netdev - Re: [PATCH for 2.6.33] conntrack: restrict runtime hashsize modifications

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Message-ID: <b6fcc0a1002050319p2ba0ff30y4bc8bdba08ff65d9@mail.gmail.com>
Date:	Fri, 5 Feb 2010 13:19:28 +0200
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	davem@...emloft.net, jonathan@...masters.org,
	eric.dumazet@...il.com, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org
Subject: Re: [PATCH for 2.6.33] conntrack: restrict runtime hashsize 
	modifications

On Fri, Feb 5, 2010 at 1:16 PM, Patrick McHardy <kaber@...sh.net> wrote:
> OK testing looks fine, although I'm quite surprised that its actually
> possible to change module parameters from within non-init namespaces.
> How is this supposed to work at all? I don't see how sysfs could
> possibly provide a network namespace context ...


You can do in write hook

    if (!net_eq(current->nsproxy->net_ns, &init_net))
            return -EINVAL;
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