X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsystemd.special.xml;h=8a7242662d7ac6c94958e2266803f05464849b18;hb=e3d84721dc9bcf9008f72dae03ff0f7842d0bb4b;hp=4c64a0fef220cfba917da5bf8da9ca7fc865362d;hpb=082694b75f0217f1c5b8b89590e5018f6d8b0949;p=elogind.git diff --git a/man/systemd.special.xml b/man/systemd.special.xml index 4c64a0fef..8a7242662 100644 --- a/man/systemd.special.xml +++ b/man/systemd.special.xml @@ -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 . --> @@ -49,30 +49,38 @@ basic.target, + bluetooth.target, ctrl-alt-del.target, + cryptsetup.target, dbus.service, dbus.socket, default.target, display-manager.service, emergency.target, - exit.service, - final.service, + exit.target, + final.target, + getty.target, graphical.target, - http-daemon.target, halt.target, + hibernate.target, + hybrid-sleep.target, + initrd-fs.target, kbrequest.target, kexec.target, local-fs.target, local-fs-pre.target, - mail-transfer-agent.target, multi-user.target, network.target, nss-lookup.target, + nss-user-lookup.target, + paths.target, poweroff.target, + printer.target, reboot.target, remote-fs.target, remote-fs-pre.target, rescue.target, + initrd-root-fs.target, rpcbind.target, runlevel2.target, runlevel3.target, @@ -80,13 +88,17 @@ runlevel5.target, shutdown.target, sigpwr.target, + sleep.target, + smartcard.target, sockets.target, + sound.target, + suspend.target, swap.target, sysinit.target, - syslog.service, syslog.socket, - syslog.target, + system-update.target, time-sync.target, + timers.target, umount.target @@ -106,22 +118,39 @@ basic.target A special target unit - covering early boot-up. + covering basic boot-up. 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. - Usually this should pull-in - all sockets, mount points, - swap devices and other basic + Requires= + and After= + for this target unit to all + services (except for those + with + DefaultDependencies=no). + + Usually this should + pull-in all mount points, swap + devices, sockets, timers, and + path units and other basic initialization necessary for - the general purpose - daemons. Most normal daemons - should have dependencies of - type After and Requires on - this unit. + general purpose + daemons. + + + + bluetooth.target + + This target is started + automatically as soon as a + Bluetooth controller is + plugged in or becomes + available at boot. + + This may be used to pull + in Bluetooth management + daemons dynamically when + Bluetooth hardware is + found. @@ -136,11 +165,20 @@ reboot.target. + + cryptsetup.target + + A target that pulls in + setup services for all + encrypted block + devices. + + dbus.service A special unit for the - D-Bus system bus. As soon as + D-Bus bus daemon. As soon as this service is fully started up systemd will connect to it and register its @@ -153,7 +191,7 @@ A special unit for the D-Bus system bus socket. All units with - Type=dbus + Type=dbus automatically gain a dependency on this unit. @@ -169,6 +207,7 @@ multi-user.target or graphical.target. + The default unit systemd starts at bootup can be overridden with the @@ -185,15 +224,6 @@ gdm.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. @@ -223,6 +253,17 @@ + + getty.target + + A special target unit + that pulls in statically + configured local TTY + getty + instances. + + + graphical.target @@ -232,40 +273,71 @@ multi-user.target. Units that are needed - for graphical login shall add - Wants dependencies for their - unit to this unit (or + for graphical logins shall add + Wants= + dependencies for their unit to + this unit (or multi-user.target) - during installation. + during installation. This is + best configured via + WantedBy=graphical.target + in the unit's + [Install] + section. - http-daemon.target + hibernate.target - A target for pulling in - an HTTP server if there is - any. - 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 - $httpd - facility. + A special target unit + for hibernating the + system. This pulls in + sleep.target. + + + + hybrid-sleep.target + + A special target unit + for hibernating and suspending the + system at the same time. This pulls in + sleep.target. halt.target A special target unit - for shutting down and halting the system. + for shutting down and halting + the system. Note that this + target is distinct from + poweroff.target + in that it generally really + just halts the system rather + than powering it down. Applications wanting to halt the system should start this unit. + + initrd-fs.target + + systemd-fstab-generator3 + automatically adds + dependencies of type + Before= to + sysroot-usr.mount + and all mount points fround in + /etc/fstab + that have the + and + + mount options set. + + + kbrequest.target @@ -291,29 +363,21 @@ local-fs.target - systemd automatically + systemd-fstab-generator3 + automatically adds + dependencies of type + Before= to + all mount units that refer to + local mount points for this + target unit. In addition, it 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 + Wants= to this target unit for those mounts listed in /etc/fstab that have the - and - - mount options set. - - 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 - $local_fs - facility. + mount + option set. @@ -328,29 +392,6 @@ 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 @@ -362,9 +403,15 @@ Units that are needed for a multi-user system shall - add Wants dependencies to - this unit for their unit during - installation. + add Wants= + dependencies for their unit to + this unit during + installation. This is best + configured via + WantedBy=multi-uer.target + in the unit's + [Install] + section. @@ -372,12 +419,22 @@ 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 + After= for + this target unit to all SysV + init script service units with + an LSB header referring to the $network facility. + + 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 Running + Services After the Network is + up for more + information. @@ -393,7 +450,8 @@ nss-user-lookup.target should be used. systemd automatically adds - dependencies of type After for + dependencies of type + After= for this target unit to all SysV init script service units with an LSB header referring to the @@ -415,6 +473,29 @@ should be used. + + paths.target + + A special target unit + that sets up all path units + (see + systemd.path5 + for details) that shall be + active after boot. + + It is recommended that + path units installed by + applications get pulled in via + Wants= + dependencies from this + unit. This is best configured + via a + WantedBy=paths.target + in the path unit's + [Install] + section. + + poweroff.target @@ -430,6 +511,22 @@ unit, for compatibility with SysV. + + printer.target + + This target is started + automatically as soon as a + printer is plugged in or + becomes available at + boot. + + This may be used to pull + in printer management + daemons dynamically when + printer hardware is + found. + + reboot.target @@ -455,10 +552,10 @@ 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 + After= for + this target unit to all SysV + init script service units with + an LSB header referring to the $remote_fs facility. @@ -487,71 +584,50 @@ unit, for compatibility with SysV. + + initrd-root-fs.target + + systemd-fstab-generator3 + automatically adds + dependencies of type + Before= to + the + sysroot.mount + unit, which is generated from + the kernel command line. + + + rpcbind.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 - $rpcbind + After= for + this target unit to all SysV + init script service units with + an LSB header referring to the + $portmap facility. runlevel2.target - - This is a target that is - called whenever the SysV - compatibility code asks for - runlevel 2. It is a good idea - to make this an alias for - (i.e. symlink to) - multi-user.target. - - - runlevel3.target - - This is a target that is - called whenever the SysV - compatibility code asks for - runlevel 3. It is a good idea - to make this an alias for - (i.e. symlink to) - multi-user.target - or - graphical.target. - - - runlevel4.target - - This is a target that is - called whenever the SysV - compatibility code asks for - runlevel 4. It is a good idea - to make this an alias for - (i.e. symlink to) - multi-user.target - or - graphical.target. - - - runlevel5.target - This is a target that is - called whenever the SysV + These are targets that + are called whenever the SysV compatibility code asks for - runlevel 5. It is a good idea - to make this an alias for + runlevel 2, 3, 4, 5, + respectively. It is a good + idea to make this an alias for (i.e. symlink to) multi-user.target - or - graphical.target. + (for runlevel 2) or + graphical.target + (the others). @@ -563,20 +639,12 @@ Services that shall be terminated on system shutdown - shall add Conflicts + shall add Conflicts= dependencies to this unit for their service unit, which is implicitly done when DefaultDependencies=yes is set (the default). - - 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. @@ -590,18 +658,81 @@ power fails. + + sleep.target + + A special target unit + that is pulled in by + suspend.target, + hibernate.target + and + hybrid-sleep.target + and may be used to hook units + into the sleep state + logic. + + + + smartcard.target + + This target is started + automatically as soon as a + smartcard controller is + plugged in or becomes + available at boot. + + This may be used to pull + in printer management + daemons dynamically when + smartcard hardware is + found. + + sockets.target A special target unit - that sets up all service - sockets. + that sets up all socket + units.(see + systemd.socket5 + for details) that shall be + active after boot. Services that can be socket-activated shall add - Wants dependencies to this - unit for their socket unit - during installation. + Wants= + dependencies to this unit for + their socket unit during + installation. This is best + configured via a + WantedBy=sockets.target + in the socket unit's + [Install] + section. + + + + sound.target + + This target is started + automatically as soon as a + sound card is plugged in or + becomes available at + boot. + + This may be used to pull + in audio management daemons + dynamically when printer + hardware is found. + + + + suspend.target + + A special target unit + for suspending the + system. This pulls in + sleep.target. @@ -618,51 +749,39 @@ 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.service - - The syslog service if - any. Implementations should - create a symlink from the - actual syslog implementation - to this generic name for - activating it. syslog.socket - The socket unit where + The socket unit syslog implementations should listen on. All userspace log messages will be made - available on this - socket. + available on this socket. For + more information about syslog + integration, please consult + the Syslog + Interface + document. - syslog.target + system-update.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 - $syslog - facility. + A special target unit + that is used for off-line + system updates. + systemd-system-update-generator8 + will redirect the boot process + to this target if + /system-update + exists. For more information + see the System + Updates + Specification. @@ -670,14 +789,37 @@ 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 + After= for + this target unit to all SysV + init script service units with + an LSB header referring to the $time facility. + + timers.target + + A special target unit + that sets up all timer + units (see + systemd.timer5 + for details) that shall be + active after boot. + + It is recommended that + timer units installed by + applications get pulled in via + Wants= + dependencies from this + unit. This is best configured + via + WantedBy=timers.target + in the timer unit's + [Install] + section. + + umount.target @@ -696,6 +838,7 @@ is set (the default). + @@ -714,7 +857,7 @@ - exit.service + exit.target A special service unit for shutting down the @@ -746,7 +889,9 @@ systemd.unit5, systemd.service5, systemd.socket5, - systemd.target5 + systemd.target5, + bootup7, + systemd-fstab-generator8