linux-kernel - Re: [PATCH 3/4] security: capabilities patch (version 0.4.4), part 3/4: introduce new capabilities

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Message-ID: <20060911065111.GA4850@clipper.ens.fr>
Date:	Mon, 11 Sep 2006 08:51:11 +0200
From:	David Madore <david.madore@....fr>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	Linux Kernel mailing-list <linux-kernel@...r.kernel.org>,
	LSM mailing-list <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH 3/4] security: capabilities patch (version 0.4.4), part 3/4: introduce new capabilities

On Mon, Sep 11, 2006 at 08:10:17AM +0200, Jan Engelhardt wrote:
> You cannot reasonable run a program without CAP_REG_OPEN, because 
> ld.so, libc.so and libdl.so all may load a ton of required files 
> underneath you.

A program might quite conceivably drop CAP_REG_OPEN willingly once
it's started, or the administrator might use capset() on it once it's
running.  But, again, this cap is mostly a proof of concept: the
really useful ones are CAP_REG_WRITE and CAP_REG_SXID.

-- 
     David A. Madore
    (david.madore@....fr,
     http://www.madore.org/~david/ )
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