi + exit ;; + avr32*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + cris:Linux:*:*) + echo "$UNAME_MACHINE"-axis-linux-"$LIBC" + exit ;; + crisv32:Linux:*:*) + echo "$UNAME_MACHINE"-axis-linux-"$LIBC" + exit ;; + e2k:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + frv:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + hexagon:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + i*86:Linux:*:*) + echo "$UNAME_MACHINE"-pc-linux-"$LIBC" + exit ;; + ia64:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + k1om:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + m32r*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + m68*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + mips:Linux:*:* | mips64:Linux:*:*) + eval "$set_cc_for_build" + sed 's/^ //' << EOF > "$dummy.c" + #undef CPU + #undef ${UNAME_MACHINE} + #undef ${UNAME_MACHINE}el + #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) + CPU=${UNAME_MACHINE}el + #else + #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) + CPU=${UNAME_MACHINE} + #else + CPU= + #endif + #endif +EOF + eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU'`" + test "x$CPU" != x && { echo "$CPU-${VENDOR}-linux-$LIBC"; exit; } + ;; + mips64el:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + openrisc*:Linux:*:*) + echo or1k-${VENDOR}-linux-"$LIBC" + exit ;; + or32:Linux:*:* | or1k*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + padre:Linux:*:*) + echo sparc-${VENDOR}-linux-"$LIBC" + exit ;; + parisc64:Linux:*:* | hppa64:Linux:*:*) + echo hppa64-${VENDOR}-linux-"$LIBC" + exit ;; + parisc:Linux:*:* | hppa:Linux:*:*) + # Look for CPU level + case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in + PA7*) echo hppa1.1-${VENDOR}-linux-"$LIBC" ;; + PA8*) echo hppa2.0-${VENDOR}-linux-"$LIBC" ;; + *) echo hppa-${VENDOR}-linux-"$LIBC" ;; + esac + exit ;; + ppc64:Linux:*:*) + echo powerpc64-${VENDOR}-linux-"$LIBC" + exit ;; + ppc:Linux:*:*) + echo powerpc-${VENDOR}-linux-"$LIBC" + exit ;; + ppc64le:Linux:*:*) + echo powerpc64le-${VENDOR}-linux-"$LIBC" + exit ;; + ppcle:Linux:*:*) + echo powerpcle-${VENDOR}-linux-"$LIBC" + exit ;; + riscv32:Linux:*:* | riscv64:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + s390:Linux:*:* | s390x:Linux:*:*) + echo "$UNAME_MACHINE"-ibm-linux-"$LIBC" + exit ;; + sh64*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + sh*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + sparc:Linux:*:* | sparc64:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + tile*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + vax:Linux:*:*) + echo "$UNAME_MACHINE"-dec-linux-"$LIBC" + exit ;; + x86_64:Linux:*:*) + echo "$UNAME_MACHINE"-pc-linux-"$LIBC" + exit ;; + xtensa*:Linux:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-linux-"$LIBC" + exit ;; + i*86:DYNIX/ptx:4*:*) + # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. + # earlier versions are messed up and put the nodename in both + # sysname and nodename. + echo i386-sequent-sysv4 + exit ;; + i*86:UNIX_SV:4.2MP:2.*) + # Unixware is an offshoot of SVR4, but it has its own version + # number series starting with 2... + # I am not positive that other SVR4 systems won't match this, + # I just have to hope. -- rms. + # Use sysv4.2uw... so that sysv4* matches it. + echo "$UNAME_MACHINE"-pc-sysv4.2uw"$UNAME_VERSION" + exit ;; + i*86:OS/2:*:*) + # If we were able to find `uname', then EMX Unix compatibility + # is probably installed. + echo "$UNAME_MACHINE"-pc-os2-emx + exit ;; + i*86:XTS-300:*:STOP) + echo "$UNAME_MACHINE"-${VENDOR}-stop + exit ;; + i*86:atheos:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-atheos + exit ;; + i*86:syllable:*:*) + echo "$UNAME_MACHINE"-pc-syllable + exit ;; + i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) + echo i386-${VENDOR}-lynxos"$UNAME_RELEASE" + exit ;; + i*86:*DOS:*:*) + echo "$UNAME_MACHINE"-pc-msdosdjgpp + exit ;; + i*86:*:4.*:*) + UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'` + if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then + echo "$UNAME_MACHINE"-univel-sysv"$UNAME_REL" + else + echo "$UNAME_MACHINE"-pc-sysv"$UNAME_REL" + fi + exit ;; + i*86:*:5:[678]*) + # UnixWare 7.x, OpenUNIX and OpenServer 6. + case `/bin/uname -X | grep "^Machine"` in + *486*) UNAME_MACHINE=i486 ;; + *Pentium) UNAME_MACHINE=i586 ;; + *Pent*|*Celeron) UNAME_MACHINE=i686 ;; + esac + echo "$UNAME_MACHINE-${VENDOR}-sysv${UNAME_RELEASE}${UNAME_SYSTEM}{$UNAME_VERSION}" + exit ;; + i*86:*:3.2:*) + if test -f /usr/options/cb.name; then + UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name` + echo "$UNAME_MACHINE"-pc-isc"$UNAME_REL" + elif /bin/uname -X 2>/dev/null >/dev/null ; then + UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` + (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 + (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ + && UNAME_MACHINE=i586 + (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ + && UNAME_MACHINE=i686 + (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ + && UNAME_MACHINE=i686 + echo "$UNAME_MACHINE"-pc-sco"$UNAME_REL" + else + echo "$UNAME_MACHINE"-pc-sysv32 + fi + exit ;; + pc:*:*:*) + # Left here for compatibility: + # uname -m prints for DJGPP always 'pc', but it prints nothing about + # the processor, so we play safe by assuming i586. + # Note: whatever this is, it MUST be the same as what config.sub + # prints for the "djgpp" host, or else GDB configure will decide that + # this is a cross-build. + echo i586-pc-msdosdjgpp + exit ;; + Intel:Mach:3*:*) + echo i386-pc-mach3 + exit ;; + paragon:*:*:*) + echo i860-intel-osf1 + exit ;; + i860:*:4.*:*) # i860-SVR4 + if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then + echo i860-stardent-sysv"$UNAME_RELEASE" # Stardent Vistra i860-SVR4 + else # Add other i860-SVR4 vendors below as they are discovered. + echo i860-${VENDOR}-sysv"$UNAME_RELEASE" # Unknown i860-SVR4 + fi + exit ;; + mini*:CTIX:SYS*5:*) + # "miniframe" + echo m68010-convergent-sysv + exit ;; + mc68k:UNIX:SYSTEM5:3.51m) + echo m68k-convergent-sysv + exit ;; + M680?0:D-NIX:5.3:*) + echo m68k-diab-dnix + exit ;; + M68*:*:R3V[5678]*:*) + test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; + 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) + OS_REL='' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; + 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4; exit; } ;; + NCR*:*:4.2:* | MPRAS*:*:4.2:*) + OS_REL='.3' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } + /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ + && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; + m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) + echo m68k-${VENDOR}-lynxos"$UNAME_RELEASE" + exit ;; + mc68030:UNIX_System_V:4.*:*) + echo m68k-atari-sysv4 + exit ;; + TSUNAMI:LynxOS:2.*:*) + echo sparc-${VENDOR}-lynxos"$UNAME_RELEASE" + exit ;; + rs6000:LynxOS:2.*:*) + echo rs6000-${VENDOR}-lynxos"$UNAME_RELEASE" + exit ;; + PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) + echo powerpc-${VENDOR}-lynxos"$UNAME_RELEASE" + exit ;; + SM[BE]S:UNIX_SV:*:*) + echo mips-dde-sysv"$UNAME_RELEASE" + exit ;; + RM*:ReliantUNIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + RM*:SINIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + *:SINIX-*:*:*) + if uname -p 2>/dev/null >/dev/null ; then + UNAME_MACHINE=`(uname -p) 2>/dev/null` + echo "$UNAME_MACHINE"-sni-sysv4 + else + echo ns32k-sni-sysv + fi + exit ;; + PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort + # says <Richard.M.Bartel@ccMail.Census.GOV> + echo i586-unisys-sysv4 + exit ;; + *:UNIX_System_V:4*:FTX*) + # From Gerald Hewes <hewes@openmarket.com>. + # How about differentiating between stratus architectures? -djm + echo hppa1.1-stratus-sysv4 + exit ;; + *:*:*:FTX*) + # From seanf@swdc.stratus.com. + echo i860-stratus-sysv4 + exit ;; + i*86:VOS:*:*) + # From Paul.Green@stratus.com. + echo "$UNAME_MACHINE"-stratus-vos + exit ;; + *:VOS:*:*) + # From Paul.Green@stratus.com. + echo hppa1.1-stratus-vos + exit ;; + mc68*:A/UX:*:*) + echo m68k-apple-aux"$UNAME_RELEASE" + exit ;; + news*:NEWS-OS:6*:*) + echo mips-sony-newsos6 + exit ;; + R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) + if [ -d /usr/nec ]; then + echo mips-nec-sysv"$UNAME_RELEASE" + else + echo mips-${VENDOR}-sysv"$UNAME_RELEASE" + fi + exit ;; + BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. + echo powerpc-be-beos + exit ;; + BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. + echo powerpc-apple-beos + exit ;; + BePC:BeOS:*:*) # BeOS running on Intel PC compatible. + echo i586-pc-beos + exit ;; + BePC:Haiku:*:*) # Haiku running on Intel PC compatible. + echo i586-pc-haiku + exit ;; + x86_64:Haiku:*:*) + echo x86_64-${VENDOR}-haiku + exit ;; + SX-4:SUPER-UX:*:*) + echo sx4-nec-superux"$UNAME_RELEASE" + exit ;; + SX-5:SUPER-UX:*:*) + echo sx5-nec-superux"$UNAME_RELEASE" + exit ;; + SX-6:SUPER-UX:*:*) + echo sx6-nec-superux"$UNAME_RELEASE" + exit ;; + SX-7:SUPER-UX:*:*) + echo sx7-nec-superux"$UNAME_RELEASE" + exit ;; + SX-8:SUPER-UX:*:*) + echo sx8-nec-superux"$UNAME_RELEASE" + exit ;; + SX-8R:SUPER-UX:*:*) + echo sx8r-nec-superux"$UNAME_RELEASE" + exit ;; + SX-ACE:SUPER-UX:*:*) + echo sxace-nec-superux"$UNAME_RELEASE" + exit ;; + Power*:Rhapsody:*:*) + echo powerpc-apple-rhapsody"$UNAME_RELEASE" + exit ;; + *:Rhapsody:*:*) + echo "$UNAME_MACHINE"-apple-rhapsody"$UNAME_RELEASE" + exit ;; + *:Darwin:*:*) + UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown + eval "$set_cc_for_build" + if test "$UNAME_PROCESSOR" = unknown ; then + UNAME_PROCESSOR=powerpc + fi + if test "`echo "$UNAME_RELEASE" | sed -e 's/\..*//'`" -le 10 ; then + if [ "$CC_FOR_BUILD" != no_compiler_found ]; then + if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + case $UNAME_PROCESSOR in + i386) UNAME_PROCESSOR=x86_64 ;; + powerpc) UNAME_PROCESSOR=powerpc64 ;; + esac + fi + # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc + if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \ + (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_PPC >/dev/null + then + UNAME_PROCESSOR=powerpc + fi + fi + elif test "$UNAME_PROCESSOR" = i386 ; then + # Avoid executing cc on OS X 10.9, as it ships with a stub + # that puts up a graphical alert prompting to install + # developer tools. Any system running Mac OS X 10.7 or + # later (Darwin 11 and later) is required to have a 64-bit + # processor. This is not true of the ARM version of Darwin + # that Apple uses in portable devices. + UNAME_PROCESSOR=x86_64 + fi + echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE" + exit ;; + *:procnto*:*:* | *:QNX:[0123456789]*:*) + UNAME_PROCESSOR=`uname -p` + if test "$UNAME_PROCESSOR" = x86; then + UNAME_PROCESSOR=i386 + UNAME_MACHINE=pc + fi + echo "$UNAME_PROCESSOR"-"$UNAME_MACHINE"-nto-qnx"$UNAME_RELEASE" + exit ;; + *:QNX:*:4*) + echo i386-pc-qnx + exit ;; + NEO-*:NONSTOP_KERNEL:*:*) + echo neo-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSE-*:NONSTOP_KERNEL:*:*) + echo nse-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSR-*:NONSTOP_KERNEL:*:*) + echo nsr-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSV-*:NONSTOP_KERNEL:*:*) + echo nsv-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSX-*:NONSTOP_KERNEL:*:*) + echo nsx-tandem-nsk"$UNAME_RELEASE" + exit ;; + *:NonStop-UX:*:*) + echo mips-compaq-nonstopux + exit ;; + BS2000:POSIX*:*:*) + echo bs2000-siemens-sysv + exit ;; + DS/*:UNIX_System_V:*:*) + echo "$UNAME_MACHINE"-"$UNAME_SYSTEM"-"$UNAME_RELEASE" + exit ;; + *:Plan9:*:*) + # "uname -m" is not consistent, so use $cputype instead. 386 + # is converted to i386 for consistency with other x86 + # operating systems. + if test "$cputype" = 386; then + UNAME_MACHINE=i386 + else + UNAME_MACHINE="$cputype" + fi + echo "$UNAME_MACHINE"-${VENDOR}-plan9 + exit ;; + *:TOPS-10:*:*) + echo pdp10-${VENDOR}-tops10 + exit ;; + *:TENEX:*:*) + echo pdp10-${VENDOR}-tenex + exit ;; + KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) + echo pdp10-dec-tops20 + exit ;; + XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) + echo pdp10-xkl-tops20 + exit ;; + *:TOPS-20:*:*) + echo pdp10-${VENDOR}-tops20 + exit ;; + *:ITS:*:*) + echo pdp10-${VENDOR}-its + exit ;; + SEI:*:*:SEIUX) + echo mips-sei-seiux"$UNAME_RELEASE" + exit ;; + *:DragonFly:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-dragonfly"`echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`" + exit ;; + *:*VMS:*:*) + UNAME_MACHINE=`(uname -p) 2>/dev/null` + case "$UNAME_MACHINE" in + A*) echo alpha-dec-vms ; exit ;; + I*) echo ia64-dec-vms ; exit ;; + V*) echo vax-dec-vms ; exit ;; + esac ;; + *:XENIX:*:SysV) + echo i386-pc-xenix + exit ;; + i*86:skyos:*:*) + echo "$UNAME_MACHINE"-pc-skyos"`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`" + exit ;; + i*86:rdos:*:*) + echo "$UNAME_MACHINE"-pc-rdos + exit ;; + i*86:AROS:*:*) + echo "$UNAME_MACHINE"-pc-aros + exit ;; + x86_64:VMkernel:*:*) + echo "$UNAME_MACHINE"-${VENDOR}-esx + exit ;; + amd64:Isilon\ OneFS:*:*) + echo x86_64-${VENDOR}-onefs + exit ;; +esac + +echo "$0: unable to guess system type" >&2 + +case "$UNAME_MACHINE:$UNAME_SYSTEM" in + mips:Linux | mips64:Linux) + # If we got here on MIPS GNU/Linux, output extra information. + cat >&2 <<EOF + +NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize +the system type. Please install a C compiler and try again. +EOF + ;; +esac + +cat >&2 <<EOF + +This script (version $timestamp), has failed to recognize the +operating system you are using. If your script is old, overwrite *all* +copies of config.guess and config.sub with the latest versions from: + + https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess +and + https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub + +If $0 has already been updated, send the following data and any +information you think might be pertinent to config-patches@gnu.org to +provide the necessary information to handle your system. + +config.guess timestamp = $timestamp + +uname -m = `(uname -m) 2>/dev/null || echo unknown` +uname -r = `(uname -r) 2>/dev/null || echo unknown` +uname -s = `(uname -s) 2>/dev/null || echo unknown` +uname -v = `(uname -v) 2>/dev/null || echo unknown` + +/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` +/bin/uname -X = `(/bin/uname -X) 2>/dev/null` + +hostinfo = `(hostinfo) 2>/dev/null` +/bin/universe = `(/bin/universe) 2>/dev/null` +/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` +/bin/arch = `(/bin/arch) 2>/dev/null` +/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` +/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` + +UNAME_MACHINE = "$UNAME_MACHINE" +UNAME_RELEASE = "$UNAME_RELEASE" +UNAME_SYSTEM = "$UNAME_SYSTEM" +UNAME_VERSION = "$UNAME_VERSION" +EOF + +exit 1 + +# Local variables: +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/config/config.sub b/config/config.sub new file mode 100755 index 00000000..d210453d --- /dev/null +++ b/config/config.sub @@ -0,0 +1,1807 @@ +#! /bin/sh +# Configuration validation subroutine script. +# Copyright 1992-2018 Free Software Foundation, Inc. + +timestamp='2018-03-08' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see <https://www.gnu.org/licenses/>. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that +# program. This Exception is an additional permission under section 7 +# of the GNU General Public License, version 3 ("GPLv3"). + + +# Please send patches to <config-patches@gnu.org>. +# +# Configuration subroutine to validate and canonicalize a configuration type. +# Supply the specified configuration type as an argument. +# If it is invalid, we print an error message on stderr and exit with code 1. +# Otherwise, we print the canonical config type on stdout and succeed. + +# You can get the latest version of this script from: +# https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub + +# This file is supposed to be the same for all GNU packages +# and recognize all the CPU types, system types and aliases +# that are meaningful with *any* GNU software. +# Each package is responsible for reporting which valid configurations +# it does not support. The user should be able to distinguish +# a failure to support a valid configuration from a meaningless +# configuration. + +# The goal of this file is to map all the various variations of a given +# machine specification into a single specification in the form: +# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM +# or in some cases, the newer four-part form: +# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM +# It is wrong to echo any other type of specification. + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS + +Canonicalize a configuration name. + +Options: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to <config-patches@gnu.org>." + +version="\ +GNU config.sub ($timestamp) + +Copyright 1992-2018 Free Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" + exit 1 ;; + + *local*) + # First pass through any local machine types. + echo "$1" + exit ;; + + * ) + break ;; + esac +done + +case $# in + 0) echo "$me: missing argument$help" >&2 + exit 1;; + 1) ;; + *) echo "$me: too many arguments$help" >&2 + exit 1;; +esac + +# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). +# Here we must recognize all the valid KERNEL-OS combinations. +maybe_os=`echo "$1" | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` +case $maybe_os in + nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \ + linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \ + knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \ + kopensolaris*-gnu* | cloudabi*-eabi* | \ + storm-chaos* | os2-emx* | rtmk-nova*) + os=-$maybe_os + basic_machine=`echo "$1" | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` + ;; + android-linux) + os=-linux-android + basic_machine=`echo "$1" | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown + ;; + *) + basic_machine=`echo "$1" | sed 's/-[^-]*$//'` + if [ "$basic_machine" != "$1" ] + then os=`echo "$1" | sed 's/.*-/-/'` + else os=; fi + ;; +esac + +### Let's recognize common machines as not being operating systems so +### that things like config.sub decstation-3100 work. We also +### recognize some manufacturers as not being operating systems, so we +### can provide default operating systems below. +case $os in + -sun*os*) + # Prevent following clause from handling this invalid input. + ;; + -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \ + -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \ + -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \ + -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\ + -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \ + -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \ + -apple | -axis | -knuth | -cray | -microblaze*) + os= + basic_machine=$1 + ;; + -bluegene*) + os=-cnk + ;; + -sim | -cisco | -oki | -wec | -winbond) + os= + basic_machine=$1 + ;; + -scout) + ;; + -wrs) + os=-vxworks + basic_machine=$1 + ;; + -chorusos*) + os=-chorusos + basic_machine=$1 + ;; + -chorusrdb) + os=-chorusrdb + basic_machine=$1 + ;; + -hiux*) + os=-hiuxwe2 + ;; + -sco6) + os=-sco5v6 + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -sco5) + os=-sco3.2v5 + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -sco4) + os=-sco3.2v4 + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -sco3.2.[4-9]*) + os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -sco3.2v[4-9]*) + # Don't forget version if it is 3.2v4 or newer. + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -sco5v6*) + # Don't forget version if it is 3.2v4 or newer. + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -sco*) + os=-sco3.2v2 + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -udk*) + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -isc) + os=-isc2.2 + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -clix*) + basic_machine=clipper-intergraph + ;; + -isc*) + basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'` + ;; + -lynx*178) + os=-lynxos178 + ;; + -lynx*5) + os=-lynxos5 + ;; + -lynx*) + os=-lynxos + ;; + -ptx*) + basic_machine=`echo "$1" | sed -e 's/86-.*/86-sequent/'` + ;; + -psos*) + os=-psos + ;; + -mint | -mint[0-9]*) + basic_machine=m68k-atari + os=-mint + ;; +esac + +# Decode aliases for certain CPU-COMPANY combinations. +case $basic_machine in + # Recognize the basic CPU types without company name. + # Some are omitted here because they have special meanings below. + 1750a | 580 \ + | a29k \ + | aarch64 | aarch64_be \ + | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ + | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ + | am33_2.0 \ + | arc | arceb \ + | arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \ + | avr | avr32 \ + | ba \ + | be32 | be64 \ + | bfin \ + | c4x | c8051 | clipper \ + | d10v | d30v | dlx | dsp16xx \ + | e2k | epiphany \ + | fido | fr30 | frv | ft32 \ + | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ + | hexagon \ + | i370 | i860 | i960 | ia16 | ia64 \ + | ip2k | iq2000 \ + | k1om \ + | le32 | le64 \ + | lm32 \ + | m32c | m32r | m32rle | m68000 | m68k | m88k \ + | maxq | mb | microblaze | microblazeel | mcore | mep | metag \ + | mips | mipsbe | mipseb | mipsel | mipsle \ + | mips16 \ + | mips64 | mips64el \ + | mips64octeon | mips64octeonel \ + | mips64orion | mips64orionel \ + | mips64r5900 | mips64r5900el \ + | mips64vr | mips64vrel \ + | mips64vr4100 | mips64vr4100el \ + | mips64vr4300 | mips64vr4300el \ + | mips64vr5000 | mips64vr5000el \ + | mips64vr5900 | mips64vr5900el \ + | mipsisa32 | mipsisa32el \ + | mipsisa32r2 | mipsisa32r2el \ + | mipsisa32r6 | mipsisa32r6el \ + | mipsisa64 | mipsisa64el \ + | mipsisa64r2 | mipsisa64r2el \ + | mipsisa64r6 | mipsisa64r6el \ + | mipsisa64sb1 | mipsisa64sb1el \ + | mipsisa64sr71k | mipsisa64sr71kel \ + | mipsr5900 | mipsr5900el \ + | mipstx39 | mipstx39el \ + | mn10200 | mn10300 \ + | moxie \ + | mt \ + | msp430 \ + | nds32 | nds32le | nds32be \ + | nios | nios2 | nios2eb | nios2el \ + | ns16k | ns32k \ + | open8 | or1k | or1knd | or32 \ + | pdp10 | pj | pjl \ + | powerpc | powerpc64 | powerpc64le | powerpcle \ + | pru \ + | pyramid \ + | riscv32 | riscv64 \ + | rl78 | rx \ + | score \ + | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[234]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ + | sh64 | sh64le \ + | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ + | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ + | spu \ + | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \ + | ubicom32 \ + | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \ + | visium \ + | wasm32 \ + | x86 | xc16x | xstormy16 | xtensa \ + | z8k | z80) + basic_machine=$basic_machine-unknown + ;; + c54x) + basic_machine=tic54x-unknown + ;; + c55x) + basic_machine=tic55x-unknown + ;; + c6x) + basic_machine=tic6x-unknown + ;; + leon|leon[3-9]) + basic_machine=sparc-$basic_machine + ;; + m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip) + basic_machine=$basic_machine-unknown + os=-none + ;; + m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65) + ;; + ms1) + basic_machine=mt-unknown + ;; + + strongarm | thumb | xscale) + basic_machine=arm-unknown + ;; + xgate) + basic_machine=$basic_machine-unknown + os=-none + ;; + xscaleeb) + basic_machine=armeb-unknown + ;; + + xscaleel) + basic_machine=armel-unknown + ;; + + # We use `pc' rather than `unknown' + # because (1) that's what they normally are, and + # (2) the word "unknown" tends to confuse beginning users. + i*86 | x86_64) + basic_machine=$basic_machine-pc + ;; + # Object if more than one company name word. + *-*-*) + echo Invalid configuration \`"$1"\': machine \`"$basic_machine"\' not recognized 1>&2 + exit 1 + ;; + # Recognize the basic CPU types with company name. + 580-* \ + | a29k-* \ + | aarch64-* | aarch64_be-* \ + | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ + | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ + | alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \ + | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ + | avr-* | avr32-* \ + | ba-* \ + | be32-* | be64-* \ + | bfin-* | bs2000-* \ + | c[123]* | c30-* | [cjt]90-* | c4x-* \ + | c8051-* | clipper-* | craynv-* | cydra-* \ + | d10v-* | d30v-* | dlx-* \ + | e2k-* | elxsi-* \ + | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ + | h8300-* | h8500-* \ + | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ + | hexagon-* \ + | i*86-* | i860-* | i960-* | ia16-* | ia64-* \ + | ip2k-* | iq2000-* \ + | k1om-* \ + | le32-* | le64-* \ + | lm32-* \ + | m32c-* | m32r-* | m32rle-* \ + | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ + | m88110-* | m88k-* | maxq-* | mcore-* | metag-* \ + | microblaze-* | microblazeel-* \ + | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ + | mips16-* \ + | mips64-* | mips64el-* \ + | mips64octeon-* | mips64octeonel-* \ + | mips64orion-* | mips64orionel-* \ + | mips64r5900-* | mips64r5900el-* \ + | mips64vr-* | mips64vrel-* \ + | mips64vr4100-* | mips64vr4100el-* \ + | mips64vr4300-* | mips64vr4300el-* \ + | mips64vr5000-* | mips64vr5000el-* \ + | mips64vr5900-* | mips64vr5900el-* \ + | mipsisa32-* | mipsisa32el-* \ + | mipsisa32r2-* | mipsisa32r2el-* \ + | mipsisa32r6-* | mipsisa32r6el-* \ + | mipsisa64-* | mipsisa64el-* \ + | mipsisa64r2-* | mipsisa64r2el-* \ + | mipsisa64r6-* | mipsisa64r6el-* \ + | mipsisa64sb1-* | mipsisa64sb1el-* \ + | mipsisa64sr71k-* | mipsisa64sr71kel-* \ + | mipsr5900-* | mipsr5900el-* \ + | mipstx39-* | mipstx39el-* \ + | mmix-* \ + | mt-* \ + | msp430-* \ + | nds32-* | nds32le-* | nds32be-* \ + | nios-* | nios2-* | nios2eb-* | nios2el-* \ + | none-* | np1-* | ns16k-* | ns32k-* \ + | open8-* \ + | or1k*-* \ + | orion-* \ + | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ + | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \ + | pru-* \ + | pyramid-* \ + | riscv32-* | riscv64-* \ + | rl78-* | romp-* | rs6000-* | rx-* \ + | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ + | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ + | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ + | sparclite-* \ + | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx*-* \ + | tahoe-* \ + | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ + | tile*-* \ + | tron-* \ + | ubicom32-* \ + | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \ + | vax-* \ + | visium-* \ + | wasm32-* \ + | we32k-* \ + | x86-* | x86_64-* | xc16x-* | xps100-* \ + | xstormy16-* | xtensa*-* \ + | ymp-* \ + | z8k-* | z80-*) + ;; + # Recognize the basic CPU types without company name, with glob match. + xtensa*) + basic_machine=$basic_machine-unknown + ;; + # Recognize the various machine names and aliases which stand + # for a CPU type and a company and sometimes even an OS. + 386bsd) + basic_machine=i386-pc + os=-bsd + ;; + 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) + basic_machine=m68000-att + ;; + 3b*) + basic_machine=we32k-att + ;; + a29khif) + basic_machine=a29k-amd + os=-udi + ;; + abacus) + basic_machine=abacus-unknown + ;; + adobe68k) + basic_machine=m68010-adobe + os=-scout + ;; + alliant | fx80) + basic_machine=fx80-alliant + ;; + altos | altos3068) + basic_machine=m68k-altos + ;; + am29k) + basic_machine=a29k-none + os=-bsd + ;; + amd64) + basic_machine=x86_64-pc + ;; + amd64-*) + basic_machine=x86_64-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + amdahl) + basic_machine=580-amdahl + os=-sysv + ;; + amiga | amiga-*) + basic_machine=m68k-unknown + ;; + amigaos | amigados) + basic_machine=m68k-unknown + os=-amigaos + ;; + amigaunix | amix) + basic_machine=m68k-unknown + os=-sysv4 + ;; + apollo68) + basic_machine=m68k-apollo + os=-sysv + ;; + apollo68bsd) + basic_machine=m68k-apollo + os=-bsd + ;; + aros) + basic_machine=i386-pc + os=-aros + ;; + asmjs) + basic_machine=asmjs-unknown + ;; + aux) + basic_machine=m68k-apple + os=-aux + ;; + balance) + basic_machine=ns32k-sequent + os=-dynix + ;; + blackfin) + basic_machine=bfin-unknown + os=-linux + ;; + blackfin-*) + basic_machine=bfin-`echo "$basic_machine" | sed 's/^[^-]*-//'` + os=-linux + ;; + bluegene*) + basic_machine=powerpc-ibm + os=-cnk + ;; + c54x-*) + basic_machine=tic54x-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + c55x-*) + basic_machine=tic55x-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + c6x-*) + basic_machine=tic6x-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + c90) + basic_machine=c90-cray + os=-unicos + ;; + cegcc) + basic_machine=arm-unknown + os=-cegcc + ;; + convex-c1) + basic_machine=c1-convex + os=-bsd + ;; + convex-c2) + basic_machine=c2-convex + os=-bsd + ;; + convex-c32) + basic_machine=c32-convex + os=-bsd + ;; + convex-c34) + basic_machine=c34-convex + os=-bsd + ;; + convex-c38) + basic_machine=c38-convex + os=-bsd + ;; + cray | j90) + basic_machine=j90-cray + os=-unicos + ;; + craynv) + basic_machine=craynv-cray + os=-unicosmp + ;; + cr16 | cr16-*) + basic_machine=cr16-unknown + os=-elf + ;; + crds | unos) + basic_machine=m68k-crds + ;; + crisv32 | crisv32-* | etraxfs*) + basic_machine=crisv32-axis + ;; + cris | cris-* | etrax*) + basic_machine=cris-axis + ;; + crx) + basic_machine=crx-unknown + os=-elf + ;; + da30 | da30-*) + basic_machine=m68k-da30 + ;; + decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) + basic_machine=mips-dec + ;; + decsystem10* | dec10*) + basic_machine=pdp10-dec + os=-tops10 + ;; + decsystem20* | dec20*) + basic_machine=pdp10-dec + os=-tops20 + ;; + delta | 3300 | motorola-3300 | motorola-delta \ + | 3300-motorola | delta-motorola) + basic_machine=m68k-motorola + ;; + delta88) + basic_machine=m88k-motorola + os=-sysv3 + ;; + dicos) + basic_machine=i686-pc + os=-dicos + ;; + djgpp) + basic_machine=i586-pc + os=-msdosdjgpp + ;; + dpx20 | dpx20-*) + basic_machine=rs6000-bull + os=-bosx + ;; + dpx2*) + basic_machine=m68k-bull + os=-sysv3 + ;; + e500v[12]) + basic_machine=powerpc-unknown + os=$os"spe" + ;; + e500v[12]-*) + basic_machine=powerpc-`echo "$basic_machine" | sed 's/^[^-]*-//'` + os=$os"spe" + ;; + ebmon29k) + basic_machine=a29k-amd + os=-ebmon + ;; + elxsi) + basic_machine=elxsi-elxsi + os=-bsd + ;; + encore | umax | mmax) + basic_machine=ns32k-encore + ;; + es1800 | OSE68k | ose68k | ose | OSE) + basic_machine=m68k-ericsson + os=-ose + ;; + fx2800) + basic_machine=i860-alliant + ;; + genix) + basic_machine=ns32k-ns + ;; + gmicro) + basic_machine=tron-gmicro + os=-sysv + ;; + go32) + basic_machine=i386-pc + os=-go32 + ;; + h3050r* | hiux*) + basic_machine=hppa1.1-hitachi + os=-hiuxwe2 + ;; + h8300hms) + basic_machine=h8300-hitachi + os=-hms + ;; + h8300xray) + basic_machine=h8300-hitachi + os=-xray + ;; + h8500hms) + basic_machine=h8500-hitachi + os=-hms + ;; + harris) + basic_machine=m88k-harris + os=-sysv3 + ;; + hp300-*) + basic_machine=m68k-hp + ;; + hp300bsd) + basic_machine=m68k-hp + os=-bsd + ;; + hp300hpux) + basic_machine=m68k-hp + os=-hpux + ;; + hp3k9[0-9][0-9] | hp9[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hp9k2[0-9][0-9] | hp9k31[0-9]) + basic_machine=m68000-hp + ;; + hp9k3[2-9][0-9]) + basic_machine=m68k-hp + ;; + hp9k6[0-9][0-9] | hp6[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hp9k7[0-79][0-9] | hp7[0-79][0-9]) + basic_machine=hppa1.1-hp + ;; + hp9k78[0-9] | hp78[0-9]) + # FIXME: really hppa2.0-hp + basic_machine=hppa1.1-hp + ;; + hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) + # FIXME: really hppa2.0-hp + basic_machine=hppa1.1-hp + ;; + hp9k8[0-9][13679] | hp8[0-9][13679]) + basic_machine=hppa1.1-hp + ;; + hp9k8[0-9][0-9] | hp8[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hppaosf) + basic_machine=hppa1.1-hp + os=-osf + ;; + hppro) + basic_machine=hppa1.1-hp + os=-proelf + ;; + i370-ibm* | ibm*) + basic_machine=i370-ibm + ;; + i*86v32) + basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'` + os=-sysv32 + ;; + i*86v4*) + basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'` + os=-sysv4 + ;; + i*86v) + basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'` + os=-sysv + ;; + i*86sol2) + basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'` + os=-solaris2 + ;; + i386mach) + basic_machine=i386-mach + os=-mach + ;; + vsta) + basic_machine=i386-unknown + os=-vsta + ;; + iris | iris4d) + basic_machine=mips-sgi + case $os in + -irix*) + ;; + *) + os=-irix4 + ;; + esac + ;; + isi68 | isi) + basic_machine=m68k-isi + os=-sysv + ;; + leon-*|leon[3-9]-*) + basic_machine=sparc-`echo "$basic_machine" | sed 's/-.*//'` + ;; + m68knommu) + basic_machine=m68k-unknown + os=-linux + ;; + m68knommu-*) + basic_machine=m68k-`echo "$basic_machine" | sed 's/^[^-]*-//'` + os=-linux + ;; + magnum | m3230) + basic_machine=mips-mips + os=-sysv + ;; + merlin) + basic_machine=ns32k-utek + os=-sysv + ;; + microblaze*) + basic_machine=microblaze-xilinx + ;; + mingw64) + basic_machine=x86_64-pc + os=-mingw64 + ;; + mingw32) + basic_machine=i686-pc + os=-mingw32 + ;; + mingw32ce) + basic_machine=arm-unknown + os=-mingw32ce + ;; + miniframe) + basic_machine=m68000-convergent + ;; + *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*) + basic_machine=m68k-atari + os=-mint + ;; + mips3*-*) + basic_machine=`echo "$basic_machine" | sed -e 's/mips3/mips64/'` + ;; + mips3*) + basic_machine=`echo "$basic_machine" | sed -e 's/mips3/mips64/'`-unknown + ;; + monitor) + basic_machine=m68k-rom68k + os=-coff + ;; + morphos) + basic_machine=powerpc-unknown + os=-morphos + ;; + moxiebox) + basic_machine=moxie-unknown + os=-moxiebox + ;; + msdos) + basic_machine=i386-pc + os=-msdos + ;; + ms1-*) + basic_machine=`echo "$basic_machine" | sed -e 's/ms1-/mt-/'` + ;; + msys) + basic_machine=i686-pc + os=-msys + ;; + mvs) + basic_machine=i370-ibm + os=-mvs + ;; + nacl) + basic_machine=le32-unknown + os=-nacl + ;; + ncr3000) + basic_machine=i486-ncr + os=-sysv4 + ;; + netbsd386) + basic_machine=i386-unknown + os=-netbsd + ;; + netwinder) + basic_machine=armv4l-rebel + os=-linux + ;; + news | news700 | news800 | news900) + basic_machine=m68k-sony + os=-newsos + ;; + news1000) + basic_machine=m68030-sony + os=-newsos + ;; + news-3600 | risc-news) + basic_machine=mips-sony + os=-newsos + ;; + necv70) + basic_machine=v70-nec + os=-sysv + ;; + next | m*-next) + basic_machine=m68k-next + case $os in + -nextstep* ) + ;; + -ns2*) + os=-nextstep2 + ;; + *) + os=-nextstep3 + ;; + esac + ;; + nh3000) + basic_machine=m68k-harris + os=-cxux + ;; + nh[45]000) + basic_machine=m88k-harris + os=-cxux + ;; + nindy960) + basic_machine=i960-intel + os=-nindy + ;; + mon960) + basic_machine=i960-intel + os=-mon960 + ;; + nonstopux) + basic_machine=mips-compaq + os=-nonstopux + ;; + np1) + basic_machine=np1-gould + ;; + neo-tandem) + basic_machine=neo-tandem + ;; + nse-tandem) + basic_machine=nse-tandem + ;; + nsr-tandem) + basic_machine=nsr-tandem + ;; + nsv-tandem) + basic_machine=nsv-tandem + ;; + nsx-tandem) + basic_machine=nsx-tandem + ;; + op50n-* | op60c-*) + basic_machine=hppa1.1-oki + os=-proelf + ;; + openrisc | openrisc-*) + basic_machine=or32-unknown + ;; + os400) + basic_machine=powerpc-ibm + os=-os400 + ;; + OSE68000 | ose68000) + basic_machine=m68000-ericsson + os=-ose + ;; + os68k) + basic_machine=m68k-none + os=-os68k + ;; + pa-hitachi) + basic_machine=hppa1.1-hitachi + os=-hiuxwe2 + ;; + paragon) + basic_machine=i860-intel + os=-osf + ;; + parisc) + basic_machine=hppa-unknown + os=-linux + ;; + parisc-*) + basic_machine=hppa-`echo "$basic_machine" | sed 's/^[^-]*-//'` + os=-linux + ;; + pbd) + basic_machine=sparc-tti + ;; + pbb) + basic_machine=m68k-tti + ;; + pc532 | pc532-*) + basic_machine=ns32k-pc532 + ;; + pc98) + basic_machine=i386-pc + ;; + pc98-*) + basic_machine=i386-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + pentium | p5 | k5 | k6 | nexgen | viac3) + basic_machine=i586-pc + ;; + pentiumpro | p6 | 6x86 | athlon | athlon_*) + basic_machine=i686-pc + ;; + pentiumii | pentium2 | pentiumiii | pentium3) + basic_machine=i686-pc + ;; + pentium4) + basic_machine=i786-pc + ;; + pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*) + basic_machine=i586-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + pentiumpro-* | p6-* | 6x86-* | athlon-*) + basic_machine=i686-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*) + basic_machine=i686-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + pentium4-*) + basic_machine=i786-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + pn) + basic_machine=pn-gould + ;; + power) basic_machine=power-ibm + ;; + ppc | ppcbe) basic_machine=powerpc-unknown + ;; + ppc-* | ppcbe-*) + basic_machine=powerpc-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + ppcle | powerpclittle) + basic_machine=powerpcle-unknown + ;; + ppcle-* | powerpclittle-*) + basic_machine=powerpcle-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + ppc64) basic_machine=powerpc64-unknown + ;; + ppc64-*) basic_machine=powerpc64-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + ppc64le | powerpc64little) + basic_machine=powerpc64le-unknown + ;; + ppc64le-* | powerpc64little-*) + basic_machine=powerpc64le-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + ps2) + basic_machine=i386-ibm + ;; + pw32) + basic_machine=i586-unknown + os=-pw32 + ;; + rdos | rdos64) + basic_machine=x86_64-pc + os=-rdos + ;; + rdos32) + basic_machine=i386-pc + os=-rdos + ;; + rom68k) + basic_machine=m68k-rom68k + os=-coff + ;; + rm[46]00) + basic_machine=mips-siemens + ;; + rtpc | rtpc-*) + basic_machine=romp-ibm + ;; + s390) + basic_machine=s390-ibm + ;; + s390-*) + basic_machine=s390-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + s390x) + basic_machine=s390x-ibm + ;; + s390x-*) + basic_machine=s390x-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + sa29200) + basic_machine=a29k-amd + os=-udi + ;; + sb1) + basic_machine=mipsisa64sb1-unknown + ;; + sb1el) + basic_machine=mipsisa64sb1el-unknown + ;; + sde) + basic_machine=mipsisa32-sde + os=-elf + ;; + sei) + basic_machine=mips-sei + os=-seiux + ;; + sequent) + basic_machine=i386-sequent + ;; + sh5el) + basic_machine=sh5le-unknown + ;; + simso-wrs) + basic_machine=sparclite-wrs + os=-vxworks + ;; + sps7) + basic_machine=m68k-bull + os=-sysv2 + ;; + spur) + basic_machine=spur-unknown + ;; + st2000) + basic_machine=m68k-tandem + ;; + stratus) + basic_machine=i860-stratus + os=-sysv4 + ;; + strongarm-* | thumb-*) + basic_machine=arm-`echo "$basic_machine" | sed 's/^[^-]*-//'` + ;; + sun2) + basic_machine=m68000-sun + ;; + sun2os3) + basic_machine=m68000-sun + os=-sunos3 + ;; + sun2os4) + basic_machine=m68000-sun + os=-sunos4 + ;; + sun3os3) + basic_machine=m68k-sun + os=-sunos3 + ;; + sun3os4) + basic_machine=m68k-sun + os=-sunos4 + ;; + sun4os3) + basic_machine=sparc-sun + os=-sunos3 + ;; + sun4os4) + basic_machine=sparc-sun + os=-sunos4 + ;; + sun4sol2) + basic_machine=sparc-sun + os=-solaris2 + ;; + sun3 | sun3-*) + basic_machine=m68k-sun + ;; + sun4) + basic_machine=sparc-sun + ;; + sun386 | sun386i | roadrunner) + basic_machine=i386-sun + ;; + sv1) + basic_machine=sv1-cray + os=-unicos + ;; + symmetry) + basic_machine=i386-sequent + os=-dynix + ;; + t3e) + basic_machine=alphaev5-cray + os=-unicos + ;; + t90) + basic_machine=t90-cray + os=-unicos + ;; + tile*) + basic_machine=$basic_machine-unknown + os=-linux-gnu + ;; + tx39) + basic_machine=mipstx39-unknown + ;; + tx39el) + basic_machine=mipstx39el-unknown + ;; + toad1) + basic_machine=pdp10-xkl + os=-tops20 + ;; + tower | tower-32) + basic_machine=m68k-ncr + ;; + tpf) + basic_machine=s390x-ibm + os=-tpf + ;; + udi29k) + basic_machine=a29k-amd + os=-udi + ;; + ultra3) + basic_machine=a29k-nyu + os=-sym1 + ;; + v810 | necv810) + basic_machine=v810-nec + os=-none + ;; + vaxv) + basic_machine=vax-dec + os=-sysv + ;; + vms) + basic_machine=vax-dec + os=-vms + ;; + vpp*|vx|vx-*) + basic_machine=f301-fujitsu + ;; + vxworks960) + basic_machine=i960-wrs + os=-vxworks + ;; + vxworks68) + basic_machine=m68k-wrs + os=-vxworks + ;; + vxworks29k) + basic_machine=a29k-wrs + os=-vxworks + ;; + w65*) + basic_machine=w65-wdc + os=-none + ;; + w89k-*) + basic_machine=hppa1.1-winbond + os=-proelf + ;; + x64) + basic_machine=x86_64-pc + ;; + xbox) + basic_machine=i686-pc + os=-mingw32 + ;; + xps | xps100) + basic_machine=xps100-honeywell + ;; + xscale-* | xscalee[bl]-*) + basic_machine=`echo "$basic_machine" | sed 's/^xscale/arm/'` + ;; + ymp) + basic_machine=ymp-cray + os=-unicos + ;; + none) + basic_machine=none-none + os=-none + ;; + +# Here we handle the default manufacturer of certain CPU types. It is in +# some cases the only manufacturer, in others, it is the most popular. + w89k) + basic_machine=hppa1.1-winbond + ;; + op50n) + basic_machine=hppa1.1-oki + ;; + op60c) + basic_machine=hppa1.1-oki + ;; + romp) + basic_machine=romp-ibm + ;; + mmix) + basic_machine=mmix-knuth + ;; + rs6000) + basic_machine=rs6000-ibm + ;; + vax) + basic_machine=vax-dec + ;; + pdp11) + basic_machine=pdp11-dec + ;; + we32k) + basic_machine=we32k-att + ;; + sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele) + basic_machine=sh-unknown + ;; + cydra) + basic_machine=cydra-cydrome + ;; + orion) + basic_machine=orion-highlevel + ;; + orion105) + basic_machine=clipper-highlevel + ;; + mac | mpw | mac-mpw) + basic_machine=m68k-apple + ;; + pmac | pmac-mpw) + basic_machine=powerpc-apple + ;; + *-unknown) + # Make sure to match an already-canonicalized machine name. + ;; + *) + echo Invalid configuration \`"$1"\': machine \`"$basic_machine"\' not recognized 1>&2 + exit 1 + ;; +esac + +# Here we canonicalize certain aliases for manufacturers. +case $basic_machine in + *-digital*) + basic_machine=`echo "$basic_machine" | sed 's/digital.*/dec/'` + ;; + *-commodore*) + basic_machine=`echo "$basic_machine" | sed 's/commodore.*/cbm/'` + ;; + *) + ;; +esac + +# Decode manufacturer-specific aliases for certain operating systems. + +if [ x"$os" != x"" ] +then +case $os in + # First match some system type aliases that might get confused + # with valid system types. + # -solaris* is a basic system type, with this one exception. + -auroraux) + os=-auroraux + ;; + -solaris1 | -solaris1.*) + os=`echo $os | sed -e 's|solaris1|sunos4|'` + ;; + -solaris) + os=-solaris2 + ;; + -unixware*) + os=-sysv4.2uw + ;; + -gnu/linux*) + os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'` + ;; + # es1800 is here to avoid being matched by es* (a different OS) + -es1800*) + os=-ose + ;; + # Now accept the basic system types. + # The portable systems comes first. + # Each alternative MUST end in a * to match a version number. + # -sysv* is not here because it comes later, after sysvr4. + -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \ + | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\ + | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \ + | -sym* | -kopensolaris* | -plan9* \ + | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \ + | -aos* | -aros* | -cloudabi* | -sortix* \ + | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \ + | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \ + | -hiux* | -knetbsd* | -mirbsd* | -netbsd* \ + | -bitrig* | -openbsd* | -solidbsd* | -libertybsd* \ + | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \ + | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \ + | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \ + | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* | -hcos* \ + | -chorusos* | -chorusrdb* | -cegcc* | -glidix* \ + | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \ + | -midipix* | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \ + | -linux-newlib* | -linux-musl* | -linux-uclibc* \ + | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \ + | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* \ + | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \ + | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \ + | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \ + | -morphos* | -superux* | -rtmk* | -windiss* \ + | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \ + | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* \ + | -onefs* | -tirtos* | -phoenix* | -fuchsia* | -redox* | -bme* \ + | -midnightbsd*) + # Remember, each alternative MUST END IN *, to match a version number. + ;; + -qnx*) + case $basic_machine in + x86-* | i*86-*) + ;; + *) + os=-nto$os + ;; + esac + ;; + -nto-qnx*) + ;; + -nto*) + os=`echo $os | sed -e 's|nto|nto-qnx|'` + ;; + -sim | -xray | -os68k* | -v88r* \ + | -windows* | -osx | -abug | -netware* | -os9* \ + | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*) + ;; + -mac*) + os=`echo "$os" | sed -e 's|mac|macos|'` + ;; + -linux-dietlibc) + os=-linux-dietlibc + ;; + -linux*) + os=`echo $os | sed -e 's|linux|linux-gnu|'` + ;; + -sunos5*) + os=`echo "$os" | sed -e 's|sunos5|solaris2|'` + ;; + -sunos6*) + os=`echo "$os" | sed -e 's|sunos6|solaris3|'` + ;; + -opened*) + os=-openedition + ;; + -os400*) + os=-os400 + ;; + -wince*) + os=-wince + ;; + -utek*) + os=-bsd + ;; + -dynix*) + os=-bsd + ;; + -acis*) + os=-aos + ;; + -atheos*) + os=-atheos + ;; + -syllable*) + os=-syllable + ;; + -386bsd) + os=-bsd + ;; + -ctix* | -uts*) + os=-sysv + ;; + -nova*) + os=-rtmk-nova + ;; + -ns2) + os=-nextstep2 + ;; + -nsk*) + os=-nsk + ;; + # Preserve the version number of sinix5. + -sinix5.*) + os=`echo $os | sed -e 's|sinix|sysv|'` + ;; + -sinix*) + os=-sysv4 + ;; + -tpf*) + os=-tpf + ;; + -triton*) + os=-sysv3 + ;; + -oss*) + os=-sysv3 + ;; + -svr4*) + os=-sysv4 + ;; + -svr3) + os=-sysv3 + ;; + -sysvr4) + os=-sysv4 + ;; + # This must come after -sysvr4. + -sysv*) + ;; + -ose*) + os=-ose + ;; + -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) + os=-mint + ;; + -zvmoe) + os=-zvmoe + ;; + -dicos*) + os=-dicos + ;; + -pikeos*) + # Until real need of OS specific support for + # particular features comes up, bare metal + # configurations are quite functional. + case $basic_machine in + arm*) + os=-eabi + ;; + *) + os=-elf + ;; + esac + ;; + -nacl*) + ;; + -ios) + ;; + -none) + ;; + *) + # Get rid of the `-' at the beginning of $os. + os=`echo $os | sed 's/[^-]*-//'` + echo Invalid configuration \`"$1"\': system \`"$os"\' not recognized 1>&2 + exit 1 + ;; +esac +else + +# Here we handle the default operating systems that come with various machines. +# The value should be what the vendor currently ships out the door with their +# machine or put another way, the most popular os provided with the machine. + +# Note that if you're going to try to match "-MANUFACTURER" here (say, +# "-sun"), then you have to tell the case statement up towards the top +# that MANUFACTURER isn't an operating system. Otherwise, code above +# will signal an error saying that MANUFACTURER isn't an operating +# system, and we'll never get to this point. + +case $basic_machine in + score-*) + os=-elf + ;; + spu-*) + os=-elf + ;; + *-acorn) + os=-riscix1.2 + ;; + arm*-rebel) + os=-linux + ;; + arm*-semi) + os=-aout + ;; + c4x-* | tic4x-*) + os=-coff + ;; + c8051-*) + os=-elf + ;; + hexagon-*) + os=-elf + ;; + tic54x-*) + os=-coff + ;; + tic55x-*) + os=-coff + ;; + tic6x-*) + os=-coff + ;; + # This must come before the *-dec entry. + pdp10-*) + os=-tops20 + ;; + pdp11-*) + os=-none + ;; + *-dec | vax-*) + os=-ultrix4.2 + ;; + m68*-apollo) + os=-domain + ;; + i386-sun) + os=-sunos4.0.2 + ;; + m68000-sun) + os=-sunos3 + ;; + m68*-cisco) + os=-aout + ;; + mep-*) + os=-elf + ;; + mips*-cisco) + os=-elf + ;; + mips*-*) + os=-elf + ;; + or32-*) + os=-coff + ;; + *-tti) # must be before sparc entry or we get the wrong os. + os=-sysv3 + ;; + sparc-* | *-sun) + os=-sunos4.1.1 + ;; + pru-*) + os=-elf + ;; + *-be) + os=-beos + ;; + *-ibm) + os=-aix + ;; + *-knuth) + os=-mmixware + ;; + *-wec) + os=-proelf + ;; + *-winbond) + os=-proelf + ;; + *-oki) + os=-proelf + ;; + *-hp) + os=-hpux + ;; + *-hitachi) + os=-hiux + ;; + i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent) + os=-sysv + ;; + *-cbm) + os=-amigaos + ;; + *-dg) + os=-dgux + ;; + *-dolphin) + os=-sysv3 + ;; + m68k-ccur) + os=-rtu + ;; + m88k-omron*) + os=-luna + ;; + *-next) + os=-nextstep + ;; + *-sequent) + os=-ptx + ;; + *-crds) + os=-unos + ;; + *-ns) + os=-genix + ;; + i370-*) + os=-mvs + ;; + *-gould) + os=-sysv + ;; + *-highlevel) + os=-bsd + ;; + *-encore) + os=-bsd + ;; + *-sgi) + os=-irix + ;; + *-siemens) + os=-sysv4 + ;; + *-masscomp) + os=-rtu + ;; + f30[01]-fujitsu | f700-fujitsu) + os=-uxpv + ;; + *-rom68k) + os=-coff + ;; + *-*bug) + os=-coff + ;; + *-apple) + os=-macos + ;; + *-atari*) + os=-mint + ;; + *) + os=-none + ;; +esac +fi + +# Here we handle the case where we know the os, and the CPU type, but not the +# manufacturer. We pick the logical manufacturer. +vendor=unknown +case $basic_machine in + *-unknown) + case $os in + -riscix*) + vendor=acorn + ;; + -sunos*) + vendor=sun + ;; + -cnk*|-aix*) + vendor=ibm + ;; + -beos*) + vendor=be + ;; + -hpux*) + vendor=hp + ;; + -mpeix*) + vendor=hp + ;; + -hiux*) + vendor=hitachi + ;; + -unos*) + vendor=crds + ;; + -dgux*) + vendor=dg + ;; + -luna*) + vendor=omron + ;; + -genix*) + vendor=ns + ;; + -mvs* | -opened*) + vendor=ibm + ;; + -os400*) + vendor=ibm + ;; + -ptx*) + vendor=sequent + ;; + -tpf*) + vendor=ibm + ;; + -vxsim* | -vxworks* | -windiss*) + vendor=wrs + ;; + -aux*) + vendor=apple + ;; + -hms*) + vendor=hitachi + ;; + -mpw* | -macos*) + vendor=apple + ;; + -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) + vendor=atari + ;; + -vos*) + vendor=stratus + ;; + esac + basic_machine=`echo "$basic_machine" | sed "s/unknown/$vendor/"` + ;; +esac + +echo "$basic_machine$os" +exit + +# Local variables: +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/config/install-sh b/config/install-sh new file mode 100755 index 00000000..8175c640 --- /dev/null +++ b/config/install-sh @@ -0,0 +1,518 @@ +#!/bin/sh +# install - install a program, script, or datafile + +scriptversion=2018-03-11.20; # UTC + +# This originates from X11R5 (mit/util/scripts/install.sh), which was +# later released in X11R6 (xc/config/util/install.sh) with the +# following copyright and license. +# +# Copyright (C) 1994 X Consortium +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to +# deal in the Software without restriction, including without limitation the +# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +# sell copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- +# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +# +# Except as contained in this notice, the name of the X Consortium shall not +# be used in advertising or otherwise to promote the sale, use or other deal- +# ings in this Software without prior written authorization from the X Consor- +# tium. +# +# +# FSF changes to this file are in the public domain. +# +# Calling this script install-sh is preferred over install.sh, to prevent +# 'make' implicit rules from creating a file called install from it +# when there is no Makefile. +# +# This script is compatible with the BSD install script, but was written +# from scratch. + +tab=' ' +nl=' +' +IFS=" $tab$nl" + +# Set DOITPROG to "echo" to test this script. + +doit=${DOITPROG-} +doit_exec=${doit:-exec} + +# Put in absolute file names if you don't have them in your path; +# or use environment vars. + +chgrpprog=${CHGRPPROG-chgrp} +chmodprog=${CHMODPROG-chmod} +chownprog=${CHOWNPROG-chown} +cmpprog=${CMPPROG-cmp} +cpprog=${CPPROG-cp} +mkdirprog=${MKDIRPROG-mkdir} +mvprog=${MVPROG-mv} +rmprog=${RMPROG-rm} +stripprog=${STRIPPROG-strip} + +posix_mkdir= + +# Desired mode of installed file. +mode=0755 + +chgrpcmd= +chmodcmd=$chmodprog +chowncmd= +mvcmd=$mvprog +rmcmd="$rmprog -f" +stripcmd= + +src= +dst= +dir_arg= +dst_arg= + +copy_on_change=false +is_target_a_directory=possibly + +usage="\ +Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE + or: $0 [OPTION]... SRCFILES... DIRECTORY + or: $0 [OPTION]... -t DIRECTORY SRCFILES... + or: $0 [OPTION]... -d DIRECTORIES... + +In the 1st form, copy SRCFILE to DSTFILE. +In the 2nd and 3rd, copy all SRCFILES to DIRECTORY. +In the 4th, create DIRECTORIES. + +Options: + --help display this help and exit. + --version display version info and exit. + + -c (ignored) + -C install only if different (preserve the last data modification time) + -d create directories instead of installing files. + -g GROUP $chgrpprog installed files to GROUP. + -m MODE $chmodprog installed files to MODE. + -o USER $chownprog installed files to USER. + -s $stripprog installed files. + -t DIRECTORY install into DIRECTORY. + -T report an error if DSTFILE is a directory. + +Environment variables override the default commands: + CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG + RMPROG STRIPPROG +" + +while test $# -ne 0; do + case $1 in + -c) ;; + + -C) copy_on_change=true;; + + -d) dir_arg=true;; + + -g) chgrpcmd="$chgrpprog $2" + shift;; + + --help) echo "$usage"; exit $?;; + + -m) mode=$2 + case $mode in + *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*) + echo "$0: invalid mode: $mode" >&2 + exit 1;; + esac + shift;; + + -o) chowncmd="$chownprog $2" + shift;; + + -s) stripcmd=$stripprog;; + + -t) + is_target_a_directory=always + dst_arg=$2 + # Protect names problematic for 'test' and other utilities. + case $dst_arg in + -* | [=\(\)!]) dst_arg=./$dst_arg;; + esac + shift;; + + -T) is_target_a_directory=never;; + + --version) echo "$0 $scriptversion"; exit $?;; + + --) shift + break;; + + -*) echo "$0: invalid option: $1" >&2 + exit 1;; + + *) break;; + esac + shift +done + +# We allow the use of options -d and -T together, by making -d +# take the precedence; this is for compatibility with GNU install. + +if test -n "$dir_arg"; then + if test -n "$dst_arg"; then + echo "$0: target directory not allowed when installing a directory." >&2 + exit 1 + fi +fi + +if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then + # When -d is used, all remaining arguments are directories to create. + # When -t is used, the destination is already specified. + # Otherwise, the last argument is the destination. Remove it from $@. + for arg + do + if test -n "$dst_arg"; then + # $@ is not empty: it contains at least $arg. + set fnord "$@" "$dst_arg" + shift # fnord + fi + shift # arg + dst_arg=$arg + # Protect names problematic for 'test' and other utilities. + case $dst_arg in + -* | [=\(\)!]) dst_arg=./$dst_arg;; + esac + done +fi + +if test $# -eq 0; then + if test -z "$dir_arg"; then + echo "$0: no input file specified." >&2 + exit 1 + fi + # It's OK to call 'install-sh -d' without argument. + # This can happen when creating conditional directories. + exit 0 +fi + +if test -z "$dir_arg"; then + if test $# -gt 1 || test "$is_target_a_directory" = always; then + if test ! -d "$dst_arg"; then + echo "$0: $dst_arg: Is not a directory." >&2 + exit 1 + fi + fi +fi + +if test -z "$dir_arg"; then + do_exit='(exit $ret); exit $ret' + trap "ret=129; $do_exit" 1 + trap "ret=130; $do_exit" 2 + trap "ret=141; $do_exit" 13 + trap "ret=143; $do_exit" 15 + + # Set umask so as not to create temps with too-generous modes. + # However, 'strip' requires both read and write access to temps. + case $mode in + # Optimize common cases. + *644) cp_umask=133;; + *755) cp_umask=22;; + + *[0-7]) + if test -z "$stripcmd"; then + u_plus_rw= + else + u_plus_rw='% 200' + fi + cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;; + *) + if test -z "$stripcmd"; then + u_plus_rw= + else + u_plus_rw=,u+rw + fi + cp_umask=$mode$u_plus_rw;; + esac +fi + +for src +do + # Protect names problematic for 'test' and other utilities. + case $src in + -* | [=\(\)!]) src=./$src;; + esac + + if test -n "$dir_arg"; then + dst=$src + dstdir=$dst + test -d "$dstdir" + dstdir_status=$? + else + + # Waiting for this to be detected by the "$cpprog $src $dsttmp" command + # might cause directories to be created, which would be especially bad + # if $src (and thus $dsttmp) contains '*'. + if test ! -f "$src" && test ! -d "$src"; then + echo "$0: $src does not exist." >&2 + exit 1 + fi + + if test -z "$dst_arg"; then + echo "$0: no destination specified." >&2 + exit 1 + fi + dst=$dst_arg + + # If destination is a directory, append the input filename. + if test -d "$dst"; then + if test "$is_target_a_directory" = never; then + echo "$0: $dst_arg: Is a directory" >&2 + exit 1 + fi + dstdir=$dst + dstbase=`basename "$src"` + case $dst in + */) dst=$dst$dstbase;; + *) dst=$dst/$dstbase;; + esac + dstdir_status=0 + else + dstdir=`dirname "$dst"` + test -d "$dstdir" + dstdir_status=$? + fi + fi + + case $dstdir in + */) dstdirslash=$dstdir;; + *) dstdirslash=$dstdir/;; + esac + + obsolete_mkdir_used=false + + if test $dstdir_status != 0; then + case $posix_mkdir in + '') + # Create intermediate dirs using mode 755 as modified by the umask. + # This is like FreeBSD 'install' as of 1997-10-28. + umask=`umask` + case $stripcmd.$umask in + # Optimize common cases. + *[2367][2367]) mkdir_umask=$umask;; + .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;; + + *[0-7]) + mkdir_umask=`expr $umask + 22 \ + - $umask % 100 % 40 + $umask % 20 \ + - $umask % 10 % 4 + $umask % 2 + `;; + *) mkdir_umask=$umask,go-w;; + esac + + # With -d, create the new directory with the user-specified mode. + # Otherwise, rely on $mkdir_umask. + if test -n "$dir_arg"; then + mkdir_mode=-m$mode + else + mkdir_mode= + fi + + posix_mkdir=false + case $umask in + *[123567][0-7][0-7]) + # POSIX mkdir -p sets u+wx bits regardless of umask, which + # is incompatible with FreeBSD 'install' when (umask & 300) != 0. + ;; + *) + # Note that $RANDOM variable is not portable (e.g. dash); Use it + # here however when possible just to lower collision chance. + tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$ + + trap 'ret=$?; rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null; exit $ret' 0 + + # Because "mkdir -p" follows existing symlinks and we likely work + # directly in world-writeable /tmp, make sure that the '$tmpdir' + # directory is successfully created first before we actually test + # 'mkdir -p' feature. + if (umask $mkdir_umask && + $mkdirprog $mkdir_mode "$tmpdir" && + exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1 + then + if test -z "$dir_arg" || { + # Check for POSIX incompatibilities with -m. + # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or + # other-writable bit of parent directory when it shouldn't. + # FreeBSD 6.1 mkdir -m -p sets mode of existing directory. + test_tmpdir="$tmpdir/a" + ls_ld_tmpdir=`ls -ld "$test_tmpdir"` + case $ls_ld_tmpdir in + d????-?r-*) different_mode=700;; + d????-?--*) different_mode=755;; + *) false;; + esac && + $mkdirprog -m$different_mode -p -- "$test_tmpdir" && { + ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"` + test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1" + } + } + then posix_mkdir=: + fi + rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" + else + # Remove any dirs left behind by ancient mkdir implementations. + rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null + fi + trap '' 0;; + esac;; + esac + + if + $posix_mkdir && ( + umask $mkdir_umask && + $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir" + ) + then : + else + + # The umask is ridiculous, or mkdir does not conform to POSIX, + # or it failed possibly due to a race condition. Create the + # directory the slow way, step by step, checking for races as we go. + + case $dstdir in + /*) prefix='/';; + [-=\(\)!]*) prefix='./';; + *) prefix='';; + esac + + oIFS=$IFS + IFS=/ + set -f + set fnord $dstdir + shift + set +f + IFS=$oIFS + + prefixes= + + for d + do + test X"$d" = X && continue + + prefix=$prefix$d + if test -d "$prefix"; then + prefixes= + else + if $posix_mkdir; then + (umask=$mkdir_umask && + $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break + # Don't fail if two instances are running concurrently. + test -d "$prefix" || exit 1 + else + case $prefix in + *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;; + *) qprefix=$prefix;; + esac + prefixes="$prefixes '$qprefix'" + fi + fi + prefix=$prefix/ + done + + if test -n "$prefixes"; then + # Don't fail if two instances are running concurrently. + (umask $mkdir_umask && + eval "\$doit_exec \$mkdirprog $prefixes") || + test -d "$dstdir" || exit 1 + obsolete_mkdir_used=true + fi + fi + fi + + if test -n "$dir_arg"; then + { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && + { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || + test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1 + else + + # Make a couple of temp file names in the proper directory. + dsttmp=${dstdirslash}_inst.$$_ + rmtmp=${dstdirslash}_rm.$$_ + + # Trap to clean up those temp files at exit. + trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 + + # Copy the file name to the temp name. + (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") && + + # and set any options; do chmod last to preserve setuid bits. + # + # If any of these fail, we abort the whole thing. If we want to + # ignore errors from any of these, just make sure not to ignore + # errors from the above "$doit $cpprog $src $dsttmp" command. + # + { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } && + { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } && + { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && + + # If -C, don't bother to copy if it wouldn't change the file. + if $copy_on_change && + old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` && + new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` && + set -f && + set X $old && old=:$2:$4:$5:$6 && + set X $new && new=:$2:$4:$5:$6 && + set +f && + test "$old" = "$new" && + $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1 + then + rm -f "$dsttmp" + else + # Rename the file to the real destination. + $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null || + + # The rename failed, perhaps because mv can't rename something else + # to itself, or perhaps because mv is so ancient that it does not + # support -f. + { + # Now remove or move aside any old file at destination location. + # We try this two ways since rm can't unlink itself on some + # systems and the destination file might be busy for other + # reasons. In this case, the final cleanup might fail but the new + # file should still install successfully. + { + test ! -f "$dst" || + $doit $rmcmd -f "$dst" 2>/dev/null || + { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null && + { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; } + } || + { echo "$0: cannot unlink or rename $dst" >&2 + (exit 1); exit 1 + } + } && + + # Now rename the file to the real destination. + $doit $mvcmd "$dsttmp" "$dst" + } + fi || exit 1 + + trap '' 0 + fi +done + +# Local variables: +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC0" +# time-stamp-end: "; # UTC" +# End: diff --git a/configure b/configure new file mode 100755 index 00000000..381ad05a --- /dev/null +++ b/configure @@ -0,0 +1,8189 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69 for btrfs-progs v4.19.1 . +# +# Report bugs to <linux-btrfs@vger.kernel.org>. +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1 +test \$(( 1 + 1 )) = 2 || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org and +$0: linux-btrfs@vger.kernel.org about your system, +$0: including any error possibly output before this +$0: message. Then install a modern shell, or manually run +$0: the script under such a shell if you do have one." + fi + exit 1 +fi +fi +fi +SHELL=${CONFIG_SHELL-/bin/sh} +export SHELL +# Unset more variables known to interfere with behavior of common tools. +CLICOLOR_FORCE= GREP_OPTIONS= +unset CLICOLOR_FORCE GREP_OPTIONS + +## --------------------- ## +## M4sh Shell Functions. ## +## --------------------- ## +# as_fn_unset VAR +# --------------- +# Portably unset VAR. +as_fn_unset () +{ + { eval $1=; unset $1;} +} +as_unset=as_fn_unset + +# as_fn_set_status STATUS +# ----------------------- +# Set $? to STATUS, without forking. +as_fn_set_status () +{ + return $1 +} # as_fn_set_status + +# as_fn_exit STATUS +# ----------------- +# Exit the shell with STATUS, even in a "trap 0" or "set -e" context. +as_fn_exit () +{ + set +e + as_fn_set_status $1 + exit $1 +} # as_fn_exit + +# as_fn_mkdir_p +# ------------- +# Create "$as_dir" as a directory, including parents if necessary. +as_fn_mkdir_p () +{ + + case $as_dir in #( + -*) as_dir=./$as_dir;; + esac + test -d "$as_dir" || eval $as_mkdir_p || { + as_dirs= + while :; do + case $as_dir in #( + *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'( + *) as_qdir=$as_dir;; + esac + as_dirs="'$as_qdir' $as_dirs" + as_dir=`$as_dirname -- "$as_dir" || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + test -d "$as_dir" && break + done + test -z "$as_dirs" || eval "mkdir $as_dirs" + } || test -d "$as_dir" || as_fn_error $? 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McMahon (1931-1989) for sed's syntax. :-) + sed -n ' + p + /[$]LINENO/= + ' <$as_myself | + sed ' + s/[$]LINENO.*/&-/ + t lineno + b + :lineno + N + :loop + s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/ + t loop + s/-\n.*// + ' >$as_me.lineno && + chmod +x "$as_me.lineno" || + { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; } + + # If we had to re-execute with $CONFIG_SHELL, we're ensured to have + # already done that, so ensure we don't try to do so again and fall + # in an infinite loop. This has already happened in practice. + _as_can_reexec=no; export _as_can_reexec + # Don't try to exec as it changes $[0], causing all sort of problems + # (the dirname of $[0] is not the place where we might find the + # original and so on. Autoconf is especially sensitive to this). + . "./$as_me.lineno" + # Exit status is that of the last command. + exit +} + +ECHO_C= ECHO_N= ECHO_T= +case `echo -n x` in #((((( +-n*) + case `echo 'xy\c'` in + *c*) ECHO_T=' ';; # ECHO_T is single tab character. + xy) ECHO_C='\c';; + *) echo `echo ksh88 bug on AIX 6.1` > /dev/null + ECHO_T=' ';; + esac;; +*) + ECHO_N='-n';; +esac + +rm -f conf$$ conf$$.exe conf$$.file +if test -d conf$$.dir; then + rm -f conf$$.dir/conf$$.file +else + rm -f conf$$.dir + mkdir conf$$.dir 2>/dev/null +fi +if (echo >conf$$.file) 2>/dev/null; then + if ln -s conf$$.file conf$$ 2>/dev/null; then + as_ln_s='ln -s' + # ... but there are two gotchas: + # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. + # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. + # In both cases, we have to default to `cp -pR'. + ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || + as_ln_s='cp -pR' + elif ln conf$$.file conf$$ 2>/dev/null; then + as_ln_s=ln + else + as_ln_s='cp -pR' + 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"cannot find install-sh, install.sh, or shtool in config \"$srcdir\"/config" "$LINENO" 5 +fi + +# These three variables are undocumented and unsupported, +# and are intended to be withdrawn in a future Autoconf release. +# They can cause serious problems if a builder's source tree is in a directory +# whose full name contains unusual characters. +ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var. +ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var. +ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var. + + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. +set dummy ${ac_tool_prefix}gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl.exe + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl.exe +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi + + +test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "no acceptable C compiler found in \$PATH +See \`config.log' for more details" "$LINENO" 5; } + +# Provide some information about the compiler. +$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 +set X $ac_compile +ac_compiler=$2 +for ac_option in --version -v -V -qversion; do + { { ac_try="$ac_compiler $ac_option >&5" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compiler $ac_option >&5") 2>conftest.err + ac_status=$? + if test -s conftest.err; then + sed '10a\ +... rest of stderr output deleted ... + 10q' conftest.err >conftest.er1 + cat conftest.er1 >&5 + fi + rm -f conftest.er1 conftest.err + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } +done + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out" +# Try to create an executable without -o first, disregard a.out. +# It will help us diagnose broken compilers, and finding out an intuition +# of exeext. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5 +$as_echo_n "checking whether the C compiler works... " >&6; } +ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'` + +# The possible output files: +ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*" + +ac_rmfiles= +for ac_file in $ac_files +do + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + * ) ac_rmfiles="$ac_rmfiles $ac_file";; + esac +done +rm -f $ac_rmfiles + +if { { ac_try="$ac_link_default" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link_default") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + # Autoconf-2.13 could set the ac_cv_exeext variable to `no'. +# So ignore a value of `no', otherwise this would lead to `EXEEXT = no' +# in a Makefile. We should not override ac_cv_exeext if it was cached, +# so that the user can short-circuit this test for compilers unknown to +# Autoconf. +for ac_file in $ac_files '' +do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) + ;; + [ab].out ) + # We found the default executable, but exeext='' is most + # certainly right. + break;; + *.* ) + if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no; + then :; else + ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + fi + # We set ac_cv_exeext here because the later test for it is not + # safe: cross compilers may not add the suffix if given an `-o' + # argument, so we may need to know it at that point already. + # Even if this section looks crufty: it has the advantage of + # actually working. + break;; + * ) + break;; + esac +done +test "$ac_cv_exeext" = no && ac_cv_exeext= + +else + ac_file='' +fi +if test -z "$ac_file"; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +$as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "C compiler cannot create executables +See \`config.log' for more details" "$LINENO" 5; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5 +$as_echo_n "checking for C compiler default output file name... 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For instance with Cygwin, `ls conftest' will +# work properly (i.e., refer to `conftest.exe'), while it won't with +# `rm'. +for ac_file in conftest.exe conftest conftest.*; do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + break;; + * ) break;; + esac +done +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of executables: cannot compile and link +See \`config.log' for more details" "$LINENO" 5; } +fi +rm -f conftest conftest$ac_cv_exeext +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5 +$as_echo "$ac_cv_exeext" >&6; } + +rm -f conftest.$ac_ext +EXEEXT=$ac_cv_exeext +ac_exeext=$EXEEXT +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <stdio.h> +int +main () +{ +FILE *f = fopen ("conftest.out", "w"); + return ferror (f) || fclose (f) != 0; + + ; + return 0; +} +_ACEOF +ac_clean_files="$ac_clean_files conftest.out" +# Check that the compiler produces executables we can run. If not, either +# the compiler is broken, or we cross compile. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5 +$as_echo_n "checking whether we are cross compiling... " >&6; } +if test "$cross_compiling" != yes; then + { { ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } + if { ac_try='./conftest$ac_cv_exeext' + { { case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + cross_compiling=no + else + if test "$cross_compiling" = maybe; then + cross_compiling=yes + else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot run C compiled programs. +If you meant to cross compile, use \`--host'. +See \`config.log' for more details" "$LINENO" 5; } + fi + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5 +$as_echo "$cross_compiling" >&6; } + +rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out +ac_clean_files=$ac_clean_files_save +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5 +$as_echo_n "checking for suffix of object files... " >&6; } +if ${ac_cv_objext+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.o conftest.obj +if { { ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compile") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + for ac_file in conftest.o conftest.obj conftest.*; do + test -f "$ac_file" || continue; + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;; + *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'` + break;; + esac +done +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of object files: cannot compile +See \`config.log' for more details" "$LINENO" 5; } +fi +rm -f conftest.$ac_cv_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5 +$as_echo "$ac_cv_objext" >&6; } +OBJEXT=$ac_cv_objext +ac_objext=$OBJEXT +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5 +$as_echo_n "checking whether we are using the GNU C compiler... " >&6; } +if ${ac_cv_c_compiler_gnu+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ +#ifndef __GNUC__ + choke me +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_compiler_gnu=yes +else + ac_compiler_gnu=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +ac_cv_c_compiler_gnu=$ac_compiler_gnu + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5 +$as_echo "$ac_cv_c_compiler_gnu" >&6; } +if test $ac_compiler_gnu = yes; then + GCC=yes +else + GCC= +fi +ac_test_CFLAGS=${CFLAGS+set} +ac_save_CFLAGS=$CFLAGS +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5 +$as_echo_n "checking whether $CC accepts -g... 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" >&6; } +if ${ac_cv_prog_cc_c89+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_prog_cc_c89=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <stdarg.h> +#include <stdio.h> +struct stat; +/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */ +struct buf { int x; }; +FILE * (*rcsopen) (struct buf *, struct stat *, int); +static char *e (p, i) + char **p; + int i; +{ + return p[i]; +} +static char *f (char * (*g) (char **, int), char **p, ...) +{ + char *s; + va_list v; + va_start (v,p); + s = g (p, va_arg (v,int)); + va_end (v); + return s; +} + +/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has + function prototypes and stuff, but not '\xHH' hex character constants. + These don't provoke an error unfortunately, instead are silently treated + as 'x'. The following induces an error, until -std is added to get + proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an + array size at least. It's necessary to write '\x00'==0 to get something + that's true only with -std. */ +int osf4_cc_array ['\x00' == 0 ? 1 : -1]; + +/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters + inside strings and character constants. */ +#define FOO(x) 'x' +int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1]; + +int test (int i, double x); +struct s1 {int (*f) (int a);}; +struct s2 {int (*f) (double a);}; +int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); +int argc; +char **argv; +int +main () +{ +return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; + ; + return 0; +} +_ACEOF +for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \ + -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_c89=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext + test "x$ac_cv_prog_cc_c89" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC + +fi +# AC_CACHE_VAL +case "x$ac_cv_prog_cc_c89" in + x) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +$as_echo "none needed" >&6; } ;; + xno) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +$as_echo "unsupported" >&6; } ;; + *) + CC="$CC $ac_cv_prog_cc_c89" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5 +$as_echo "$ac_cv_prog_cc_c89" >&6; } ;; +esac +if test "x$ac_cv_prog_cc_c89" != xno; then : + +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5 +$as_echo_n "checking how to run the C preprocessor... " >&6; } +# On Suns, sometimes $CPP names a directory. +if test -n "$CPP" && test -d "$CPP"; then + CPP= +fi +if test -z "$CPP"; then + if ${ac_cv_prog_CPP+:} false; then : + $as_echo_n "(cached) " >&6 +else + # Double quotes because CPP needs to be expanded + for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp" + do + ac_preproc_ok=false +for ac_c_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since + # <limits.h> exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include <limits.h> +#else +# include <assert.h> +#endif + Syntax error +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <ac_nonexistent.h> +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + break +fi + + done + ac_cv_prog_CPP=$CPP + +fi + CPP=$ac_cv_prog_CPP +else + ac_cv_prog_CPP=$CPP +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5 +$as_echo "$CPP" >&6; } +ac_preproc_ok=false +for ac_c_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since + # <limits.h> exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include <limits.h> +#else +# include <assert.h> +#endif + Syntax error +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <ac_nonexistent.h> +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "C preprocessor \"$CPP\" fails sanity check +See \`config.log' for more details" "$LINENO" 5; } +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5 +$as_echo_n "checking for grep that handles long lines and -e... " >&6; } +if ${ac_cv_path_GREP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -z "$GREP"; then + ac_path_GREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in grep ggrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_GREP" || continue +# Check for GNU ac_path_GREP and select it if it is found. + # Check for GNU $ac_path_GREP +case `"$ac_path_GREP" --version 2>&1` in +*GNU*) + ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'GREP' >> "conftest.nl" + "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_GREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_GREP="$ac_path_GREP" + ac_path_GREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_GREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_GREP"; then + as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_GREP=$GREP +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5 +$as_echo "$ac_cv_path_GREP" >&6; } + GREP="$ac_cv_path_GREP" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5 +$as_echo_n "checking for egrep... " >&6; } +if ${ac_cv_path_EGREP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 + then ac_cv_path_EGREP="$GREP -E" + else + if test -z "$EGREP"; then + ac_path_EGREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in egrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_EGREP" || continue +# Check for GNU ac_path_EGREP and select it if it is found. + # Check for GNU $ac_path_EGREP +case `"$ac_path_EGREP" --version 2>&1` in +*GNU*) + ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'EGREP' >> "conftest.nl" + "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_EGREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_EGREP="$ac_path_EGREP" + ac_path_EGREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_EGREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_EGREP"; then + as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_EGREP=$EGREP +fi + + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 +$as_echo "$ac_cv_path_EGREP" >&6; } + EGREP="$ac_cv_path_EGREP" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 +$as_echo_n "checking for ANSI C header files... " >&6; } +if ${ac_cv_header_stdc+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <float.h> + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_header_stdc=yes +else + ac_cv_header_stdc=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +if test $ac_cv_header_stdc = yes; then + # SunOS 4.x string.h does not declare mem*, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <string.h> + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "memchr" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <stdlib.h> + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "free" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. + if test "$cross_compiling" = yes; then : + : +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <ctype.h> +#include <stdlib.h> +#if ((' ' & 0x0FF) == 0x020) +# define ISLOWER(c) ('a' <= (c) && (c) <= 'z') +# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) +#else +# define ISLOWER(c) \ + (('a' <= (c) && (c) <= 'i') \ + || ('j' <= (c) && (c) <= 'r') \ + || ('s' <= (c) && (c) <= 'z')) +# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) +#endif + +#define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) +int +main () +{ + int i; + for (i = 0; i < 256; i++) + if (XOR (islower (i), ISLOWER (i)) + || toupper (i) != TOUPPER (i)) + return 2; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + +else + ac_cv_header_stdc=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5 +$as_echo "$ac_cv_header_stdc" >&6; } +if test $ac_cv_header_stdc = yes; then + +$as_echo "#define STDC_HEADERS 1" >>confdefs.h + +fi + +# On IRIX 5.3, sys/types and inttypes.h are conflicting. +for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \ + inttypes.h stdint.h unistd.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default +" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + + + + ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default" +if test "x$ac_cv_header_minix_config_h" = xyes; then : + MINIX=yes +else + MINIX= +fi + + + if test "$MINIX" = yes; then + +$as_echo "#define _POSIX_SOURCE 1" >>confdefs.h + + +$as_echo "#define _POSIX_1_SOURCE 2" >>confdefs.h + + +$as_echo "#define _MINIX 1" >>confdefs.h + + fi + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5 +$as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; } +if ${ac_cv_safe_to_define___extensions__+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# define __EXTENSIONS__ 1 + $ac_includes_default +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_safe_to_define___extensions__=yes +else + ac_cv_safe_to_define___extensions__=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5 +$as_echo "$ac_cv_safe_to_define___extensions__" >&6; } + test $ac_cv_safe_to_define___extensions__ = yes && + $as_echo "#define __EXTENSIONS__ 1" >>confdefs.h + + $as_echo "#define _ALL_SOURCE 1" >>confdefs.h + + $as_echo "#define _GNU_SOURCE 1" >>confdefs.h + + $as_echo "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h + + $as_echo "#define _TANDEM_SOURCE 1" >>confdefs.h + + + + + + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. +set dummy ${ac_tool_prefix}gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl.exe + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl.exe +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi + + +test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "no acceptable C compiler found in \$PATH +See \`config.log' for more details" "$LINENO" 5; } + +# Provide some information about the compiler. +$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 +set X $ac_compile +ac_compiler=$2 +for ac_option in --version -v -V -qversion; do + { { ac_try="$ac_compiler $ac_option >&5" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compiler $ac_option >&5") 2>conftest.err + ac_status=$? + if test -s conftest.err; then + sed '10a\ +... rest of stderr output deleted ... + 10q' conftest.err >conftest.er1 + cat conftest.er1 >&5 + fi + rm -f conftest.er1 conftest.err + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } +done + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5 +$as_echo_n "checking whether we are using the GNU C compiler... " >&6; } +if ${ac_cv_c_compiler_gnu+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ +#ifndef __GNUC__ + choke me +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_compiler_gnu=yes +else + ac_compiler_gnu=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +ac_cv_c_compiler_gnu=$ac_compiler_gnu + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5 +$as_echo "$ac_cv_c_compiler_gnu" >&6; } +if test $ac_compiler_gnu = yes; then + GCC=yes +else + GCC= +fi +ac_test_CFLAGS=${CFLAGS+set} +ac_save_CFLAGS=$CFLAGS +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5 +$as_echo_n "checking whether $CC accepts -g... " >&6; } +if ${ac_cv_prog_cc_g+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_save_c_werror_flag=$ac_c_werror_flag + ac_c_werror_flag=yes + ac_cv_prog_cc_g=no + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_g=yes +else + CFLAGS="" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + +else + ac_c_werror_flag=$ac_save_c_werror_flag + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_g=yes +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_c_werror_flag=$ac_save_c_werror_flag +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5 +$as_echo "$ac_cv_prog_cc_g" >&6; } +if test "$ac_test_CFLAGS" = set; then + CFLAGS=$ac_save_CFLAGS +elif test $ac_cv_prog_cc_g = yes; then + if test "$GCC" = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-g" + fi +else + if test "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5 +$as_echo_n "checking for $CC option to accept ISO C89... " >&6; } +if ${ac_cv_prog_cc_c89+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_prog_cc_c89=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <stdarg.h> +#include <stdio.h> +struct stat; +/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */ +struct buf { int x; }; +FILE * (*rcsopen) (struct buf *, struct stat *, int); +static char *e (p, i) + char **p; + int i; +{ + return p[i]; +} +static char *f (char * (*g) (char **, int), char **p, ...) +{ + char *s; + va_list v; + va_start (v,p); + s = g (p, va_arg (v,int)); + va_end (v); + return s; +} + +/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has + function prototypes and stuff, but not '\xHH' hex character constants. + These don't provoke an error unfortunately, instead are silently treated + as 'x'. The following induces an error, until -std is added to get + proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an + array size at least. It's necessary to write '\x00'==0 to get something + that's true only with -std. */ +int osf4_cc_array ['\x00' == 0 ? 1 : -1]; + +/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters + inside strings and character constants. */ +#define FOO(x) 'x' +int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1]; + +int test (int i, double x); +struct s1 {int (*f) (int a);}; +struct s2 {int (*f) (double a);}; +int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); +int argc; +char **argv; +int +main () +{ +return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; + ; + return 0; +} +_ACEOF +for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \ + -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_c89=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext + test "x$ac_cv_prog_cc_c89" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC + +fi +# AC_CACHE_VAL +case "x$ac_cv_prog_cc_c89" in + x) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +$as_echo "none needed" >&6; } ;; + xno) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +$as_echo "unsupported" >&6; } ;; + *) + CC="$CC $ac_cv_prog_cc_c89" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5 +$as_echo "$ac_cv_prog_cc_c89" >&6; } ;; +esac +if test "x$ac_cv_prog_cc_c89" != xno; then : + +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -std=gnu90" >&5 +$as_echo_n "checking whether C compiler accepts -std=gnu90... " >&6; } +if ${ax_cv_check_cflags___std_gnu90+:} false; then : + $as_echo_n "(cached) " >&6 +else + + ax_check_save_flags=$CFLAGS + CFLAGS="$CFLAGS -std=gnu90" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ax_cv_check_cflags___std_gnu90=yes +else + ax_cv_check_cflags___std_gnu90=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + CFLAGS=$ax_check_save_flags +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___std_gnu90" >&5 +$as_echo "$ax_cv_check_cflags___std_gnu90" >&6; } +if test "x$ax_cv_check_cflags___std_gnu90" = xyes; then : + BTRFS_CSTD_FLAGS=-std=gnu90 +else + BTRFS_CSTD_FLAGS=-std=gnu89 +fi + + + + +# Make sure we can run config.sub. +$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 || + as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5 + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5 +$as_echo_n "checking build system type... " >&6; } +if ${ac_cv_build+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_build_alias=$build_alias +test "x$ac_build_alias" = x && + ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"` +test "x$ac_build_alias" = x && + as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5 +ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` || + as_fn_error $? "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5 + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5 +$as_echo "$ac_cv_build" >&6; } +case $ac_cv_build in +*-*-*) ;; +*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;; +esac +build=$ac_cv_build +ac_save_IFS=$IFS; IFS='-' +set x $ac_cv_build +shift +build_cpu=$1 +build_vendor=$2 +shift; shift +# Remember, the first character of IFS is used to create $*, +# except with old shells: +build_os=$* +IFS=$ac_save_IFS +case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5 +$as_echo_n "checking host system type... " >&6; } +if ${ac_cv_host+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test "x$host_alias" = x; then + ac_cv_host=$ac_cv_build +else + ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` || + as_fn_error $? "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5 +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5 +$as_echo "$ac_cv_host" >&6; } +case $ac_cv_host in +*-*-*) ;; +*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;; +esac +host=$ac_cv_host +ac_save_IFS=$IFS; IFS='-' +set x $ac_cv_host +shift +host_cpu=$1 +host_vendor=$2 +shift; shift +# Remember, the first character of IFS is used to create $*, +# except with old shells: +host_os=$* +IFS=$ac_save_IFS +case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5 +$as_echo_n "checking for an ANSI C-conforming const... " >&6; } +if ${ac_cv_c_const+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + +#ifndef __cplusplus + /* Ultrix mips cc rejects this sort of thing. */ + typedef int charset[2]; + const charset cs = { 0, 0 }; + /* SunOS 4.1.1 cc rejects this. */ + char const *const *pcpcc; + char **ppc; + /* NEC SVR4.0.2 mips cc rejects this. */ + struct point {int x, y;}; + static struct point const zero = {0,0}; + /* AIX XL C 1.02.0.0 rejects this. + It does not let you subtract one const X* pointer from another in + an arm of an if-expression whose if-part is not a constant + expression */ + const char *g = "string"; + pcpcc = &g + (g ? g-g : 0); + /* HPUX 7.0 cc rejects these. */ + ++pcpcc; + ppc = (char**) pcpcc; + pcpcc = (char const *const *) ppc; + { /* SCO 3.2v4 cc rejects this sort of thing. */ + char tx; + char *t = &tx; + char const *s = 0 ? (char *) 0 : (char const *) 0; + + *t++ = 0; + if (s) return 0; + } + { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */ + int x[] = {25, 17}; + const int *foo = &x[0]; + ++foo; + } + { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */ + typedef const int *iptr; + iptr p = 0; + ++p; + } + { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying + "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */ + struct s { int j; const int *ap[3]; } bx; + struct s *b = &bx; b->j = 5; + } + { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */ + const int foo = 10; + if (!foo) return 0; + } + return !cs[0] && !zero.x; +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_c_const=yes +else + ac_cv_c_const=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5 +$as_echo "$ac_cv_c_const" >&6; } +if test $ac_cv_c_const = no; then + +$as_echo "#define const /**/" >>confdefs.h + +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working volatile" >&5 +$as_echo_n "checking for working volatile... " >&6; } +if ${ac_cv_c_volatile+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + +volatile int x; +int * volatile y = (int *) 0; +return !x && !y; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_c_volatile=yes +else + ac_cv_c_volatile=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_volatile" >&5 +$as_echo "$ac_cv_c_volatile" >&6; } +if test $ac_cv_c_volatile = no; then + +$as_echo "#define volatile /**/" >>confdefs.h + +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5 +$as_echo_n "checking whether byte ordering is bigendian... " >&6; } +if ${ac_cv_c_bigendian+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_c_bigendian=unknown + # See if we're dealing with a universal compiler. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifndef __APPLE_CC__ + not a universal capable compiler + #endif + typedef int dummy; + +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + # Check for potential -arch flags. It is not universal unless + # there are at least two -arch flags with different values. + ac_arch= + ac_prev= + for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do + if test -n "$ac_prev"; then + case $ac_word in + i?86 | x86_64 | ppc | ppc64) + if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then + ac_arch=$ac_word + else + ac_cv_c_bigendian=universal + break + fi + ;; + esac + ac_prev= + elif test "x$ac_word" = "x-arch"; then + ac_prev=arch + fi + done +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + if test $ac_cv_c_bigendian = unknown; then + # See if sys/param.h defines the BYTE_ORDER macro. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <sys/types.h> + #include <sys/param.h> + +int +main () +{ +#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \ + && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \ + && LITTLE_ENDIAN) + bogus endian macros + #endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + # It does; now see whether it defined to BIG_ENDIAN or not. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <sys/types.h> + #include <sys/param.h> + +int +main () +{ +#if BYTE_ORDER != BIG_ENDIAN + not big endian + #endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_c_bigendian=yes +else + ac_cv_c_bigendian=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + fi + if test $ac_cv_c_bigendian = unknown; then + # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris). + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <limits.h> + +int +main () +{ +#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN) + bogus endian macros + #endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + # It does; now see whether it defined to _BIG_ENDIAN or not. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <limits.h> + +int +main () +{ +#ifndef _BIG_ENDIAN + not big endian + #endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_c_bigendian=yes +else + ac_cv_c_bigendian=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + fi + if test $ac_cv_c_bigendian = unknown; then + # Compile a test program. + if test "$cross_compiling" = yes; then : + # Try to guess by grepping values from an object file. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +short int ascii_mm[] = + { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 }; + short int ascii_ii[] = + { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 }; + int use_ascii (int i) { + return ascii_mm[i] + ascii_ii[i]; + } + short int ebcdic_ii[] = + { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 }; + short int ebcdic_mm[] = + { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 }; + int use_ebcdic (int i) { + return ebcdic_mm[i] + ebcdic_ii[i]; + } + extern int foo; + +int +main () +{ +return use_ascii (foo) == use_ebcdic (foo); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then + ac_cv_c_bigendian=yes + fi + if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then + if test "$ac_cv_c_bigendian" = unknown; then + ac_cv_c_bigendian=no + else + # finding both strings is unlikely to happen, but who knows? + ac_cv_c_bigendian=unknown + fi + fi +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$ac_includes_default +int +main () +{ + + /* Are we little or big endian? From Harbison&Steele. */ + union + { + long int l; + char c[sizeof (long int)]; + } u; + u.l = 1; + return u.c[sizeof (long int) - 1] == 1; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + ac_cv_c_bigendian=no +else + ac_cv_c_bigendian=yes +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5 +$as_echo "$ac_cv_c_bigendian" >&6; } + case $ac_cv_c_bigendian in #( + yes) + $as_echo "#define WORDS_BIGENDIAN 1" >>confdefs.h +;; #( + no) + ;; #( + universal) + +$as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h + + ;; #( + *) + as_fn_error $? "unknown endianness + presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;; + esac + + +# Check whether --enable-largefile was given. +if test "${enable_largefile+set}" = set; then : + enableval=$enable_largefile; +fi + +if test "$enable_largefile" != no; then + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for special C compiler options needed for large files" >&5 +$as_echo_n "checking for special C compiler options needed for large files... " >&6; } +if ${ac_cv_sys_largefile_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_cv_sys_largefile_CC=no + if test "$GCC" != yes; then + ac_save_CC=$CC + while :; do + # IRIX 6.2 and later do not support large files by default, + # so use the C compiler's -n32 option if that helps. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <sys/types.h> + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF + if ac_fn_c_try_compile "$LINENO"; then : + break +fi +rm -f core conftest.err conftest.$ac_objext + CC="$CC -n32" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_largefile_CC=' -n32'; break +fi +rm -f core conftest.err conftest.$ac_objext + break + done + CC=$ac_save_CC + rm -f conftest.$ac_ext + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_CC" >&5 +$as_echo "$ac_cv_sys_largefile_CC" >&6; } + if test "$ac_cv_sys_largefile_CC" != no; then + CC=$CC$ac_cv_sys_largefile_CC + fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FILE_OFFSET_BITS value needed for large files" >&5 +$as_echo_n "checking for _FILE_OFFSET_BITS value needed for large files... " >&6; } +if ${ac_cv_sys_file_offset_bits+:} false; then : + $as_echo_n "(cached) " >&6 +else + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <sys/types.h> + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_file_offset_bits=no; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#define _FILE_OFFSET_BITS 64 +#include <sys/types.h> + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_file_offset_bits=64; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_cv_sys_file_offset_bits=unknown + break +done +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_file_offset_bits" >&5 +$as_echo "$ac_cv_sys_file_offset_bits" >&6; } +case $ac_cv_sys_file_offset_bits in #( + no | unknown) ;; + *) +cat >>confdefs.h <<_ACEOF +#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits +_ACEOF +;; +esac +rm -rf conftest* + if test $ac_cv_sys_file_offset_bits = unknown; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGE_FILES value needed for large files" >&5 +$as_echo_n "checking for _LARGE_FILES value needed for large files... " >&6; } +if ${ac_cv_sys_large_files+:} false; then : + $as_echo_n "(cached) " >&6 +else + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <sys/types.h> + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_large_files=no; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#define _LARGE_FILES 1 +#include <sys/types.h> + /* Check that off_t can represent 2**63 - 1 correctly. + We can't simply define LARGE_OFF_T to be 9223372036854775807, + since some C++ compilers masquerading as C compilers + incorrectly reject 9223372036854775807. */ +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 + && LARGE_OFF_T % 2147483647 == 1) + ? 1 : -1]; +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_sys_large_files=1; break +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_cv_sys_large_files=unknown + break +done +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_large_files" >&5 +$as_echo "$ac_cv_sys_large_files" >&6; } +case $ac_cv_sys_large_files in #( + no | unknown) ;; + *) +cat >>confdefs.h <<_ACEOF +#define _LARGE_FILES $ac_cv_sys_large_files +_ACEOF +;; +esac +rm -rf conftest* + fi + + +fi + + +# Find a good install program. We prefer a C program (faster), +# so one script is as good as another. But avoid the broken or +# incompatible versions: +# SysV /etc/install, /usr/sbin/install +# SunOS /usr/etc/install +# IRIX /sbin/install +# AIX /bin/install +# AmigaOS /C/install, which installs bootblocks on floppy discs +# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag +# AFS /usr/afsws/bin/install, which mishandles nonexistent args +# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" +# OS/2's system install, which has a completely different semantic +# ./install, which can be erroneously created by make from ./install.sh. +# Reject install programs that cannot install multiple files. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5 +$as_echo_n "checking for a BSD-compatible install... " >&6; } +if test -z "$INSTALL"; then +if ${ac_cv_path_install+:} false; then : + $as_echo_n "(cached) " >&6 +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + # Account for people who put trailing slashes in PATH elements. +case $as_dir/ in #(( + ./ | .// | /[cC]/* | \ + /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \ + ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \ + /usr/ucb/* ) ;; + *) + # OSF1 and SCO ODT 3.0 have their own names for install. + # Don't use installbsd from OSF since it installs stuff as root + # by default. + for ac_prog in ginstall scoinst install; do + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then + if test $ac_prog = install && + grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # AIX install. It has an incompatible calling convention. + : + elif test $ac_prog = install && + grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # program-specific install script used by HP pwplus--don't use. + : + else + rm -rf conftest.one conftest.two conftest.dir + echo one > conftest.one + echo two > conftest.two + mkdir conftest.dir + if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" && + test -s conftest.one && test -s conftest.two && + test -s conftest.dir/conftest.one && + test -s conftest.dir/conftest.two + then + ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c" + break 3 + fi + fi + fi + done + done + ;; +esac + + done +IFS=$as_save_IFS + +rm -rf conftest.one conftest.two conftest.dir + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL=$ac_cv_path_install + else + # As a last resort, use the slow shell script. Don't cache a + # value for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + INSTALL=$ac_install_sh + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5 +$as_echo "$INSTALL" >&6; } + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5 +$as_echo_n "checking whether ln -s works... " >&6; } +LN_S=$as_ln_s +if test "$LN_S" = "ln -s"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5 +$as_echo "no, using $LN_S" >&6; } +fi + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args. +set dummy ${ac_tool_prefix}ar; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_AR+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$AR"; then + ac_cv_prog_AR="$AR" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_AR="${ac_tool_prefix}ar" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +AR=$ac_cv_prog_AR +if test -n "$AR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5 +$as_echo "$AR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_AR"; then + ac_ct_AR=$AR + # Extract the first word of "ar", so it can be a program name with args. +set dummy ar; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_AR+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_AR"; then + ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_AR="ar" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_AR=$ac_cv_prog_ac_ct_AR +if test -n "$ac_ct_AR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5 +$as_echo "$ac_ct_AR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_AR" = x; then + AR="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + AR=$ac_ct_AR + fi +else + AR="$ac_cv_prog_AR" +fi + +# Extract the first word of "rm", so it can be a program name with args. +set dummy rm; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_RM+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $RM in + [\\/]* | ?:[\\/]*) + ac_cv_path_RM="$RM" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_RM="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + test -z "$ac_cv_path_RM" && ac_cv_path_RM="rm" + ;; +esac +fi +RM=$ac_cv_path_RM +if test -n "$RM"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RM" >&5 +$as_echo "$RM" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +# Extract the first word of "rmdir", so it can be a program name with args. +set dummy rmdir; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_RMDIR+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $RMDIR in + [\\/]* | ?:[\\/]*) + ac_cv_path_RMDIR="$RMDIR" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_RMDIR="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + test -z "$ac_cv_path_RMDIR" && ac_cv_path_RMDIR="rmdir" + ;; +esac +fi +RMDIR=$ac_cv_path_RMDIR +if test -n "$RMDIR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RMDIR" >&5 +$as_echo "$RMDIR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + + +for ac_func in openat +do : + ac_fn_c_check_func "$LINENO" "openat" "ac_cv_func_openat" +if test "x$ac_cv_func_openat" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_OPENAT 1 +_ACEOF + +else + as_fn_error $? "cannot find openat() function" "$LINENO" 5 +fi +done + + +for ac_func in reallocarray +do : + ac_fn_c_check_func "$LINENO" "reallocarray" "ac_cv_func_reallocarray" +if test "x$ac_cv_func_reallocarray" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_REALLOCARRAY 1 +_ACEOF + +fi +done + + + + + + + + + + +if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args. +set dummy ${ac_tool_prefix}pkg-config; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_PKG_CONFIG+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $PKG_CONFIG in + [\\/]* | ?:[\\/]*) + ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +PKG_CONFIG=$ac_cv_path_PKG_CONFIG +if test -n "$PKG_CONFIG"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5 +$as_echo "$PKG_CONFIG" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_path_PKG_CONFIG"; then + ac_pt_PKG_CONFIG=$PKG_CONFIG + # Extract the first word of "pkg-config", so it can be a program name with args. +set dummy pkg-config; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_ac_pt_PKG_CONFIG+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $ac_pt_PKG_CONFIG in + [\\/]* | ?:[\\/]*) + ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG +if test -n "$ac_pt_PKG_CONFIG"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5 +$as_echo "$ac_pt_PKG_CONFIG" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_pt_PKG_CONFIG" = x; then + PKG_CONFIG="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + PKG_CONFIG=$ac_pt_PKG_CONFIG + fi +else + PKG_CONFIG="$ac_cv_path_PKG_CONFIG" +fi + +fi +if test -n "$PKG_CONFIG"; then + _pkg_min_version=0.9.0 + { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5 +$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; } + if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + PKG_CONFIG="" + fi +fi + + + + + +# Check whether --enable-backtrace was given. +if test "${enable_backtrace+set}" = set; then : + enableval=$enable_backtrace; +else + enable_backtrace=yes + +fi + + +if test "x$enable_backtrace" = xno; then : + + +$as_echo "#define BTRFS_DISABLE_BACKTRACE 1" >>confdefs.h + + +fi + +if test "x$enable_backtrace" = xyes; then + for ac_header in execinfo.h +do : + ac_fn_c_check_header_mongrel "$LINENO" "execinfo.h" "ac_cv_header_execinfo_h" "$ac_includes_default" +if test "x$ac_cv_header_execinfo_h" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_EXECINFO_H 1 +_ACEOF + +fi + +done + + for ac_func in backtrace backtrace_symbols_fd +do : + as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` +ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" +if eval test \"x\$"$as_ac_var"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1 +_ACEOF + +else + as_fn_error $? "standard library does not have backtrace support" "$LINENO" 5 +fi +done + +fi + + +# Check whether --enable-documentation was given. +if test "${enable_documentation+set}" = set; then : + enableval=$enable_documentation; +else + enable_documentation=yes + +fi + +if test "x$enable_documentation" = xyes; then : + DISABLE_DOCUMENTATION=0 +else + DISABLE_DOCUMENTATION=1 +fi + + +ASCIIDOC_TOOL="none" +if test "x$enable_documentation" = xyes; then + # Extract the first word of "xmlto", so it can be a program name with args. +set dummy xmlto; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_XMLTO+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $XMLTO in + [\\/]* | ?:[\\/]*) + ac_cv_path_XMLTO="$XMLTO" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_XMLTO="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +XMLTO=$ac_cv_path_XMLTO +if test -n "$XMLTO"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $XMLTO" >&5 +$as_echo "$XMLTO" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if test -z "$XMLTO"; then + as_fn_error $? "cannot find xmlto, cannot build documentation" "$LINENO" 5 + fi + + # Extract the first word of "mv", so it can be a program name with args. +set dummy mv; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_MV+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $MV in + [\\/]* | ?:[\\/]*) + ac_cv_path_MV="$MV" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_MV="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + test -z "$ac_cv_path_MV" && ac_cv_path_MV="mv" + ;; +esac +fi +MV=$ac_cv_path_MV +if test -n "$MV"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MV" >&5 +$as_echo "$MV" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5 +$as_echo_n "checking for a sed that does not truncate output... " >&6; } +if ${ac_cv_path_SED+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ + for ac_i in 1 2 3 4 5 6 7; do + ac_script="$ac_script$as_nl$ac_script" + done + echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed + { ac_script=; unset ac_script;} + if test -z "$SED"; then + ac_path_SED_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in sed gsed; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_SED="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_SED" || continue +# Check for GNU ac_path_SED and select it if it is found. + # Check for GNU $ac_path_SED +case `"$ac_path_SED" --version 2>&1` in +*GNU*) + ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo '' >> "conftest.nl" + "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_SED_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_SED="$ac_path_SED" + ac_path_SED_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_SED_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_SED"; then + as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5 + fi +else + ac_cv_path_SED=$SED +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5 +$as_echo "$ac_cv_path_SED" >&6; } + SED="$ac_cv_path_SED" + rm -f conftest.sed + + # Extract the first word of "asciidoc", so it can be a program name with args. +set dummy asciidoc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_ASCIIDOC+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $ASCIIDOC in + [\\/]* | ?:[\\/]*) + ac_cv_path_ASCIIDOC="$ASCIIDOC" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_ASCIIDOC="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +ASCIIDOC=$ac_cv_path_ASCIIDOC +if test -n "$ASCIIDOC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ASCIIDOC" >&5 +$as_echo "$ASCIIDOC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + # Extract the first word of "asciidoctor", so it can be a program name with args. +set dummy asciidoctor; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_ASCIIDOCTOR+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $ASCIIDOCTOR in + [\\/]* | ?:[\\/]*) + ac_cv_path_ASCIIDOCTOR="$ASCIIDOCTOR" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_ASCIIDOCTOR="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +ASCIIDOCTOR=$ac_cv_path_ASCIIDOCTOR +if test -n "$ASCIIDOCTOR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ASCIIDOCTOR" >&5 +$as_echo "$ASCIIDOCTOR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + + if test -n "$ASCIIDOC"; then + ASCIIDOC_TOOL="asciidoc" + else + if test -n "$ASCIIDOCTOR"; then + ASCIIDOC_TOOL="asciidoctor" + else + as_fn_error $? "cannot find asciidoc or asciidoctor, cannot build documentation" "$LINENO" 5 + fi + fi +fi + + +# Check whether --enable-programs was given. +if test "${enable_programs+set}" = set; then : + enableval=$enable_programs; +else + enable_programs=yes + +fi + +if test "x$enable_programs" = xyes; then : + BUILD_PROGRAMS=1 +else + BUILD_PROGRAMS=0 +fi + + +# Check whether --enable-shared was given. +if test "${enable_shared+set}" = set; then : + enableval=$enable_shared; +else + enable_shared=yes + +fi + +if test "x$enable_shared" = xyes; then : + BUILD_SHARED_LIBRARIES=1 +else + BUILD_SHARED_LIBRARIES=0 +fi + + +# Check whether --enable-static was given. +if test "${enable_static+set}" = set; then : + enableval=$enable_static; +else + enable_static=yes + +fi + +if test "x$enable_static" = xyes; then : + BUILD_STATIC_LIBRARIES=1 +else + BUILD_STATIC_LIBRARIES=0 +fi + + +# Check whether --enable-convert was given. +if test "${enable_convert+set}" = set; then : + enableval=$enable_convert; +else + enable_convert=$enable_programs + +fi + + +if test "x$enable_convert" = xyes; then : + DISABLE_BTRFSCONVERT=0 +else + DISABLE_BTRFSCONVERT=1 +fi + + + +# Check whether --with-convert was given. +if test "${with_convert+set}" = set; then : + withval=$with_convert; +else + with_convert=auto + +fi + + +if test "$with_convert" = "yes"; then + with_convert=auto +fi + +if test "$with_convert" = "no"; then + with_convert= +fi + +convertfs= +BTRFSCONVERT_EXT2=0 +BTRFSCONVERT_REISERFS=0 +if test "x$enable_convert" = xyes; then + if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ext2fs" >&5 +$as_echo_n "checking for ext2fs... " >&6; } + +if test -n "$EXT2FS_CFLAGS"; then + pkg_cv_EXT2FS_CFLAGS="$EXT2FS_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ext2fs\""; } >&5 + ($PKG_CONFIG --exists --print-errors "ext2fs") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_EXT2FS_CFLAGS=`$PKG_CONFIG --cflags "ext2fs" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$EXT2FS_LIBS"; then + pkg_cv_EXT2FS_LIBS="$EXT2FS_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ext2fs\""; } >&5 + ($PKG_CONFIG --exists --print-errors "ext2fs") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_EXT2FS_LIBS=`$PKG_CONFIG --libs "ext2fs" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + EXT2FS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "ext2fs" 2>&1` + else + EXT2FS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "ext2fs" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$EXT2FS_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (ext2fs) were not met: + +$EXT2FS_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables EXT2FS_CFLAGS +and EXT2FS_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables EXT2FS_CFLAGS +and EXT2FS_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + EXT2FS_CFLAGS=$pkg_cv_EXT2FS_CFLAGS + EXT2FS_LIBS=$pkg_cv_EXT2FS_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for com_err" >&5 +$as_echo_n "checking for com_err... " >&6; } + +if test -n "$COM_ERR_CFLAGS"; then + pkg_cv_COM_ERR_CFLAGS="$COM_ERR_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"com_err\""; } >&5 + ($PKG_CONFIG --exists --print-errors "com_err") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_COM_ERR_CFLAGS=`$PKG_CONFIG --cflags "com_err" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$COM_ERR_LIBS"; then + pkg_cv_COM_ERR_LIBS="$COM_ERR_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"com_err\""; } >&5 + ($PKG_CONFIG --exists --print-errors "com_err") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_COM_ERR_LIBS=`$PKG_CONFIG --libs "com_err" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + COM_ERR_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "com_err" 2>&1` + else + COM_ERR_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "com_err" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$COM_ERR_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (com_err) were not met: + +$COM_ERR_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables COM_ERR_CFLAGS +and COM_ERR_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables COM_ERR_CFLAGS +and COM_ERR_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + COM_ERR_CFLAGS=$pkg_cv_COM_ERR_CFLAGS + COM_ERR_LIBS=$pkg_cv_COM_ERR_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi + convertfs="${convertfs:+$convertfs,}ext2" + BTRFSCONVERT_EXT2=1 + fi + if test "x$with_convert" = "xauto"; then + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for reiserfscore >= 3.6.27" >&5 +$as_echo_n "checking for reiserfscore >= 3.6.27... " >&6; } + +if test -n "$REISERFS_CFLAGS"; then + pkg_cv_REISERFS_CFLAGS="$REISERFS_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"reiserfscore >= 3.6.27\""; } >&5 + ($PKG_CONFIG --exists --print-errors "reiserfscore >= 3.6.27") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_REISERFS_CFLAGS=`$PKG_CONFIG --cflags "reiserfscore >= 3.6.27" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$REISERFS_LIBS"; then + pkg_cv_REISERFS_LIBS="$REISERFS_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"reiserfscore >= 3.6.27\""; } >&5 + ($PKG_CONFIG --exists --print-errors "reiserfscore >= 3.6.27") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_REISERFS_LIBS=`$PKG_CONFIG --libs "reiserfscore >= 3.6.27" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + REISERFS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "reiserfscore >= 3.6.27" 2>&1` + else + REISERFS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "reiserfscore >= 3.6.27" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$REISERFS_PKG_ERRORS" >&5 + + BTRFSCONVERT_REISERFS=0 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + BTRFSCONVERT_REISERFS=0 +else + REISERFS_CFLAGS=$pkg_cv_REISERFS_CFLAGS + REISERFS_LIBS=$pkg_cv_REISERFS_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + BTRFSCONVERT_REISERFS=1 +fi + elif echo "$with_convert" | grep -q "reiserfs"; then + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for reiserfscore >= 3.6.27" >&5 +$as_echo_n "checking for reiserfscore >= 3.6.27... " >&6; } + +if test -n "$REISERFS_CFLAGS"; then + pkg_cv_REISERFS_CFLAGS="$REISERFS_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"reiserfscore >= 3.6.27\""; } >&5 + ($PKG_CONFIG --exists --print-errors "reiserfscore >= 3.6.27") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_REISERFS_CFLAGS=`$PKG_CONFIG --cflags "reiserfscore >= 3.6.27" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$REISERFS_LIBS"; then + pkg_cv_REISERFS_LIBS="$REISERFS_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"reiserfscore >= 3.6.27\""; } >&5 + ($PKG_CONFIG --exists --print-errors "reiserfscore >= 3.6.27") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_REISERFS_LIBS=`$PKG_CONFIG --libs "reiserfscore >= 3.6.27" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + REISERFS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "reiserfscore >= 3.6.27" 2>&1` + else + REISERFS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "reiserfscore >= 3.6.27" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$REISERFS_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (reiserfscore >= 3.6.27) were not met: + +$REISERFS_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables REISERFS_CFLAGS +and REISERFS_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables REISERFS_CFLAGS +and REISERFS_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + REISERFS_CFLAGS=$pkg_cv_REISERFS_CFLAGS + REISERFS_LIBS=$pkg_cv_REISERFS_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + BTRFSCONVERT_REISERFS=1 +fi + fi + if test "$BTRFSCONVERT_REISERFS" = 1; then + convertfs="${convertfs:+$convertfs,}reiserfs" + fi +fi + + + +# catch typos +tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/reiserfs//' | sed -e 's/,\+//') +if ! test "x$tmp" = "x"; then + as_fn_error $? "unknown tokens for --with-convert: $tmp" "$LINENO" 5 +fi + +if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then + as_fn_error $? "no filesystems for convert, use --disable-convert instead" "$LINENO" 5 +fi + +HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0 + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for FIEMAP_EXTENT_SHARED defined in linux/fiemap.h" >&5 +$as_echo_n "checking for FIEMAP_EXTENT_SHARED defined in linux/fiemap.h... " >&6; } +if ${ac_cv_defined_FIEMAP_EXTENT_SHARED_linux_fiemap_h+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <linux/fiemap.h> +int +main () +{ + + #ifdef FIEMAP_EXTENT_SHARED + int ok; + #else + choke me + #endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_defined_FIEMAP_EXTENT_SHARED_linux_fiemap_h=yes +else + ac_cv_defined_FIEMAP_EXTENT_SHARED_linux_fiemap_h=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_defined_FIEMAP_EXTENT_SHARED_linux_fiemap_h" >&5 +$as_echo "$ac_cv_defined_FIEMAP_EXTENT_SHARED_linux_fiemap_h" >&6; } +if test $ac_cv_defined_FIEMAP_EXTENT_SHARED_linux_fiemap_h != "no"; then : + +else + HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1 + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers" >&5 +$as_echo "$as_me: WARNING: no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers" >&2;} +fi + +if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then + +$as_echo "#define HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE 1" >>confdefs.h + +else + +$as_echo "#define HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE 0" >>confdefs.h + +fi + + + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for blkid" >&5 +$as_echo_n "checking for blkid... " >&6; } + +if test -n "$BLKID_CFLAGS"; then + pkg_cv_BLKID_CFLAGS="$BLKID_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"blkid\""; } >&5 + ($PKG_CONFIG --exists --print-errors "blkid") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_BLKID_CFLAGS=`$PKG_CONFIG --cflags "blkid" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$BLKID_LIBS"; then + pkg_cv_BLKID_LIBS="$BLKID_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"blkid\""; } >&5 + ($PKG_CONFIG --exists --print-errors "blkid") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_BLKID_LIBS=`$PKG_CONFIG --libs "blkid" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + BLKID_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "blkid" 2>&1` + else + BLKID_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "blkid" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$BLKID_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (blkid) were not met: + +$BLKID_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables BLKID_CFLAGS +and BLKID_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables BLKID_CFLAGS +and BLKID_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + BLKID_CFLAGS=$pkg_cv_BLKID_CFLAGS + BLKID_LIBS=$pkg_cv_BLKID_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi + + if { { $as_echo "$as_me:${as_lineno-$LINENO}: \${PKG_CONFIG} --exists --print-errors \"blkid\""; } >&5 + (${PKG_CONFIG} --exists --print-errors "blkid") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + BLKID_LIBS_STATIC=`${PKG_CONFIG} --libs --static "blkid"` + + else + as_fn_error $? "pkg-config description of blkid, needed for static build, is not available" "$LINENO" 5 + fi + + + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid" >&5 +$as_echo_n "checking for uuid... " >&6; } + +if test -n "$UUID_CFLAGS"; then + pkg_cv_UUID_CFLAGS="$UUID_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"uuid\""; } >&5 + ($PKG_CONFIG --exists --print-errors "uuid") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_UUID_CFLAGS=`$PKG_CONFIG --cflags "uuid" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$UUID_LIBS"; then + pkg_cv_UUID_LIBS="$UUID_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"uuid\""; } >&5 + ($PKG_CONFIG --exists --print-errors "uuid") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_UUID_LIBS=`$PKG_CONFIG --libs "uuid" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + UUID_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "uuid" 2>&1` + else + UUID_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "uuid" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$UUID_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (uuid) were not met: + +$UUID_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables UUID_CFLAGS +and UUID_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables UUID_CFLAGS +and UUID_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + UUID_CFLAGS=$pkg_cv_UUID_CFLAGS + UUID_LIBS=$pkg_cv_UUID_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi + + if { { $as_echo "$as_me:${as_lineno-$LINENO}: \${PKG_CONFIG} --exists --print-errors \"uuid\""; } >&5 + (${PKG_CONFIG} --exists --print-errors "uuid") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + UUID_LIBS_STATIC=`${PKG_CONFIG} --libs --static "uuid"` + + else + as_fn_error $? "pkg-config description of uuid, needed for static build, is not available" "$LINENO" 5 + fi + + + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for zlib" >&5 +$as_echo_n "checking for zlib... " >&6; } + +if test -n "$ZLIB_CFLAGS"; then + pkg_cv_ZLIB_CFLAGS="$ZLIB_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"zlib\""; } >&5 + ($PKG_CONFIG --exists --print-errors "zlib") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_ZLIB_CFLAGS=`$PKG_CONFIG --cflags "zlib" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$ZLIB_LIBS"; then + pkg_cv_ZLIB_LIBS="$ZLIB_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"zlib\""; } >&5 + ($PKG_CONFIG --exists --print-errors "zlib") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_ZLIB_LIBS=`$PKG_CONFIG --libs "zlib" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + ZLIB_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "zlib" 2>&1` + else + ZLIB_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "zlib" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$ZLIB_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (zlib) were not met: + +$ZLIB_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables ZLIB_CFLAGS +and ZLIB_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables ZLIB_CFLAGS +and ZLIB_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + ZLIB_CFLAGS=$pkg_cv_ZLIB_CFLAGS + ZLIB_LIBS=$pkg_cv_ZLIB_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi + + if { { $as_echo "$as_me:${as_lineno-$LINENO}: \${PKG_CONFIG} --exists --print-errors \"zlib\""; } >&5 + (${PKG_CONFIG} --exists --print-errors "zlib") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + ZLIB_LIBS_STATIC=`${PKG_CONFIG} --libs --static "zlib"` + + else + as_fn_error $? "pkg-config description of zlib, needed for static build, is not available" "$LINENO" 5 + fi + + +# Check whether --enable-zstd was given. +if test "${enable_zstd+set}" = set; then : + enableval=$enable_zstd; +else + enable_zstd=yes + +fi + + +if test "x$enable_zstd" = xyes; then + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for libzstd >= 1.0.0" >&5 +$as_echo_n "checking for libzstd >= 1.0.0... " >&6; } + +if test -n "$ZSTD_CFLAGS"; then + pkg_cv_ZSTD_CFLAGS="$ZSTD_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libzstd >= 1.0.0\""; } >&5 + ($PKG_CONFIG --exists --print-errors "libzstd >= 1.0.0") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_ZSTD_CFLAGS=`$PKG_CONFIG --cflags "libzstd >= 1.0.0" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$ZSTD_LIBS"; then + pkg_cv_ZSTD_LIBS="$ZSTD_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libzstd >= 1.0.0\""; } >&5 + ($PKG_CONFIG --exists --print-errors "libzstd >= 1.0.0") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_ZSTD_LIBS=`$PKG_CONFIG --libs "libzstd >= 1.0.0" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + ZSTD_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libzstd >= 1.0.0" 2>&1` + else + ZSTD_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libzstd >= 1.0.0" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$ZSTD_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (libzstd >= 1.0.0) were not met: + +$ZSTD_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables ZSTD_CFLAGS +and ZSTD_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables ZSTD_CFLAGS +and ZSTD_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + ZSTD_CFLAGS=$pkg_cv_ZSTD_CFLAGS + ZSTD_LIBS=$pkg_cv_ZSTD_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi + + if { { $as_echo "$as_me:${as_lineno-$LINENO}: \${PKG_CONFIG} --exists --print-errors \"libzstd\""; } >&5 + (${PKG_CONFIG} --exists --print-errors "libzstd") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + ZSTD_LIBS_STATIC=`${PKG_CONFIG} --libs --static "libzstd"` + + else + as_fn_error $? "pkg-config description of libzstd, needed for static build, is not available" "$LINENO" 5 + fi + +fi + +if test "x$enable_zstd" = xyes; then : + BTRFSRESTORE_ZSTD=1 +else + BTRFSRESTORE_ZSTD=0 +fi + + +# Check whether --enable-python was given. +if test "${enable_python+set}" = set; then : + enableval=$enable_python; +else + enable_python=$enable_shared + +fi + + +if test "x$enable_python" = xyes; then + + + + + + + if test -n "$PYTHON"; then + # If the user set $PYTHON, use it and don't search something else. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $PYTHON version is >= 3.4" >&5 +$as_echo_n "checking whether $PYTHON version is >= 3.4... " >&6; } + prog="import sys +# split strings by '.' and convert to numeric. Append some zeros +# because we need at least 4 digits for the hex conversion. +# map returns an iterator in Python 3.0 and a list in 2.x +minver = list(map(int, '3.4'.split('.'))) + [0, 0, 0] +minverhex = 0 +# xrange is not present in Python 3.0 and range returns an iterator +for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[i] +sys.exit(sys.hexversion < minverhex)" + if { echo "$as_me:$LINENO: $PYTHON -c "$prog"" >&5 + ($PYTHON -c "$prog") >&5 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + as_fn_error $? "Python interpreter is too old" "$LINENO" 5 +fi + am_display_PYTHON=$PYTHON + else + # Otherwise, try each interpreter until we find one that satisfies + # VERSION. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for a Python interpreter with version >= 3.4" >&5 +$as_echo_n "checking for a Python interpreter with version >= 3.4... " >&6; } +if ${am_cv_pathless_PYTHON+:} false; then : + $as_echo_n "(cached) " >&6 +else + + for am_cv_pathless_PYTHON in python python2 python3 python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3.1 python3.0 python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python2.0 none; do + test "$am_cv_pathless_PYTHON" = none && break + prog="import sys +# split strings by '.' and convert to numeric. Append some zeros +# because we need at least 4 digits for the hex conversion. +# map returns an iterator in Python 3.0 and a list in 2.x +minver = list(map(int, '3.4'.split('.'))) + [0, 0, 0] +minverhex = 0 +# xrange is not present in Python 3.0 and range returns an iterator +for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[i] +sys.exit(sys.hexversion < minverhex)" + if { echo "$as_me:$LINENO: $am_cv_pathless_PYTHON -c "$prog"" >&5 + ($am_cv_pathless_PYTHON -c "$prog") >&5 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; then : + break +fi + done +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_pathless_PYTHON" >&5 +$as_echo "$am_cv_pathless_PYTHON" >&6; } + # Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON. + if test "$am_cv_pathless_PYTHON" = none; then + PYTHON=: + else + # Extract the first word of "$am_cv_pathless_PYTHON", so it can be a program name with args. +set dummy $am_cv_pathless_PYTHON; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_PYTHON+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $PYTHON in + [\\/]* | ?:[\\/]*) + ac_cv_path_PYTHON="$PYTHON" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_PYTHON="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +PYTHON=$ac_cv_path_PYTHON +if test -n "$PYTHON"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PYTHON" >&5 +$as_echo "$PYTHON" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi + am_display_PYTHON=$am_cv_pathless_PYTHON + fi + + + if test "$PYTHON" = :; then + as_fn_error $? "no suitable Python interpreter found" "$LINENO" 5 + else + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $am_display_PYTHON version" >&5 +$as_echo_n "checking for $am_display_PYTHON version... " >&6; } +if ${am_cv_python_version+:} false; then : + $as_echo_n "(cached) " >&6 +else + am_cv_python_version=`$PYTHON -c "import sys; sys.stdout.write(sys.version[:3])"` +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_python_version" >&5 +$as_echo "$am_cv_python_version" >&6; } + PYTHON_VERSION=$am_cv_python_version + + + + PYTHON_PREFIX='${prefix}' + + PYTHON_EXEC_PREFIX='${exec_prefix}' + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $am_display_PYTHON platform" >&5 +$as_echo_n "checking for $am_display_PYTHON platform... " >&6; } +if ${am_cv_python_platform+:} false; then : + $as_echo_n "(cached) " >&6 +else + am_cv_python_platform=`$PYTHON -c "import sys; sys.stdout.write(sys.platform)"` +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_python_platform" >&5 +$as_echo "$am_cv_python_platform" >&6; } + PYTHON_PLATFORM=$am_cv_python_platform + + + # Just factor out some code duplication. + am_python_setup_sysconfig="\ +import sys +# Prefer sysconfig over distutils.sysconfig, for better compatibility +# with python 3.x. See automake bug#10227. +try: + import sysconfig +except ImportError: + can_use_sysconfig = 0 +else: + can_use_sysconfig = 1 +# Can't use sysconfig in CPython 2.7, since it's broken in virtualenvs: +# <https://github.com/pypa/virtualenv/issues/118> +try: + from platform import python_implementation + if python_implementation() == 'CPython' and sys.version[:3] == '2.7': + can_use_sysconfig = 0 +except ImportError: + pass" + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $am_display_PYTHON script directory" >&5 +$as_echo_n "checking for $am_display_PYTHON script directory... " >&6; } +if ${am_cv_python_pythondir+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test "x$prefix" = xNONE + then + am_py_prefix=$ac_default_prefix + else + am_py_prefix=$prefix + fi + am_cv_python_pythondir=`$PYTHON -c " +$am_python_setup_sysconfig +if can_use_sysconfig: + sitedir = sysconfig.get_path('purelib', vars={'base':'$am_py_prefix'}) +else: + from distutils import sysconfig + sitedir = sysconfig.get_python_lib(0, 0, prefix='$am_py_prefix') +sys.stdout.write(sitedir)"` + case $am_cv_python_pythondir in + $am_py_prefix*) + am__strip_prefix=`echo "$am_py_prefix" | sed 's|.|.|g'` + am_cv_python_pythondir=`echo "$am_cv_python_pythondir" | sed "s,^$am__strip_prefix,$PYTHON_PREFIX,"` + ;; + *) + case $am_py_prefix in + /usr|/System*) ;; + *) + am_cv_python_pythondir=$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages + ;; + esac + ;; + esac + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_python_pythondir" >&5 +$as_echo "$am_cv_python_pythondir" >&6; } + pythondir=$am_cv_python_pythondir + + + + pkgpythondir=\${pythondir}/$PACKAGE + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $am_display_PYTHON extension module directory" >&5 +$as_echo_n "checking for $am_display_PYTHON extension module directory... " >&6; } +if ${am_cv_python_pyexecdir+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test "x$exec_prefix" = xNONE + then + am_py_exec_prefix=$am_py_prefix + else + am_py_exec_prefix=$exec_prefix + fi + am_cv_python_pyexecdir=`$PYTHON -c " +$am_python_setup_sysconfig +if can_use_sysconfig: + sitedir = sysconfig.get_path('platlib', vars={'platbase':'$am_py_prefix'}) +else: + from distutils import sysconfig + sitedir = sysconfig.get_python_lib(1, 0, prefix='$am_py_prefix') +sys.stdout.write(sitedir)"` + case $am_cv_python_pyexecdir in + $am_py_exec_prefix*) + am__strip_prefix=`echo "$am_py_exec_prefix" | sed 's|.|.|g'` + am_cv_python_pyexecdir=`echo "$am_cv_python_pyexecdir" | sed "s,^$am__strip_prefix,$PYTHON_EXEC_PREFIX,"` + ;; + *) + case $am_py_exec_prefix in + /usr|/System*) ;; + *) + am_cv_python_pyexecdir=$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/site-packages + ;; + esac + ;; + esac + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_python_pyexecdir" >&5 +$as_echo "$am_cv_python_pyexecdir" >&6; } + pyexecdir=$am_cv_python_pyexecdir + + + + pkgpyexecdir=\${pyexecdir}/$PACKAGE + + + + fi + + + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for python-${PYTHON_VERSION}" >&5 +$as_echo_n "checking for python-${PYTHON_VERSION}... " >&6; } + +if test -n "$PYTHON_CFLAGS"; then + pkg_cv_PYTHON_CFLAGS="$PYTHON_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python-\${PYTHON_VERSION}\""; } >&5 + ($PKG_CONFIG --exists --print-errors "python-${PYTHON_VERSION}") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_PYTHON_CFLAGS=`$PKG_CONFIG --cflags "python-${PYTHON_VERSION}" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$PYTHON_LIBS"; then + pkg_cv_PYTHON_LIBS="$PYTHON_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python-\${PYTHON_VERSION}\""; } >&5 + ($PKG_CONFIG --exists --print-errors "python-${PYTHON_VERSION}") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_PYTHON_LIBS=`$PKG_CONFIG --libs "python-${PYTHON_VERSION}" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + PYTHON_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "python-${PYTHON_VERSION}" 2>&1` + else + PYTHON_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "python-${PYTHON_VERSION}" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$PYTHON_PKG_ERRORS" >&5 + + as_fn_error $? "Package requirements (python-${PYTHON_VERSION}) were not met: + +$PYTHON_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +Alternatively, you may set the environment variables PYTHON_CFLAGS +and PYTHON_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details." "$LINENO" 5 +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +Alternatively, you may set the environment variables PYTHON_CFLAGS +and PYTHON_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details. + +To get pkg-config, see <http://pkg-config.freedesktop.org/>. +See \`config.log' for more details" "$LINENO" 5; } +else + PYTHON_CFLAGS=$pkg_cv_PYTHON_CFLAGS + PYTHON_LIBS=$pkg_cv_PYTHON_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +fi +fi + +if test "x$enable_python" = xyes; then : + PYTHON_BINDINGS=1 +else + PYTHON_BINDINGS=0 +fi + + + +# udev v190 introduced the btrfs builtin and a udev rule to use it. +# Our udev rule gives us the friendly dm names but isn't required (or valid) +# on earlier releases. +UDEVDIR= +if ${PKG_CONFIG} udev --atleast-version 190; then + UDEVDIR="$(${PKG_CONFIG} udev --variable=udevdir)" +fi + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lzo_version in -llzo2" >&5 +$as_echo_n "checking for lzo_version in -llzo2... 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"unrecognized option: \`$1' +Try \`$0 --help' for more information." ;; + + *) as_fn_append ac_config_targets " $1" + ac_need_defaults=false ;; + + esac + shift +done + +ac_configure_extra_args= + +if $ac_cs_silent; then + exec 6>/dev/null + ac_configure_extra_args="$ac_configure_extra_args --silent" +fi + +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +if \$ac_cs_recheck; then + set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion + shift + \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6 + CONFIG_SHELL='$SHELL' + export CONFIG_SHELL + exec "\$@" +fi + +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +exec 5>>config.log +{ + echo + sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX +## Running $as_me. ## +_ASBOX + $as_echo "$ac_log" +} >&5 + +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + +# Handling of arguments. +for ac_config_target in $ac_config_targets +do + case $ac_config_target in + "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;; + "Makefile.inc") CONFIG_FILES="$CONFIG_FILES Makefile.inc" ;; + "Documentation/Makefile") CONFIG_FILES="$CONFIG_FILES Documentation/Makefile" ;; + "version.h") CONFIG_FILES="$CONFIG_FILES version.h" ;; + + *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;; + esac +done + + +# If the user did not use the arguments to specify the items to instantiate, +# then the envvar interface is used. Set only those that are not. +# We use the long form for the default assignment because of an extremely +# bizarre bug on SunOS 4.1.3. +if $ac_need_defaults; then + test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files + test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers +fi + +# Have a temporary directory for convenience. Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= ac_tmp= + trap 'exit_status=$? + : "${ac_tmp:=$tmp}" + { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5 +ac_tmp=$tmp + +# Set up the scripts for CONFIG_FILES section. +# No need to generate them if there are no CONFIG_FILES. +# This happens for instance with `./config.status config.h'. +if test -n "$CONFIG_FILES"; then + + +ac_cr=`echo X | tr X '\015'` +# On cygwin, bash can eat \r inside `` if the user requested igncr. +# But we know of no other shell where ac_cr would be empty at this +# point, so we can use a bashism as a fallback. +if test "x$ac_cr" = x; then + eval ac_cr=\$\'\\r\' +fi +ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null` +if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then + ac_cs_awk_cr='\\r' +else + ac_cs_awk_cr=$ac_cr +fi + +echo 'BEGIN {' >"$ac_tmp/subs1.awk" && +_ACEOF + + +{ + echo "cat >conf$$subs.awk <<_ACEOF" && + echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' && + echo "_ACEOF" +} >conf$$subs.sh || + as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5 +ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'` +ac_delim='%!_!# ' +for ac_last_try in false false false false false :; do + . ./conf$$subs.sh || + as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5 + + ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X` + if test $ac_delim_n = $ac_delim_num; then + break + elif $ac_last_try; then + as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5 + else + ac_delim="$ac_delim!$ac_delim _$ac_delim!! " + fi +done +rm -f conf$$subs.sh + +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK && +_ACEOF +sed -n ' +h +s/^/S["/; s/!.*/"]=/ +p +g +s/^[^!]*!// +:repl +t repl +s/'"$ac_delim"'$// +t delim +:nl +h +s/\(.\{148\}\)..*/\1/ +t more1 +s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/ +p +n +b repl +:more1 +s/["\\]/\\&/g; s/^/"/; s/$/"\\/ +p +g +s/.\{148\}// +t nl +:delim +h +s/\(.\{148\}\)..*/\1/ +t more2 +s/["\\]/\\&/g; s/^/"/; s/$/"/ +p +b +:more2 +s/["\\]/\\&/g; s/^/"/; s/$/"\\/ +p +g +s/.\{148\}// +t delim +' <conf$$subs.awk | sed ' +/^[^""]/{ + N + s/\n// +} +' >>$CONFIG_STATUS || ac_write_fail=1 +rm -f conf$$subs.awk +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +_ACAWK +cat >>"\$ac_tmp/subs1.awk" <<_ACAWK && + for (key in S) S_is_set[key] = 1 + FS = "" + +} +{ + line = $ 0 + nfields = split(line, field, "@") + substed = 0 + len = length(field[1]) + for (i = 2; i < nfields; i++) { + key = field[i] + keylen = length(key) + if (S_is_set[key]) { + value = S[key] + line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3) + len += length(value) + length(field[++i]) + substed = 1 + } else + len += 1 + keylen + } + + print line +} + +_ACAWK +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then + sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g" +else + cat +fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \ + || as_fn_error $? "could not setup config files machinery" "$LINENO" 5 +_ACEOF + +# VPATH may cause trouble with some makes, so we remove sole $(srcdir), +# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{ +h +s/// +s/^/:/ +s/[ ]*$/:/ +s/:\$(srcdir):/:/g +s/:\${srcdir}:/:/g +s/:@srcdir@:/:/g +s/^:*// +s/:*$// +x +s/\(=[ ]*\).*/\1/ +G +s/\n// +s/^[^=]*=[ ]*$// +}' +fi + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +fi # test -n "$CONFIG_FILES" + +# Set up the scripts for CONFIG_HEADERS section. +# No need to generate them if there are no CONFIG_HEADERS. +# This happens for instance with `./config.status Makefile'. +if test -n "$CONFIG_HEADERS"; then +cat >"$ac_tmp/defines.awk" <<\_ACAWK || +BEGIN { +_ACEOF + +# Transform confdefs.h into an awk script `defines.awk', embedded as +# here-document in config.status, that substitutes the proper values into +# config.h.in to produce config.h. + +# Create a delimiter string that does not exist in confdefs.h, to ease +# handling of long lines. +ac_delim='%!_!# ' +for ac_last_try in false false :; do + ac_tt=`sed -n "/$ac_delim/p" confdefs.h` + if test -z "$ac_tt"; then + break + elif $ac_last_try; then + as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5 + else + ac_delim="$ac_delim!$ac_delim _$ac_delim!! " + fi +done + +# For the awk script, D is an array of macro values keyed by name, +# likewise P contains macro parameters if any. Preserve backslash +# newline sequences. + +ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]* +sed -n ' +s/.\{148\}/&'"$ac_delim"'/g +t rset +:rset +s/^[ ]*#[ ]*define[ ][ ]*/ / +t def +d +:def +s/\\$// +t bsnl +s/["\\]/\\&/g +s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\ +D["\1"]=" \3"/p +s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2"/p +d +:bsnl +s/["\\]/\\&/g +s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\ +D["\1"]=" \3\\\\\\n"\\/p +t cont +s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p +t cont +d +:cont +n +s/.\{148\}/&'"$ac_delim"'/g +t clear +:clear +s/\\$// +t bsnlc +s/["\\]/\\&/g; s/^/"/; s/$/"/p +d +:bsnlc +s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p +b cont +' <confdefs.h | sed ' +s/'"$ac_delim"'/"\\\ +"/g' >>$CONFIG_STATUS || ac_write_fail=1 + +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 + for (key in D) D_is_set[key] = 1 + FS = "" +} +/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ { + line = \$ 0 + split(line, arg, " ") + if (arg[1] == "#") { + defundef = arg[2] + mac1 = arg[3] + } else { + defundef = substr(arg[1], 2) + mac1 = arg[2] + } + split(mac1, mac2, "(") #) + macro = mac2[1] + prefix = substr(line, 1, index(line, defundef) - 1) + if (D_is_set[macro]) { + # Preserve the white space surrounding the "#". + print prefix "define", macro P[macro] D[macro] + next + } else { + # Replace #undef with comments. This is necessary, for example, + # in the case of _POSIX_SOURCE, which is predefined and required + # on some systems where configure will not decide to define it. + if (defundef == "undef") { + print "/*", prefix defundef, macro, "*/" + next + } + } +} +{ print } +_ACAWK +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + as_fn_error $? "could not setup config headers machinery" "$LINENO" 5 +fi # test -n "$CONFIG_HEADERS" + + +eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS " +shift +for ac_tag +do + case $ac_tag in + :[FHLC]) ac_mode=$ac_tag; continue;; + esac + case $ac_mode$ac_tag in + :[FHL]*:*);; + :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;; + :[FH]-) ac_tag=-:-;; + :[FH]*) ac_tag=$ac_tag:$ac_tag.in;; + esac + ac_save_IFS=$IFS + IFS=: + set x $ac_tag + IFS=$ac_save_IFS + shift + ac_file=$1 + shift + + case $ac_mode in + :L) ac_source=$1;; + :[FH]) + ac_file_inputs= + for ac_f + do + case $ac_f in + -) ac_f="$ac_tmp/stdin";; + *) # Look for the file first in the build tree, then in the source tree + # (if the path is not absolute). The absolute path cannot be DOS-style, + # because $ac_f cannot contain `:'. + test -f "$ac_f" || + case $ac_f in + [\\/$]*) false;; + *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";; + esac || + as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;; + esac + case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac + as_fn_append ac_file_inputs " '$ac_f'" + done + + # Let's still pretend it is `configure' which instantiates (i.e., don't + # use $as_me), people would be surprised to read: + # /* config.h. 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"could not create $ac_file" "$LINENO" 5 ;; + esac + ;; + esac + + ac_dir=`$as_dirname -- "$ac_file" || +$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$ac_file" : 'X\(//\)[^/]' \| \ + X"$ac_file" : 'X\(//\)$' \| \ + X"$ac_file" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$ac_file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + as_dir="$ac_dir"; as_fn_mkdir_p + ac_builddir=. + +case "$ac_dir" in +.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;; +*) + ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'` + # A ".." for each directory in $ac_dir_suffix. + ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'` + case $ac_top_builddir_sub in + "") ac_top_builddir_sub=. ac_top_build_prefix= ;; + *) ac_top_build_prefix=$ac_top_builddir_sub/ ;; + esac ;; +esac +ac_abs_top_builddir=$ac_pwd +ac_abs_builddir=$ac_pwd$ac_dir_suffix +# for backward compatibility: +ac_top_builddir=$ac_top_build_prefix + +case $srcdir in + .) # We are building in place. + ac_srcdir=. + ac_top_srcdir=$ac_top_builddir_sub + ac_abs_top_srcdir=$ac_pwd ;; + [\\/]* | ?:[\\/]* ) # Absolute name. + ac_srcdir=$srcdir$ac_dir_suffix; + ac_top_srcdir=$srcdir + ac_abs_top_srcdir=$srcdir ;; + *) # Relative name. + ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix + ac_top_srcdir=$ac_top_build_prefix$srcdir + ac_abs_top_srcdir=$ac_pwd/$srcdir ;; +esac +ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix + + + case $ac_mode in + :F) + # + # CONFIG_FILE + # + + case $INSTALL in + [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;; + *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;; + esac +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +# If the template does not know about datarootdir, expand it. +# FIXME: This hack should be removed a few years after 2.60. +ac_datarootdir_hack=; ac_datarootdir_seen= +ac_sed_dataroot=' +/datarootdir/ { + p + q +} +/@datadir@/p +/@docdir@/p +/@infodir@/p +/@localedir@/p +/@mandir@/p' +case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in +*datarootdir*) ac_datarootdir_seen=yes;; +*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*) + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5 +$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;} +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 + ac_datarootdir_hack=' + s&@datadir@&$datadir&g + s&@docdir@&$docdir&g + s&@infodir@&$infodir&g + s&@localedir@&$localedir&g + s&@mandir@&$mandir&g + s&\\\${datarootdir}&$datarootdir&g' ;; +esac +_ACEOF + +# Neutralize VPATH when `$srcdir' = `.'. +# Shell code in configure.ac might set extrasub. +# FIXME: do we really want to maintain this feature? +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +ac_sed_extra="$ac_vpsub +$extrasub +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +:t +/@[a-zA-Z_][a-zA-Z_0-9]*@/!b +s|@configure_input@|$ac_sed_conf_input|;t t +s&@top_builddir@&$ac_top_builddir_sub&;t t +s&@top_build_prefix@&$ac_top_build_prefix&;t t +s&@srcdir@&$ac_srcdir&;t t +s&@abs_srcdir@&$ac_abs_srcdir&;t t +s&@top_srcdir@&$ac_top_srcdir&;t t +s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t +s&@builddir@&$ac_builddir&;t t +s&@abs_builddir@&$ac_abs_builddir&;t t +s&@abs_top_builddir@&$ac_abs_top_builddir&;t t +s&@INSTALL@&$ac_INSTALL&;t t +$ac_datarootdir_hack +" +eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \ + >$ac_tmp/out || as_fn_error $? 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"could not create $ac_file" "$LINENO" 5 + ;; + :H) + # + # CONFIG_HEADER + # + if test x"$ac_file" != x-; then + { + $as_echo "/* $configure_input */" \ + && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" + } >"$ac_tmp/config.h" \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then + { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5 +$as_echo "$as_me: $ac_file is unchanged" >&6;} + else + rm -f "$ac_file" + mv "$ac_tmp/config.h" "$ac_file" \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + fi + else + $as_echo "/* $configure_input */" \ + && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \ + || as_fn_error $? "could not create -" "$LINENO" 5 + fi + ;; + + + esac + +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: + ${PACKAGE_NAME} ${PACKAGE_VERSION} + + prefix: ${prefix} + exec prefix: ${exec_prefix} + + bindir: ${bindir} + libdir: ${libdir} + includedir: ${includedir} + + compiler: ${CC} + cflags: ${CFLAGS} + ldflags: ${LDFLAGS} + + programs: ${enable_programs} + shared libraries: ${enable_shared} + static libraries: ${enable_static} + documentation: ${enable_documentation} + doc generator: ${ASCIIDOC_TOOL} + backtrace support: ${enable_backtrace} + btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)} + btrfs-restore zstd: ${enable_zstd} + Python bindings: ${enable_python} + Python interpreter: ${PYTHON} + + Type 'make' to compile. +" >&5 +$as_echo " + ${PACKAGE_NAME} ${PACKAGE_VERSION} + + prefix: ${prefix} + exec prefix: ${exec_prefix} + + bindir: ${bindir} + libdir: ${libdir} + includedir: ${includedir} + + compiler: ${CC} + cflags: ${CFLAGS} + ldflags: ${LDFLAGS} + + programs: ${enable_programs} + shared libraries: ${enable_shared} + static libraries: ${enable_static} + documentation: ${enable_documentation} + doc generator: ${ASCIIDOC_TOOL} + backtrace support: ${enable_backtrace} + btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)} + btrfs-restore zstd: ${enable_zstd} + Python bindings: ${enable_python} + Python interpreter: ${PYTHON} + + Type 'make' to compile. +" >&6; } |