linux-kernel - Re: [RFC] c/r: prctl: Add ability to set new mm_struct::exe

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Date:	Wed, 29 Feb 2012 19:23:07 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Kees Cook <keescook@...omium.org>, Tejun Heo <tj@...nel.org>,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [RFC] c/r: prctl: Add ability to set new mm_struct::exe_file

On 02/29/2012 07:16 PM, Cyrill Gorcunov wrote:
> Hi guys,
> 
> at restore time we would like to have a way for /proc/pid/exe
> symlink recovering. So I thought extending prctl might be
> a good idea.
> 
> Still maybe there some other good and 'right' way to do it,
> so I would like to gather opinions.

If using the prctl for this, then taking a given file descriptor
(with fcheck) instead of taking path and opening it in kernel is
better.

> Please review, thanks!
> 
> 	Cyrill

Thanks,
Pavel
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