systemd/man/systemd-halt.service.xml
Zbigniew Jędrzejewski-Szmek 909f413d3c man: always supply quotes around literals
When manpages are displayed on a terminal, <literal>s are indistinguishable
from surrounding text. Add quotes everywhere, remove duplicate quotes,
and tweak a few lists for consistent formatting.

https://bugzilla.redhat.com/show_bug.cgi?id=874631
2013-06-26 08:05:14 -04:00

120 lines
5.4 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">
<!--
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Copyright 2012 Lennart Poettering
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<refentry id="systemd-halt.service">
<refentryinfo>
<title>systemd-halt.service</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</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>
</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. Similar,
<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>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>
</para>
</refsect1>
</refentry>