linux-kernel - Re: Upstream first policy

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Message-ID: <alpine.LFD.2.00.1003081125020.3989@localhost.localdomain>
Date:	Mon, 8 Mar 2010 11:32:16 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	Al Viro <viro@...IV.linux.org.uk>, Ingo Molnar <mingo@...e.hu>,
	James Morris <jmorris@...ei.org>, linux-kernel@...r.kernel.org,
	Kyle McMartin <kyle@...artin.ca>,
	Alexander Viro <viro@....linux.org.uk>
Subject: Re: Upstream first policy

On Mon, 8 Mar 2010, Alan Cox wrote:
>
> Its path based in the sense that public_html has a path based meaning by
> convention understood by httpd. Copy a jpeg into your public_html and it
> will be labelled up for http access under the Fedora shipped rule sets.

Umm. That was my point all along: you can basically "emulate" pathname 
based decisions by labeling things. But it's not always the most direct 
approach, and some people clearly do find AppArmor (or Tomoyo, which I 
think is also largely based on pathnames) to be more "intuitive".

So I don't understand it when people then complain about a mechanism that 
base their decisions fundamentally on the pathname. It's not like AppArmor 
got rid of the traditional unix inode-based protections and replaced them 
(like your silly DEC10 example).

But whatever. The fact is, Ubuntu uses it. We'll merge it.

				Linus
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