mirror of
https://github.com/systemd/systemd.git
synced 2024-10-29 21:55:36 +03:00
82 lines
4.2 KiB
XML
82 lines
4.2 KiB
XML
<?xml version="1.0"?>
|
|
<!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
|
|
<refentry id="systemd-run-generator">
|
|
|
|
<refentryinfo>
|
|
<title>systemd-run-generator</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>systemd-run-generator</refentrytitle>
|
|
<manvolnum>8</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>systemd-run-generator</refname>
|
|
<refpurpose>Generator for invoking commands specified on the kernel command line as system service</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename>/usr/lib/systemd/system-generators/systemd-run-generator</filename></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para><filename>systemd-run-generator</filename> is a generator
|
|
that reads the kernel command line and understands three
|
|
options:</para>
|
|
|
|
<para>If the <option>systemd.run=</option> option is specified and followed by a command line, a unit named
|
|
<filename>kernel-command-line.service</filename> is generated for it and booted into. The service has
|
|
<varname>Type=oneshot</varname> set, and has <varname>SuccessAction=exit</varname> and
|
|
<varname>FailureAction=exit</varname> configured by default, thus ensuring that the system is shut down as soon as
|
|
the command completes. The exit status of the command line is propagated to the invoking container manager, if
|
|
this applies (which might propagate this further, to the calling shell — e.g.
|
|
<citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>7</manvolnum></citerefentry> does this). If
|
|
this option is used multiple times the unit file will contain multiple <varname>ExecStart=</varname> lines, to
|
|
execute all commands in order. The command is started as regular service, i.e. with
|
|
<varname>DefaultDependencies=</varname> on. </para>
|
|
|
|
<para>Use <option>systemd.run_success_action=</option> and <option>systemd.run_failure_action=</option> to tweak
|
|
how to react to the process completing. In particular assigning <literal>none</literal> will leave the system
|
|
running after the command completes. For further details on supported arguments, see
|
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
|
|
|
|
<para><filename>systemd-run-generator</filename> implements
|
|
<citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Example</title>
|
|
|
|
<para>Use a command like the following to add a user to the user database inside a container run with
|
|
<citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>7</manvolnum></citerefentry>:</para>
|
|
|
|
<programlisting># systemd-nspawn -D mycontainer -b systemd.run='"adduser test"'</programlisting>
|
|
<para>(Note the requirement for double quoting in the command line above. The first level of quoting ('') is
|
|
processed and removed by the command shell used to invoke <command>systemd-nspawn</command>. The second level of
|
|
quoting ("") is propagated to the kernel command line of the container and processed and removed by
|
|
<command>systemd-run-generator</command>. Both together make sure both words of the specified command line
|
|
<command>adduser test</command> end up in the generated unit file together and are neither split apart by the
|
|
command shell nor by the generator.)</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>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|