X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsystemd.exec.xml;h=19839937c71f2eadf25bc4912c1ed8f2576bf2d2;hb=d8148cc59d0faa44d26fe27f91eb177334b4e08b;hp=f50161f30c9bcbd3cab6bcba70a0164ec6274b76;hpb=3fde5f30bda2a70d97f3dc8fa918e42e1c07cc2c;p=elogind.git
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index f50161f30..19839937c 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
@@ -295,9 +295,11 @@
for the assignment.
Example:
- Environment="VAR1=word1 word2" VAR2=word3 "VAR3=word 5 6"
+ Environment="VAR1=word1 word2" VAR2=word3 "VAR3=$word 5 6"
gives three variables VAR1,
- VAR2, VAR3.
+ VAR2, VAR3
+ with the values word1 word2,
+ word3, $word 5 6.
@@ -470,9 +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
@@ -489,8 +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.
@@ -846,9 +848,9 @@
system namespace for the executed
processes and mounts private
/tmp and
- /var/tmp directories
- inside it, that are not shared by
- processes outside of the
+ /var/tmp
+ directories inside it that is not
+ shared by processes outside of the
namespace. This is useful to secure
access to temporary files of the
process, but makes sharing between
@@ -856,9 +858,17 @@
/tmp or
/var/tmp
impossible. All temporary data created
- by service will be removed after service
- is stopped. Defaults to
- false.
+ by service will be removed after
+ the service is stopped. Defaults to
+ false. Note that it is possible to run
+ two or more units within the same
+ private /tmp and
+ /var/tmp
+ namespace by using the
+ JoinsNamespaceOf=
+ directive, see
+ systemd.unit5
+ for details.
@@ -874,6 +884,30 @@
available to the executed process.
This is useful to securely turn off
network access by the executed
+ process. Defaults to false. Note that
+ it is possible to run two or more
+ units within the same private network
+ namespace by using the
+ JoinsNamespaceOf=
+ directive, see
+ systemd.unit5
+ 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.
@@ -916,6 +950,36 @@
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.
+
+
+
+ AppArmorProfile=
+
+ Take a profile name as argument.
+ The process executed by the unit will switch to
+ this profile when started. Profiles must already
+ be loaded in the kernel, or the unit will fail.
+ This result in a non operation if AppArmor is not
+ enabled. If prefixed by -, all errors
+ will be ignored.
+
+
+
IgnoreSIGPIPE=
@@ -950,7 +1014,7 @@
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
@@ -978,9 +1042,102 @@
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. (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.
+
@@ -1021,10 +1178,13 @@
$USER
+ $LOGNAME
$HOME
+ $SHELL
- User name and home
- directory. Set for the units which
+ User name (twice), home
+ directory, and the login shell.
+ The variables are set for the units that
have User= set,
which includes user
systemd instances.
@@ -1050,17 +1210,28 @@
$XDG_VTNR
The identifier of the
- session, and the seat name, and
+ session, the seat name, and
virtual terminal of the session. Set
by
pam_systemd8
for login sessions.
$XDG_SEAT and
- $XDG_VTNR will be
- only set when attached to a seat and a
+ $XDG_VTNR will
+ only be set when attached to a seat and a
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
@@ -1080,6 +1251,20 @@
sd_listen_fds3.
+
+
+ $TERM
+
+ Terminal type, set
+ only for units connected to a terminal
+ (StandardInput=tty,
+ StandardOutput=tty,
+ or
+ StandardError=tty).
+ See
+ termcap5.
+
+
Additional variables may be configured by the