linux-kernel - Re: oprofile / selinux / security_port

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Message-ID: <Line.LNX.4.64.0703271005460.21437@d.namei>
Date:	Tue, 27 Mar 2007 10:12:17 -0400 (EDT)
From:	James Morris <jmorris@...ei.org>
To:	Sami Farin <safari-kernel@...ari.iki.fi>
cc:	Stephen Smalley <sds@...ho.nsa.gov>,
	linux-kernel Mailing List <linux-kernel@...r.kernel.org>,
	Eric Paris <eparis@...isplace.org>
Subject: Re: oprofile / selinux / security_port_sid

On Tue, 27 Mar 2007, Sami Farin wrote:

> On Tue, Mar 27, 2007 at 09:40:23 -0400, Stephen Smalley wrote:
> > On Tue, 2007-03-27 at 13:06 +0300, Sami Farin wrote:
> > > is there room for improvement in security_port_sid() ?
> > 
> > Yes, lots of room.  Also, it won't get called per-packet if you enable
> > secmark (echo 0 > /selinux/compat_net or boot with selinux_compat_net=0
> > or build with SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT), although that
> > may require updating your policy.
> 
> Hmm, test was done with
> CONFIG_NETWORK_SECMARK=y
> CONFIG_SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT=y
> and /selinux/compat_net = 0

Even with this setting, you'll be hitting security_port_sid() via 
connect(2) and bind(2).  We need to fix it.



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