[systemd-commits] man/systemd.service.xml
Zbigniew Jędrzejewski-Szmek
zbyszek at kemper.freedesktop.org
Tue Mar 19 19:18:05 PDT 2013
man/systemd.service.xml | 59 +++++++++++++++++++++++++++++-------------------
1 file changed, 36 insertions(+), 23 deletions(-)
New commits:
commit 4c42e8e1618e2352cb628d459593233a86202ce6
Author: Zbigniew Jędrzejewski-Szmek <zbyszek at in.waw.pl>
Date: Tue Mar 19 22:13:48 2013 -0400
man/service: document behaviour on failure
https://bugs.freedesktop.org/show_bug.cgi?id=38355
diff --git a/man/systemd.service.xml b/man/systemd.service.xml
index 2dd3b19..b82a5c1 100644
--- a/man/systemd.service.xml
+++ b/man/systemd.service.xml
@@ -302,7 +302,9 @@
argument must be an absolute path
name.</para>
- <para>When
+ <para>When <varname>Type</varname> is
+ not <option>oneshot</option>, only one
+ command may be given. When
<varname>Type=oneshot</varname> is
used, more than one command may be
specified. Multiple command lines may
@@ -316,19 +318,22 @@
for compatibility with parsers
suitable for XDG
<filename>.desktop</filename> files.
- The commands are invoked one by one
- sequentially in the order they appear
- in the unit file. When
- <varname>Type</varname> is not
- <option>oneshot</option>, only one
- command may be given. Lone semicolons
- may be escaped as
+ Lone semicolons may be escaped as
'<literal>\;</literal>'. If the empty
string is assigned to this option the
list of commands to start is reset,
prior assignments of this option will
have no effect.</para>
+ <para>If more than one command is
+ specified, the commands are invoked
+ one by one sequentially in the order
+ they appear in the unit file. If one
+ of the commands fails (and is not
+ prefixed with '<literal>-</literal>'),
+ other lines are not executed and the
+ unit is considered failed.</para>
+
<para>Unless
<varname>Type=forking</varname> is
set, the process started via this
@@ -343,9 +348,8 @@
line (i.e. the program to execute) may
not include specifiers.</para>
- <para>On top of that basic environment
- variable substitution is
- supported. Use
+ <para>Basic environment variable
+ substitution is supported. Use
<literal>${FOO}</literal> as part of a
word, or as a word of its own on the
command line, in which case it will be
@@ -357,8 +361,8 @@
word on the command line, in which
case it will be replaced by the value
of the environment variable split up
- at whitespace, resulting in zero or more
- arguments. Note that the first
+ at whitespace, resulting in zero or
+ more arguments. Note that the first
argument (i.e. the program to execute)
may not be a variable, since it must
be a literal and absolute path
@@ -386,13 +390,14 @@
lines. If shell command lines are to
be used they need to be passed
explicitly to a shell implementation
- of some kind. Example:
- <literal>ExecStart=/bin/sh -c 'dmesg | tac'</literal></para>
+ of some kind. Example:</para>
+ <programlisting>ExecStart=/bin/sh -c 'dmesg | tac'
+ </programlisting>
<para>For services run by a user
instance of systemd the special
environment variable
- <literal>MANAGERPID</literal> is set
+ <varname>$MANAGERPID</varname> is set
to the PID of the systemd
instance.</para>
</listitem>
@@ -410,6 +415,11 @@
that multiple command lines are allowed
and the commands are executed one
after the other, serially.</para>
+
+ <para>If any of those commands (not
+ prefixed with '<literal>-</literal>')
+ fail, the rest are not executed and
+ the unit is considered failed.</para>
</listitem>
</varlistentry>
@@ -425,14 +435,17 @@
optional. Specifier and environment
variable substitution is supported
here following the same scheme as for
- <varname>ExecStart=</varname>. One
- additional special environment
- variables is set: if known
- <literal>$MAINPID</literal> is set to
+ <varname>ExecStart=</varname>.</para>
+
+ <para>One additional special
+ environment variables is set: if known
+ <varname>$MAINPID</varname> is set to
the main process of the daemon, and
may be used for command lines like the
- following: <command>/bin/kill -HUP
- $MAINPID</command>.</para></listitem>
+ following:</para>
+
+ <programlisting>/bin/kill -HUP $MAINPID</programlisting>
+ </listitem>
</varlistentry>
<varlistentry>
@@ -456,7 +469,7 @@
service stop is requested. Specifier
and environment variable substitution
is supported (including
- <literal>$MAINPID</literal>, see
+ <varname>$MAINPID</varname>, see
above).</para></listitem>
</varlistentry>
More information about the systemd-commits
mailing list