linux-kernel - Re: Thinking outside the box on file systems

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Message-ID: <633206.92836.qm@web52512.mail.re2.yahoo.com>
Date:	Wed, 15 Aug 2007 13:20:07 -0700 (PDT)
From:	Marc Perkel <mperkel@...oo.com>
To:	Kyle Moffett <mrmacman_g4@....com>
Cc:	Phillip Susi <psusi@....rr.com>,
	Michael Tharp <gxti@...tiallystapled.com>,
	alan <alan@...eserver.org>,
	LKML Kernel <linux-kernel@...r.kernel.org>,
	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>
Subject: Re: Thinking outside the box on file systems


--- Kyle Moffett <mrmacman_g4@....com> wrote:

> On Aug 15, 2007, at 14:05:23, Marc Perkel wrote:
> > In this new system setfacl, chmod, chown, and
> chgrp all go away  
> > except inside of an emulation layer. File and
> directories no longer  
> > have permissions. People have permission to naming
> patterns. So if  
> > you put a file into a tree or move a tree then
> those who have  
> > permissions to the tree have access to the files.
> >
> > It eliminates the step of having to apply
> permission after moving  
> > files into a tree. You don't have to change file
> permissions  
> > because files no longer have permissions.
> 
> And I'm trying to tell you that unless you have some
> magic new  
> algorithm that turns NP-complete problems into
> O(log(N)) problems,  
> your idea won't work.  You can't just say "I just do
> one little thing  
> (mv) and the entire rest of the computer
> automagically changes to  
> match", because that would imply a single unscalable
> global kernel  
> lock.  "Pattern"-matching is either NP-complete or
> high-polynomial- 
> order, depending on how its implemented, and if you
> want to do a  
> recursive-chmod during a directory move then you're
> going to have  
> race-conditions out the ass.  If you have code or
> solid math to back  
> up your postings then please do so, but otherwise
> you're just wasting  
> time and bandwidth.
> 
> 


Kyle - you are still missing the point. chmod goes
away. File permissions goes away. Directories as you
know them goes away. 



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


       
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