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man: finish service man page
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Lennart Poettering
parent
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commit
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@ -62,140 +62,437 @@
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specific to this unit type. See
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specific to this unit type. See
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for the common options of all unit configuration
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for the common options of all unit configuration
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files.</para>
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files. The common configuration items are configured
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in the generic [Unit] and [Install] sections. The
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service specific configuration options are configured
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in the [Service] section.</para>
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<para>Additional options are listed in <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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</refsect1>
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</refsect1>
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<refsect1>
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<refsect1>
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<title>Options</title>
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<title>Options</title>
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<para>Service files must include a [Service] section,
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which carries information about the service and the
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process it supervises. A number of options that may be
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used in this section are shared with other unit
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types. These options are documented in
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>. The
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options specific to the [Service] section of service
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units are the following:</para>
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<variablelist>
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<variablelist>
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<varlistentry>
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<varlistentry>
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<term><varname>Type=</varname></term>
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<term><varname>Type=</varname></term>
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<listitem>
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<para>One of
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<literal>forking</literal>,
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<literal>simple</literal>,
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<literal>finish</literal>,
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<literal>dbus</literal>.</para>
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<para>If set to
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<listitem><para>Configures the process
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<literal>forking</literal>
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start-up type for this service
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(the default) it is expected
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unit. One of <option>simple</option>,
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that the process configured
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<option>forking</option>,
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with
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<option>finish</option>,
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<varname>ExecStart=</varname>
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<option>dbus</option>,
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will start up and call
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<option>notify</option>.</para>
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<function>fork()</function>. The
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parent process is expected to
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finish when start-up is
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complete and all communication
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channels set up. The child
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continues to run as the main
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daemon process. This is the
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behaviour of traditional UNIX
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daemons. If this setting is
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used, it is recommended to also
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use the
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<varname>PIDFile=</varname>
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option, so that systemd can
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identify the main process of
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the daemon. systemd will proceed
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starting follow-up units as soon
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as the parent process exits.</para>
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<para>If set to
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<para>If set to
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<literal>simple</literal> (the
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<option>simple</option> (the default
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recommended value) it is
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value) it is expected that the process
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expected that the process
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configured with
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configured with
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<varname>ExecStart=</varname> is the
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<varname>ExecStart=</varname>
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main process of the service. In this
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is the main process of the
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mode, communication channels must be
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daemon. In this mode,
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installed before the daemon is started
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communication channels must be
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up (e.g. sockets set up by systemd,
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available before the daemon is
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via socket activation), as systemd
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started up (sockets set up by systemd),
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will immediately proceed starting
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as systemd will immediately proceed
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follow-up units.</para>
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starting follow-up units.</para>
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<para>Behaviour of
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<para>If set to
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<literal>finish</literal> is
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<option>forking</option> it is
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similar to
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expected that the process configured
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<literal>simple</literal>,
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with <varname>ExecStart=</varname>
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however it is expected that
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will start up and call
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the process has to exit before
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<function>fork()</function>. The
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systemd starts follow-up
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parent process is expected to finish
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units. <varname>ValidNoProcess=</varname>
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when start-up is complete and all
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is particularly useful for
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communication channels set up. The
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this type of service.</para>
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child continues to run as the main
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daemon process. This is the behaviour
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of traditional UNIX daemons. If this
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|
setting is used, it is recommended to
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also use the
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<varname>PIDFile=</varname> option, so
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that systemd can identify the main
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process of the daemon. systemd will
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proceed starting follow-up units as
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soon as the parent process
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exits.</para>
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<para>Behaviour of
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<para>Behaviour of
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<literal>dbus</literal> is
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<option>finish</option> is similar
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similar to
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to <option>simple</option>, however
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<literal>simple</literal>,
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it is expected that the process has to
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however it is expected that
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exit before systemd starts follow-up
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the daemon acquires a name on
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units. <varname>ValidNoProcess=</varname>
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the D-Bus bus, as configured
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is particularly useful for this type
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by
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of service.</para>
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<varname>BusName=</varname>. Systemd will
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proceed starting follow-up
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<para>Behaviour of
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units after the D-Bus bus name has been
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<option>dbus</option> is similar to
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acquired.</para>
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<option>simple</option>, however it
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is expected that the daemon acquires a
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name on the D-Bus bus, as configured
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by
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<varname>BusName=</varname>. systemd
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will proceed starting follow-up units
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after the D-Bus bus name has been
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acquired.</para>
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<para>Behaviour of
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<option>notify</option> is similar to
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<option>simple</option>, however it is
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expected that the daemon sends a
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notification message via
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<citerefentry><refentrytitle>sd_notify</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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or an equivalent call when it finished
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starting up. systemd will proceed
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starting follow-up units after this
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notification message has been sent. If
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this option is used
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<option>NotifyAccess=</option> (see
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below) must be set to open access to
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the notification socket provided by
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systemd.</para>
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</listitem>
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</listitem>
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</varlistentry>
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</varlistentry>
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<varlistentry>
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<varlistentry>
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<term><varname>ValidNoProcess=</varname></term>
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<term><varname>ValidNoProcess=</varname></term>
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<listitem>
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<para>Takes a boolean value
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<listitem><para>Takes a boolean value
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that specifies whether the service
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that specifies whether the service
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shall be considered active
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shall be considered active even when
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even when all its processes
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all its processes exited. Defaults to
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exited. Defaults to <literal>no</literal>.</para>
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<option>no</option>.</para>
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</listitem>
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</listitem>
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</varlistentry>
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</varlistentry>
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<varlistentry>
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<varlistentry>
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<term><varname>PIDFile=</varname></term>
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<term><varname>PIDFile=</varname></term>
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<listitem>
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<para>Takes an absolute file
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<listitem><para>Takes an absolute file
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name pointing to the PID file
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name pointing to the PID file of this
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of this daemon. Use of this
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daemon. Use of this option is
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option is recommended for
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recommended for services where
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services where
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<varname>Type=</varname> is set to
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<varname>Type=</varname> is
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<option>forking</option>.</para>
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set to
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<literal>forking</literal>.</para>
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</listitem>
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</listitem>
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</varlistentry>
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</varlistentry>
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<varlistentry>
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<varlistentry>
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<term><varname>BusName=</varname></term>
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<term><varname>BusName=</varname></term>
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<listitem>
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<para>Takes a D-Bus bus name,
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<listitem><para>Takes a D-Bus bus
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where this service is reachable
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name, where this service is reachable
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as. This option is mandatory
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as. This option is mandatory for
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for services where
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services where
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<varname>Type=</varname> is
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<varname>Type=</varname> is set to
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set to
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<option>dbus</option>, but its use
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<literal>dbus</literal>, but
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is otherwise recommended as well if
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its use is otherwise
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the process takes a name on the D-Bus
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recommended as well if the
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bus.</para>
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process takes a name on the
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D-Bus bus.</para>
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</listitem>
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</listitem>
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</varlistentry>
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</varlistentry>
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<varlistentry>
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<varlistentry>
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<term><varname>ExecStart=</varname></term>
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<term><varname>ExecStart=</varname></term>
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<listitem>
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<listitem><para>Takes a command line
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<para>Takes a command line
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that is executed when this service
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that is executed when this
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shall be started up. The first token
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service shall be started
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of the command line must be an
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up. The first word of the
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absolute file name, then followed by
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command line must be an
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arguments for the process. It is
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absolute file name. It is
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mandatory to set this option for all
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mandatory to set this option
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services. This option may not be
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for all services.</para>
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specified more than once. Optionally,
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</listitem>
|
if the absolute file name is prefixed
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with @, the second token will be
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passed as argv[0] to the executed
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|
process, followed by the further
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|
arguments specified. Unless
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|
<option>Type=forking</option> is set,
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|
the process started via this command
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|
line will be considered the main
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|
process of the
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daemon.</para></listitem>
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</varlistentry>
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|
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|
<varlistentry>
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|
<term><varname>ExecStartPre=</varname></term>
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|
<term><varname>ExecStartPost=</varname></term>
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|
<listitem><para>Additional commands
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|
that are executed before (resp. after)
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|
the command in
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|
<varname>ExecStart=</varname>. If
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|
specified more than once, all commands
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|
are executed one after the other,
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|
serially. Use of these settings is
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|
optional.</para></listitem>
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|
</varlistentry>
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|
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|
<varlistentry>
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|
<term><varname>ExecReload=</varname></term>
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|
<listitem><para>Commands to execute to
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|
trigger a configuration reload in the
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|
service. If used more than once, all
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|
commands are executed one after the
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|
other, serially. Use of this setting is optional.
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|
</para></listitem>
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|
</varlistentry>
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|
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|
<varlistentry>
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|
<term><varname>ExecStop=</varname></term>
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|
<listitem><para>Commands to execute to
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|
stop the service started via
|
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|
<varname>ExecStart=</varname>. If used
|
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|
more than once, all commands are
|
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|
executed one after the other,
|
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|
serially. Use of this setting is
|
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|
optional. All processes remaining for
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|
a service after the commands
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|
configured in this option are run are
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|
terminated according to the
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|
<varname>KillMode=</varname> setting
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|
(see below). If this option is not
|
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|
specified the process is terminated
|
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|
right-away when service stop is
|
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|
requested.</para></listitem>
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|
</varlistentry>
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|
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|
<varlistentry>
|
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|
<term><varname>ExecStopPost=</varname></term>
|
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|
<listitem><para>Additional commands
|
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|
that are executed after the service
|
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|
was stopped using the commands
|
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|
configured in
|
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|
<varname>ExecStop=</varname>. If
|
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|
specified more than once, all commands
|
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|
are executed one after the other,
|
||||||
|
serially. Use of these settings is
|
||||||
|
optional.</para></listitem>
|
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|
</varlistentry>
|
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|
|
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|
<varlistentry>
|
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|
<term><varname>RestartSec=</varname></term>
|
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|
<listitem><para>Configures the time to
|
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|
sleep before restarting a service (as
|
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|
configured with
|
||||||
|
<varname>Restart=</varname>). Takes a
|
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|
unit-less value in seconds, or a time
|
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|
span value such as "5min
|
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|
20s". Defaults to
|
||||||
|
100ms.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>TimeoutSec=</varname></term>
|
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|
<listitem><para>Configures the time to
|
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|
wait for start-up and stop. If a
|
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|
daemon service does not signal
|
||||||
|
start-up completion within the
|
||||||
|
configured time the service will be
|
||||||
|
considered failed and be shut down
|
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|
again. If a service is asked to stop
|
||||||
|
but does not terminate in the
|
||||||
|
specified time it will be terminated
|
||||||
|
forcibly via SIGTERM, and after
|
||||||
|
another delay of this time with
|
||||||
|
SIGKILL. (See
|
||||||
|
<option>KilleMode=</option>
|
||||||
|
below.) Takes a unit-less value in seconds, or a
|
||||||
|
time span value such as "5min
|
||||||
|
20s". Pass 0 to disable the timeout
|
||||||
|
logic. Defaults to
|
||||||
|
60s.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>Restart=</varname></term>
|
||||||
|
<listitem><para>Configures whether the
|
||||||
|
main service process shall be restarted when
|
||||||
|
it exists. Takes one of
|
||||||
|
<option>once</option>,
|
||||||
|
<option>restart-on-success</option> or
|
||||||
|
<option>restart-always</option>. If
|
||||||
|
set to <option>once</option> (the
|
||||||
|
default) the service will not be
|
||||||
|
restarted when it exits. If set to
|
||||||
|
<option>restart-on-success</option> it
|
||||||
|
will be restarted only when it exited
|
||||||
|
cleanly, i.e. terminated with an exit
|
||||||
|
code of 0. If set to
|
||||||
|
<option>restart-always</option> the
|
||||||
|
service will be restarted regardless
|
||||||
|
whether it exited cleanly or not, or
|
||||||
|
got terminated abnormally by a
|
||||||
|
signal.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>PermissionsStartOnly=</varname></term>
|
||||||
|
<listitem><para>Takes a boolean
|
||||||
|
argument. If true, the permission
|
||||||
|
related execution options as
|
||||||
|
configured with
|
||||||
|
<varname>User=</varname> and similar
|
||||||
|
options (see
|
||||||
|
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
||||||
|
for more information) are only applied
|
||||||
|
to the process started with
|
||||||
|
<varname>ExecStart=</varname>, and not
|
||||||
|
to the various other
|
||||||
|
<varname>ExecStartPre=</varname>,
|
||||||
|
<varname>ExecStartPost=</varname>,
|
||||||
|
<varname>ExecReload=</varname>,
|
||||||
|
<varname>ExecStop=</varname>,
|
||||||
|
<varname>ExecStopPost=</varname>
|
||||||
|
commands. If false, the setting is
|
||||||
|
applied to all configured commands the
|
||||||
|
same way. Defaults to
|
||||||
|
false.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>RootDirectoryStartOnly=</varname></term>
|
||||||
|
<listitem><para>Takes a boolean
|
||||||
|
argument. If true, the root directory
|
||||||
|
as configured with the
|
||||||
|
<varname>RootDirectory=</varname>
|
||||||
|
option (see
|
||||||
|
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
||||||
|
for more information) is only applied
|
||||||
|
to the process started with
|
||||||
|
<varname>ExecStart=</varname>, and not
|
||||||
|
to the various other
|
||||||
|
<varname>ExecStartPre=</varname>,
|
||||||
|
<varname>ExecStartPost=</varname>,
|
||||||
|
<varname>ExecReload=</varname>,
|
||||||
|
<varname>ExecStop=</varname>,
|
||||||
|
<varname>ExecStopPost=</varname>
|
||||||
|
commands. If false, the setting is
|
||||||
|
applied to all configured commands the
|
||||||
|
same way. Defaults to
|
||||||
|
false.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>SysVStartPriority=</varname></term>
|
||||||
|
<listitem><para>Set the SysV start
|
||||||
|
priority to use to order this service
|
||||||
|
in relation to SysV services lacking
|
||||||
|
LSB headers. This option is only
|
||||||
|
necessary to fix ordering in relation
|
||||||
|
to legacy SysV services, that have no
|
||||||
|
ordering information encoded in the
|
||||||
|
script headers. As such it should only
|
||||||
|
be used as temporary compatibility
|
||||||
|
option, and not be used in new unit
|
||||||
|
files. Almost always it is a better
|
||||||
|
choice to add explicit ordering
|
||||||
|
directives via
|
||||||
|
<varname>After=</varname> or
|
||||||
|
<varname>Before=</varname>,
|
||||||
|
instead. For more details see
|
||||||
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. If
|
||||||
|
used, pass an integer value in the
|
||||||
|
range 0-99.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>KillMode=</varname></term>
|
||||||
|
<listitem><para>Specifies how
|
||||||
|
processes of this service shall be
|
||||||
|
killed. One of
|
||||||
|
<option>control-group</option>,
|
||||||
|
<option>process-group</option>,
|
||||||
|
<option>process</option>,
|
||||||
|
<option>none</option>.</para>
|
||||||
|
|
||||||
|
<para>If set to
|
||||||
|
<option>control-group</option> all
|
||||||
|
remaining processes in the control
|
||||||
|
group of this service will be
|
||||||
|
terminated on service stop, after the
|
||||||
|
stop command (as configured with
|
||||||
|
<varname>ExecStop=</varname>) is
|
||||||
|
executed. If set to
|
||||||
|
<option>process-group</option> only
|
||||||
|
the members of the process group of
|
||||||
|
the main service process are
|
||||||
|
killed. If set to
|
||||||
|
<option>process</option> only the main
|
||||||
|
process itself is killed. If set to
|
||||||
|
<option>none</option> no process is
|
||||||
|
killed. In this case only the stop
|
||||||
|
command will be executed on service
|
||||||
|
stop, but no process be killed
|
||||||
|
otherwise. Processes remaining alive
|
||||||
|
after stop are left in their control
|
||||||
|
group and the control group continues
|
||||||
|
to exist after stop unless it is
|
||||||
|
empty. Defaults to
|
||||||
|
<option>control-croup</option>.</para>
|
||||||
|
|
||||||
|
<para>Processes will first be
|
||||||
|
terminated via SIGTERM. If then after
|
||||||
|
a delay (configured via the
|
||||||
|
<option>TimeoutSec=</option> option)
|
||||||
|
processes still remain, the
|
||||||
|
termination request is repeated with
|
||||||
|
the SIGKILL signal. See
|
||||||
|
<citerefentry><refentrytitle>kill</refentrytitle><manvolnum>2</manvolnum></citerefentry>
|
||||||
|
for more
|
||||||
|
information.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>NonBlocking=</varname></term>
|
||||||
|
<listitem><para>Set O_NONBLOCK flag
|
||||||
|
for all file descriptors passed via
|
||||||
|
socket-based activation. If true, all
|
||||||
|
file descriptors >= 3 (i.e. all except
|
||||||
|
STDIN/STDOUT/STDERR) will have
|
||||||
|
the O_NONBLOCK flag set and hence are in
|
||||||
|
non-blocking mode. This option is only
|
||||||
|
useful in conjunction with a socket
|
||||||
|
unit, as described in
|
||||||
|
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>. Defaults
|
||||||
|
to false.</para></listitem>
|
||||||
|
</varlistentry>
|
||||||
|
|
||||||
|
<varlistentry>
|
||||||
|
<term><varname>NotifyAccess=</varname></term>
|
||||||
|
<listitem><para>Controls access to the
|
||||||
|
service status notification socket, as
|
||||||
|
accessible via the
|
||||||
|
<citerefentry><refentrytitle>sd_notify</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
||||||
|
call. Takes one of
|
||||||
|
<option>none</option> (the default),
|
||||||
|
<option>main</option> or
|
||||||
|
<option>all</option>. If
|
||||||
|
<option>none</option> no daemon status
|
||||||
|
updates are accepted by the service
|
||||||
|
processes, all status update messages
|
||||||
|
are ignored. If <option>main</option>
|
||||||
|
only service updates sent from the
|
||||||
|
main process of the service are
|
||||||
|
accepted. If <option>all</option> all
|
||||||
|
services updates from all members of
|
||||||
|
the service's control group are
|
||||||
|
accepted. This option must be set to
|
||||||
|
open access to the notification socket
|
||||||
|
when using
|
||||||
|
<varname>Type=notify</varname> (see above).</para></listitem>
|
||||||
</varlistentry>
|
</varlistentry>
|
||||||
|
|
||||||
</variablelist>
|
</variablelist>
|
||||||
@ -205,8 +502,9 @@
|
|||||||
<title>See Also</title>
|
<title>See Also</title>
|
||||||
<para>
|
<para>
|
||||||
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
||||||
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>
|
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
||||||
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
||||||
|
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
||||||
</para>
|
</para>
|
||||||
</refsect1>
|
</refsect1>
|
||||||
|
|
||||||
|
|||||||
@ -246,8 +246,8 @@
|
|||||||
mounts listed in
|
mounts listed in
|
||||||
<filename>/etc/fstab</filename>
|
<filename>/etc/fstab</filename>
|
||||||
that have the
|
that have the
|
||||||
<literal>auto</literal> and
|
<option>auto</option> and
|
||||||
<literal>comment=systemd.mount</literal>
|
<option>comment=systemd.mount</option>
|
||||||
mount options set.</para>
|
mount options set.</para>
|
||||||
|
|
||||||
<para>systemd automatically
|
<para>systemd automatically
|
||||||
|
|||||||
@ -102,6 +102,16 @@
|
|||||||
<option>false</option> and <option>off</option> are
|
<option>false</option> and <option>off</option> are
|
||||||
equivalent.</para>
|
equivalent.</para>
|
||||||
|
|
||||||
|
<para>Time span values encoded in unit files can be
|
||||||
|
written in various formats. A stand-alone number
|
||||||
|
specifies a time in seconds. If suffixed with a time
|
||||||
|
unit, the unit is honored. A concatentation of
|
||||||
|
multiple value with units is supported, in which case
|
||||||
|
the values are added up. Example: "50" refers to 50
|
||||||
|
seconds; "2min 200ms" refers to 2 minutes plus 200
|
||||||
|
milliseconds, i.e. 120200ms. The following time units
|
||||||
|
are understood: s, min, h, d, w, ms, us.</para>
|
||||||
|
|
||||||
<para>Empty lines and lines starting with # or ; are
|
<para>Empty lines and lines starting with # or ; are
|
||||||
ignored. This may be used for commenting.</para>
|
ignored. This may be used for commenting.</para>
|
||||||
|
|
||||||
|
|||||||
@ -2625,8 +2625,8 @@ static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
|
|||||||
DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
|
DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
|
||||||
|
|
||||||
static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
|
static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
|
||||||
[SERVICE_FORKING] = "forking",
|
|
||||||
[SERVICE_SIMPLE] = "simple",
|
[SERVICE_SIMPLE] = "simple",
|
||||||
|
[SERVICE_FORKING] = "forking",
|
||||||
[SERVICE_FINISH] = "finish",
|
[SERVICE_FINISH] = "finish",
|
||||||
[SERVICE_DBUS] = "dbus",
|
[SERVICE_DBUS] = "dbus",
|
||||||
[SERVICE_NOTIFY] = "notify"
|
[SERVICE_NOTIFY] = "notify"
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user