systemd/units/emergency.service.in

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

[Unit]
Description=Emergency Shell
Documentation=man:sulogin(8)
DefaultDependencies=no
Conflicts=shutdown.target
Conflicts=rescue.service
Before=shutdown.target

[Service]
Environment=HOME=/root
WorkingDirectory=/root
ExecStartPre=-/bin/plymouth quit
ExecStartPre=-/bin/echo -e 'Welcome to emergency mode! After logging in, type "journalctl -xb" to view\\nsystem logs, "systemctl reboot" to reboot, "systemctl default" or ^D to\\ntry again to boot into default mode.'
ExecStart=-/bin/sh -c "/sbin/sulogin; @SYSTEMCTL@ --fail --no-block default"
Type=idle
StandardInput=tty-force
StandardOutput=inherit
StandardError=inherit
KillMode=process
IgnoreSIGPIPE=no
SendSIGHUP=yes
units: move a number of units into the tarball 2010-05-16 22:49:41 +04:00			`# This file is part of systemd.`
			`#`
			`# systemd is free software; you can redistribute it and/or modify it`
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 02:20:58 +04:00			`# under the terms of the GNU Lesser General Public License as published by`
			`# the Free Software Foundation; either version 2.1 of the License, or`
units: move a number of units into the tarball 2010-05-16 22:49:41 +04:00			`# (at your option) any later version.`

units: rename [Meta] section to [Unit] 2010-04-16 01:20:17 +04:00			`[Unit]`
units: install a few basic units by default 2010-04-13 07:18:12 +04:00			`Description=Emergency Shell`
man: add Documentation= tags to all kinds of missing units 2012-06-27 03:07:04 +04:00			`Documentation=man:sulogin(8)`
units: update shipped unit files for DefaultDependencies= 2010-07-03 21:53:37 +04:00			`DefaultDependencies=no`
units: make fedora/single.service standard and rename it to rescue.service 2010-10-29 06:09:36 +04:00			`Conflicts=shutdown.target`
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 2014-08-31 06:33:40 +04:00			`Conflicts=rescue.service`
units: make fedora/single.service standard and rename it to rescue.service 2010-10-29 06:09:36 +04:00			`Before=shutdown.target`
units: install a few basic units by default 2010-04-13 07:18:12 +04:00
			`[Service]`
units: set HOME=/root when running shells 2010-09-10 18:53:53 +04:00			`Environment=HOME=/root`
units: set working directory to /root for sulogin, since sulogin is crazy 2010-09-10 19:11:29 +04:00			`WorkingDirectory=/root`
rescue: terminate plymouth entirely when going into rescue mode 2011-02-23 20:42:08 +03:00			`ExecStartPre=-/bin/plymouth quit`
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 06:34:56 +04:00			`ExecStartPre=-/bin/echo -e 'Welcome to emergency mode! After logging in, type "journalctl -xb" to view\\nsystem logs, "systemctl reboot" to reboot, "systemctl default" or ^D to\\ntry again to boot into default mode.'`
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> 2014-07-08 19:42:23 +04:00			`ExecStart=-/bin/sh -c "/sbin/sulogin; @SYSTEMCTL@ --fail --no-block default"`
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 16:28:00 +04:00			`Type=idle`
units: introduce emergency.target 2010-07-13 01:49:20 +04:00			`StandardInput=tty-force`
units: direct stdout/stderr of rescue shells to tty With output of services going to syslog by default now, the rescue shell units need to direct their output to tty explicitly. Specify stderr too, just in case. 2011-09-20 14:11:04 +04:00			`StandardOutput=inherit`
			`StandardError=inherit`
exec: drop process group kill mode since it has little use and confuses the user 2011-03-30 01:31:38 +04:00			`KillMode=process`
service: ignore SIGPIPE by default 2012-02-09 06:18:04 +04:00			`IgnoreSIGPIPE=no`
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 03:54:59 +04:00			`SendSIGHUP=yes`