X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.unit.xml;h=d447c3a0a52dd471c8637a4aef5e3f95aefe1dac;hp=968ee58be3550d76712893126dc502b5363967f7;hb=28cf382a0afd10d0e2a71d152f0df4909e90d159;hpb=21931dbe6561047a6fe728dc38cd2d6468066e5a diff --git a/man/systemd.unit.xml b/man/systemd.unit.xml index 968ee58be..d447c3a0a 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= @@ -575,6 +563,7 @@ ConditionPathExists= ConditionDirectoryNotEmpty= ConditionKernelCommandLine= + ConditionVirtualization= ConditionNull= Before starting a unit @@ -598,7 +587,7 @@ exist. ConditionDirectoryNotEmpty= is similar to ConditionPathExists= - but verifies whether a cetrain path is + but verifies whether a certain path is exists and is a non-empty directory. Similarly ConditionKernelCommandLine= @@ -607,7 +596,7 @@ 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 searched for the word appearing as is, @@ -615,7 +604,25 @@ assignment. In the latter case the exact assignment is looked for with right and left hand side - matching. Finally, + 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. Finally, ConditionNull= may be used to add a constant condition check value to the unit. It takes a @@ -623,10 +630,50 @@ false the condition will always fail, otherwise succeed. If multiple conditions are - specified the unit will be executed - iff at least one of them applies - (i.e. a logical OR is - applied). + 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. +