mirror of
https://github.com/systemd/systemd
synced 2024-09-29 21:04:12 +00:00
804874d26a
Currently inhibitors are bypassed unless an explicit request is made to check for them, or even in that case when the requestor is root or the same uid as the holder of the lock. But in many cases this makes it impractical to rely on inhibitor locks. For example, in Debian there are several convoluted and archaic workarounds that divert systemctl/reboot to some hacky custom scripts to try and enforce blocking accidental reboots, when it's not expected that the requestor will remember to specify the command line option to enable checking for active inhibitor locks. Also in many cases one wants to ensure that locks taken by a user are respected by actions initiated by that same user. Change logind so that inhibitors checks are not skipped in these cases, and systemctl so that locks are checked in order to show a friendly error message rather than "permission denied". Add new block-weak and delay-weak modes that keep the previous behaviour unchanged.
153 lines
5.7 KiB
XML
153 lines
5.7 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
|
|
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
|
|
|
|
<refentry id="systemd-inhibit"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refentryinfo>
|
|
<title>systemd-inhibit</title>
|
|
<productname>systemd</productname>
|
|
</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</command> <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>COMMAND</arg> <arg choice="opt" rep="repeat">ARGUMENTS</arg>
|
|
</cmdsynopsis>
|
|
<cmdsynopsis>
|
|
<command>systemd-inhibit</command> <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>--list</arg>
|
|
</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
|
|
<ulink url="https://systemd.io/INHIBITOR_LOCKS">Inhibitor Locks</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/soft-reboot,
|
|
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 <literal>block</literal>, <literal>delay</literal>,
|
|
<literal>block-weak</literal> or <literal>delay-weak</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>. In addition, the weak variants will automatically and silently be
|
|
bypassed under some circumstances.</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="no-ask-password" />
|
|
<xi:include href="standard-options.xml" xpointer="no-pager" />
|
|
<xi:include href="standard-options.xml" xpointer="no-legend" />
|
|
<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>
|
|
|
|
<xi:include href="common-variables.xml" />
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para><simplelist type="inline">
|
|
<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
|
|
<member><citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry></member>
|
|
</simplelist></para>
|
|
</refsect1>
|
|
|
|
</refentry>
|