netdev - Re: [RFC PATCH v1 1/3] lsm: Relocate the IPv4 security_inet_conn

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Date:	Fri, 13 Mar 2009 11:54:58 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	paul.moore@...com
Cc:	linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
	netdev@...r.kernel.org
Subject: Re: [RFC PATCH v1 1/3] lsm: Relocate the IPv4
 security_inet_conn_request() hooks

From: Paul Moore <paul.moore@...com>
Date: Thu, 12 Mar 2009 12:22:57 -0400

> The current placement of the security_inet_conn_request() hooks do not allow
> individual LSMs to override the IP options of the connection's request_sock.
> This is a problem as both SELinux and Smack have the ability to use labeled
> networking protocols which make use of IP options to carry security attributes
> and the inability to set the IP options at the start of the TCP handshake is
> problematic.
> 
> This patch moves the IPv4 security_inet_conn_request() hooks past the code
> where the request_sock's IP options are set/reset so that the LSM can safely
> manipulate the IP options as needed.  This patch intentionally does not change
> the related IPv6 hooks as IPv6 based labeling protocols which use IPv6 options
> are not currently implemented, once they are we will have a better idea of
> the correct placement for the IPv6 hooks.

This looks OK to me:

Acked-by: David S. Miller <davem@...emloft.net>
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