Re: 'svc -d' doesn't wait for exit

Brian Reichert <[email protected]> wrote:
> What I want, I guess, is a variant of 'svc -d' that will not return
> until the supervised process has indeed gone down.
>
> Is there a preferred mechanism to accomplish this, other than a
> busy-wait on checking the output of 'svstat'?

That's the simplest way.

> Or, has someone already engineered a patch to supervise?  It doesn't
> _seem_ like a difficult change to make...

You would need to change (or wrap) svc, but not necessarily supervise.
supervise already learns when the service exits via SIGCHLD, and it
updates supervise/status at that time.  It cold also be modified to
send a notification of the update via a new named pipe under
supervise/, but in any case svc would have to be changed (or wrapped)
to wait for the update.


paul