To: Chris Wright <chrisw@osdl.org>
Cc: Alexander Nyberg <alexn@dsv.su.se>, linux-kernel@vger.kernel.org,
       akpm@osdl.org, rmk+lkml@arm.linux.org.uk
Subject: Re: Capabilities across execve
References: <1110627748.2376.6.camel@boxen>
	<20050313032117.GA28536@shell0.pdx.osdl.net>
	<20050315215719.A12283@flint.arm.linux.org.uk>
	<20050315224219.GA5389@shell0.pdx.osdl.net>
	<1110930112.1210.44.camel@localhost.localdomain>
	<20050315235851.GF5389@shell0.pdx.osdl.net>
From: Olaf Dietsche <olaf+list.linux-kernel@olafdietsche.de>
Date: Sat, 19 Mar 2005 01:02:43 +0100
In-Reply-To: <20050315235851.GF5389@shell0.pdx.osdl.net> (Chris Wright's
 message of "Tue, 15 Mar 2005 15:58:51 -0800")
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Chris Wright <chrisw@osdl.org> writes:

> * Alexander Nyberg (alexn@dsv.su.se) wrote:
>> I can see useful scenarios of having the possiblity of capabilities per
>> inode (it appears the xattr way wins somewhat in the previous
>> discussion).
>
> It's how it should be done.

I agree to disagree :-)

>> Chris, have you seen any capabilities+xattr patches around?
>
> http://www.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.4-fcap/

Which is pretty useless, since it doesn't apply to any recent
(> 2.4.3) kernel. If you insist on a xattr based approach, take
Andy Lutomirski's <http://www.stanford.edu/~luto/linux-fscap/>
patch. It is more recent, a lot smaller and considerably more
understandable (at least for me ;-).

Regards, Olaf.
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