linux-kernel - Re: [RFC][PATCH][v2] Define/use siginfo_from_ancestor

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Message-ID: <20081126174439.GA427@us.ibm.com>
Date:	Wed, 26 Nov 2008 09:44:39 -0800
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	ebiederm@...ssion.com, daniel@...ac.com, xemul@...nvz.org,
	containers@...ts.osdl.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH][v2] Define/use siginfo_from_ancestor_ns()

| |    Actually, I think this is enough to solve most problems,
| |    the further changes can be discussed later. OK, the only
| |    "real" problem is SIGSTOP, afaics. This looks solveable.
| 
| Yes, SIGSTOP even from parent is ignored due to the SIGNAL_UNKILLABLE
| check in get_signal_to_deliver.

Actually with sig_task_ignored() patch, http://lkml.org/lkml/2008/11/18/251
SIGSTOP gets dropped early. To eventually allow SIGSTOP from ancestor ns,
we need to pass 'from_ancestor_ns' into sig_ignored() ?
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