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With this rework we introduce systemd-rfkill.service as singleton that
is activated via systemd-rfkill.socket that listens on /dev/rfkill. That
way, we get notified each time a new rfkill device shows up or changes
state, in which case we restore and save its current setting to disk.
This is nicer than the previous logic, as this means we save/restore
state even of rfkill devices that are around only intermittently, and
save/restore the state even if the system is shutdown abruptly instead
of cleanly.
This implements what I suggested in #1019 and obsoletes it.
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Writable= is a new boolean setting. If ture, then ListenSpecial= will
open the specified path in O_RDWR mode, rather than just O_RDONLY.
This is useful for implementing services like rfkill, where /dev/rfkill
is more useful when opened in write mode, if we want to not only save
but also restore its state.
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Shell completion tweaks
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exit.target is now used for both system and user sessions,
so remove "on user service manager exit". Also reword that
paragraph: services will be killed before the manager exits,
even if they do not conflict with shutdown target, but we
recommend that they conflict with shutdown target so that
systemd schedules them to be stopped immediately when starting
to exit.
In the first paragraph, containers should be mentioned last,
and the more general systems first.
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This convention is almost universal in systemd man pages, and makes
it easier to visually parse the docs.
Also fix some markup along the way.
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Also reword some ungainly grammar constructs.
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We already have the property writable, hence let's add a command to set
it.
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Systemctl and more
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This introduces a new systemd.crash_reboot=1 kernel command line option
that triggers a reboot after crashing.
This also cleans up crash VT handling. Specifically, it cleans up the
configuration setting, to be between 1..63 or a boolean. This is to
replace the previous logic where "-1" meant disabled. We continue to
accept that setting, but only document the boolean syntax instead.
This also brings the documentation of the default settings in sync with
what actually happens.
The CrashChVT= configuration file setting is renamed to CrashChangeVT=,
following our usual logic of not abbreviating unnecessarily. The old
setting stays support for compat reasons.
Fixes #1300
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If set to ~ the working directory is set to the home directory of the
user configured in User=.
This change also exposes the existing switch for the working directory
that allowed making missing working directories non-fatal.
This also changes "machinectl shell" to make use of this to ensure that
the invoked shell is by default in the user's home directory.
Fixes #1268.
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And remove machine-id-commit as separate binary.
There's really no point in keeping this separate, as the sources are
pretty much identical, and have pretty identical interfaces. Let's unify
this in one binary.
Given that machine-id-commit was a private binary of systemd (shipped in
/usr/lib/) removing the tool is not an API break.
While we are at it, improve the documentation of the command substantially.
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booted with systemd
This sounds like the better place to expose this than in "systemd-notify
--booted".
Also document the so far undocumented "unknown" state the command might
return. And rearrange the table of states documented to be more like the
one for "is-running".
Also, don't document the precise exit code of this function, just say
errors are reported != 0 or > 0...
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This mirrors --type=help and simplifies completion scripts.
The array of states is dense, so the is no need to check if the string is null.
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See https://github.com/systemd/systemd/issues/1397
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sd-bus: add sd_bus_path_{encode,decode}_many() (v2)
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This introduces two new helpers alongside sd_bus_path_{encode,decode}(),
which work similarly to their counterparts, but accept a format-string as
input. This allows encoding and decoding multiple labels of a format
string at the same time.
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systemd.scope and systemd.resource-control contain that link.
systemd.slice should contain it too.
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When bash is interactive it ignores SIGTERM.
SIGHUP indicates to bash that the connection has been
severed. `systemctl stop` doesn't wait TimeoutStopSec secs.
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A variety of mostly unrelated fixes
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core: add support for usb functionfs v3
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Apparently, yum is obsolete, and dnf is the new yum. Mention only dnf
hence, and don't mention yum anymore.
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When a systemd service running in a container exits with a non-zero
code, it can be useful to terminate the container immediately and get
the exit code back to the host, when systemd-nspawn returns. This was
not possible to do. This patch adds the following to make it possible:
- Add a read-only "ExitCode" property on PID 1's "Manager" bus object.
By default, it is 0 so the behaviour stays the same as previously.
- Add a method "SetExitCode" on the same object. The method fails when
called on baremetal: it is only allowed in containers or in user
session.
- Add support in systemctl to call "systemctl exit 42". It reuses the
existing code for user session.
- Add exit.target and systemd-exit.service to the system instance.
- Change main() to actually call systemd-shutdown to exit() with the
correct value.
- Add verb 'exit' in systemd-shutdown with parameter --exit-code
- Update systemctl manpage.
I used the following to test it:
| $ sudo rkt --debug --insecure-skip-verify run \
| --mds-register=false --local docker://busybox \
| --exec=/bin/chroot -- /proc/1/root \
| systemctl --force exit 42
| ...
| Container rkt-895a0cba-5c66-4fa5-831c-e3f8ddc5810d failed with error code 42.
| $ echo $?
| 42
Fixes https://github.com/systemd/systemd/issues/1290
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core: extend KillUnit() to return error when no unit was killed
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networkd: add support for accept ra
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Add a new config directive called NetClass= to CGroup enabled units.
Allowed values are positive numbers for fix assignments and "auto" for
picking a free value automatically, for which we need to keep track of
dynamically assigned net class IDs of units. Introduce a hash table for
this, and also record the last ID that was given out, so the allocator
can start its search for the next 'hole' from there. This could
eventually be optimized with something like an irb.
The class IDs up to 65536 are considered reserved and won't be
assigned automatically by systemd. This barrier can be made a config
directive in the future.
Values set in unit files are stored in the CGroupContext of the
unit and considered read-only. The actually assigned number (which
may have been chosen dynamically) is stored in the unit itself and
is guaranteed to remain stable as long as the unit is active.
In the CGroup controller, set the configured CGroup net class to
net_cls.classid. Multiple unit may share the same net class ID,
and those which do are linked together.
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Let's stop using the "unsigned long" type for weights/shares, and let's
just use uint64_t for this, as that's what we expose on the bus.
Unify parsers, and always validate the range for these fields.
Correct the default blockio weight to 500, since that's what the kernel
actually uses.
When parsing the weight/shares settings from unit files accept the empty
string as a way to reset the weight/shares value. When getting it via
the bus, uniformly map (uint64_t) -1 to unset.
Open up StartupCPUShares= and StartupBlockIOWeight= to transient units.
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This adds support for the new "pids" cgroup controller of 4.3 kernels.
It allows accounting the number of tasks in a cgroup and enforcing
limits on it.
This adds two new setting TasksAccounting= and TasksMax= to each unit,
as well as a gloabl option DefaultTasksAccounting=.
This also updated "cgtop" to optionally make use of the new
kernel-provided accounting.
systemctl has been updated to show the number of tasks for each service
if it is available.
This patch also adds correct support for undoing memory limits for units
using a MemoryLimit=infinity syntax. We do the same for TasksMax= now
and hence keep things in sync here.
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We expect the CPE_NAME to be formatted in URI binding syntax. Make that
clear in the documentation. Furthermore, the CPE-spec has been taken over
by NIST, so adjust the links as well.
Reported by: Ben Harris <bjh21@cam.ac.uk>
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.nspawn fiels are simple settings files that may accompany container
images and directories and contain settings otherwise passed on the
nspawn command line. This provides an efficient way to attach execution
data directly to containers.
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This adds a new sd_pid_get_cgroup() call to sd-login which may be used
to query the control path of a process. This is useful for programs when
making use of delegation units, in order to figure out which subtree has
been delegated.
In light of the unified control group hierarchy this is finally safe to
do, hence let's add a proper API for it, to make it easier to use this.
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Makre sure we always return sensible errors for the various, following
the same rules, and document them in a comment in sd-login.c. Also,
update all relevant man pages accordingly.
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Show the same recommended example file in all three man pages, just
highlight the different, relevant parts.
This should be less confusing for users, and clarify what we actually
recommend how /etc/nsswitch.conf is set up.
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man: *.d conf directories: add note about initrd regeneration
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inspired by http://people.redhat.com/~rjones/virt-what/
see:
* http://git.annexia.org/?p=virt-what.git;a=blob;f=virt-what.in;h=a5ed33ef3e4bfa3281c9589eccac4d92dff1babe;hb=HEAD#l200
* http://git.annexia.org/?p=virt-what.git;a=blob;f=virt-what.in;h=a5ed33ef3e4bfa3281c9589eccac4d92dff1babe;hb=HEAD#l253
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man: fix typos in systemd-path.xml
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networkd: add support for tunnel encap limit
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