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1 | <?xml version='1.0'?> <!--*-nxml-*--> |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
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3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [ |
4 | <!ENTITY % entities SYSTEM "custom-entities.ent" > | |
5 | %entities; | |
6 | ]> | |
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7 | |
8 | <!-- | |
9 | This file is part of systemd. | |
10 | ||
11 | Copyright 2012 Lennart Poettering | |
19adb8a3 | 12 | Copyright 2013 Zbigniew Jędrzejewski-Szmek |
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13 | |
14 | systemd is free software; you can redistribute it and/or modify it | |
15 | under the terms of the GNU Lesser General Public License as published by | |
16 | the Free Software Foundation; either version 2.1 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | systemd is distributed in the hope that it will be useful, but | |
20 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
22 | Lesser General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU Lesser General Public License | |
25 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
26 | --> | |
27 | ||
dfdebb1b | 28 | <refentry id="systemd-suspend.service" |
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29 | xmlns:xi="http://www.w3.org/2001/XInclude"> |
30 | ||
31 | <refentryinfo> | |
32 | <title>systemd-suspend.service</title> | |
33 | <productname>systemd</productname> | |
34 | ||
35 | <authorgroup> | |
36 | <author> | |
37 | <contrib>Developer</contrib> | |
38 | <firstname>Lennart</firstname> | |
39 | <surname>Poettering</surname> | |
40 | <email>lennart@poettering.net</email> | |
41 | </author> | |
42 | </authorgroup> | |
43 | </refentryinfo> | |
44 | ||
45 | <refmeta> | |
46 | <refentrytitle>systemd-suspend.service</refentrytitle> | |
47 | <manvolnum>8</manvolnum> | |
48 | </refmeta> | |
49 | ||
50 | <refnamediv> | |
51 | <refname>systemd-suspend.service</refname> | |
52 | <refname>systemd-hibernate.service</refname> | |
53 | <refname>systemd-hybrid-sleep.service</refname> | |
54 | <refname>systemd-sleep</refname> | |
55 | <refpurpose>System sleep state logic</refpurpose> | |
56 | </refnamediv> | |
57 | ||
58 | <refsynopsisdiv> | |
59 | <para><filename>systemd-suspend.service</filename></para> | |
60 | <para><filename>systemd-hibernate.service</filename></para> | |
61 | <para><filename>systemd-hybrid-sleep.service</filename></para> | |
681eb9cf | 62 | <para><filename>&rootlibexecdir;/system-sleep</filename></para> |
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63 | </refsynopsisdiv> |
64 | ||
65 | <refsect1> | |
66 | <title>Description</title> | |
67 | ||
68 | <para><filename>systemd-suspend.service</filename> is a system | |
69 | service that is pulled in by <filename>suspend.target</filename> | |
70 | and is responsible for the actual system suspend. Similarly, | |
71 | <filename>systemd-hibernate.service</filename> is pulled in by | |
72 | <filename>hibernate.target</filename> to execute the actual | |
73 | hibernation. Finally, | |
74 | <filename>systemd-hybrid-sleep.service</filename> is pulled in by | |
75 | <filename>hybrid-sleep.target</filename> to execute hybrid | |
76 | hibernation with system suspend.</para> | |
77 | ||
78 | <para>Immediately before entering system suspend and/or | |
79 | hibernation <filename>systemd-suspend.service</filename> (and the | |
80 | other mentioned units, respectively) will run all executables in | |
681eb9cf | 81 | <filename>&rootlibexecdir;/system-sleep/</filename> and pass two |
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82 | arguments to them. The first argument will be |
83 | <literal>pre</literal>, the second either | |
84 | <literal>suspend</literal>, <literal>hibernate</literal>, or | |
85 | <literal>hybrid-sleep</literal> depending on the chosen action. | |
86 | Immediately after leaving system suspend and/or hibernation the | |
87 | same executables are run, but the first argument is now | |
88 | <literal>post</literal>. All executables in this directory are | |
89 | executed in parallel, and execution of the action is not continued | |
90 | until all executables have finished.</para> | |
91 | ||
92 | <para>Note that scripts or binaries dropped in | |
681eb9cf | 93 | <filename>&rootlibexecdir;/system-sleep/</filename> are intended |
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94 | for local use only and should be considered hacks. If applications |
95 | want to be notified of system suspend/hibernation and resume, | |
96 | there are much nicer interfaces available.</para> | |
97 | ||
98 | <para>Note that | |
99 | <filename>systemd-suspend.service</filename>, | |
100 | <filename>systemd-hibernate.service</filename>, and | |
101 | <filename>systemd-hybrid-sleep.service</filename> | |
102 | should never be executed directly. Instead, trigger system sleep | |
103 | states with a command such as <literal>systemctl suspend</literal> | |
104 | or similar.</para> | |
105 | ||
106 | <para>Internally, this service will echo a string like | |
107 | <literal>mem</literal> into <filename>/sys/power/state</filename>, | |
108 | to trigger the actual system suspend. What exactly is written | |
109 | where can be configured in the <literal>[Sleep]</literal> section | |
681eb9cf | 110 | of <filename>&pkgsysconfdir;/sleep.conf</filename> or a |
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111 | <filename>sleep.conf.d</filename> file. See |
112 | <citerefentry><refentrytitle>systemd-sleep.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>. | |
113 | </para> | |
114 | </refsect1> | |
115 | ||
116 | <refsect1> | |
117 | <title>Options</title> | |
118 | ||
119 | <para><command>systemd-sleep</command> understands the | |
120 | following commands:</para> | |
121 | ||
122 | <variablelist> | |
123 | <xi:include href="standard-options.xml" xpointer="help" /> | |
124 | <xi:include href="standard-options.xml" xpointer="version" /> | |
125 | ||
126 | <varlistentry> | |
127 | <term><option>suspend</option></term> | |
128 | <term><option>hibernate</option></term> | |
129 | <term><option>hybrid-sleep</option></term> | |
130 | ||
131 | <listitem><para>Suspend, hibernate, or put the system to | |
132 | hybrid sleep.</para> | |
133 | </listitem> | |
134 | </varlistentry> | |
135 | </variablelist> | |
136 | </refsect1> | |
137 | ||
138 | <refsect1> | |
139 | <title>See Also</title> | |
140 | <para> | |
141 | <citerefentry><refentrytitle>systemd-sleep.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
142 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
143 | <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
144 | <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>, | |
145 | <citerefentry><refentrytitle>systemd-halt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
146 | </para> | |
147 | </refsect1> | |
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148 | |
149 | </refentry> |