1<?xml version='1.0'?> <!--*-nxml-*--> 2<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" 3 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> 4<!-- SPDX-License-Identifier: LGPL-2.1-or-later --> 5 6<refentry id="sd_booted" 7 xmlns:xi="http://www.w3.org/2001/XInclude"> 8 9 <refentryinfo> 10 <title>sd_booted</title> 11 <productname>systemd</productname> 12 </refentryinfo> 13 14 <refmeta> 15 <refentrytitle>sd_booted</refentrytitle> 16 <manvolnum>3</manvolnum> 17 </refmeta> 18 19 <refnamediv> 20 <refname>sd_booted</refname> 21 <refpurpose>Test whether the system is running the systemd init system</refpurpose> 22 </refnamediv> 23 24 <refsynopsisdiv> 25 <funcsynopsis> 26 <funcsynopsisinfo>#include <systemd/sd-daemon.h></funcsynopsisinfo> 27 28 <funcprototype> 29 <funcdef>int <function>sd_booted</function></funcdef> 30 <paramdef>void</paramdef> 31 </funcprototype> 32 </funcsynopsis> 33 </refsynopsisdiv> 34 35 <refsect1> 36 <title>Description</title> 37 <para><function>sd_booted()</function> checks whether the system 38 was booted up using the systemd init system.</para> 39 </refsect1> 40 41 <refsect1> 42 <title>Return Value</title> 43 44 <para>On failure, this call returns a negative errno-style error 45 code. If the system was booted up with systemd as init system, 46 this call returns a positive return value, zero otherwise.</para> 47 </refsect1> 48 49 <refsect1> 50 <title>Notes</title> 51 52 <xi:include href="libsystemd-pkgconfig.xml" xpointer="pkgconfig-text"/> 53 54 <para>Internally, this function checks whether the directory 55 <filename>/run/systemd/system/</filename> exists. A simple check 56 like this can also be implemented trivially in shell or any other 57 language.</para> 58 </refsect1> 59 60 <refsect1> 61 <title>See Also</title> 62 <para> 63 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, 64 <citerefentry><refentrytitle>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry> 65 </para> 66 </refsect1> 67 68</refentry> 69