mirror of
https://github.com/systemd/systemd.git
synced 2024-11-28 04:33:36 +08:00
113 lines
4.5 KiB
XML
113 lines
4.5 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
|
|
<!--
|
|
This file is part of systemd.
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
-->
|
|
|
|
<refentry id="systemd.target">
|
|
<refentryinfo>
|
|
<title>systemd.target</title>
|
|
<productname>systemd</productname>
|
|
|
|
<authorgroup>
|
|
<author>
|
|
<contrib>Developer</contrib>
|
|
<firstname>Lennart</firstname>
|
|
<surname>Poettering</surname>
|
|
<email>lennart@poettering.net</email>
|
|
</author>
|
|
</authorgroup>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>systemd.target</refentrytitle>
|
|
<manvolnum>5</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>systemd.target</refname>
|
|
<refpurpose>Target unit configuration</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename><replaceable>target</replaceable>.target</filename></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>A unit configuration file whose name ends in
|
|
<literal>.target</literal> encodes information about a target unit
|
|
of systemd, which is used for grouping units and as well-known
|
|
synchronization points during start-up.</para>
|
|
|
|
<para>This unit type has no specific options. See
|
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
|
for the common options of all unit configuration files. The common
|
|
configuration items are configured in the generic [Unit] and
|
|
[Install] sections. A separate [Target] section does not exist,
|
|
since no target-specific options may be configured.</para>
|
|
|
|
<para>Target units do not offer any additional functionality on
|
|
top of the generic functionality provided by units. They exist
|
|
merely to group units via dependencies (useful as boot targets),
|
|
and to establish standardized names for synchronization points
|
|
used in dependencies between units. Among other things, target
|
|
units are a more flexible replacement for SysV runlevels in the
|
|
classic SysV init system. (And for compatibility reasons special
|
|
target units such as <filename>runlevel3.target</filename> exist
|
|
which are used by the SysV runlevel compatibility code in systemd.
|
|
See
|
|
<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
|
|
for details).</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Automatic Dependencies</title>
|
|
|
|
<para>Unless <varname>DefaultDependencies=</varname> is set to
|
|
<option>no</option> in either of releated units or an explicit ordering
|
|
dependency is already defined, target units will implicitly complement all
|
|
configured dependencies of type <varname>Wants=</varname> or
|
|
<varname>Requires=</varname> with dependencies of type
|
|
<varname>After=</varname>. Note that <varname>Wants=</varname> or
|
|
<varname>Requires=</varname> must be defined in the target unit itself — if
|
|
you for example define <varname>Wants=</varname>some.target in
|
|
some.service, the implicit ordering will not be added.</para>
|
|
|
|
<para>All target units automatically gain <varname>Conflicts=</varname>
|
|
dependency against shutdown.target unless <varname>DefaultDependencies=</varname>
|
|
is set to <option>no</option>.</para>
|
|
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|