linux-kernel - Re: [patch] remove MNT_NOEXEC check for PROT

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Message-ID: <45169C0C.5010001@aknet.ru>
Date:	Sun, 24 Sep 2006 18:54:04 +0400
From:	Stas Sergeev <stsp@...et.ru>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Hugh Dickins <hugh@...itas.com>, Andrew Morton <akpm@...l.org>,
	Ulrich Drepper <drepper@...hat.com>,
	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps

Hello.

Alan Cox wrote:
> If you want a tmpfs with noexec and a shared memory space with exec why
> don't you just sort out mounting two different tmpfs instances ?
The one that goes to /dev/shm should allow PROT_EXEC, yet
not allow executing the binaries with execve(). How?
There may be other tmpfs instances, I think they are
unaffected, but what to do with the /dev/shm one?

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