linux-kernel - Re: [PATCH] exit: PR_SET_ANCHOR for marking processes as reapers for child processes

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Date:	Wed, 3 Feb 2010 23:31:01 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Lennart Poettering <lennart@...ttering.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] exit: PR_SET_ANCHOR for marking processes as reapers
	for child processes

On Tue, Feb 02, 2010 at 01:04:57PM +0100, Lennart Poettering wrote:
>
>This patch adds a simple flag for each process that marks it as an
>"anchor" process for all its children and grandchildren. If a child of
>such an anchor dies all its children will not be reparented to init, but
>instead to this anchor, escaping this anchor process is not possible. A
>task with this flag set hence acts is little "sub-init".
>

This will break the applictions which using 'getppid() == 1' to check
if its real parent is dead or not...

-- 
Live like a child, think like the god.
 
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