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We don't need callers to manage string storage for each pretty_sizes()
call. We can use a macro to have per-thread and per-call static storage
so that pretty_sizes() can be used as many times as needed in printf()
arguments without requiring a bunch of supporting variables.
This lets us have a natural interface at the cost of requiring __thread
and TLS from gcc and a small amount of static storage. This seems
better than the current code or doing something with illegible format
specifier macros.
Signed-off-by: Zach Brown <zab@redhat.com>
Acked-by: Wang Shilong <wangs.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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In order to sparse exact error message, we need to record errno here.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
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Signed-off-by: Anand Jain <anand.jain@oracle.com>
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Clean btrfslabel.[c|h] out of the source tree and move those related
functions to utils.[c|h].
CC: Gene Czarcinski <gene@czarc.net>
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
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Fix the command usage of "btrfs filesystem label" to reflect this change. i.e. so that
we can get/set the label of a mounted filesystem against the mountpoint.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
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http://git.zabbo.net/cgit/btrfs-progs into merged
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In the places where we copy a string into the name
member of btrfs_ioctl_vol_args or btrfs_ioctl_vol_args_v2,
we use strncopy (to not overflow the name array) and then
set the last position to the null character.
Howver, in both cases the arrays are defined with:
char name[MAX+1];
hence the last array position is name[MAX].
In most cases, we now insert the null at name[MAX-1]
which deprives us of one useful character.
Even the above isn't consistent through the code, so
make some helper code to make it simple, i.e.
strncpy_null(dest, src) which automatically does the
right thing based on the size of dest.
Thanks to Zach Brown for the macro suggestion.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
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Argument validation failed to close the fd that was opened. So check
the arguments before opening anything.
Signed-off-by: Zach Brown <zab@redhat.com>
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David Woodhouse originally contributed this code, and Chris Mason
changed it around to reflect the current design goals for raid56.
The original code expected all metadata and data writes to be full
stripes. This meant metadata block size == stripe size, and had a few
other restrictions.
This version allows metadata blocks smaller than the stripe size. It
implements both raid5 and raid6, although it does not have code to
rebuild from parity if one of the drives is missing or incorrect.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Move the function from cmds-filesystem.c and mkfs.c to utils.c
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
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Some code pathes forget to free memory on exit.
Changelog from v1:
Fix the variable is used uncorrectly. [Ram Pai]
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Need to close fd on exit.
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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The btrfs filesystem resize command defaults to only resizing the
filesystem for devid 1, and must have a devid passed in to resize the
filesystem for the other devices in the filesystem.
Additionally the documentation lacked information on how to actually
resize the underlying partition so this provides a little more detail.
Signed-off-by: Shawn Bohrer <shawn.bohrer@gmail.com>
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The btrfs filesystem show command is only actually searching for labels,
it's not searching for UUID's at all. This patch fixes that problem.
Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
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* restore.c (main): Ensure strncpy-copied dir_name is NUL-terminated.
* btrfsctl.c (main): Likewise, for a command-line argument.
* utils.c (multiple functions): Likewise.
* btrfs-list.c (add_root): Likewise.
* btrfslabel.c (change_label_unmounted): Likewise.
* cmds-device.c (cmd_add_dev, cmd_rm_dev, cmd_scan_dev): Likewise.
* cmds-filesystem.c (cmd_resize): Likewise.
* cmds-subvolume.c (cmd_subvol_create, cmd_subvol_delete, cmd_snapshot):
Likewise.
Reviewed-by: Josef Bacik <josef@redhat.com>
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Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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Add balance command group under both 'btrfs' and 'btrfs filesystem'.
Preserve the old 'btrfs filesystem balance <path>' behaviour.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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The new infrastructure offloads checking number of arguments passed to a
command to individual command handlers. Fix them up accordingly.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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Separate every command group into its own file (cmds_<group>.c) and
rearrange includes. Remove btrfs_cmds.c.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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