mirror of
https://github.com/systemd/systemd.git
synced 2024-11-06 08:26:52 +03:00
5d4caf5654
We no longer allow early-boot init scripts, however in late boot the syslog socket and local mounts are established anyway, so let's simplify our dep graph a bit. If $syslog doesn't resolve to syslog.target anymore there's no reason to keep syslog.target around anymore. Let's remove it. Note that many 3rd party service unit files order themselves after syslog.target. These will be dangling dependencies now, which should be unproblematic, however.
777 lines
43 KiB
XML
777 lines
43 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.special">
|
|
|
|
<refentryinfo>
|
|
<title>systemd.special</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.special</refentrytitle>
|
|
<manvolnum>7</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>systemd.special</refname>
|
|
<refpurpose>Special systemd units</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename>basic.target</filename>,
|
|
<filename>bluetooth.target</filename>,
|
|
<filename>ctrl-alt-del.target</filename>,
|
|
<filename>cryptsetup.target</filename>,
|
|
<filename>dbus.service</filename>,
|
|
<filename>dbus.socket</filename>,
|
|
<filename>default.target</filename>,
|
|
<filename>display-manager.service</filename>,
|
|
<filename>emergency.target</filename>,
|
|
<filename>exit.target</filename>,
|
|
<filename>final.target</filename>,
|
|
<filename>getty.target</filename>,
|
|
<filename>graphical.target</filename>,
|
|
<filename>halt.target</filename>,
|
|
<filename>hibernate.target</filename>,
|
|
<filename>hybrid-sleep.target</filename>,
|
|
<filename>kbrequest.target</filename>,
|
|
<filename>kexec.target</filename>,
|
|
<filename>local-fs.target</filename>,
|
|
<filename>local-fs-pre.target</filename>,
|
|
<filename>multi-user.target</filename>,
|
|
<filename>network.target</filename>,
|
|
<filename>nss-lookup.target</filename>,
|
|
<filename>nss-user-lookup.target</filename>,
|
|
<filename>poweroff.target</filename>,
|
|
<filename>printer.target</filename>,
|
|
<filename>reboot.target</filename>,
|
|
<filename>remote-fs.target</filename>,
|
|
<filename>remote-fs-pre.target</filename>,
|
|
<filename>rescue.target</filename>,
|
|
<filename>rpcbind.target</filename>,
|
|
<filename>runlevel2.target</filename>,
|
|
<filename>runlevel3.target</filename>,
|
|
<filename>runlevel4.target</filename>,
|
|
<filename>runlevel5.target</filename>,
|
|
<filename>shutdown.target</filename>,
|
|
<filename>sigpwr.target</filename>,
|
|
<filename>sleep.target</filename>,
|
|
<filename>smartcard.target</filename>,
|
|
<filename>sockets.target</filename>,
|
|
<filename>sound.target</filename>,
|
|
<filename>suspend.target</filename>,
|
|
<filename>swap.target</filename>,
|
|
<filename>sysinit.target</filename>,
|
|
<filename>syslog.socket</filename>,
|
|
<filename>system-update.target</filename>,
|
|
<filename>time-sync.target</filename>,
|
|
<filename>umount.target</filename></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>A few units are treated specially by
|
|
systemd. They have special internal semantics and
|
|
cannot be renamed.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Special System Units</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><filename>basic.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
covering early boot-up.</para>
|
|
<para>systemd automatically
|
|
adds dependencies of the types
|
|
Requires and After for this
|
|
target unit to all SysV
|
|
service units configured for
|
|
runlevel 1 to 5.</para>
|
|
<para>Usually this should pull-in
|
|
all sockets, mount points,
|
|
swap devices and other basic
|
|
initialization necessary for
|
|
the general purpose
|
|
daemons. Most normal daemons
|
|
should have dependencies of
|
|
type After and Requires on
|
|
this unit.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>bluetooth.target</filename></term>
|
|
<listitem>
|
|
<para>This target is started
|
|
automatically as soon as a
|
|
bluetooth controller is
|
|
plugged in or becomes
|
|
available at boot.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>ctrl-alt-del.target</filename></term>
|
|
<listitem>
|
|
<para>systemd starts this
|
|
target whenever
|
|
Control+Alt+Del is pressed on
|
|
the console. Usually this
|
|
should be aliased (symlinked)
|
|
to
|
|
<filename>reboot.target</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>cryptsetup.target</filename></term>
|
|
<listitem>
|
|
<para>A target that pulls in
|
|
setup services for all
|
|
encrypted block
|
|
devices.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>dbus.service</filename></term>
|
|
<listitem>
|
|
<para>A special unit for the
|
|
D-Bus system bus. As soon as
|
|
this service is fully started
|
|
up systemd will connect to it
|
|
and register its
|
|
service.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>dbus.socket</filename></term>
|
|
<listitem>
|
|
<para>A special unit for the
|
|
D-Bus system bus socket. All
|
|
units with
|
|
<literal>Type=dbus</literal>
|
|
automatically gain a
|
|
dependency on this
|
|
unit.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>default.target</filename></term>
|
|
<listitem>
|
|
<para>The default unit systemd
|
|
starts at bootup. Usually this
|
|
should be aliased (symlinked)
|
|
to
|
|
<filename>multi-user.target</filename>
|
|
or
|
|
<filename>graphical.target</filename>.</para>
|
|
<para>The default unit systemd
|
|
starts at bootup can be
|
|
overridden with the
|
|
<varname>systemd.unit=</varname>
|
|
kernel command line option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>display-manager.service</filename></term>
|
|
<listitem>
|
|
<para>The display manager
|
|
service. Usually this should
|
|
be aliased (symlinked) to
|
|
<filename>gdm.service</filename>
|
|
or a similar display manager
|
|
service.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>emergency.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that starts an emergency
|
|
shell on the main
|
|
console. This unit is supposed
|
|
to be used with the kernel
|
|
command line option
|
|
<varname>systemd.unit=</varname>
|
|
and has otherwise little use.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>final.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that is used during the
|
|
shutdown logic and may be used
|
|
to pull in late services after
|
|
all normal services are
|
|
already terminated and all
|
|
mounts unmounted.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>getty.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that pulls in all local TTY
|
|
<filename>getty</filename> instances.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>graphical.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for setting up a graphical
|
|
login screen. This pulls in
|
|
<filename>multi-user.target</filename>.</para>
|
|
|
|
<para>Units that are needed
|
|
for graphical login shall add
|
|
Wants dependencies for their
|
|
unit to this unit (or
|
|
<filename>multi-user.target</filename>)
|
|
during installation.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>hibernate.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for hibernating the
|
|
system. This pulls in
|
|
<filename>sleep.target</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>hybrid-sleep.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for hibernating and suspending the
|
|
system at the same time. This pulls in
|
|
<filename>sleep.target</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>halt.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for shutting down and halting the system.</para>
|
|
|
|
<para>Applications wanting to
|
|
halt the system should start
|
|
this unit.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>kbrequest.target</filename></term>
|
|
<listitem>
|
|
<para>systemd starts this
|
|
target whenever Alt+ArrowUp is
|
|
pressed on the console. This
|
|
is a good candidate to be
|
|
aliased (symlinked) to
|
|
<filename>rescue.target</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>kexec.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for shutting down and rebooting the system via kexec.</para>
|
|
|
|
<para>Applications wanting to
|
|
reboot the system with kexec should start
|
|
this unit.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>local-fs.target</filename></term>
|
|
<listitem>
|
|
<para>systemd automatically
|
|
adds dependencies of type
|
|
After to all mount units that
|
|
refer to local mount points
|
|
for this target unit. In
|
|
addition, systemd adds
|
|
dependencies of type Wants to
|
|
this target unit for those
|
|
mounts listed in
|
|
<filename>/etc/fstab</filename>
|
|
that have the
|
|
<option>auto</option> and
|
|
<option>comment=systemd.mount</option>
|
|
mount options set.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>local-fs-pre.target</filename></term>
|
|
<listitem>
|
|
<para>This target unit is
|
|
automatically ordered before
|
|
all local mount points marked
|
|
with <option>auto</option>
|
|
(see above). It can be used to
|
|
execute certain units before
|
|
all local mounts.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>multi-user.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for setting up a multi-user
|
|
system (non-graphical). This
|
|
is pulled in by
|
|
<filename>graphical.target</filename>.</para>
|
|
|
|
<para>Units that are needed
|
|
for a multi-user system shall
|
|
add Wants dependencies to
|
|
this unit for their unit during
|
|
installation.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>network.target</filename></term>
|
|
<listitem>
|
|
<para>systemd automatically
|
|
adds dependencies of type
|
|
After for this target unit to
|
|
all SysV init script service
|
|
units with an LSB header
|
|
referring to the
|
|
<literal>$network</literal>
|
|
facility.</para>
|
|
|
|
<para>This unit is supposed to
|
|
indicate when the network is
|
|
"up", but it is only very
|
|
loosely defined what that is
|
|
supposed to mean. Also see <ulink
|
|
url="http://www.freedesktop.org/wiki/Software/systemd/NetworkTarget">Running
|
|
Services After the Network is
|
|
up</ulink> for more
|
|
information.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>nss-lookup.target</filename></term>
|
|
<listitem>
|
|
<para>A target that should be
|
|
used as synchronization point
|
|
for all host/network name
|
|
service lookups. Note that
|
|
this is independent of
|
|
user/group name lookups for
|
|
which
|
|
<filename>nss-user-lookup.target</filename>
|
|
should be used. systemd
|
|
automatically adds
|
|
dependencies of type After for
|
|
this target unit to all SysV
|
|
init script service units with
|
|
an LSB header referring to the
|
|
<literal>$named</literal>
|
|
facility.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>nss-user-lookup.target</filename></term>
|
|
<listitem>
|
|
<para>A target that should be
|
|
used as synchronization point
|
|
for all user/group name
|
|
service lookups. Note that
|
|
this is independent of
|
|
host/network name lookups for
|
|
which
|
|
<filename>nss-lookup.target</filename>
|
|
should be used. </para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>poweroff.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for shutting down and powering off the system.</para>
|
|
|
|
<para>Applications wanting to
|
|
power off the system should start
|
|
this unit.</para>
|
|
|
|
<para><filename>runlevel0.target</filename>
|
|
is an alias for this target
|
|
unit, for compatibility with SysV.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>printer.target</filename></term>
|
|
<listitem>
|
|
<para>This target is started
|
|
automatically as soon as a
|
|
printer is plugged in or
|
|
becomes available at
|
|
boot.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>reboot.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for shutting down and rebooting the system.</para>
|
|
|
|
<para>Applications wanting to
|
|
reboot the system should start
|
|
this unit.</para>
|
|
|
|
<para><filename>runlevel6.target</filename>
|
|
is an alias for this target
|
|
unit, for compatibility with SysV.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>remote-fs.target</filename></term>
|
|
<listitem>
|
|
<para>Similar to
|
|
<filename>local-fs.target</filename>,
|
|
but for remote mount
|
|
points.</para>
|
|
|
|
<para>systemd automatically
|
|
adds dependencies of type
|
|
After for this target unit to
|
|
all SysV init script service
|
|
units with an LSB header
|
|
referring to the
|
|
<literal>$remote_fs</literal>
|
|
facility.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>remote-fs-pre.target</filename></term>
|
|
<listitem>
|
|
<para>This target unit is
|
|
automatically ordered before
|
|
all remote mount points marked
|
|
with <option>auto</option>
|
|
(see above). It can be used to
|
|
execute certain units before
|
|
all remote mounts.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>rescue.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for setting up the base system
|
|
and a rescue shell.</para>
|
|
|
|
<para><filename>runlevel1.target</filename>
|
|
is an alias for this target
|
|
unit, for compatibility with SysV.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>rpcbind.target</filename></term>
|
|
<listitem>
|
|
<para>systemd automatically
|
|
adds dependencies of type
|
|
After for this target unit to
|
|
all SysV init script service
|
|
units with an LSB header
|
|
referring to the
|
|
<literal>$portmap</literal>
|
|
facility.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>runlevel2.target</filename></term>
|
|
<term><filename>runlevel3.target</filename></term>
|
|
<term><filename>runlevel4.target</filename></term>
|
|
<term><filename>runlevel5.target</filename></term>
|
|
<listitem>
|
|
<para>These are targets that
|
|
are called whenever the SysV
|
|
compatibility code asks for
|
|
runlevel 2, 3, 4, 5,
|
|
respectively. It is a good
|
|
idea to make this an alias for
|
|
(i.e. symlink to)
|
|
<filename>multi-user.target</filename>
|
|
(for runlevel 2) or
|
|
<filename>graphical.target</filename>
|
|
(the others).</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>shutdown.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that terminates the services
|
|
on system shutdown.</para>
|
|
|
|
<para>Services that shall be
|
|
terminated on system shutdown
|
|
shall add Conflicts
|
|
dependencies to this unit for
|
|
their service unit, which is
|
|
implicitly done when
|
|
<varname>DefaultDependencies=yes</varname>
|
|
is set (the default).</para>
|
|
|
|
<para>systemd automatically
|
|
adds dependencies of type
|
|
Conflicts to this target unit
|
|
for all SysV init script
|
|
service units that shall be
|
|
terminated in SysV runlevels 0
|
|
or 6.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>sigpwr.target</filename></term>
|
|
<listitem>
|
|
<para>A special target that is
|
|
started when systemd receives
|
|
the SIGPWR process signal,
|
|
which is normally sent by the
|
|
kernel or UPS daemons when
|
|
power fails.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>sleep.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that is pulled in by
|
|
<filename>suspend.target</filename>,
|
|
<filename>hibernate.target</filename> and <filename>hybrid-sleep.target</filename>
|
|
and may be used to hook units
|
|
into the sleep state
|
|
logic.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>smartcard.target</filename></term>
|
|
<listitem>
|
|
<para>This target is started
|
|
automatically as soon as a
|
|
smartcard controller is
|
|
plugged in or becomes
|
|
available at boot.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>sockets.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that sets up all service
|
|
sockets.</para>
|
|
|
|
<para>Services that can be
|
|
socket-activated shall add
|
|
Wants dependencies to this
|
|
unit for their socket unit
|
|
during installation.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>sound.target</filename></term>
|
|
<listitem>
|
|
<para>This target is started
|
|
automatically as soon as a
|
|
sound card is plugged in or
|
|
becomes available at
|
|
boot.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>suspend.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
for suspending the
|
|
system. This pulls in
|
|
<filename>sleep.target</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>swap.target</filename></term>
|
|
<listitem>
|
|
<para>Similar to
|
|
<filename>local-fs.target</filename>, but for swap
|
|
partitions and swap
|
|
files.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>sysinit.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
covering early boot-up scripts.</para>
|
|
<para>systemd automatically
|
|
adds dependencies of the types
|
|
Wants and After for all
|
|
SysV service units configured
|
|
for runlevels that are not 0
|
|
to 6 to this target unit.
|
|
This covers the special
|
|
boot-up runlevels some
|
|
distributions have, such as S
|
|
or b.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>syslog.socket</filename></term>
|
|
<listitem>
|
|
<para>The socket unit
|
|
syslog implementations should
|
|
listen on. All userspace log
|
|
messages will be made
|
|
available on this socket. For
|
|
more information about syslog
|
|
integration, please consult
|
|
the <ulink
|
|
url="http://www.freedesktop.org/wiki/Software/systemd/syslog">Syslog
|
|
Interface</ulink>
|
|
document.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>system-update.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that is used for off-line
|
|
system updates.
|
|
<citerefentry><refentrytitle>systemd-system-update-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
|
|
will redirect the boot process
|
|
to this target if
|
|
<filename>/system-update</filename>
|
|
exists. For more information
|
|
see the <ulink
|
|
url="http://freedesktop.org/wiki/Software/systemd/SystemUpdates">System
|
|
Updates
|
|
Specification</ulink>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>time-sync.target</filename></term>
|
|
<listitem>
|
|
<para>systemd automatically
|
|
adds dependencies of type
|
|
After for this target unit to
|
|
all SysV init script service
|
|
units with an LSB header
|
|
referring to the
|
|
<literal>$time</literal>
|
|
facility.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><filename>umount.target</filename></term>
|
|
<listitem>
|
|
<para>A special target unit
|
|
that umounts all mount and
|
|
automount points on system
|
|
shutdown.</para>
|
|
|
|
<para>Mounts that shall be
|
|
unmounted on system shutdown
|
|
shall add Conflicts
|
|
dependencies to this unit for
|
|
their mount unit, which is
|
|
implicitly done when
|
|
<varname>DefaultDependencies=yes</varname>
|
|
is set (the default).</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Special User Units</title>
|
|
|
|
<para>When systemd runs as a user instance, the
|
|
following special units are available, which have
|
|
similar definitions as their system counterparts:
|
|
<filename>default.target</filename>,
|
|
<filename>shutdown.target</filename>,
|
|
<filename>sockets.target</filename></para>
|
|
|
|
<para>In addition the following special unit is
|
|
understood only when systemd runs as service instance:</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><filename>exit.target</filename></term>
|
|
<listitem>
|
|
<para>A special service unit
|
|
for shutting down the
|
|
user service manager.</para>
|
|
|
|
<para>Applications wanting to
|
|
terminate the user service
|
|
manager should start this
|
|
unit. If systemd receives
|
|
SIGTERM or SIGINT when running
|
|
as user service daemon it will
|
|
start this unit.</para>
|
|
|
|
<para>Normally, this pulls in
|
|
<filename>shutdown.target</filename>
|
|
which in turn should be
|
|
conflicted by all units that
|
|
want to be shut down on
|
|
user service manager exit.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>bootup</refentrytitle><manvolnum>7</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|