linux-kernel - Re: [PATCH 2/4] signals: send_signal: use si_fromuser() to detect from_ancestor

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Date:	Tue, 6 Oct 2009 03:09:56 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Sukadev Bhattiprolu <sukadev@...ibm.com>,
	Linux Containers <containers@...ts.osdl.org>,
	roland@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] signals: send_signal: use si_fromuser() to detect
	from_ancestor_ns

On 10/05, Sukadev Bhattiprolu wrote:
>
> Oleg Nesterov [oleg@...hat.com] wrote:
> | Sorry for confusion.
> |
> | > But sure, we could use force_sig_info() in caller.
> |
> | Yes, because this makes the code more explicit imho. And we can avoid
> | the further complicatiions in send_signal() path.
>
> Although, one small drawback would be the different behavior for the
> SIGKILL in load_aout_binary() to the container-init itself calling:
>
> 	kill(getpid(), SIGKILL);

could you clarify? load_aout_binary(), like other ->load_binary()
methods does send_sig(SIGKILL, current, 0) ?

And thanks for review.

Oleg.

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