linux-kernel - Re: [PATCH 3/3] CRED: Move the effective capabilities into the cred struct

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Message-Id: <1190304546.6763.86.camel@heimdal.trondhjem.org>
Date:	Thu, 20 Sep 2007 12:09:06 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	casey@...aufler-ca.com
Cc:	Andrew Morgan <morgan@...nel.org>,
	David Howells <dhowells@...hat.com>, viro@....linux.org.uk,
	hch@...radead.org, sds@...ho.nsa.gov, linux-kernel@...r.kernel.org,
	selinux@...ho.nsa.gov, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 3/3] CRED: Move the effective capabilities into the
	cred struct

On Thu, 2007-09-20 at 08:36 -0700, Casey Schaufler wrote:

> Ok, what can't be copied, and why can't it be copied?

In practice, no security information can be copied because the checks
are all made on the "current" pointer. There is no mechanism other than
'current' for passing security information around.

Trond
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