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List:       linux-api
Subject:    Re: [PATCH net-next] net: add an ioctl to get a socket network namespace
From:       David Miller <davem () davemloft ! net>
Date:       2016-10-31 14:58:08
Message-ID: 20161031.105808.1717498783593722519.davem () davemloft ! net
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From: Andrei Vagin <avagin@openvz.org>
Date: Mon, 24 Oct 2016 18:29:13 -0700

> From: Andrey Vagin <avagin@openvz.org>
> 
> Each socket operates in a network namespace where it has been created,
> so if we want to dump and restore a socket, we have to know its network
> namespace.
> 
> We have a socket_diag to get information about sockets, it doesn't
> report sockets which are not bound or connected.
> 
> This patch introduces a new socket ioctl, which is called SIOCGSKNS
> and used to get a file descriptor for a socket network namespace.
> 
> A task must have CAP_NET_ADMIN in a target network namespace to
> use this ioctl.
> 
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Eric W. Biederman <ebiederm@xmission.com>
> Signed-off-by: Andrei Vagin <avagin@openvz.org>

Applied.
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