netdev - Re: [PATCH net-next v2 3/5] sock_diag: allow to dump bpf filters

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Message-Id: <20130425.011636.238533615622671655.davem@davemloft.net>
Date:	Thu, 25 Apr 2013 01:16:36 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	nicolas.dichtel@...nd.com, netdev@...r.kernel.org,
	xiyou.wangcong@...il.com
Subject: Re: [PATCH net-next v2 3/5] sock_diag: allow to dump bpf filters

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 24 Apr 2013 09:22:45 -0700

> On Wed, 2013-04-24 at 17:52 +0200, Nicolas Dichtel wrote:
>> This patch allows to dump BPF filters attached to a socket with
>> SO_ATTACH_FILTER. In other words, users allowing to open netlink sockets can
>> see filters set on a socket (when the diag module of the socket family is
>> loaded).
> 
> To my knowledge, opening netlink sockets is not restricted.
> 
> I do not want user lambda being able to see my BPF filters.

I agree, this change is not reasonable.  And therefore the notifiers
added in the subsequent patches of this series are not appropriate
either.
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