X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.unit.xml;h=39da614a821cae36c7440e3e52c5c88efb1cb37d;hp=14da607a95f1f3288bb93455812d779c4b7056a8;hb=9f7dad774ebfad23269800b7096eaad087481deb;hpb=f14e15f8affe906a45d8afc76c302a49cd1f70ee diff --git a/man/systemd.unit.xml b/man/systemd.unit.xml index 14da607a9..39da614a8 100644 --- a/man/systemd.unit.xml +++ b/man/systemd.unit.xml @@ -139,7 +139,10 @@ with the enable command of the systemctl1 tool which reads information from the [Install] - section of unit files. (See below.) + section of unit files. (See below.) A similar + functionality exists for Requires= + type dependencies as well, the directory suffix is + .requires/ in this case. Note that while systemd offers a flexible dependency system between units it is recommended to @@ -216,21 +219,6 @@ dependent on the type of unit: - - Names= - - Additional names for - this unit. The names listed here must - have the same suffix (i.e. type) as - the unit file name. This option may be - specified more than once, in which - case all listed names are used. Note - that this option is different from the - Alias= option from - the [Install] section mentioned - below. See below for details. - - Description= @@ -281,7 +269,6 @@ services. - RequiresOverridable= @@ -340,6 +327,23 @@ details see above. + + BindTo= + + Configures requirement + dependencies, very similar in style to + Requires=, however + in addition to this behaviour it also + declares that this unit is stopped + when any of the units listed suddenly + disappears. Units can suddenly, + unexpectedly disappear if a service + terminates on its own choice, a device + is unplugged or a mount point + unmounted without involvement of + systemd. + + Conflicts= @@ -441,27 +445,43 @@ - StopRetroactively= + OnFailureIsolate= + + Takes a boolean + argument. If the + unit listed in + OnFailure= will be + enqueued in isolation mode, i.e. all + units that are not its dependency will + be stopped. If this is set only a + single unit may be listed in + OnFailure=. Defaults + to + . + + + + IgnoreOnIsolate= Takes a boolean - argument. If and - a unit this unit requires stops - without this being requested by the - user, this unit will be stopped as - well. (e.g. if a service exits or - crashes on its own behalf, units this - flag is set for that require it will - be stopped.) Note that normally if a - unit stops without a user request, - units depending on it will not be - terminated. Only if the user requested - shutdown of a unit, all units - depending on that unit will be shut - down as well and at the same - time. Defaults to + argument. If + this unit will not be stopped when + isolating another unit. Defaults to . + + IgnoreOnSnapshot= + + Takes a boolean + argument. If + this unit will not be included in + snapshots. Defaults to + for device and + snapshot units, + for the others. + + StopWhenUnneeded= @@ -549,20 +569,6 @@ ones. - - IgnoreDependencyFailure= - - Takes a boolean - argument. If and - a requirement dependency of this unit - fails to start up this unit will be - started nonetheless, ignoring that - failure. If - (the default) and a dependency unit - fails the unit will immediately fail - too and the job is removed. - - JobTimeoutSec= @@ -593,13 +599,18 @@ ConditionPathExists= + ConditionPathIsDirectory= + ConditionDirectoryNotEmpty= ConditionKernelCommandLine= + ConditionVirtualization= + ConditionSecurity= + ConditionNull= Before starting a unit verify that the specified condition is true. With ConditionPathExists= - a file existance condition can be + a file existence condition can be checked before a unit is started. If the specified absolute path name does not exist startup of a unit will not @@ -613,25 +624,108 @@ is prefixed with an exclamation mark (!), the test is negated, and the unit only started if the path does not - exist. Similarly + exist. ConditionPathIsDirectory= + is similar to + ConditionPathExists= + but verifies whether a certain path + exists and is a directory. + ConditionDirectoryNotEmpty= + is similar to + ConditionPathExists= + but verifies whether a certain path + exists and is a non-empty + directory. Similarly ConditionKernelCommandLine= may be used to check whether a specific kernel command line option is set (or if prefixed with the exclamation mark unset). The argument must either be a single word, or an - assignment (i.e. two words, seperated + assignment (i.e. two words, separated by the equality sign). In the former - case the kernel command line is search - for the word appearing as is, or as - left hand side of an assignment. In - the latter case the exact assignment - is looked for with right and left hand - side matching. If multiple conditions - are specified the unit will be - executed iff at least one of them - apply (i.e. a logical OR is - applied). + case the kernel command line is + searched for the word appearing as is, + or as left hand side of an + assignment. In the latter case the + exact assignment is looked for with + right and left hand side + matching. ConditionVirtualization= + may be used to check whether the + system is executed in a virtualized + environment and optionally test + whether it is a specific + implementation. Takes either boolean + value to check if being executed in + any virtual environment or one of the + qemu, + kvm, + vmware, + microsoft, + oracle, + xen, + pidns, + openvz to test + against a specific implementation. The + test may be negated by prepending an + exclamation mark. + ConditionSecurity= + may be used to check whether the given security + module is enabled on the system. + Currently the only recognized value is + selinux. + The test may be negated by prepending an + exclamation mark. Finally, + ConditionNull= may + be used to add a constant condition + check value to the unit. It takes a + boolean argument. If set to + false the condition + will always fail, otherwise + succeed. If multiple conditions are + specified the unit will be executed if + all of them apply (i.e. a logical AND + is applied). Condition checks can be + prefixed with a pipe symbol (|) in + which case a condition becomes a + triggering condition. If at least one + triggering condition is defined for a + unit then the unit will be executed if + at least one of the triggering + conditions apply and all of the + non-triggering conditions. If you + prefix an argument with the pipe + symbol and an exclamation mark the + pipe symbol must be passed first, the + exclamation second. + + + + Names= + + Additional names for + this unit. The names listed here must + have the same suffix (i.e. type) as + the unit file name. This option may be + specified more than once, in which + case all listed names are used. Note + that this option is different from the + Alias= option from + the [Install] section mentioned + below. See below for details. Note + that in almost all cases this option + is not what you want. A symlink alias + in the file system is generally + preferable since it can be used as + lookup key. If a unit with a symlinked + alias name is not loaded and needs to + be it is easily found via the + symlink. However, if a unit with an + alias name configured with this + setting is not loaded it will not be + discovered. This settings' only use is + in conjunction with service + instances. +