X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.special.xml;h=116a43ccfb30798e6570fdeb43df6ac2963c962c;hp=e81e99e44efe07ce4572ae6c9c8d1abec34d3e37;hb=3e2147858f21943d5f4a781c60f33ac22c6096ed;hpb=bd3d19a4ea3b007bea4c94213cafd5dc37ce7a3d diff --git a/man/systemd.special.xml b/man/systemd.special.xml index e81e99e44..116a43ccf 100644 --- a/man/systemd.special.xml +++ b/man/systemd.special.xml @@ -48,38 +48,44 @@ - basic.target - ctrl-alt-del.target - default.target - emergency.service - graphical.target - halt.target - kbrequest.target - local-fs.target - multi-user.target - network.target - nss-lookup.target - poweroff.target - reboot.target - remote-fs.target - rescue.target - rpcbind.target - rtc-set.target - runlevel0.target, - runlevel0.target, - runlevel1.target, - runlevel2.target, - runlevel3.target, - runlevel4.target, - runlevel5.target, - runlevel6.target - shutdown.target - sigpwr.target - sockets.target - swap.target - syslog.target - systemd-initctl.service, systemd-initctl.socket - systemd-logger.service, systemd-logger.socket + basic.target, + ctrl-alt-del.target, + dbus.service, + default.target, + display-manager.service, + emergency.target, + exit.service, + graphical.target, + halt.target, + kbrequest.target, + local-fs.target, + local-fs-pre.target, + mail-transfer-agent.target, + multi-user.target, + network.target, + nss-lookup.target, + poweroff.target, + reboot.target, + remote-fs.target, + remote-fs-pre.target, + rescue.target, + rpcbind.target, + runlevel2.target, + runlevel3.target, + runlevel4.target, + runlevel5.target, + shutdown.target, + sigpwr.target, + sockets.target, + swap.target, + sysinit.target, + syslog.target, + systemd-initctl.service, + systemd-initctl.socket, + systemd-stdout-syslog-bridge.service, + systemd-stdout-syslog-bridge.socket, + time-sync.target, + umount.target @@ -105,16 +111,15 @@ target unit to all SysV service units configured for runlevel 1 to 5. - 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. + 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. @@ -129,6 +134,17 @@ reboot.target. + + dbus.service + + 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. + + default.target @@ -141,21 +157,41 @@ graphical.target. The default unit systemd starts at bootup can be - overriden with the - systemd.default= + overridden with the + systemd.unit= kernel command line option. - emergency.service + display-manager.service - A special service unit + The display manager + service. Usually this should + be aliased (symlinked) to + xdm.service + or a similar display manager + service. + 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 + $x-display-manager + facility, for compatibility + with Debian. + + + + emergency.target + + 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 - systemd.default= + systemd.unit= and has otherwise little use. @@ -212,8 +248,8 @@ mounts listed in /etc/fstab that have the - auto and - comment=systemd.mount + and + mount options set. systemd automatically @@ -226,6 +262,41 @@ facility. + + local-fs-pre.target + + This target unit is + automatically ordered before + all local mount points marked + with + (see above). It can be used to + execute certain units before + all local mounts. + + + + mail-transfer-agent.target + + The mail transfer agent + (MTA) service. Usually this + should pull-in all units + necessary for + sending/receiving mails on the + local host. + + 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 + $mail-transfer-agent + or + $mail-transport-agent + facilities, for compatibility + with Debian. + + multi-user.target @@ -312,10 +383,22 @@ all SysV init script service units with an LSB header referring to the - $remote-fs + $remote_fs facility. + + remote-fs-pre.target + + This target unit is + automatically ordered before + all remote mount points marked + with + (see above). It can be used to + execute certain units before + all remote mounts. + + rescue.target @@ -341,50 +424,11 @@ facility. - - rtc-set.target - - 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 - $time - facility. - - - - runlevel0.target - - This is a target that is - called whever the SysV - compatibility code asks for - runlevel 0. This is an alias - for - poweroff.target, - for compatibility with - SysV. - - - - runlevel1.target - - This is a target that is - called whever the SysV - compatibility code asks for - runlevel 1. This is an alias - for - rescue.target, - for compatibility with - SysV. - - runlevel2.target 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 @@ -396,7 +440,7 @@ runlevel3.target 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 @@ -410,7 +454,7 @@ runlevel4.target 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 @@ -424,7 +468,7 @@ runlevel5.target 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 @@ -434,19 +478,6 @@ graphical.target. - - runlevel6.target - - This is a target that is - called whever the SysV - compatibility code asks for - runlevel 6. This is an alias - for - reboot.target, - for compatibility with - SysV. - - shutdown.target @@ -458,8 +489,10 @@ terminated on system shutdown shall add Conflicts dependencies to this unit for - their service unit during - installation. + their service unit, which is + implicitly done when + DefaultDependencies=yes + is set (the default). systemd automatically adds dependencies of type @@ -504,6 +537,23 @@ files. + + sysinit.target + + A special target unit + covering early boot-up scripts. + 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. + + syslog.target @@ -515,15 +565,6 @@ referring to the $syslog facility. - - Administrators should - ensure that this target pulls - in a service unit with the - name or alias of - @SPECIAL_SYSLOG_SERVICE@ - (or a socket unit that - activates this - service). @@ -548,7 +589,7 @@ - systemd-logger.service + systemd-stdout-syslog-bridge.service This is internally used by systemd to provide syslog @@ -556,15 +597,15 @@ maintains. This is a socket-activated service, see - system-logger.socket. + system-stdout-syslog-bridge.socket. - systemd-logger.socket + systemd-stdout-syslog-bridge.socket Socket activation unit for - system-logger.service. systemd + system-stdout-syslog-bridge.service. systemd will automatically add dependencies of types Requires and After to all units that @@ -574,13 +615,64 @@ kernel log buffer. + + systemd-shutdownd.service + + This is internally used + by + shutdown8 + to implement delayed shutdowns. + This is a + socket-activated service, see + system-shutdownd.socket. + + + + systemd-shutdownd.socket + + Socket activation unit + for + system-shutdownd.service. + + + + time-sync.target + + 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 + $time + facility. + + + + umount.target + + A special target unit + that umounts all mount and + automount points on system + shutdown. + + Mounts that shall be + unmounted on system shutdown + shall add Conflicts + dependencies to this unit for + their mount unit, which is + implicitly done when + DefaultDependencies=yes + is set (the default). + + - Special Session Units + Special User Units - When systemd runs as a service instance, the + When systemd runs as a user instance, the following special units are available, which have similar definitions as their system counterparts: default.target, @@ -589,14 +681,43 @@ shutdown.target, sockets.target, swap.target. + + In addition the following special unit is + understood only when systemd runs as service instance: + + + + exit.service + + A special service unit + for shutting down the + user service manager. + + 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. + + Normally, this pulls in + shutdown.target + which in turn should be + conflicted by all units that + want to be shut down on + user service manager exit. + + + See Also - systemd.unit5 - systemd.service5 - systemd.socket5 + systemd.unit5, + systemd.service5, + systemd.socket5, systemd.target5