linux-kernel - Re: [TOMOYO 5/9] Memory and pathname management functions.

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Message-ID: <787b0d920706160208u62f8a2c5q5f94f5986d755d24@mail.gmail.com>
Date:	Sat, 16 Jun 2007 05:08:46 -0400
From:	"Albert Cahalan" <acahalan@...il.com>
To:	"Pavel Machek" <pavel@....cz>
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, takedakn@...data.co.jp,
	hch@...radead.org
Subject: Re: [TOMOYO 5/9] Memory and pathname management functions.

On 6/15/07, Pavel Machek <pavel@....cz> wrote:
> [Albert Cahalan]

> > It's really not worth getting bothered by. Truth is, big
> > giant
> > pathnames break lots of stuff already, both kernel and
> > userspace.
>
> > Just look in /proc for some nice juicy kernel breakage:
> > cwd, exe, fd/*, maps, mounts, mountstats, root, smaps
>
> Well, but we should be fixing that, not adding more. And /proc is
> info-only, while this is security related code.

Security tools read from /proc, so /proc is security-related.

The limit imposed by TOMOYO (or AppArmor) is fine,
despite being security-related. It just needs to fail in
the safe direction: access denied.
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