netdev - Re: [PATCH]: Add security check before flushing SAD/SPD

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Message-ID: <Line.LNX.4.64.0703231441390.30602@d.namei>
Date:	Fri, 23 Mar 2007 14:46:48 -0400 (EDT)
From:	James Morris <jmorris@...ei.org>
To:	Eric Paris <eparis@...isplace.org>
cc:	Joy Latten <latten@...tin.ibm.com>,
	David Miller <davem@...emloft.net>, selinux@...ho.nsa.gov,
	netdev@...r.kernel.org, vyekkirala@...stedCS.com
Subject: Re: [PATCH]: Add security check before flushing SAD/SPD

On Fri, 23 Mar 2007, Eric Paris wrote:

> Maybe I'm way out on a limb here but if I am a regular user and I say
> rm /tmp/* and I only have permissions to delete some of the files I
> expect just those couple to be delete, not the whole operation denied.

I don't think this analogy holds up, as rm is a per-file deletion 
operation, and it is the shell which expands the wildcard for you.

A 'flush' has a semantic implication that all entries will be removed, and 
it should be atomic and either succeed or fail at that granularity.



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