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Commit Graph

24 Commits

Author SHA1 Message Date
Zbigniew Jędrzejewski-Szmek
a7df2d1e43 Add SPDX license headers to unit files 2017-11-19 19:08:15 +01:00
Alan Jenkins
6f6d1a8a6a units: add missing ordering deps for Conflicts= of emergency.service
1. If we exited emergency mode immediately, we don't want to have an
   irreversible stop job still running for syslog.socket.  I _suspect_ that
   can't happen, but let's not waste effort working out exactly why it's
   impossible and not just very improbable.

2. Similarly, it seems undesirable to have rescue.service and
   emergency.service both running with an open FD of /dev/console, for
   however short a period.
2017-09-29 17:35:44 +01:00
Alan Jenkins
950d8fcdd9 units: express Conflict in syslog.socket instead of emergency.service
Note this commit only changes how the code is expressed; it does not change
the existence of any dependency.

The `Conflicts=` was added in 3136ec90, "Stop syslog.socket when entering
emergency mode".  The discussion in the issue #266 raised concerns that
this might be needed for other units, but failed to point out why
syslog.socket is special.  The reason is that syslog.socket has
DefaultDepedencies=no, so it does not get Requires=sysinit.target like
other socket units do.  But syslog.service does require sysinit.target,
among other things.

We don't have many socket, path, or timer units with
DefaultDependencies=no, and I don't think any of the triggered services
have such additional hard dependencies as syslog.service does.

It is much less confusing if we keep this `Conflicts=` in the same file as
the `DefaultDependencies=no` which made it necessary.
2017-09-29 17:34:55 +01:00
Felipe Sateler
912a0f21d9 sulogin-shell: switch from shell implementation to a C implementation (#6698) 2017-09-08 18:21:37 +02:00
Michael Biebl
29f3265584 units: simplify rescue.service and emergency.service (#5623)
The emergency.service and rescue.service units have become rather
convoluted. We spawn multiple shells and the help text spans multiple lines
which makes the units hard to read.

Move the logic into a single shell script and call that via ExecStart.
2017-03-22 23:37:06 -04:00
Daniel Molkentin
7e3ba38919 units: do not throw a warning in emergency mode if plymouth is not installed (#5528)
Ideally, plymouth should only be referenced via dependencies,
not ExecStartPre's. This at least avoids the confusing error message
on minimal installations that do not carry plymouth.
2017-03-17 12:13:19 +01:00
Lennart Poettering
6f696ca30c emergency.service: Don't say "Welcome" when it's an emergency (#3569)
Quoting @cgwalters:

        Just uploading this as an RFC.  Now I know reading the code that systemd says
        `Welcome to $OS` as a generic thing, but my initial impression on seeing this
        was that it was almost sarcastic =)

        Let's say "You are in emergency mode" as a more neutral/less excited phrase.

This patch is based on #3556, but makes the same change for rescue mode.
2016-06-21 16:09:47 +02:00
Martin Pitt
3136ec90ad Stop syslog.socket when entering emergency mode (#3130)
When enabling ForwardToSyslog=yes, the syslog.socket is active when entering
emergency mode. Any log message then triggers the start of rsyslog.service (or
other implementation) along with its dependencies such as local-fs.target and
sysinit.target. As these might fail themselves (e. g. faulty /etc/fstab), this
breaks the emergency mode.

This causes syslog.socket to fail with "Failed to queue service startup job:
Transition is destructive".

Add Conflicts=syslog.socket to emergency.service to make sure the socket is
stopped when emergency.service is started.

Fixes #266
2016-04-27 10:34:24 +02:00
Lennart Poettering
cde3d68750 units: don't fail if /root doesn't exist for shell units
As discussed on the ML:

http://lists.freedesktop.org/archives/systemd-devel/2016-January/035594.html
2016-01-17 20:47:46 +01:00
Martin Pitt
ac59f0c12c units: emergency.service: wait for plymouth to shut down
Merely calling "plymouth quit" isn't sufficient, as plymouth needs some time to
shut down. This needs plymouth --wait (which is a no-op when it's not running).

Fixes invisible emergency shell with plymouth running endlessly.

https://launchpad.net/bugs/1471258
2015-07-10 05:43:52 +02:00
Zbigniew Jędrzejewski-Szmek
903e7c37ca Use "new" --job-mode= option in more places
--irreversible/--ignore-dependencies/--fail are deprececated since 4dc5b821ae.

Also add shell completions for --jobs-mode.
2015-05-18 01:08:09 -04:00
Cristian Rodríguez
66b0e0e0e3 build-sys: lookup for sulogin, it might not be in /sbin 2015-01-23 19:09:37 +01:00
Zbigniew Jędrzejewski-Szmek
42377d6bb7 units: update rescue.service and emergency.service
^D works in emergency.service too. One needs to log in when in rescue
mode too.
2014-08-31 00:04:44 -04:00
Zbigniew Jędrzejewski-Szmek
87502e5868 units: make emergency.service conflict with rescue.service
They both use StandardInput=tty-force so they cannot be run
concurrently.

https://bugs.freedesktop.org/show_bug.cgi?id=82778
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=757072
2014-08-30 22:33:40 -04:00
Michal Sekletar
d338151228 units: make ExecStopPost action part of ExecStart
Currently after exiting rescue shell we isolate default target. User
might want to isolate to some other target than default one. However
issuing systemctl isolate command to desired target would bring system
to default target as a consequence of running ExecStopPost action.

Having common ancestor for rescue shell and possible followup systemctl
default command should fix this. If user exits rescue shell we will
proceed with isolating default target, otherwise, on manual isolate,
parent shell process is terminated and we don't isolate default target,
but target chosen by user.

Suggested-by: Michal Schmidt <mschmidt@redhat.com>
2014-07-09 18:21:04 +02:00
Lennart Poettering
82659fd757 core: optionally send SIGHUP in addition to the configured kill signal
This is useful to fake session ends for processes like shells.
2013-07-30 01:54:59 +02:00
Lennart Poettering
95ec8647c7 journal: recommend journalctl -x more often 2012-11-16 03:03:54 +01:00
Zbigniew Jędrzejewski-Szmek
aa6eba407b units: reword rescue mode hints
Do not suggest to the user that commands can be issued before
logging in.

sulogin prints it own message, which mentions ^D, so there's no need
to repeat it here.
2012-10-28 02:14:00 +02:00
Lennart Poettering
4474d8abd0 units: also add journalctl suggestion to emergency.service
More often than not we enter emergency.service due to fsck failure, so
it makes sense to direct people to the journal to debug those.
2012-10-23 00:12:33 +02:00
Lennart Poettering
744881d173 man: add Documentation= tags to all kinds of missing units 2012-06-27 01:07:04 +02:00
Lennart Poettering
49dbfa7b2b units: introduce new Documentation= field and make use of it everywhere
This should help making the boot process a bit easier to explore and
understand for the administrator. The simple idea is that "systemctl
status" now shows a link to documentation alongside the other status and
decriptionary information of a service.

This patch adds the necessary fields to all our shipped units if we have
proper documentation for them.
2012-05-21 15:14:51 +02:00
Lennart Poettering
f2b6878955 service: introduce Type=idle and use it for gettys
Type=idle is much like Type=simple, however between the fork() and the
exec() in the child we wait until PID 1 informs us that no jobs are
left.

This is mostly a cosmetic fix to make gettys appear only after all boot
output is finished and complete.

Note that this does not impact the normal job logic as we do not delay
the completion of any jobs. We just delay the invocation of the actual
binary, and only for services that otherwise would be of Type=simple.
2012-04-24 14:42:24 +02:00
Lennart Poettering
5430f7f2bc relicense to LGPLv2.1 (with exceptions)
We finally got the OK from all contributors with non-trivial commits to
relicense systemd from GPL2+ to LGPL2.1+.

Some udev bits continue to be GPL2+ for now, but we are looking into
relicensing them too, to allow free copy/paste of all code within
systemd.

The bits that used to be MIT continue to be MIT.

The big benefit of the relicensing is that closed source code may now
link against libsystemd-login.so and friends.
2012-04-12 00:24:39 +02:00
Dave Reisner
9cf2578683 units/: use @SYSTEMCTL@ instead of hardcoded paths
Especially in the case of --enable-split-usr, several units will point
to the wrong location for systemctl. Use @SYSTEMCTL@ which will always
contain the proper path.
2012-04-04 06:46:35 +02:00