command.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>FileDescriptorStoreMax=</varname></term>
+ <listitem><para>Configure how many
+ file descriptors may be stored in the
+ service manager for the service using
+ <citerefentry><refentrytitle>sd_pid_notify_with_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>'s
+ <literal>FDSTORE=1</literal>
+ messages. This is useful for
+ implementing service restart schemes
+ where the state is serialized to
+ <filename>/run</filename> and the file
+ descriptors passed to the service
+ manager, to allow restarts without
+ losing state. Defaults to 0, i.e. no
+ file descriptors may be stored in the
+ service manager by default. All file
+ descriptors passed to the service
+ manager from a specific service are
+ passed back to the service's main
+ process on the next service
+ restart. Any file descriptors passed
+ to the service manager are
+ automatically closed when POLLHUP or
+ POLLERR is seen on them, or when the
+ service is fully stopped and no job
+ queued or being executed for
+ it.</para></listitem>
+ </varlistentry>
+
</variablelist>
<para>Check