unit: trim cgroups when going down

[elogind.git] / man / systemd.socket.xml

diff --git a/man/systemd.socket.xml b/man/systemd.socket.xml
index e25b5a00fda1096d3081cc86daf74fb8f6428876..20dc00ed0120a15f8f63830d021a5f418d213775 100644 (file)
--- a/man/systemd.socket.xml
+++ b/man/systemd.socket.xml
@@ -70,7 +70,13 @@
                 in the [Socket] section.</para>
 
                 <para>Additional options are listed in
-                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+                which define the execution environment the
+                <option>ExecStartPre=</option>,
+                <option>ExecStartPost=</option>,
+                <option>ExecStopPre=</option> and
+                <option>ExecStoptPost=</option> commands are executed
+                in.</para>
 
                 <para>For each socket file a matching service file
                 (see
@@ -89,6 +95,21 @@
                 which services are instantiated for each incoming
                 connection.</para>
 
+                <para>Unless <varname>DefaultDependencies=</varname>
+                is set to <option>false</option>, socket units will
+                implicitly have dependencies of type
+                <varname>Requires=</varname> and
+                <varname>After=</varname> on
+                <filename>sysinit.target</filename> as well as
+                dependencies of type <varname>Conflicts=</varname> and
+                <varname>Before=</varname> on
+                <filename>shutdown.target</filename>. These ensure
+                that socket units pull in basic system
+                initialization, and are terminated cleanly prior to
+                system shutdown. Only sockets involved with early
+                boot or late system shutdown should disable this
+                option.</para>
+
                 <para>Socket units may be used to implement on-demand
                 starting of services, as well as parallelized starting
                 of services.</para>
@@ -245,8 +266,10 @@
                                 directories are automatically created
                                 if needed. This option specifies the
                                 file system access mode used when
-                                creating these directories. Defaults
-                                to 0755.</para></listitem>
+                                creating these directories. Takes an
+                                access mode in octal
+                                notation. Defaults to
+                                0755.</para></listitem>
                         </varlistentry>
 
                         <varlistentry>
@@ -255,7 +278,8 @@
                                 system socket of FIFO, this option
                                 specifies the file system access mode
                                 used when creating the file
-                                node. Defaults to
+                                node. Takes an access mode in octal
+                                notation. Defaults to
                                 0666.</para></listitem>
                         </varlistentry>
 
@@ -416,16 +440,18 @@
                         <varlistentry>
                                 <term><varname>ExecStartPre=</varname></term>
                                 <term><varname>ExecStartPost=</varname></term>
-                                <listitem><para>Takes a command line,
-                                which is executed before (resp. after)
-                                the listening sockets/FIFOs are created and
+                                <listitem><para>Takes one or more
+                                command lines, which are executed
+                                before (resp. after) the listening
+                                sockets/FIFOs are created and
                                 bound. The first token of the command
                                 line must be an absolute file name,
                                 then followed by arguments for the
-                                process. If specified more than once,
-                                all commands are executed one after
-                                the other, fully serialized. The use of
-                                these settings is optional.</para></listitem>
+                                process. Multiple command lines may be
+                                specified following the same scheme as
+                                used for
+                                <varname>ExecStartPre=</varname> of
+                                service unit files.</para></listitem>
                         </varlistentry>
 
                         <varlistentry>
@@ -434,10 +460,11 @@
                                 <listitem><para>Additional commands
                                 that are executed before (resp. after)
                                 the listening sockets/FIFOs are closed
-                                and removed. If specified more than
-                                once, all commands are executed one
-                                after the other, fully serialized. The use of
-                                these settings is optional.</para></listitem>
+                                and removed. Multiple command lines
+                                may be specified following the same
+                                scheme as used for
+                                <varname>ExecStartPre=</varname> of
+                                service unit files.</para></listitem>
                         </varlistentry>
 
                         <varlistentry>
@@ -485,7 +512,7 @@
         <refsect1>
                   <title>See Also</title>
                   <para>
-                          <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+                          <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                           <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
                           <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                           <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,