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Date:      Mon, 19 Mar 2001 23:40:43 -0500 (EST)
From:      Robert Watson <rwatson@freebsd.org>
To:        Sergey Babkin <babkin@bellatlantic.net>
Cc:        security@freebsd.org, Wes Peters <wes@softweyr.com>, fs@freebsd.org
Subject:   Re: about common group & user ID space (PR kern/14584)
Message-ID:  <Pine.NEB.3.96L.1010319233826.69303D-100000@fledge.watson.org>
In-Reply-To: <Pine.NEB.3.96L.1010319223106.69303B-100000@fledge.watson.org>

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On Mon, 19 Mar 2001, Robert Watson wrote:

> Personally, I'm a fan of the AFS ACL model, where protections are present
> only on directories, hard links are prohibited, and sub-directories
> inherit protections on creation.  I even had an implementation of this on
> FreeBSD at one point, although it's quite dated now.  However, ACLs have
> a number of things going for them:

Just as an aside, btw, AFS uses a common numeric namespace for both users
and groups, as well as for remote users from other cells.  Users can also
allocate and manage groups on demand.  The single numeric namespace makes
things a lot more consistent :-).  (although I think it allocates negative
values to groups, and positive ones to users..)

Robert N M Watson             FreeBSD Core Team, TrustedBSD Project
robert@fledge.watson.org      NAI Labs, Safeport Network Services




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