linux-kernel - Re: [PATCH v4] fs: allow protected cross-uid sticky symlinks

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Message-ID: <20100603011840.GA4971@outflux.net>
Date:	Wed, 2 Jun 2010 18:18:40 -0700
From:	Kees Cook <kees.cook@...onical.com>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	Al Viro <viro@...iv.linux.org.uk>, Eric Paris <eparis@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	James Morris <jmorris@...ei.org>, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	David Howells <dhowells@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Tim Gardner <tim.gardner@...onical.com>,
	"Serge E. Hallyn" <serue@...ibm.com>
Subject: Re: [PATCH v4] fs: allow protected cross-uid sticky symlinks

Hi,

On Thu, Jun 03, 2010 at 08:51:28AM +0800, Dave Young wrote:
> On Thu, Jun 3, 2010 at 6:23 AM, Kees Cook <kees.cook@...onical.com> wrote:
> > v2:
> >  - moved sysctl extern into security.h.
> 
> Not in v4?
> 
> > v3:
> >  - move into VFS core.
> >  - rename sysctl, invert logic.

Right, as part of the "move out of security/" the sysctl moved to live in
fs/namei.c (and therefore needed an extern in kernel/sysctl.c).

-Kees

-- 
Kees Cook
Ubuntu Security Team
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