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From: prj@po.cwru.edu (Paul Jarc)
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Subject: Re: runsv and process groups
Date: Thu, 26 Aug 2004 16:57:54 -0400
Organization: What did you have in mind?  A short, blunt, human pyramid?
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	(Gerrit Pape's message of "Thu, 26 Aug 2004 20:48:13 +0000")
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Gerrit Pape <pape@smarden.org> wrote:
> Once setsid() is called there's no way back.

But there is after setpgid().

> Hm, I'm not sure yet.  What do you think about runsvdir running runsv in
> a new process group, and not runsv the run script?

It depends what kinds of arrangements you want to make possible.  If
you want to allow all processes to be in the same group, then you need
an option to turn off all changing of process groups, and it doesn't
matter where the change happens when it is enabled.  If you want to
allow one service to be in the process group with runsvdir and all the
runsvs, then the change can only happen for the run script, not runsv,
and the script change change its process group back to that of its
parent (setpgid(0, getpgid(getppid()))), perhaps with a new chpst
operation.


paul