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From: Charlie Brady <charlieb-supervision@budge.apana.org.au>
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Subject: Re: orphan processes
Date: Tue, 5 Jun 2007 21:09:49 -0400 (EDT)
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To: Adam Megacz <adam@megacz.com>, Paul Jarc <prj@po.cwru.edu>
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On Tue, 5 Jun 2007, Paul Jarc wrote:

>> 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.

Not as such. But do some research on linux "containers" and "pid 
namespace". It's possible to have multiple sets of pids, including 
multiple pid 1s. Each pid 1 will collect orphan processes within its own 
pid namespace.