chiark / gitweb /
logind: support for hybrid sleep (i.e. suspend+hibernate at the same time)
[elogind.git] / man / systemd.special.xml
index e81e99e..6b8e0ec 100644 (file)
@@ -8,16 +8,16 @@
   Copyright 2010 Lennart Poettering
 
   systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
+  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
-  General Public License for more details.
+  Lesser General Public License for more details.
 
-  You should have received a copy of the GNU General Public License
+  You should have received a copy of the GNU Lesser General Public License
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 -->
 
 
         <refnamediv>
                 <refname>systemd.special</refname>
-                <refpurpose>special systemd units</refpurpose>
+                <refpurpose>Special systemd units</refpurpose>
         </refnamediv>
 
         <refsynopsisdiv>
-                <para><filename>basic.target</filename></para>
-                <para><filename>ctrl-alt-del.target</filename></para>
-                <para><filename>default.target</filename></para>
-                <para><filename>emergency.service</filename></para>
-                <para><filename>graphical.target</filename></para>
-                <para><filename>halt.target</filename></para>
-                <para><filename>kbrequest.target</filename></para>
-                <para><filename>local-fs.target</filename></para>
-                <para><filename>multi-user.target</filename></para>
-                <para><filename>network.target</filename></para>
-                <para><filename>nss-lookup.target</filename></para>
-                <para><filename>poweroff.target</filename></para>
-                <para><filename>reboot.target</filename></para>
-                <para><filename>remote-fs.target</filename></para>
-                <para><filename>rescue.target</filename></para>
-                <para><filename>rpcbind.target</filename></para>
-                <para><filename>rtc-set.target</filename></para>
-                <para><filename>runlevel0.target</filename>,
-                        <filename>runlevel0.target</filename>,
-                        <filename>runlevel1.target</filename>,
-                        <filename>runlevel2.target</filename>,
-                        <filename>runlevel3.target</filename>,
-                        <filename>runlevel4.target</filename>,
-                        <filename>runlevel5.target</filename>,
-                        <filename>runlevel6.target</filename></para>
-                <para><filename>shutdown.target</filename></para>
-                <para><filename>sigpwr.target</filename></para>
-                <para><filename>sockets.target</filename></para>
-                <para><filename>swap.target</filename></para>
-                <para><filename>syslog.target</filename></para>
-                <para><filename>systemd-initctl.service</filename>, <filename>systemd-initctl.socket</filename></para>
-                <para><filename>systemd-logger.service</filename>, <filename>systemd-logger.socket</filename></para>
+                <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>hibernate.target</filename>,
+                <filename>http-daemon.target</filename>,
+                <filename>hybrid-sleep.target</filename>,
+                <filename>halt.target</filename>,
+                <filename>kbrequest.target</filename>,
+                <filename>kexec.target</filename>,
+                <filename>local-fs.target</filename>,
+                <filename>local-fs-pre.target</filename>,
+                <filename>mail-transfer-agent.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>syslog.target</filename>,
+                <filename>system-update.target</filename>,
+                <filename>time-sync.target</filename>,
+                <filename>umount.target</filename></para>
         </refsynopsisdiv>
 
         <refsect1>
                                         target unit to all SysV
                                         service units configured for
                                         runlevel 1 to 5.</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>
+                                        <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>
                                 </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
                                         <filename>graphical.target</filename>.</para>
                                         <para>The default unit systemd
                                         starts at bootup can be
-                                        overriden with the
-                                        <varname>systemd.default=</varname>
+                                        overridden with the
+                                        <varname>systemd.unit=</varname>
                                         kernel command line option.</para>
                                 </listitem>
                         </varlistentry>
                         <varlistentry>
-                                <term><filename>emergency.service</filename></term>
+                                <term><filename>display-manager.service</filename></term>
                                 <listitem>
-                                        <para>A special service unit
+                                        <para>The display manager
+                                        service. Usually this should
+                                        be aliased (symlinked) to
+                                        <filename>gdm.service</filename>
+                                        or a similar display manager
+                                        service.</para>
+                                        <para>systemd automatically
+                                        adds dependencies of type
+                                        After for this target unit to
+                                        all SysV init script service
+                                        units with a LSB header
+                                        referring to the
+                                        <literal>$x-display-manager</literal>
+                                        facility, for compatibility
+                                        with Debian.</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.default=</varname>
+                                        <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
                                 </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>http-daemon.target</filename></term>
+                                <listitem>
+                                        <para>A target for pulling in
+                                        an HTTP server if there is
+                                        any.</para>
+                                        <para>systemd automatically
+                                        adds dependencies of type
+                                        After for this target unit to
+                                        all SysV init script service
+                                        units with a LSB header
+                                        referring to the
+                                        <literal>$httpd</literal>
+                                        facility.</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
                                 </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
                                         mounts listed in
                                         <filename>/etc/fstab</filename>
                                         that have the
-                                        <literal>auto</literal> and
-                                        <literal>comment=systemd.mount</literal>
+                                        <option>auto</option> and
+                                        <option>comment=systemd.mount</option>
                                         mount options set.</para>
 
                                         <para>systemd automatically
                                 </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>mail-transfer-agent.target</filename></term>
+                                <listitem>
+                                        <para>The mail transfer agent
+                                        (MTA) service. Usually this
+                                        should pull-in all units
+                                        necessary for
+                                        sending/receiving mails on the
+                                        local host.</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>$mail-transfer-agent</literal>
+                                        or
+                                        <literal>$mail-transport-agent</literal>
+                                        facilities, for compatibility
+                                        with Debian.</para>
+                                </listitem>
+                        </varlistentry>
+                        <varlistentry>
                                 <term><filename>multi-user.target</filename></term>
                                 <listitem>
                                         <para>A special target unit
                         <varlistentry>
                                 <term><filename>nss-lookup.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
+                                        <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
                                 </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
                                         all SysV init script service
                                         units with an LSB header
                                         referring to the
-                                        <literal>$remote-fs</literal>
+                                        <literal>$remote_fs</literal>
                                         facility.</para>
                                 </listitem>
                         </varlistentry>
                         <varlistentry>
+                                <term><filename>remote-fs-pre.target</filename></term>
+                                <listitem>
+                                        <para>This target unit is
+                                        automatically ordered before
+                                        all remote mount points marked
+                                        with <option>auto</option>
+                                        (see above). It can be used to
+                                        execute certain units before
+                                        all remote mounts.</para>
+                                </listitem>
+                        </varlistentry>
+                        <varlistentry>
                                 <term><filename>rescue.target</filename></term>
                                 <listitem>
                                         <para>A special target unit
                                         all SysV init script service
                                         units with an LSB header
                                         referring to the
-                                        <literal>$rpcbind</literal>
-                                        facility.</para>
-                                </listitem>
-                        </varlistentry>
-                        <varlistentry>
-                                <term><filename>rtc-set.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>$time</literal>
+                                        <literal>$portmap</literal>
                                         facility.</para>
                                 </listitem>
                         </varlistentry>
                         <varlistentry>
-                                <term><filename>runlevel0.target</filename></term>
-                                <listitem>
-                                        <para>This is a target that is
-                                        called whever the SysV
-                                        compatibility code asks for
-                                        runlevel 0. This is an alias
-                                        for
-                                        <filename>poweroff.target</filename>,
-                                        for compatibility with
-                                        SysV.</para>
-                                </listitem>
-                        </varlistentry>
-                        <varlistentry>
-                                <term><filename>runlevel1.target</filename></term>
-                                <listitem>
-                                        <para>This is a target that is
-                                        called whever the SysV
-                                        compatibility code asks for
-                                        runlevel 1. This is an alias
-                                        for
-                                        <filename>rescue.target</filename>,
-                                        for compatibility with
-                                        SysV.</para>
-                                </listitem>
-                        </varlistentry>
-                        <varlistentry>
                                 <term><filename>runlevel2.target</filename></term>
                                 <listitem>
                                         <para>This is a target that is
-                                        called whever the SysV
+                                        called whenever the SysV
                                         compatibility code asks for
                                         runlevel 2. It is a good idea
                                         to make this an alias for
                                 <term><filename>runlevel3.target</filename></term>
                                 <listitem>
                                         <para>This is a target that is
-                                        called whever the SysV
+                                        called whenever the SysV
                                         compatibility code asks for
                                         runlevel 3. It is a good idea
                                         to make this an alias for
                                 <term><filename>runlevel4.target</filename></term>
                                 <listitem>
                                         <para>This is a target that is
-                                        called whever the SysV
+                                        called whenever the SysV
                                         compatibility code asks for
                                         runlevel 4. It is a good idea
                                         to make this an alias for
                                 <term><filename>runlevel5.target</filename></term>
                                 <listitem>
                                         <para>This is a target that is
-                                        called whever the SysV
+                                        called whenever the SysV
                                         compatibility code asks for
                                         runlevel 5. It is a good idea
                                         to make this an alias for
                                 </listitem>
                         </varlistentry>
                         <varlistentry>
-                                <term><filename>runlevel6.target</filename></term>
-                                <listitem>
-                                        <para>This is a target that is
-                                        called whever the SysV
-                                        compatibility code asks for
-                                        runlevel 6. This is an alias
-                                        for
-                                        <filename>reboot.target</filename>,
-                                        for compatibility with
-                                        SysV.</para>
-                                </listitem>
-                        </varlistentry>
-                        <varlistentry>
                                 <term><filename>shutdown.target</filename></term>
                                 <listitem>
                                         <para>A special target unit
                                         terminated on system shutdown
                                         shall add Conflicts
                                         dependencies to this unit for
-                                        their service unit during
-                                        installation.</para>
+                                        their service unit, which is
+                                        implicitly done when
+                                        <varname>DefaultDependencies=yes</varname>
+                                        is set (the default).</para>
 
                                         <para>systemd automatically
                                         adds dependencies of type
                                 </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
                                 </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
                                 </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 where
+                                        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>syslog.target</filename></term>
                                 <listitem>
                                         <para>systemd automatically
                                         referring to the
                                         <literal>$syslog</literal>
                                         facility.</para>
-
-                                        <para>Administrators should
-                                        ensure that this target pulls
-                                        in a service unit with the
-                                        name or alias of
-                                        <filename>@SPECIAL_SYSLOG_SERVICE@</filename>
-                                        (or a socket unit that
-                                        activates this
-                                        service).</para>
                                 </listitem>
                         </varlistentry>
                         <varlistentry>
-                                <term><filename>systemd-initctl.service</filename></term>
+                                <term><filename>system-update.target</filename></term>
                                 <listitem>
-                                        <para>This provides
-                                        compatibility with the SysV
-                                        /dev/initctl file system FIFO
-                                        for communication with the
-                                        init system.</para>
-                                        <para>This is a
-                                        socket-activated service, see
-                                        <filename>system-initctl.socket</filename>.</para>
-                                </listitem>
-                        </varlistentry>
-                        <varlistentry>
-                                <term><filename>systemd-initctl.socket</filename></term>
-                                <listitem>
-                                        <para>Socket activation unit
-                                        for
-                                        <filename>system-initctl.service</filename>.</para>
+                                        <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>systemd-logger.service</filename></term>
+                                <term><filename>time-sync.target</filename></term>
                                 <listitem>
-                                        <para>This is internally used
-                                        by systemd to provide syslog
-                                        logging to the processes it
-                                        maintains.</para>
-                                        <para>This is a
-                                        socket-activated service, see
-                                        <filename>system-logger.socket</filename>.</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>$time</literal>
+                                        facility.</para>
                                 </listitem>
                         </varlistentry>
                         <varlistentry>
-                                <term><filename>systemd-logger.socket</filename></term>
+                                <term><filename>umount.target</filename></term>
                                 <listitem>
-                                        <para>Socket activation unit
-                                        for
-                                        <filename>system-logger.service</filename>. systemd
-                                        will automatically add
-                                        dependencies of types Requires
-                                        and After to all units that
-                                        have been configured for
-                                        stdout or stderr to be
-                                        connected to syslog or the
-                                        kernel log buffer.</para>
+                                        <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 Session Units</title>
+                <title>Special User Units</title>
 
-                <para>When systemd runs as a service instance, the
+                <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>local-fs.target</filename>,
-                <filename>remote-fs.target</filename>,
                 <filename>shutdown.target</filename>,
-                <filename>sockets.target</filename>,
-                <filename>swap.target</filename>.</para>
+                <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.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>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>