linux-kernel - Re: [AppArmor 01/41] Pass struct vfsmount to the inode

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Message-ID: <20070526143419.550bea93@the-village.bc.nu>
Date:	Sat, 26 May 2007 14:34:19 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Crispin Cowan <crispin@...ell.com>
Cc:	casey@...aufler-ca.com, Andreas Gruenbacher <agruen@...e.de>,
	Jeremy Maitin-Shepard <jbms@....edu>,
	James Morris <jmorris@...ei.org>, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [AppArmor 01/41] Pass struct vfsmount to the inode_create LSM
 hook

> As such, AA can detect whether you did exec("gzip") or exec("gunzip")
> and apply the policy relevant to the program. It could apply different

That's not actually useful for programs which link the same binary to
multiple names because if you don't consider argv[0] as well I can run
/usr/bin/gzip passing argv[0] of "gunzip" and get one set of policies and
the other set of behaviour.

And then we have user added hardlinks of course.

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