linux-kernel - Re: [PATCH v2 3/3] net: make net namespace sysctls belong to container's owner

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Message-Id: <20160930.012127.347186046201932283.davem@davemloft.net>
Date:   Fri, 30 Sep 2016 01:21:27 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     dmitry.torokhov@...il.com
Cc:     viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, ebiederm@...ssion.com
Subject: Re: [PATCH v2 3/3] net: make net namespace sysctls belong to
 container's owner

From: Dmitry Torokhov <dmitry.torokhov@...il.com>
Date: Thu, 29 Sep 2016 08:46:05 -0700

> Hi David,
> 
> On Wed, Aug 10, 2016 at 2:36 PM, Dmitry Torokhov
> <dmitry.torokhov@...il.com> wrote:
>> If net namespace is attached to a user namespace let's make container's
>> root owner of sysctls affecting said network namespace instead of global
>> root.
>>
>> This also allows us to clean up net_ctl_permissions() because we do not
>> need to fudge permissions anymore for the container's owner since it now
>> owns the objects in question.
>>
>> Acked-by: "Eric W. Biederman" <ebiederm@...ssion.com>
>> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> 
> I was looking at linux-next today, and I noticed that, when you merged
> my patch, you basically reverted the following commit:
> 
> commit d6e0d306449bcb5fa3c80e7a3edf11d45abf9ae9
> Author: Tyler Hicks <tyhicks@...onical.com>
> Date:   Thu Jun 2 23:43:22 2016 -0500
> 
>     net: Use ns_capable_noaudit() when determining net sysctl permissions

Please send me a fixup patch for this, sorry.