man/systemd-sysv-generator.xml

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