X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.exec.xml;h=99a91b3dfacc4a01253e6b763071baafd7f8f357;hp=d6ac5aed89d6828e6746facee8eda4c0e432a515;hb=260d370833ba5449f77d4184a8eb80e5501be900;hpb=afe4bfe2c1ed28a3e75c627edf458d2f40ff16f8 diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml index d6ac5aed8..99a91b3df 100644 --- a/man/systemd.exec.xml +++ b/man/systemd.exec.xml @@ -50,29 +50,32 @@ systemd.service, systemd.socket, - systemd.mount + systemd.mount, + systemd.swap Description - Unit configuration files for services, sockets - and mount points share a subset of configuration - options which define the execution environment of - spawned processes. + Unit configuration files for services, sockets, + mount points and swap devices share a subset of + configuration options which define the execution + environment of spawned processes. This man page lists the configuration options - shared by these three unit types. See + shared by these four unit types. See systemd.unit5 for the common options of all unit configuration files, and - systemd.service5, systemd.socket5 + systemd.service5, + systemd.socket5, + systemd.swap5 and systemd.mount5 for more information on the specific unit configuration files. The execution specific configuration options are configured in the [Service], - [Socket] resp. [Mount] section, depending on the unit + [Socket], [Mount] resp. [Swap] section, depending on the unit type. @@ -248,7 +251,7 @@ octal notation. See umask2 for details. Defaults to - 0002. + 0022. @@ -281,7 +284,17 @@ "-", which indicates that if the file does not exist it won't be read and no error or warning message is - logged. + logged. The files listed with this + directive will be read shortly before + the process is executed. Settings from + these files override settings made + with + Environment=. If + the same variable is set twice from + these files the files will be read in + the order they are specified and the + later setting will override the + earlier setting. @@ -347,7 +360,9 @@ , , , - or + , + , + or . If set to the file descriptor of standard input is @@ -371,9 +386,13 @@ system logger. connects it with the kernel log buffer which is accessible via - dmesg1. - connects standard output to a socket - from socket activation, semantics are + dmesg1. + and work + similarly but copy the output to the + system console as + well. connects + standard output to a socket from + socket activation, semantics are similar to the respective option of StandardInput=. This setting defaults to @@ -403,7 +422,37 @@ /dev/console. - SyslogIdentifer= + TTYReset= + Reset the terminal + device specified with + TTYPath= before and + after execution. Defaults to + no. + + + TTYVHangup= + Disconnect all clients + which have opened the terminal device + specified with + TTYPath= + before and after execution. Defaults + to + no. + + + TTYVTDisallocate= + If the the terminal + device specified with + TTYPath= is a + virtual console terminal try to + deallocate the TTY before and after + execution. This ensures that the + screen and scrollback buffer is + cleared. Defaults to + no. + + + SyslogIdentifier= Sets the process name to prefix log lines sent to syslog or the kernel log buffer with. If not set @@ -539,7 +588,10 @@ various resource limits for executed processes. See setrlimit2 - for details. + for details. Use the string + infinity to + configure no limit on a specific + resource. @@ -578,16 +630,46 @@ - Capabilities= - Controls the + ControlGroupModify= + Takes a boolean + argument. If true, the control groups + created for this unit will be owned by + ther user specified with + User= (and the + configured group), and he can create + subgroups as well as add processes to + the group. + + + + CapabilityBoundingSet= + + Controls which + capabilities to include in the + capability bounding set for the + executed process. See capabilities7 - set for the executed process. Take a - capability string as described in - cap_from_text3. - Note that this capability set is - usually influenced by the capabilities - attached to the executed - file. + for details. Takes a whitespace + separated list of capability names as + read by + cap_from_name3. + Capabilities listed will be included + in the bounding set, all others are + removed. If the list of capabilities + is prefixed with ~ all but the listed + capabilities will be included, the + effect of the assignment + inverted. Note that this option does + not actually set or unset any + capabilities in the effective, + permitted or inherited capability + sets. That's what + Capabilities= is + for. If this option is not used the + capability bounding set is not + modified on process execution, hence + no limits on the capabilities of the + process are enforced. @@ -606,16 +688,21 @@ - CapabilityBoundingSetDrop= - + Capabilities= Controls the - capability bounding set drop set for - the executed process. See capabilities7 - for details. Takes a list of - capability names as read by - cap_from_name3. - + set for the executed process. Take a + capability string describing the + effective, permitted and inherited + capability sets as documented in + cap_from_text3. + Note that these capability sets are + usually influenced by the capabilities + attached to the executed file. Due to + that + CapabilityBoundingSet= + is probably the much more useful + setting. @@ -640,7 +727,7 @@ path for this unit is implied. This option may be used to place executed processes in arbitrary groups in - arbitrary hierachies -- which can be + arbitrary hierarchies -- which can be configured externally with additional execution limits. By default systemd will place all executed processes in separate per-unit control @@ -678,7 +765,7 @@ usual file access controls would permit this. Directories listed in InaccessibleDirectories= - will be made inaccesible for processes + will be made inaccessible for processes inside the namespace. Note that restricting access with these options does not extend to submounts of a @@ -766,6 +853,7 @@ systemd.unit5, systemd.service5, systemd.socket5, + systemd.swap5, systemd.mount5