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

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Message-ID: <20120308200729.GL21812@moon>
Date:	Fri, 9 Mar 2012 00:07:29 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Kees Cook <keescook@...omium.org>, Oleg Nesterov <oleg@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Will Drewry <wad@...omium.org>
Subject: Re: [RFC] c/r: prctl: Add ability to set new mm_struct::exe_file v3

On Thu, Mar 08, 2012 at 12:02:50PM -0800, Andy Lutomirski wrote:
> >
> > I can do that if Andrew agree.
> 
> I'm a bit lost.  nnp updates the MNT_NOSUID checks, not the MNT_NOEXEC
> checks.  (And the effects of the two flags is different in selinux for
> historical reasons.)  I'm sure I'm missing something.
> 

Andy, I've no idea what nnp is ;) I was only about to gather those
ISREG/MNT_NOEXEC to one helper since we indeed have a few places in
kernel which do same thing in open-coded manner.

	Cyrill
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