linux-kernel - Re: [PATCH 1/2] net: Implement SO

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Message-ID: <CALCETrV7ZwWtCJQ2uF3WmctTj0qBkh2MRQS4uy9vPhP0zKPYrQ@mail.gmail.com>
Date:	Tue, 15 Apr 2014 14:54:02 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	cgroups@...r.kernel.org,
	Network Development <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>, Tejun Heo <tj@...nel.org>,
	Simo Sorce <ssorce@...hat.com>, lpoetter@...hat.com,
	kay@...hat.com, dwalsh@...hat.com
Subject: Re: [PATCH 1/2] net: Implement SO_PEERCGROUP

On Tue, Apr 15, 2014 at 2:15 PM, Vivek Goyal <vgoyal@...hat.com> wrote:
> Implement SO_PEERCGROUP along the lines of SO_PEERCRED. This returns the
> cgroup of first mounted hierarchy of the task. For the case of client,
> it represents the cgroup of client at the time of opening the connection.
> After that client cgroup might change.
>
> This works only for unix stream sockets.

I still don't understand why this is useful when SCM_CGROUP exists.

--Andy
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