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Merge pull request #1854 from poettering/unit-deps

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Dependency engine improvements
This commit is contained in:
Tom Gundersen
2015-11-11 23:14:12 +01:00
parent a9ae08421e ee735086f8
commit fb5c8184a9
31 changed files with 555 additions and 207 deletions
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man/systemd.exec.xml
+40 -4
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@@ -76,6 +76,31 @@
unit type.</para>
</refsect1>
<refsect1>
<title>Automatic Dependencies</title>
<para>A few execution parameters result in additional, automatic
dependencies to be added.</para>
<para>Units with <varname>WorkingDirectory=</varname> or
<varname>RootDirectory=</varname> set automatically gain
dependencies of type <varname>Requires=</varname> and
<varname>After=</varname> on all mount units required to access
the specified paths. This is equivalent to having them listed
explicitly in <varname>RequiresMountsFor=</varname>.</para>
<para>Similar, units with <varname>PrivateTmp=</varname> enabled
automatically get mount unit dependencies for all mounts
required to access <filename>/tmp</filename> and
<filename>/var/tmp</filename>.</para>
<para>Units whose output standard output or error output is
connected to any other sink but <option>null</option>,
<option>tty</option> and <option>socket</option> automatically
acquire dependencies of type <varname>After=</varname> on
<filename>journald.socket</filename>.</para>
</refsect1>
<refsect1>
<title>Options</title>
@@ -93,7 +118,9 @@
and the respective user's home directory if run as user. If
the setting is prefixed with the <literal>-</literal>
character, a missing working directory is not considered
fatal.</para></listitem>
fatal. Note that setting this parameter might result in
additional dependencies to be added to the unit (see
above).</para></listitem>
</varlistentry>
<varlistentry>
@@ -104,7 +131,9 @@
project='man-pages'><refentrytitle>chroot</refentrytitle><manvolnum>2</manvolnum></citerefentry>
system call. If this is used, it must be ensured that the
process binary and all its auxiliary files are available in
the <function>chroot()</function> jail.</para></listitem>
the <function>chroot()</function> jail. Note that setting this
parameter might result in additional dependencies to be added
to the unit (see above).</para></listitem>
</varlistentry>
<varlistentry>
@@ -378,6 +407,7 @@
<para>This setting defaults to
<option>null</option>.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>StandardOutput=</varname></term>
<listitem><para>Controls where file descriptor 1 (STDOUT) of
@@ -443,8 +473,11 @@
<para>This setting defaults to the value set with
<option>DefaultStandardOutput=</option> in
<citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
which defaults to <option>journal</option>.</para></listitem>
which defaults to <option>journal</option>. Note that setting
this parameter might result in additional dependencies to be
added to the unit (see above).</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>StandardError=</varname></term>
<listitem><para>Controls where file descriptor 2 (STDERR) of
@@ -455,8 +488,11 @@
standard error. This setting defaults to the value set with
<option>DefaultStandardError=</option> in
<citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
which defaults to <option>inherit</option>.</para></listitem>
which defaults to <option>inherit</option>. Note that setting
this parameter might result in additional dependencies to be
added to the unit (see above).</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>TTYPath=</varname></term>
<listitem><para>Sets the terminal device node to use if