From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.io/gmane.comp.sysutils.supervision.general/1431
Path: news.gmane.org!not-for-mail
From: prj@po.cwru.edu (Paul Jarc)
Newsgroups: gmane.comp.sysutils.supervision.general
Subject: Re: orphan processes
Date: Tue, 05 Jun 2007 20:43:36 -0400
Organization: What did you have in mind?  A short, blunt, human pyramid?
Message-ID: <m3fy55ewts.fsf@multivac.cwru.edu>
References: <x3y7iyey1l.fsf@nowhere.com>
NNTP-Posting-Host: lo.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: sea.gmane.org 1181090625 24765 80.91.229.12 (6 Jun 2007 00:43:45 GMT)
X-Complaints-To: usenet@sea.gmane.org
NNTP-Posting-Date: Wed, 6 Jun 2007 00:43:45 +0000 (UTC)
Cc: supervision@list.skarnet.org
To: Adam Megacz <adam@megacz.com>
Original-X-From: supervision-return-1668-gcsg-supervision=m.gmane.org@list.skarnet.org Wed Jun 06 02:43:44 2007
Return-path: <supervision-return-1668-gcsg-supervision=m.gmane.org@list.skarnet.org>
Envelope-to: gcsg-supervision@gmane.org
Original-Received: from antah.skarnet.org ([212.85.147.14])
	by lo.gmane.org with smtp (Exim 4.50)
	id 1Hvjck-0007V5-RO
	for gcsg-supervision@gmane.org; Wed, 06 Jun 2007 02:43:42 +0200
Original-Received: (qmail 2327 invoked by uid 76); 6 Jun 2007 00:44:04 -0000
Mailing-List: contact supervision-help@list.skarnet.org; run by ezmlm
List-Post: <mailto:supervision@list.skarnet.org>
List-Help: <mailto:supervision-help@list.skarnet.org>
List-Unsubscribe: <mailto:supervision-unsubscribe@list.skarnet.org>
List-Subscribe: <mailto:supervision-subscribe@list.skarnet.org>
List-Archive: <http://www.skarnet.org/lists/>
Original-Received: (qmail 2322 invoked from network); 6 Jun 2007 00:44:04 -0000
In-Reply-To: <x3y7iyey1l.fsf@nowhere.com> (Adam Megacz's message of "Tue, 05
	Jun 2007 17:17:42 -0700")
Mail-Copies-To: nobody
Mail-Followup-To: Adam Megacz <adam@megacz.com>, supervision@list.skarnet.org
Original-Lines: 18
User-Agent: Gnus/5.110003 (No Gnus v0.3) Emacs/21.4 (gnu/linux)
X-Junkmail-Status: score=10/49, host=mpv4.tis.cwru.edu
X-Junkmail-SD-Raw: score=unknown,
	refid=str=0001.0A090204.4666033C.00B2,ss=1,fgs=0,
	ip=129.22.105.51,
	so=2006-09-22 03:48:54,
	dmn=5.3.10/2007-02-21
Xref: news.gmane.org gmane.comp.sysutils.supervision.general:1431
Archived-At: <http://permalink.gmane.org/gmane.comp.sysutils.supervision.general/1431>

Adam Megacz <adam@megacz.com> wrote:
> Somehow script2.sh dies, script3 gets reparented to init (I'm running
> runit-as-a-child-of-svrinit), and then eventually when script1
> finishes and the whole thing restarts, I wind up with two copies of
> script3.sh.

If script1 starts by putting itself in a new process group before
spawning any children, then at the end it can send SIGTERM to its
process group to kill all related processes.

> Anyways, this got me thinking: is there any way in UNIX for the leader
> of a process/session group to tell the system that orphan processes in
> that group should be reparented to the leader rather than "pid 1"?

I don't think so.


paul