Date: Sat, 4 Oct 2008 16:42:39 -0700
From: Arjan van de Ven <arjan@infradead.org>
To: Kees Cook <kees.cook@canonical.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] proc: add "personality" to process status file
Message-ID: <20081004164239.0c1483a4@infradead.org>
In-Reply-To: <20081004220220.GK10632@outflux.net>
References: <20081002211424.GJ10632@outflux.net>
	<20081004145149.52c34ee7@infradead.org>
	<20081004220220.GK10632@outflux.net>
Organization: Intel
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On Sat, 4 Oct 2008 15:02:20 -0700
Kees Cook <kees.cook@canonical.com> wrote:

> On Sat, Oct 04, 2008 at 02:51:49PM -0700, Arjan van de Ven wrote:
> > On Thu, 2 Oct 2008 14:14:24 -0700
> > Kees Cook <kees.cook@canonical.com> wrote:
> > 
> > > There is no sane way to query the personality flags of arbitrary
> > > process from userspace.  This adds the flags to
> > > the /proc/$pid/status file. For example, to detect
> > > READ_IMPLIES_EXEC:
> > > 
> > 
> > .. I'm sure local exploit writers will love this to find out which
> > processes to attack.
> > Realistically, this probably shouldn't be in a world-readable file.
> 
> Nothing else seemed appropriate, but I could make a brand new proc
> file, if that's sensible.  "status_private" ?

how about a file called "personality" that has each set bit as an ascii
version ?
(one per line maybe)


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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