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Instead of freezing in PID1 and letting the forked child freeze or
reboot when exec("/bin/sh") fails, just wait for the child's
exit and then do the freeze_or_reboot in PID1 as usual.
This means that when both crash_shell and crash_reboot are enabled, the
system will reboot after the shell exits.
This adds support for naming file descriptors passed using socket
activation. The names are passed in a new $LISTEN_FDNAMES= environment
variable, that matches the existign $LISTEN_FDS= one and contains a
colon-separated list of names.
This also adds support for naming fds submitted to the per-service fd
store using FDNAME= in the sd_notify() message.
This also adds a new FileDescriptorName= setting for socket unit files
to set the name for fds created by socket units.
This also adds a new call sd_listen_fds_with_names(), that is similar to
sd_listen_fds(), but also returns the names of the fds.
systemd-activate gained the new --fdname= switch to specify a name for
testing socket activation.
This is based on #1247 by Maciej Wereski.
Fixes#1247.
While it is currently possible to either not set MACAddressPolicy or set
it to a value different from "persistent" or "random", it is not obvious
that a user can do so. Add a policy, "none", which simply retains kernel
MAC addresses (same as not filling in the policy at all) and document it
so that users are aware of this setting.
Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Implement a maximum limit on number of journal files to keep around.
Enforcing a limit is useful on this since our performance when viewing
pays a heavy penalty for each journal file to interleve. This setting is
turned on now by default, and set to 100.
Also, actully implement what 348ced9097
promised: use whatever we find on disk at startup as lower bound on how
much disk space we can use. That commit introduced some provisions to
implement this, but actually never did.
This also adds "journalctl --vacuum-files=" to vacuum files on disk by
their number explicitly.
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.
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.
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.
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
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.
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.
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...
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.
When bash is interactive it ignores SIGTERM.
SIGHUP indicates to bash that the connection has been
severed. `systemctl stop` doesn't wait TimeoutStopSec secs.
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
