X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsystemd.exec.xml;h=7dbe05d265123e08411eedacfbbb7dd606551591;hb=a03c5fd2d86c4e3f758a5ca0d98638e5c8bd8d8d;hp=0c6ca5acfb347212eef790704ab64202f249ec17;hpb=c0467cf387548dc98c0254f63553d862b35a84e5;p=elogind.git diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml index 0c6ca5acf..7dbe05d26 100644 --- a/man/systemd.exec.xml +++ b/man/systemd.exec.xml @@ -248,7 +248,7 @@ Controls the CPU affinity of the executed processes. Takes a space-separated - list of CPU indexes. This option may + list of CPU indices. This option may be specified more than once in which case the specificed CPU affinity masks are merged. If the empty string is @@ -472,9 +472,9 @@ StandardError= Controls where file - descriptor 2 (STDERR) of the executed - processes is connected to. The - available options are identical to + descriptor 2 (STDERR) of the + executed processes is connected to. + The available options are identical to those of StandardOutput=, with one exception: if set to @@ -491,8 +491,8 @@ TTYPath= Sets the terminal - device node to use if standard input, - output or stderr are connected to a + device node to use if standard input, output, + or error are connected to a TTY (see above). Defaults to /dev/console. @@ -1001,7 +1001,7 @@ list of system call names. If this setting is used, all system calls executed by the unit - process except for the listed ones + processes except for the listed ones will result in immediate process termination with the SIGSYS signal @@ -1031,23 +1031,100 @@ prior assignments will have no effect. - If you specify both types of this option - (i.e. whitelisting and blacklisting) the first - encountered will take precedence and will - dictate the default action (termination - or approval of a system call). Then the - next occurrences of this option will add or - delete the listed system calls from the set - of the filtered system calls, depending of - its type and the default action (e.g. You - have started with a whitelisting of - read and write - and right after it add a blacklisting of - write, then - write will be removed from the set) + If you specify both types of + this option (i.e. whitelisting and + blacklisting), the first encountered + will take precedence and will dictate + the default action (termination or + approval of a system call). Then the + next occurrences of this option will + add or delete the listed system calls + from the set of the filtered system + calls, depending of its type and the + default action. (For example, if you have started + with a whitelisting of + read and + write, and right + after it add a blacklisting of + write, then + write will be + removed from the set.) + + SystemCallErrorNumber= + + Takes an + errno error number + name to return when the system call + filter configured with + SystemCallFilter= + is triggered, instead of terminating + the process immediately. Takes an + error name such as + EPERM, + EACCES or + EUCLEAN. When this + setting is not used, or when the empty + string is assigned, the process will be + terminated immediately when the filter + is triggered. + + + + SystemCallArchitectures= + + Takes a space + separated list of architecture + identifiers to include in the system + call filter. The known architecture + identifiers are + x86, + x86-64, + x32, + arm as well as the + special identifier + native. Only system + calls of the specified architectures + will be permitted to processes of this + unit. This is an effective way to + disable compatibility with non-native + architectures for processes, for + example to prohibit execution of + 32-bit x86 binaries on 64-bit x86-64 + systems. The special + native identifier + implicitly maps to the native + architecture of the system (or more + strictly: to the architecture the + system manager is compiled for). Note + that setting this option to a + non-empty list implies that + native is included + too. By default, this option is set to + the empty list, i.e. no architecture + system call filtering is + applied. + + + + Personality= + + Controls which + kernel architecture + uname2 + shall report, when invoked by unit + processes. Takes one of + x86 and + x86-64. This is + useful when running 32bit services on + a 64bit host system. If not specified + the personality is left unmodified and + thus reflects the personality of the + host system's + kernel. + @@ -1131,6 +1208,17 @@ tty. + + $MAINPID + + The PID of the units + main process if it is known. This is + only set for control processes as + invoked by + ExecReload= and + similar. + + $MANAGERPID