man/systemd-sysv-generator.xml

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