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correct information about implicit dependencies (#3730)

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systemd.special.xml: corrections about implicit
dependencies for basic.target, sysinit.target and shutdown.target.

systemd.target.xml: corrections about implicit dependencies for
target units in general.
This commit is contained in:
Michal Soltys 2016-07-15 04:20:45 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent 20f873deb2
commit f749954d92
2 changed files with 25 additions and 10 deletions
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16
man/systemd.special.xml
View File

@ -127,9 +127,9 @@
<listitem>
<para>A special target unit covering basic boot-up.</para>
<para>systemd automatically adds dependencies of the types
<varname>Requires=</varname> and <varname>After=</varname>
for this target unit to all services (except for those with
<para>systemd automatically adds dependency of the type
<varname>After=</varname> for this target unit to all
services (except for those with
<varname>DefaultDependencies=no</varname>).</para>
<para>Usually, this should pull-in all local mount points plus
@ -509,8 +509,9 @@
system shutdown.</para>
<para>Services that shall be terminated on system shutdown
shall add <varname>Conflicts=</varname> dependencies to this
unit for their service unit, which is implicitly done when
shall add <varname>Conflicts=</varname> and
<varname>Before=</varname> dependencies to this unit for
their service unit, which is implicitly done when
<varname>DefaultDependencies=yes</varname> is set (the
default).</para>
</listitem>
@ -579,6 +580,11 @@
<varlistentry>
<term><filename>sysinit.target</filename></term>
<listitem>
<para>systemd automatically adds dependencies of the types
<varname>Requires=</varname> and <varname>After=</varname>
for this target unit to all services (except for those with
<varname>DefaultDependencies=no</varname>).</para>
<para>This target pulls in the services required for system
initialization. System services pulled in by this target should
declare <varname>DefaultDependencies=no</varname> and specify

19
man/systemd.target.xml
View File

@ -82,11 +82,20 @@
<refsect1>
<title>Automatic Dependencies</title>
<para>Unless <varname>DefaultDependencies=</varname> in the <literal>[Unit]</literal> section is set to
<option>no</option>, target units will implicitly complement all configured dependencies of type
<varname>Wants=</varname>, <varname>Requires=</varname> with dependencies of type <varname>After=</varname>, unless
an ordering dependency of any kind between the target and the respective other unit is already in place. Note that
this behaviour is disabled if either unit has <varname>DefaultDependencies=no</varname>.</para>
<para>Unless <varname>DefaultDependencies=</varname> is set to
<option>no</option> in either of releated units or an explicit ordering
dependency is already defined, target units will implicitly complement all
configured dependencies of type <varname>Wants=</varname> or
<varname>Requires=</varname> with dependencies of type
<varname>After=</varname>. Note that <varname>Wants=</varname> or
<varname>Requires=</varname> must be defined in the target unit itself - if
you for example define <varname>Wants=</varname>some.target in
some.service, the implicit ordering will not be added.</para>
<para>All target units automatically gain <varname>Conflicts=</varname>
dependency against shutdown.target unless <varname>DefaultDependencies=</varname>
is set to <option>no</option>.</para>
</refsect1>
<refsect1>