linux-kernel - Re: [PATCH] SMACK netfilter smacklabel socket match

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Message-Id: <200902181418.35622.paul.moore@hp.com>
Date:	Wed, 18 Feb 2009 14:18:35 -0500
From:	Paul Moore <paul.moore@...com>
To:	etienne <etienne.basset@...ericable.fr>
Cc:	Casey Schaufler <casey@...aufler-ca.com>,
	"Linux-Kernel" <linux-kernel@...r.kernel.org>,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH] SMACK netfilter smacklabel socket match

On Wednesday 18 February 2009 01:29:11 pm etienne wrote:
> OK, I'm about to send a new patch; but while testing my patches and reading
> code, I noticed another bug :
>
> In smackfs.c:smk_write_netlbladdr
> the netmask mask.s_addr is not handled correctly, the netmask should be :
> 1- computed in u32
> 2- converted to be32 !!
> with current code, a "pseudo u32 mask" is applied to a be32 ipaddr; it
> occurs to works for "common netmasks" (multiple of 8), not for
> "intermediate" mask (/15, /25)

Heh, back when Casey was first drafting this code I mentioned the same issue 
regarding byte ordering but Casey assured me that everything was correct.  I 
didn't have a Smack test system at the time so I couldn't verify the behavior.  
I'm glad you had a chance to test it, needless to say you should fix that when 
you submit your patch.

-- 
paul moore
linux @ hp

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