man/systemd-sysv-generator.xml

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