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systemd/man/systemd-inhibit.xml
Tom Gundersen 12b42c7667 man: revert dynamic paths for split-usr setups
This did not really work out as we had hoped. Trying to do this upstream
introduced several problems that probably makes it better suited as a
downstream patch after all. At any rate, it is not releaseable in the
current state, so we at least need to revert this before the release.

 * by adjusting the path to binaries, but not do the same thing to the
   search path we end up with inconsistent man-pages. Adjusting the search
   path too would be quite messy, and it is not at all obvious that this is
   worth the effort, but at any rate it would have to be done before we
   could ship this.

 * this means that distributed man-pages does not make sense as they depend
   on config options, and for better or worse we are still distributing
   man pages, so that is something that definitely needs sorting out before
   we could ship with this patch.

 * we have long held that split-usr is only minimally supported in order
   to boot, and something we hope will eventually go away. So before we start
   adding even more magic/effort in order to make this work nicely, we should
   probably question if it makes sense at all.
2015-06-18 19:47:44 +02:00

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<?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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<refentry id="systemd-inhibit"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-inhibit</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-inhibit</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-inhibit</refname>
<refpurpose>Execute a program with an inhibition lock taken</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>systemd-inhibit <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>COMMAND</arg> <arg choice="opt" rep="repeat">ARGUMENTS</arg></command>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-inhibit <arg choice="opt" rep="repeat">OPTIONS</arg> --list</command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-inhibit</command> may be used to execute a
program with a shutdown, sleep or idle inhibitor lock taken. The
lock will be acquired before the specified command line is
executed and released afterwards.</para>
<para>Inhibitor locks may be used to block or delay system sleep
and shutdown requests from the user, as well as automatic idle
handling of the OS. This is useful to avoid system suspends while
an optical disc is being recorded, or similar operations that
should not be interrupted.</para>
<para>For more information see the <ulink
url="http://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
Lock Developer Documentation</ulink>.</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>--what=</option></term>
<listitem><para>Takes a colon-separated list of one or more
operations to inhibit:
<literal>shutdown</literal>,
<literal>sleep</literal>,
<literal>idle</literal>,
<literal>handle-power-key</literal>,
<literal>handle-suspend-key</literal>,
<literal>handle-hibernate-key</literal>,
<literal>handle-lid-switch</literal>,
for inhibiting reboot/power-off/halt/kexec,
suspending/hibernating, the automatic idle detection, or the
low-level handling of the power/sleep key and the lid switch,
respectively. If omitted, defaults to
<literal>idle:sleep:shutdown</literal>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--who=</option></term>
<listitem><para>Takes a short, human-readable descriptive
string for the program taking the lock. If not passed,
defaults to the command line string.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--why=</option></term>
<listitem><para>Takes a short, human-readable descriptive
string for the reason for taking the lock. Defaults to
"Unknown reason".</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--mode=</option></term>
<listitem><para>Takes either <literal>block</literal> or
<literal>delay</literal> and describes how the lock is
applied. If <literal>block</literal> is used (the default),
the lock prohibits any of the requested operations without
time limit, and only privileged users may override it. If
<literal>delay</literal> is used, the lock can only delay the
requested operations for a limited time. If the time elapses,
the lock is ignored and the operation executed. The time limit
may be specified in
<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
Note that <literal>delay</literal> is only available for
<literal>sleep</literal> and
<literal>shutdown</literal>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--list</option></term>
<listitem><para>Lists all active inhibition locks instead of
acquiring one.</para></listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>Returns the exit status of the executed program.</para>
</refsect1>
<refsect1>
<title>Example</title>
<programlisting># systemd-inhibit wodim foobar.iso</programlisting>
<para>This burns the ISO image
<filename>foobar.iso</filename> on a CD using
<citerefentry project='man-pages'><refentrytitle>wodim</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
and inhibits system sleeping, shutdown and idle while
doing so.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>