man/systemd-sysv-generator.xml

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   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   4 <!--
   5   SPDX-License-Identifier: LGPL-2.1+
   6
   7   This file is part of systemd.
   8
   9   Copyright 2014 Zbigniew Jędrzejewski-Szmek
  10 -->
  11 <refentry id="systemd-sysv-generator" conditional="HAVE_SYSV_COMPAT">
  12
  13   <refentryinfo>
  14     <title>systemd-sysv-generator</title>
  15     <productname>systemd</productname>
  16
  17     <authorgroup>
  18       <author>
  19         <contrib>Documentation</contrib>
  20         <firstname>Zbigniew</firstname>
  21         <surname>Jędrzejewski-Szmek</surname>
  22         <email>zbyszek@in.waw.pl</email>
  23       </author>
  24     </authorgroup>
  25   </refentryinfo>
  26
  27   <refmeta>
  28     <refentrytitle>systemd-sysv-generator</refentrytitle>
  29     <manvolnum>8</manvolnum>
  30   </refmeta>
  31
  32   <refnamediv>
  33     <refname>systemd-sysv-generator</refname>
  34     <refpurpose>Unit generator for SysV init scripts</refpurpose>
  35   </refnamediv>
  36
  37   <refsynopsisdiv>
  38     <para><filename>/usr/lib/systemd/system-generators/systemd-sysv-generator</filename></para>
  39   </refsynopsisdiv>
  40
  41   <refsect1>
  42     <title>Description</title>
  43
  44     <para><filename>systemd-sysv-generator</filename> is a generator
  45     that creates wrapper .service units for
  46     <ulink url="https://savannah.nongnu.org/projects/sysvinit">SysV init</ulink>
  47     scripts in <filename>/etc/init.d/*</filename> at boot and when
  48     configuration of the system manager is reloaded. This will allow
  49     <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  50     to support them similarly to native units.</para>
  51
  52     <para><ulink url="http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html">LSB headers</ulink>
  53     in SysV init scripts are interpreted, and the ordering specified
  54     in the header is turned into dependencies between the generated
  55     unit and other units. The LSB facilities
  56     <literal>$remote_fs</literal>, <literal>$network</literal>,
  57     <literal>$named</literal>, <literal>$portmap</literal>,
  58     <literal>$time</literal> are supported and will be turned into
  59     dependencies on specific native systemd targets.  See
  60     <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>5</manvolnum></citerefentry>
  61     for more details.</para>
  62
  63     <para>SysV runlevels have corresponding systemd targets
  64     (<filename>runlevel<replaceable>X</replaceable>.target</filename>).
  65     The wrapper unit that is generated will be wanted by those targets
  66     which correspond to runlevels for which the script is
  67     enabled.</para>
  68
  69     <para><command>systemd</command> does not support SysV scripts as
  70     part of early boot, so all wrapper units are ordered after
  71     <filename>basic.target</filename>.</para>
  72
  73     <para><filename>systemd-sysv-generator</filename> implements
  74     <citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
  75   </refsect1>
  76
  77   <refsect1>
  78     <title>See Also</title>
  79     <para>
  80       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  81       <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  82       <citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>
  83     </para>
  84   </refsect1>
  85
  86 </refentry>