mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-12-24 21:34:08 +03:00
fdbbee37d5
Docbook styles required those to be present, even though the templates that we use did not show those names anywhere. But something changed semi-recently (I would suspect docbook templates, but there was only a minor version bump in recent years, and the changelog does not suggest anything related), and builds now work without those entries. Let's drop this dead weight. Tested with F26-F29, debian unstable. $ perl -i -0pe 's/\s*<authorgroup>.*<.authorgroup>//gms' man/*xml
97 lines
3.9 KiB
XML
97 lines
3.9 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
||
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
||
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
||
|
||
<!--
|
||
SPDX-License-Identifier: LGPL-2.1+
|
||
-->
|
||
|
||
<refentry id="systemd-halt.service">
|
||
|
||
<refentryinfo>
|
||
<title>systemd-halt.service</title>
|
||
<productname>systemd</productname>
|
||
</refentryinfo>
|
||
|
||
<refmeta>
|
||
<refentrytitle>systemd-halt.service</refentrytitle>
|
||
<manvolnum>8</manvolnum>
|
||
</refmeta>
|
||
|
||
<refnamediv>
|
||
<refname>systemd-halt.service</refname>
|
||
<refname>systemd-poweroff.service</refname>
|
||
<refname>systemd-reboot.service</refname>
|
||
<refname>systemd-kexec.service</refname>
|
||
<refname>systemd-shutdown</refname>
|
||
<refpurpose>System shutdown logic</refpurpose>
|
||
</refnamediv>
|
||
|
||
<refsynopsisdiv>
|
||
<para><filename>systemd-halt.service</filename></para>
|
||
<para><filename>systemd-poweroff.service</filename></para>
|
||
<para><filename>systemd-reboot.service</filename></para>
|
||
<para><filename>systemd-kexec.service</filename></para>
|
||
<para><filename>/usr/lib/systemd/systemd-shutdown</filename></para>
|
||
<para><filename>/usr/lib/systemd/system-shutdown/</filename></para>
|
||
</refsynopsisdiv>
|
||
|
||
<refsect1>
|
||
<title>Description</title>
|
||
|
||
<para><filename>systemd-halt.service</filename> is a system
|
||
service that is pulled in by <filename>halt.target</filename> and
|
||
is responsible for the actual system halt. Similarly,
|
||
<filename>systemd-poweroff.service</filename> is pulled in by
|
||
<filename>poweroff.target</filename>,
|
||
<filename>systemd-reboot.service</filename> by
|
||
<filename>reboot.target</filename> and
|
||
<filename>systemd-kexec.service</filename> by
|
||
<filename>kexec.target</filename> to execute the respective
|
||
actions.</para>
|
||
|
||
<para>When these services are run, they ensure that PID 1 is
|
||
replaced by the
|
||
<filename>/usr/lib/systemd/systemd-shutdown</filename> tool which
|
||
is then responsible for the actual shutdown. Before shutting down,
|
||
this binary will try to unmount all remaining file systems,
|
||
disable all remaining swap devices, detach all remaining storage
|
||
devices and kill all remaining processes.</para>
|
||
|
||
<para>It is necessary to have this code in a separate binary
|
||
because otherwise rebooting after an upgrade might be broken — the
|
||
running PID 1 could still depend on libraries which are not
|
||
available any more, thus keeping the file system busy, which then
|
||
cannot be re-mounted read-only.</para>
|
||
|
||
<para>Immediately before executing the actual system
|
||
halt/poweroff/reboot/kexec <filename>systemd-shutdown</filename>
|
||
will run all executables in
|
||
<filename>/usr/lib/systemd/system-shutdown/</filename> and pass
|
||
one arguments to them: either <literal>halt</literal>,
|
||
<literal>poweroff</literal>, <literal>reboot</literal> or
|
||
<literal>kexec</literal>, depending on the chosen action. All
|
||
executables in this directory are executed in parallel, and
|
||
execution of the action is not continued before all executables
|
||
finished.</para>
|
||
|
||
<para>Note that <filename>systemd-halt.service</filename> (and the
|
||
related units) should never be executed directly. Instead, trigger
|
||
system shutdown with a command such as <literal>systemctl
|
||
halt</literal> or suchlike.</para>
|
||
</refsect1>
|
||
|
||
<refsect1>
|
||
<title>See Also</title>
|
||
<para>
|
||
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>reboot</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>bootup</refentrytitle><manvolnum>7</manvolnum></citerefentry>
|
||
</para>
|
||
</refsect1>
|
||
|
||
</refentry>
|