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Diffstat (limited to 'doc/servicedir.html')
| -rw-r--r-- | doc/servicedir.html | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/servicedir.html b/doc/servicedir.html index 501017b..7cebd53 100644 --- a/doc/servicedir.html +++ b/doc/servicedir.html @@ -103,6 +103,20 @@ automatically start it until it receives a <tt>s6-svc -u</tt> command. If no s6-supervise will not make the service a process group and session leader; the service will be run in the same process group as s6-supervise. If no <tt>nosetsid</tt> file exists, the service has its own process group and is started as a session leader. </li> + <li> An optional regular file named <tt>notification-fd</tt>. If such a file +exists, it means that the service supports +<a href="notifywhenup.html">readiness notification</a>. The file must only + contain an unsigned integer, which is the number of the file descriptor that +the service writes its readiness notification to. (For instance, it should +be 1 if the daemon is <a href="s6-ipcserverd">s6-ipcserverd</a> run with the +<tt>-1</tt> option.) </li> + when a service is started, or restarted, by s6-supervise, if this file +exists and contains a valid descriptor number, s6-supervise will wait for the +notification from the service and broadcast readiness, i.e. any +<a href="s6-svwait.html">s6-svwait -U</a>, +<a href="s6-svlisten1.html">s6-svlisten1 -U</a> or +<a href="s6-svlisten.html">s6-svlisten -U</a> processes will be +triggered. </li> <li> A <a href="fifodir.html">fifodir</a> named <tt>event</tt>. It is automatically created by <a href="s6-supervise.html">s6-supervise</a> if it does not exist. <em>foo</em><tt>/event</tt> |