From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ingo Oeser <ioe-lkml@rameria.de>
Cc: Anton Blanchard <anton@samba.org>,
linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] Add prctl to change endian of a task
Date: Sun, 02 Apr 2006 15:56:09 +0100 [thread overview]
Message-ID: <1143989770.29060.28.camel@localhost.localdomain> (raw)
In-Reply-To: <200604021637.49759.ioe-lkml@rameria.de>
On Sul, 2006-04-02 at 16:37 +0200, Ingo Oeser wrote:
> What about limiting this to be called once per task or VM?
> This will prevent most abuse scenarios, I can think of.
Abuse is a possible problem but you can deal with that. If you don't
inherit endian changes then the problem doesn't occur. If you must
inherit them then drop the inheritance when an suid/sgid exec occurs as
we do with some other properties.
Can you explain however why you can't do this simply by using a binary
magic number in the executable to indicate which endian it is, or do you
really need to flip it ?
Alan
next prev parent reply other threads:[~2006-04-02 14:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-01 22:29 [PATCH] Add prctl to change endian of a task Anton Blanchard
2006-04-02 14:37 ` Ingo Oeser
2006-04-02 14:56 ` Alan Cox [this message]
2006-04-03 22:36 ` Anton Blanchard
2006-04-03 22:40 ` David S. Miller
2006-04-06 5:13 ` Paul Mackerras
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