mirror of
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18c7a1eb6c
The existing text must have been written before systemd-sysv-generator was created. We don't create the wrappers dynamically since a long time. Also add more links and make the description conditional on "if compat is enabled".
77 lines
3.2 KiB
XML
77 lines
3.2 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="systemd-sysv-generator" conditional="HAVE_SYSV_COMPAT">
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<refentryinfo>
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<title>systemd-sysv-generator</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-sysv-generator</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-sysv-generator</refname>
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<refpurpose>Unit generator for SysV init scripts</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/usr/lib/systemd/system-generators/systemd-sysv-generator</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-sysv-generator</filename> is a generator
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that creates wrapper .service units for
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<ulink url="https://savannah.nongnu.org/projects/sysvinit">SysV init</ulink>
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scripts in <filename>/etc/init.d/*</filename> at boot and when
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configuration of the system manager is reloaded. This allows
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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to support them similarly to native units.</para>
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<para><ulink url="http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html">LSB headers</ulink>
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in SysV init scripts are interpreted, and the ordering specified
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in the header is turned into dependencies between the generated
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unit and other units. The LSB facilities
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<literal>$remote_fs</literal>, <literal>$network</literal>,
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<literal>$named</literal>, <literal>$portmap</literal>,
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<literal>$time</literal> are supported and will be turned into
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dependencies on specific native systemd targets. See
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<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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for more details.</para>
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<para>Note that compatibility is quite comprehensive but not 100%, for more details see <ulink
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url="https://www.freedesktop.org/wiki/Software/systemd/Incompatibilities">Incompatibilities with
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SysV</ulink>.</para>
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<para>SysV runlevels have corresponding systemd targets
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(<filename>runlevel<replaceable>X</replaceable>.target</filename>).
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The wrapper unit that is generated will be wanted by those targets
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which correspond to runlevels for which the script is
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enabled.</para>
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<para><command>systemd</command> does not support SysV scripts as
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part of early boot, so all wrapper units are ordered after
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<filename>basic.target</filename>.</para>
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<para><filename>systemd-sysv-generator</filename> implements
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<citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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