linux-kernel - Re: [PATCH 12/19] CacheFiles: Permit a process's create SID to be overridden

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Message-ID: <XMMS.LNX.4.64.0611151120240.8593@d.namei>
Date:	Wed, 15 Nov 2006 11:22:55 -0500 (EST)
From:	James Morris <jmorris@...ei.org>
To:	David Howells <dhowells@...hat.com>
cc:	Linus Torvalds <torvalds@...l.org>, Andrew Morton <akpm@...l.org>,
	Stephen Smalley <sds@...ho.nsa.gov>,
	trond.myklebust@....uio.no, selinux@...ho.nsa.gov,
	linux-kernel@...r.kernel.org, aviro@...hat.com, steved@...hat.com
Subject: Re: [PATCH 12/19] CacheFiles: Permit a process's create SID to be
 overridden 

On Wed, 15 Nov 2006, David Howells wrote:

> James Morris <jmorris@...ei.org> wrote:
> 
> > The ability to set this needs to be mediated via MAC policy.
> 
> Something like this, you mean?

Yes, although perhaps writing to tsec->kern_create_sid or similar, which 
then overrides tsec->create_sid if set.  Also need 
/proc/pid/attr/kern_fscreate as a read only node.


> +	error = task_has_perm(current, current, PROCESS__SETFSCREATE);

I wonder if we also need 'relabelto' and 'relabelfrom' permissions, to 
control which labels are being used.



- James
-- 
James Morris
<jmorris@...ei.org>
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