X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.exec.xml;h=8b7645c4d6993b66fc3dafc7ae8adfeefae1a11d;hp=0c6ca5acfb347212eef790704ab64202f249ec17;hb=bcddd5bf8033b0c9cb15a9d017b7714ebe21473a;hpb=c0467cf387548dc98c0254f63553d862b35a84e5
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 0c6ca5acf..8b7645c4d 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -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 STDIN, STDOUT,
+ or STDERR 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
@@ -1031,21 +1031,95 @@
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 (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).
+
+ Note that setting
+ SystemCallFilter=
+ implies a
+ SystemCallArchitectures=
+ setting of native
+ (see below), unless that option is
+ configured otherwise.
+
+
+
+ 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 32bit
+ x86 binaries on 64bit 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. Note
+ that configuring a system call filter
+ with
+ SystemCallFilter=
+ (above) implies a
+ native architecture
+ list, unless configured
+ otherwise.