X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.exec.xml;h=01356e4c459ac9b1b01874cb313331a0f6d3c53e;hp=610c821dc095025117444e72bb5d9cfee1964970;hb=57183d117a1d6a96d71ce99d648beb0d2b36228d;hpb=c5b37953b7835562348d71ad5514faefa4cfb10b
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 610c821dc..01356e4c4 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -894,6 +894,24 @@
for details.
+
+ PrivateDevices=
+
+ Takes a boolean
+ argument. If true, sets up a new /dev
+ namespace for the executed processes
+ and only adds API pseudo devices such
+ as /dev/null,
+ /dev/zero or
+ /dev/random to
+ it, but no physical devices such as
+ /dev/sda. This is
+ useful to securely turn off physical
+ device access by the executed
+ process. Defaults to
+ false.
+
+
MountFlags=
@@ -932,6 +950,23 @@
this service.
+
+ SELinuxContext=
+
+ Set the SELinux
+ security context of the executed
+ process. If set, this will override
+ the automated domain
+ transition. However, the policy still
+ needs to autorize the transition. This
+ directive is ignored if SELinux is
+ disabled. If prefixed by
+ -, all errors will
+ be ignored. See
+ setexeccon3
+ for details.
+
+
IgnoreSIGPIPE=
@@ -966,7 +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
@@ -994,7 +1029,97 @@
merged. If the empty string is
assigned, the filter is reset, all
prior assignments will have no
- effect.
+ 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).
+
+
+ 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.