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path: root/src/shared/bus-util.c
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* bus-util: make log level lower in request_name_destroy_callback()Yu Watanabe2018-10-29
| | | | | | Fixes #9442. (cherry picked from commit 04e075b572b168a183cde29480dbb30d027d4fe7)
* bus-util: fix error handlingYu Watanabe2018-10-29
| | | | (cherry picked from commit 0ceff9068d4def8895929ba8c201a23502a7f941)
* Prep v239: Add support for the new 'suspend-then-hibernate' method.Sven Eden2018-08-24
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* tree-wide: remove Lennart's copyright linesLennart Poettering2018-08-24
| | | | | | | | | | | These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
* tree-wide: drop 'This file is part of systemd' blurbLennart Poettering2018-08-24
| | | | | | | | | | | | | | | | This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
* timedatectl: add 'show' command to display machine-readable outputYu Watanabe2018-08-24
| | | | Closes #9249.
* tree-wide: drop !! casts to booleansZbigniew Jędrzejewski-Szmek2018-08-24
| | | | | | | | | | | They are not needed, because anything that is non-zero is converted to true. C11: > 6.3.1.2: When any scalar value is converted to _Bool, the result is 0 if the > value compares equal to 0; otherwise, the result is 1. https://stackoverflow.com/questions/31551888/casting-int-to-bool-in-c-c
* shared/bus-util: use the new cleanup functionality to avoid a memleakZbigniew Jędrzejewski-Szmek2018-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the async callbacks didn't get a chance to finish properly, we'd leak memory. The output from test-bus-util with additional log line in the callbacks to show what is happening: $ build/test-bus-util /* test_name_async (0) */ Bus test-bus: changing state UNSET → OPENING Bus test-bus: changing state OPENING → AUTHENTICATING Bus test-bus: changing state AUTHENTICATING → HELLO Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=Hello cookie=1 reply_cookie=0 signature=n/a error-name=n/a error-message=n/a Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=RequestName cookie=2 reply_cookie=0 signature=su error-name=n/a error-message=n/a Got message type=method_return sender=org.freedesktop.DBus destination=:1.732 path=n/a interface=n/a member=n/a cookie=4294967295 reply_cookie=1 signature=s error-name=n/a error-message=n/a Bus test-bus: changing state HELLO → RUNNING Bus test-bus: changing state RUNNING → CLOSED request_name_destroy_callback n_ref=1 /* test_name_async (20) */ Bus test-bus: changing state UNSET → OPENING Bus test-bus: changing state OPENING → AUTHENTICATING Bus test-bus: changing state AUTHENTICATING → HELLO stage 0: sd_bus_process returned 1 Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=Hello cookie=1 reply_cookie=0 signature=n/a error-name=n/a error-message=n/a Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=RequestName cookie=2 reply_cookie=0 signature=su error-name=n/a error-message=n/a stage 1: sd_bus_process returned 1 Got message type=method_return sender=org.freedesktop.DBus destination=:1.733 path=n/a interface=n/a member=n/a cookie=4294967295 reply_cookie=1 signature=s error-name=n/a error-message=n/a Bus test-bus: changing state HELLO → RUNNING stage 2: sd_bus_process returned 1 Got message type=signal sender=org.freedesktop.DBus.Local destination=n/a path=/org/freedesktop/DBus/Local interface=org.freedesktop.DBus.Local member=Connected cookie=4294967295 reply_cookie=0 signature=n/a error-name=n/a error-message=n/a stage 3: sd_bus_process returned 1 Got message type=signal sender=org.freedesktop.DBus destination=:1.733 path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=NameAcquired cookie=4294967295 reply_cookie=0 signature=s error-name=n/a error-message=n/a stage 4: sd_bus_process returned 1 Got message type=error sender=org.freedesktop.DBus destination=:1.733 path=n/a interface=n/a member=n/a cookie=4294967295 reply_cookie=2 signature=s error-name=org.freedesktop.DBus.Error.AccessDenied error-message=Request to own name refused by policy Unable to request name, will retry after reloading DBus configuration: Request to own name refused by policy Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=ReloadConfig cookie=3 reply_cookie=0 signature=n/a error-name=n/a error-message=n/a request_name_destroy_callback n_ref=2 stage 5: sd_bus_process returned 1 Got message type=method_return sender=org.freedesktop.DBus destination=:1.733 path=n/a interface=n/a member=n/a cookie=4294967295 reply_cookie=3 signature= error-name=n/a error-message=n/a Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=RequestName cookie=4 reply_cookie=0 signature=su error-name=n/a error-message=n/a request_name_destroy_callback n_ref=1 stage 6: sd_bus_process returned 1 Got message type=error sender=org.freedesktop.DBus destination=:1.733 path=n/a interface=n/a member=n/a cookie=4294967295 reply_cookie=4 signature=s error-name=org.freedesktop.DBus.Error.AccessDenied error-message=Request to own name refused by policy Unable to request name, failing connection: Request to own name refused by policy Bus test-bus: changing state RUNNING → CLOSING stage 7: sd_bus_process returned 1 Bus test-bus: changing state CLOSING → CLOSED stage 8: sd_bus_process returned 1 stage 9: sd_bus_process returned -104 Processing failed: Connection reset by peer
* bus-util: avoid unneeded initalization to zeroZbigniew Jędrzejewski-Szmek2018-08-24
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* Use const char* for timestamp strings which we don't plan to modifyZbigniew Jędrzejewski-Szmek2018-08-24
| | | | Makes the intent a bit clearer.
* tree-wide: fix typo in comments and NEWSYu Watanabe2018-08-24
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* machined: move bus_reply_pair_array() into generic utilitiesLennart Poettering2018-08-24
| | | | This way, we can reuse it in portabled.
* nsflsgs: drop namespace_flag_{from,to}_string()Yu Watanabe2018-08-24
| | | | | | This also drops namespace_flag_to_string_many_with_check(), and renames namespace_flag_{from,to}_string_many() to namespace_flags_{from,to}_string().
* timesync,shared: move logic requesting bus name to sharedYu Watanabe2018-08-24
| | | | | Preparation for setting DynamicUser= to other services which request bus names.
* rlimit-util: rework rlimit_{from|to}_string() to work without "Limit" prefixLennart Poettering2018-08-24
| | | | | let's make the call more generic, so that we can also easily use it for parsing "RLIMIT_xyz" style constants.
* tree-wide: use strv_free_and_replace() macroYu Watanabe2018-08-24
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* bus-util: print a friendly message when PID1 is not systemdYu Watanabe2018-08-24
| | | | | | Follow-up for 861f16d2679eeda79e8185057cef24653913e300. Fixes #8913.
* bus-util: introduce bus_open_system_watch_bind_with_description()Yu Watanabe2018-08-24
| | | | | | Similar to 56fbd7187a5af44a90c258fbeb1f17114f226bb3, this adds bus_open_system_watch_bind_with_description() to set description for busses.
* tree-wide: drop license boilerplateZbigniew Jędrzejewski-Szmek2018-08-24
| | | | | | | | | | Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
* tree-wide: use TAKE_PTR() and TAKE_FD() macrosYu Watanabe2018-08-24
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* bus-util: add flags for bus_map_all_properties() (#8546)Yu Watanabe2018-08-24
| | | | | | | | | | This adds flags BUS_MAP_STRDUP and BUS_MAP_BOOLEAN_AS_BOOL. If BUS_MAP_STRDUP is set, then each "s" message is duplicated. If BUS_MAP_BOOLEAN_AS_BOOL is set, then each "b" message is written to a bool pointer. Follow-up for #8488. See https://github.com/systemd/systemd/pull/8488#discussion_r175816270.
* macro: introduce TAKE_PTR() macroLennart Poettering2018-08-24
| | | | | | | | | | | | | | | | This macro will read a pointer of any type, return it, and set the pointer to NULL. This is useful as an explicit concept of passing ownership of a memory area between pointers. This takes inspiration from Rust: https://doc.rust-lang.org/std/option/enum.Option.html#method.take and was suggested by Alan Jenkins (@sourcejedi). It drops ~160 lines of code from our codebase, which makes me like it. Also, I think it clarifies passing of ownership, and thus helps readability a bit (at least for the initiated who know the new macro)
* bus-util: fix format of NextElapseUSecRealtime= and LastTriggerUSec=Yu Watanabe2018-05-30
| | | | | | | | | | | | | Before this, `systemctl show` for calendar type timer unit outputs something like below. ``` NextElapseUSecRealtime=48y 3w 3d 15h NextElapseUSecMonotonic=0 LastTriggerUSec=48y 3w 3d 3h 41min 44.093095s LastTriggerUSecMonotonic=0 ``` As both NextElapseUSecRealtime= and LastTriggerUSec= are not timespan but timestamp, this makes format these values by `format_timestamp()`.
* bus-util: add bool property setterJan Klötzke2018-05-30
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* networkd,resolved: make use of watch_bind feature to connect to the busLennart Poettering2018-05-30
| | | | | | | | | | The changes both networkd and resolved to make use of the watch_bind feature of sd-bus to connect to the system bus. This way, both daemons can be started during early boot, and automatically and instantly connect to the system bus as it becomes available. This replaces prior code that used a time-based retry logic to connect to the bus.
* tree-wide: install matches asynchronouslyLennart Poettering2018-05-30
| | | | | | | | | Let's remove a number of synchronization points from our service startups: let's drop synchronous match installation, and let's opt for asynchronous instead. Also, let's use sd_bus_match_signal() instead of sd_bus_add_match() where we can.
* sd-bus: port one use of SO_PEERCRED by getpeercred()Lennart Poettering2018-05-30
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* Prep v236 : Add missing SPDX-License-Identifier (6/9) src/sharedSven Eden2018-03-26
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* *: fix some inconsistent control statement styleVito Caputo2017-12-01
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* Add set/hashmap helpers for non-trivial freeing and use where straighforwardZbigniew Jędrzejewski-Szmek2017-11-28
| | | | | | A macro is needed because otherwise we couldn't ensure type safety. Some simple tests are included. No functional change intended.
* build-sys: use #if Y instead of #ifdef Y everywhereZbigniew Jędrzejewski-Szmek2017-11-23
| | | | | | | | | | | | | | | The advantage is that is the name is mispellt, cpp will warn us. $ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/" $ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;' $ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g' $ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g' + manual changes to meson.build squash! build-sys: use #if Y instead of #ifdef Y everywhere v2: - fix incorrect setting of HAVE_LIBIDN2
* shared/bus-util: format uid==-1 and gid==-1 as [not set]Zbigniew Jędrzejewski-Szmek2017-09-25
| | | | | | | | | | | | | | | | $ systemctl show elogind-journald -p UID,GID UID=4294967295 GID=4294967295 ↓ $ systemctl show elogind-journald -p UID,GID UID=[not set] GID=[not set] Just seeing the number is very misleading. Fixes #6511.
* bus-util: remove unnecessary initializationsYu Watanabe2017-08-31
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* systemctl: show capabilities in human readable formatYu Watanabe2017-08-31
| | | | Follow-up for 21771f338d268e06dc9a10b9b08b14ff8217d4be.
* Prep v235: Apply upstream fixes (7/10) [src/shared]Sven Eden2017-08-14
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* treewide: fix typos (#6566)Torstein Husebø2017-08-10
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* bus-util: do not print (uint64_t) -1 as is (#6522)Yu Watanabe2017-08-10
| | | | Closes #4295 and #6511.
* bus-util: replace non-printable values with [unprintable]Zbigniew Jędrzejewski-Szmek2017-07-25
| | | | | | | | | | | | | | | Like I said in the previous commit, such values do not seem to appear in normal use, but it's pretty hard to prove that all paths to assign values properly check that they contain no spaces. So just in case some slip through, replace values with spaces (in case of single-valued properties) or spaces and newlines (in case of array proprties) with "[unprintable]". We were already doing it in case of properties which we didn't know how to print, so this fits in well. The advantage is the previous code which used escaping that a) this is easier to spot, b) does not mess up printing of properties which were properly escaped already. v2: - add comments
* Revert "bus: when dumping string property values escape the chars we use as ↵Zbigniew Jędrzejewski-Szmek2017-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | end-of-line and end-of-item marks" This reverts commit 27e9c5af817147ea1c678769e45e83f2e4b4ae96. Property values already use escaping, so escaping them a second time is confusing. It also should be mostly unnecessary: we take care to make property values only contains strings which (after the initial escaping) are printable and parseable without any futher escaping. Before revert: $ systemctl list-dependencies 'dev-mapper-luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device' dev-mapper-luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device ● ├─dev-mapper-luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.swap ● └─elogind-cryptsetup@luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.service $ systemctl show -p Wants,Requires 'dev-mapper-luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device' Requires=elogind-cryptsetup@luks\x5cx2d8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.service Wants=dev-mapper-luks\x5cx2d8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.swap Difference between systemctl show before revert and now: -Slice=system-elogind\x5cx2dcryptsetup.slice +Slice=system-elogind\x2dcryptsetup.slice -Id=elogind-cryptsetup@luks\x5cx2d8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.service +Id=elogind-cryptsetup@luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.service -Names=elogind-cryptsetup@luks\x5cx2d8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.service +Names=elogind-cryptsetup@luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.service -Requires=system-elogind\x5cx2dcryptsetup.slice +Requires=system-elogind\x2dcryptsetup.slice -BindsTo=dev-mapper-luks\x5cx2d8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.device dev-disk-by\x5cx2duuid-8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.device +BindsTo=dev-mapper-luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device dev-disk-by\x2duuid-8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device -RequiredBy=dev-mapper-luks\x5cx2d8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.device cryptsetup.target +RequiredBy=dev-mapper-luks\x2d8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device cryptsetup.target -WantedBy=dev-disk-by\x5cx2duuid-8db85dcf\x5cx2d6230\x5cx2d4e88\x5cx2d940d\x5cx2dba176d062b31.device +WantedBy=dev-disk-by\x2duuid-8db85dcf\x2d6230\x2d4e88\x2d940d\x2dba176d062b31.device
* Prep v233.2: Mask unneeded functions and definitions in src/sharedSven Eden2017-07-18
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* Prep v233: Add missing includes in src/sharedSven Eden2017-07-17
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* tree-wide: make bus_map_all_properties return a proper sd_bus_errorLennart Poettering2017-07-17
| | | | | | | | And then show it, to make things a bit friendlier to the user if we fail acquiring some props. In fact, this fixes a number of actual bugs, where we used an error structure for output that we actually never got an error in.
* shared: split out code for adding multiple names to sd_bus_track objectLennart Poettering2017-07-17
| | | | | Let's introduce a new call bus_track_add_name_many() that adds a string list to a tracking object.
* bus-util: print RestrictNamespaces= as a stringDjalal Harouni2017-07-17
| | | | | Allow all callers that want to print RestrictNamespaces= returned from D-Bus as a string instead of a u64 value.
* tree-wide: drop NULL sentinel from strjoinZbigniew Jędrzejewski-Szmek2017-07-17
| | | | | | | | | | | | | This makes strjoin and strjoina more similar and avoids the useless final argument. spatch -I . -I ./src -I ./src/basic -I ./src/basic -I ./src/shared -I ./src/shared -I ./src/network -I ./src/locale -I ./src/login -I ./src/journal -I ./src/journal -I ./src/timedate -I ./src/timesync -I ./src/nspawn -I ./src/resolve -I ./src/resolve -I ./src/elogind -I ./src/core -I ./src/core -I ./src/libudev -I ./src/udev -I ./src/udev/net -I ./src/udev -I ./src/libelogind/sd-bus -I ./src/libelogind/sd-event -I ./src/libelogind/sd-login -I ./src/libelogind/sd-netlink -I ./src/libelogind/sd-network -I ./src/libelogind/sd-hwdb -I ./src/libelogind/sd-device -I ./src/libelogind/sd-id128 -I ./src/libelogind-network --sp-file coccinelle/strjoin.cocci --in-place $(git ls-files src/*.c) git grep -e '\bstrjoin\b.*NULL' -l|xargs sed -i -r 's/strjoin\((.*), NULL\)/strjoin(\1)/' This might have missed a few cases (spatch has a really hard time dealing with _cleanup_ macros), but that's no big issue, they can always be fixed later.
* Prep v232: Mask new functions that are unneeded by elogindSven Eden2017-07-05
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* core: add "invocation ID" concept to service managerLennart Poettering2017-07-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new invocation ID concept to the service manager. The invocation ID identifies each runtime cycle of a unit uniquely. A new randomized 128bit ID is generated each time a unit moves from and inactive to an activating or active state. The primary usecase for this concept is to connect the runtime data PID 1 maintains about a service with the offline data the journal stores about it. Previously we'd use the unit name plus start/stop times, which however is highly racy since the journal will generally process log data after the service already ended. The "invocation ID" kinda matches the "boot ID" concept of the Linux kernel, except that it applies to an individual unit instead of the whole system. The invocation ID is passed to the activated processes as environment variable. It is additionally stored as extended attribute on the cgroup of the unit. The latter is used by journald to automatically retrieve it for each log logged message and attach it to the log entry. The environment variable is very easily accessible, even for unprivileged services. OTOH the extended attribute is only accessible to privileged processes (this is because cgroupfs only supports the "trusted." xattr namespace, not "user."). The environment variable may be altered by services, the extended attribute may not be, hence is the better choice for the journal. Note that reading the invocation ID off the extended attribute from journald is racy, similar to the way reading the unit name for a logging process is. This patch adds APIs to read the invocation ID to sd-id128: sd_id128_get_invocation() may be used in a similar fashion to sd_id128_get_boot(). PID1's own logging is updated to always include the invocation ID when it logs information about a unit. A new bus call GetUnitByInvocationID() is added that allows retrieving a bus path to a unit by its invocation ID. The bus path is built using the invocation ID, thus providing a path for referring to a unit that is valid only for the current runtime cycleof it. Outlook for the future: should the kernel eventually allow passing of cgroup information along AF_UNIX/SOCK_DGRAM messages via a unique cgroup id, then we can alter the invocation ID to be generated as hash from that rather than entirely randomly. This way we can derive the invocation race-freely from the messages.
* bus-util: generalize helper for ID128 prpoertiesLennart Poettering2017-07-05
| | | | This way, we can make use of this in other code, too.
* bus-util: turn on exit-on-disconnect for all command line toolsLennart Poettering2017-07-05
| | | | | | bus_connect_transport() is exclusively used from our command line tools, hence let's set exit-on-disconnect for all of them, making behaviour a bit nicer in case dbus-daemon goes down.
* bus-util: make sure map_basic() returns EOPNOTSUPP if called for an unknown typeLennart Poettering2017-07-05
| | | | Make sure we return proper errors for types not understood yet.
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