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| author | Simon McVittie <simon.mcvittie@collabora.co.uk> | 2016-11-09 17:52:48 +0000 |
|---|---|---|
| committer | Simon McVittie <simon.mcvittie@collabora.co.uk> | 2016-11-22 11:24:20 +0000 |
| commit | 239618fac6fab97dd4d90047322a967d52598d35 (patch) | |
| tree | 05ed39661fdbc24d91ceafb76508f051d5b75863 /doc | |
| parent | 28bbac7dc8d60eea409d7e13229c248550b81dbd (diff) | |
| download | dbus-239618fac6fab97dd4d90047322a967d52598d35.tar.gz | |
Spec: document systemd activation
We didn't say that SystemdService existed. Now we do, together with
enough context to make it make sense.
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Reviewed-by: Philip Withnall <philip.withnall@collabora.co.uk>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=98671
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/dbus-specification.xml | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/doc/dbus-specification.xml b/doc/dbus-specification.xml index 5feffa33..2e72c313 100644 --- a/doc/dbus-specification.xml +++ b/doc/dbus-specification.xml @@ -5152,6 +5152,39 @@ property on screen 0 of the display, pointing to this bus. </para> </sect3> + + <sect3 id="message-bus-starting-services-systemd"> + <title>systemd Activation</title> + + <para> + Service description files may contain a + <literal>SystemdService</literal> key. Its value is the name of a + <ulink + url="https://www.freedesktop.org/wiki/Software/systemd/">systemd</ulink> + service, for example + <literal>dbus-com.example.MyDaemon.service</literal>. + </para> + + <para> + If this key is present, the bus daemon may carry out activation for + this D-Bus service by sending a request to systemd asking it to + start the systemd service whose name is the value of + <literal>SystemdService</literal>. For example, the reference + <literal>dbus-daemon</literal> has a + <literal>--systemd-activation</literal> option that enables this + feature, and that option is given when it is started by systemd. + </para> + + <para> + On the well-known system bus, it is a common practice to set + <literal>SystemdService</literal> to <literal>dbus-</literal>, + followed by the well-known bus name, followed by + <literal>.service</literal>, then register that name as an alias + for the real systemd service. This allows D-Bus activation of a + service to be enabled or disabled independently of whether the + service is started by systemd during boot. + </para> + </sect3> </sect2> <sect2 id="message-bus-types"> |