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Diffstat (limited to 'man/systemd-halt.service.xml')
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diff --git a/man/systemd-halt.service.xml b/man/systemd-halt.service.xml new file mode 100644 index 0000000000..6a6bfdc7d7 --- /dev/null +++ b/man/systemd-halt.service.xml @@ -0,0 +1,119 @@ +<?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"> + +<!-- + This file is part of systemd. + + Copyright 2012 Lennart Poettering + + 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. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +--> + +<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> |