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Date:      Mon, 13 Nov 2006 08:33:13 -0800
From:      Doug Hardie <bc979@lafn.org>
To:        Ted Mittelstaedt <tedm@toybox.placo.com>
Cc:        freebsd-questions <freebsd-questions@freebsd.org>
Subject:   Re: MAC OS X connection to FreeBSD?
Message-ID:  <529FD995-BE06-4B47-A22A-9885213D024E@lafn.org>
In-Reply-To: <004001c70706$0d571ec0$3c01a8c0@coolf89ea26645>
References:  <454E9F7B.5010105@outstep.com> <454EB6D6.3030807@infowest.com><454EBEEC.1060002@u.washington.edu> <454F210C.9000602@outstep.com> <004001c70706$0d571ec0$3c01a8c0@coolf89ea26645>

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On Nov 13, 2006, at 01:28, Ted Mittelstaedt wrote:

> Apple also doesen't use the UNIX security model.  As near as I can
> tell their core security model is an ACL model not a user/group model.
> Once again this is something that's handled elsewhere.


The user-group security model is alive and the heart of OS-X  
security.  It is used throughout the system even within the user's  
home directory where there are files the user cannot access.  This  
causes problems for backup progrms that want to be run by the user  
with a window interface as they can't backup those files.  ACLs are  
available but not used by default.  The user has to create them if  
desired.  There used to be a FreeBSD project to add ACLs but I don't  
know its status.  i suspect the two implementations will be very  
similar.



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