DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=yahoo.com;
  h=X-YMail-OSG:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID;
  b=6Ltg5g5WYyo6hzBU+0/YS2sAx8Mb1XNBGxzv17V8wquTyKObanjVP45LkgDvOwI86BwkdPxYdC/N4VDEsBjDey+2ugOAvyMufZxM8gXU1m21soyhedxFqkSP0MG4nKcEsfW+yXCpt7ORDj2Rqd8t9UVyyG35+sqtTuql58ZCtek=;
Date: Wed, 15 Aug 2007 13:50:17 -0700 (PDT)
From: Marc Perkel <mperkel@yahoo.com>
Subject: Re: Thinking outside the box on file systems
To: Phillip Susi <psusi@cfl.rr.com>
Cc: Kyle Moffett <mrmacman_g4@mac.com>,
       Michael Tharp <gxti@partiallystapled.com>, alan <alan@clueserver.org>,
       LKML Kernel <linux-kernel@vger.kernel.org>,
       Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
In-Reply-To: <46C36580.5030006@cfl.rr.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7BIT
Message-ID: <920558.27414.qm@web52504.mail.re2.yahoo.com>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1286
Lines: 42


--- Phillip Susi <psusi@cfl.rr.com> wrote:

> Marc Perkel wrote:
> > 
> > Kyle - you are still missing the point. chmod goes
> > away. File permissions goes away. Directories as
> you
> > know them goes away. 
> 
> You are missing the point Marc... open()ing a file
> will have to perform 
> a number of these pattern matches to decide if it is
> allowed or not... 
> this would be a HUGE overhead.
> 
> 

I don't see it as being any worse that what we have
now. To open a file you have to start at the bottom
and open each directory and evaluate the permissions
on the way to the file. In my system you have to look
up the permission of the string at each "/" separator.
Seems to me that every system would have these same
steps.


Marc Perkel
Junk Email Filter dot com
http://www.junkemailfilter.com


      ____________________________________________________________________________________
Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center.
http://autos.yahoo.com/green_center/ 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/