chiark / gitweb /
sysusers: split users for remote into separate file
[elogind.git] / man / sd_booted.xml
1 <?xml version='1.0'?> <!--*-nxml-*-->
2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
3         "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
4
5 <!--
6   This file is part of systemd.
7
8   Copyright 2010 Lennart Poettering
9
10   systemd is free software; you can redistribute it and/or modify it
11   under the terms of the GNU Lesser General Public License as published by
12   the Free Software Foundation; either version 2.1 of the License, or
13   (at your option) any later version.
14
15   systemd is distributed in the hope that it will be useful, but
16   WITHOUT ANY WARRANTY; without even the implied warranty of
17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18   Lesser General Public License for more details.
19
20   You should have received a copy of the GNU Lesser General Public License
21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 -->
23
24 <refentry id="sd_booted"
25         xmlns:xi="http://www.w3.org/2001/XInclude">
26
27         <refentryinfo>
28                 <title>sd_booted</title>
29                 <productname>systemd</productname>
30
31                 <authorgroup>
32                         <author>
33                                 <contrib>Developer</contrib>
34                                 <firstname>Lennart</firstname>
35                                 <surname>Poettering</surname>
36                                 <email>lennart@poettering.net</email>
37                         </author>
38                 </authorgroup>
39         </refentryinfo>
40
41         <refmeta>
42                 <refentrytitle>sd_booted</refentrytitle>
43                 <manvolnum>3</manvolnum>
44         </refmeta>
45
46         <refnamediv>
47                 <refname>sd_booted</refname>
48                 <refpurpose>Test whether the system is running the systemd init system</refpurpose>
49         </refnamediv>
50
51         <refsynopsisdiv>
52                 <funcsynopsis>
53                         <funcsynopsisinfo>#include &lt;systemd/sd-daemon.h&gt;</funcsynopsisinfo>
54
55                         <funcprototype>
56                                 <funcdef>int <function>sd_booted</function></funcdef>
57                                 <paramdef>void</paramdef>
58                         </funcprototype>
59                 </funcsynopsis>
60         </refsynopsisdiv>
61
62         <refsect1>
63                 <title>Description</title>
64                 <para><function>sd_booted()</function> checks whether
65                 the system was booted up using the systemd init system.</para>
66         </refsect1>
67
68         <refsect1>
69                 <title>Return Value</title>
70
71                 <para>On failure, this call returns a negative
72                 errno-style error code. If the system was booted up
73                 with systemd as init system, this call returns a
74                 positive return value, zero otherwise.</para>
75         </refsect1>
76
77         <refsect1>
78                 <title>Notes</title>
79
80                 <xi:include href="libsystemd-pkgconfig.xml" xpointer="pkgconfig-text"/>
81
82                 <para>Internally, this function checks whether the
83                 directory <filename>/run/systemd/system/</filename>
84                 exists. A simple check like this can also be
85                 implemented trivially in shell or any other
86                 language.</para>
87         </refsect1>
88
89         <refsect1>
90                 <title>See Also</title>
91                 <para>
92                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
93                         <citerefentry><refentrytitle>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry>
94                 </para>
95         </refsect1>
96
97 </refentry>