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198 lines
8.4 KiB
XML
198 lines
8.4 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-inhibit">
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<refentryinfo>
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<title>systemd-inhibit</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-inhibit</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-inhibit</refname>
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<refpurpose>Execute a program with an inhibition lock taken</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-inhibit <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>COMMAND</arg> <arg choice="opt" rep="repeat">ARGUMENTS</arg></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>systemd-inhibit <arg choice="opt" rep="repeat">OPTIONS</arg> --list</command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-inhibit</command> may be used
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to execute a program with a shutdown, sleep or idle
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inhibitor lock taken. The lock will be acquired before
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the specified command line is executed and released
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afterwards.</para>
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<para>Inhibitor locks may be used to block or delay
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system sleep and shutdown requests from the user, as well
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as automatic idle handling of the OS. This is useful
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to avoid system suspends while an optical disc is
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being recorded, or similar operations that should not
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be interrupted.</para>
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<para>For more information see the <ulink
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url="http://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
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Lock Developer Documentation</ulink>.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>-h</option></term>
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<term><option>--help</option></term>
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<listitem><para>Prints a short help
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text and exits.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--version</option></term>
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<listitem><para>Prints a short version
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string and exits.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--what=</option></term>
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<listitem><para>Takes a colon
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separated list of one or more
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operations to inhibit:
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<literal>shutdown</literal>,
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<literal>sleep</literal>,
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<literal>idle</literal>, for
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inhibiting
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reboot/power-off/halt/kexec,
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suspending/hibernating, resp. the
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automatic idle detection. If ommitted
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defaults to
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<literal>idle:sleep:shutdown</literal>,
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i.e. takes all possible
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locks.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--who=</option></term>
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<listitem><para>Takes a short human
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readable descriptive string for the
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program taking the lock. If not passed
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defaults to the command line
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string.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--why=</option></term>
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<listitem><para>Takes a short human
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readable descriptive string for the
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reason for taking the lock. Defaults
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to "Unknown reason".</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--mode=</option></term>
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<listitem><para>Takes either
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<literal>block</literal> or
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<literal>delay</literal> and describes
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how the lock is applied. If
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<literal>block</literal> is used (the
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default), the lock prohibits any of
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the requested operations without time
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limit, and only privileged users may
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override it. If
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<literal>delay</literal> is used, the
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lock can only delay the requested
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operations for a limited time. If the
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time elapses the lock is ignored and
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the operation executed. The time limit
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may be specified in
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<citerefentry><refentrytitle>systemd-logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--list</option></term>
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<listitem><para>Lists all active
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inhibition locks instead of acquiring
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one.</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>Returns the exit status of the executed program.</para>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<programlisting># systemd-inhibit wodim foobar.iso</programlisting>
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<para>This burns the ISO image
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<filename>foobar.iso</filename> on a CD using
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<citerefentry><refentrytitle>wodim</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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and inhibits system sleeping, shutdown and idle while
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doing so.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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