Subject: Re: [PATCH 3/4] security: capabilities patch (version 0.4.4), part
	3/4: introduce new capabilities
From: Joshua Brindle <method@gentoo.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: David Madore <david.madore@ens.fr>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Linux Kernel mailing-list <linux-kernel@vger.kernel.org>,
       LSM mailing-list <linux-security-module@vger.kernel.org>
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Date: Mon, 18 Sep 2006 08:12:16 -0400
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On Mon, 2006-09-18 at 14:04 +0200, Pavel Machek wrote:
> Hi!
> 
> > > > The benefits of this are so minuscule and the cost is so high if you are 
> > > > ever to use it that it simply won't happen..
> > > 
> > > I'm withdrawing that patch anyway, in favor of a LSM-style approach,
> > > the "cuppabilities" module (cf. the patch I posted a couple of hours
> > > ago with that word in the title, and I'll be posting a new version in
> > > a day or so, or cf. <URL:
> > > http://www.madore.org/~david/linux/cuppabilities/
> > >  >).  In this case, the relative cost will be lower since the
> > > security_ops->inode_permission() hook is called no matter what.
> > > 
> > 
> > You misunderstand. I don't mean the performance cost is high, I mean the
> > cost of an application to actually be able to run without open() (what I
> > was saying before, static built, no glibc, no conf files, no name
> > lookups, etc). I never see this being used in the real world because of
> > the extreme limitations.
> 
> It is already being used. See config_seccomp.

Where are the users?

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