linux-kernel - Re: [PATCH 01/11] Security: Add hook to get full maclabel xattr name

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Message-Id: <1204246805.7363.23.camel@heimdal.trondhjem.org>
Date:	Thu, 28 Feb 2008 17:00:05 -0800
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Dave Quigley <dpquigl@...ho.nsa.gov>,
	Stephen Smalley <sds@...ho.nsa.gov>, casey@...aufler-ca.com,
	viro@....linux.org.uk, bfields@...ldses.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	LSM List <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH 01/11] Security: Add hook to get full maclabel xattr
	name


On Thu, 2008-02-28 at 19:51 -0500, Christoph Hellwig wrote:
> On Thu, Feb 28, 2008 at 04:50:06PM -0800, Trond Myklebust wrote:
> > As I've told you several times before: we're _NOT_ putting private
> > ioctl^Hxattrs onto the wire. If the protocol can't be described in an
> > RFC, then it isn't going in no matter what expletive you choose to
> > use...
> 
> It's as unstructured as the named attributes already in.  Or file data
> for that matter.

Describing what is supposed to be a security mechanism in a structured
fashion for use in a protocol should hardly be an impossible task (and
AFAICS, Dave & co are making good progress in doing so). If it is, then
that casts serious doubt on the validity of the security model...

There should be no need for ioctls.

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