From: Vivek Goyal <vgoyal@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
cgroups@vger.kernel.org,
Network Development <netdev@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Tejun Heo <tj@kernel.org>, Simo Sorce <ssorce@redhat.com>,
lpoetter@redhat.com, kay@redhat.com, dwalsh@redhat.com
Subject: Re: [PATCH 1/2] net: Implement SO_PEERCGROUP
Date: Tue, 15 Apr 2014 20:22:45 -0400 [thread overview]
Message-ID: <20140416002245.GB5035@redhat.com> (raw)
In-Reply-To: <CALCETrV7ZwWtCJQ2uF3WmctTj0qBkh2MRQS4uy9vPhP0zKPYrQ@mail.gmail.com>
On Tue, Apr 15, 2014 at 02:54:02PM -0700, Andy Lutomirski wrote:
> On Tue, Apr 15, 2014 at 2:15 PM, Vivek Goyal <vgoyal@redhat.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.
I think this is more lightweight as compared to SCM_CGROUP. Information
is stored per connection as opposed to per message.
So if user space has created a system where unpriviliged processed have
been locked in cgroups and they can't escape those cgroups, then
SO_PEERCRED should be sufficient and one does not have to use SCM_CGROUP.
Thanks
Vivek
next prev parent reply other threads:[~2014-04-16 0:22 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 21:15 [PATCH 0/2] net: Implement SO_PEERCGROUP and SO_PASSCGROUP socket options Vivek Goyal
2014-04-15 21:15 ` [PATCH 1/2] net: Implement SO_PEERCGROUP Vivek Goyal
2014-04-15 21:54 ` Andy Lutomirski
2014-04-16 0:22 ` Vivek Goyal [this message]
2014-04-15 21:15 ` [PATCH 2/2] net: Implement SO_PASSCGROUP to enable passing cgroup path Vivek Goyal
2014-04-15 21:53 ` Andy Lutomirski
2014-04-15 23:09 ` Simo Sorce
2014-04-16 0:20 ` Vivek Goyal
2014-04-16 1:05 ` David Miller
2014-04-16 3:47 ` Andy Lutomirski
2014-04-16 10:17 ` Vivek Goyal
2014-04-16 14:34 ` Andy Lutomirski
2014-04-16 15:10 ` Vivek Goyal
2014-04-16 12:57 ` David Miller
2014-04-16 14:37 ` Andy Lutomirski
2014-04-16 16:13 ` Simo Sorce
2014-04-16 16:21 ` Tejun Heo
2014-04-16 16:54 ` Simo Sorce
2014-04-16 16:31 ` Andy Lutomirski
2014-04-16 17:02 ` Simo Sorce
2014-04-16 17:29 ` Andy Lutomirski
2014-04-16 17:34 ` Simo Sorce
2014-04-16 17:53 ` Andy Lutomirski
2014-04-16 18:36 ` Vivek Goyal
2014-04-16 18:40 ` Andy Lutomirski
2014-04-16 18:51 ` Vivek Goyal
2014-04-16 18:59 ` Andy Lutomirski
2014-04-16 18:06 ` Vivek Goyal
2014-04-16 18:13 ` Andy Lutomirski
2014-04-16 18:25 ` Vivek Goyal
2014-04-16 18:35 ` Andy Lutomirski
2014-04-16 19:06 ` Vivek Goyal
2014-04-16 19:13 ` Andy Lutomirski
2014-04-16 19:39 ` Vivek Goyal
2014-04-16 20:24 ` Andy Lutomirski
2014-04-17 13:41 ` Vivek Goyal
2014-04-16 18:59 ` Vivek Goyal
2014-04-17 15:41 ` Daniel J Walsh
2014-04-17 16:04 ` Simo Sorce
2014-04-17 16:11 ` Andy Lutomirski
2014-04-17 16:24 ` Simo Sorce
2014-04-17 16:37 ` Andy Lutomirski
2014-04-17 16:48 ` Simo Sorce
2014-04-17 16:55 ` Andy Lutomirski
2014-04-17 17:12 ` Vivek Goyal
2014-04-17 17:26 ` Andy Lutomirski
2014-04-17 17:33 ` Simo Sorce
2014-04-17 17:35 ` Andy Lutomirski
2014-04-17 17:47 ` Simo Sorce
2014-04-17 18:05 ` Andy Lutomirski
2014-04-17 18:23 ` Simo Sorce
2014-04-17 18:33 ` Andy Lutomirski
2014-04-17 18:50 ` Vivek Goyal
2014-04-17 18:57 ` Vivek Goyal
2014-04-17 19:06 ` Andy Lutomirski
2014-04-17 19:15 ` Simo Sorce
2014-04-17 19:19 ` Andy Lutomirski
2014-04-17 19:10 ` Simo Sorce
2014-04-17 19:16 ` Vivek Goyal
2014-04-17 19:46 ` Andy Lutomirski
2014-04-21 15:03 ` Vivek Goyal
2014-04-21 15:47 ` Andy Lutomirski
2014-04-23 15:07 ` Vivek Goyal
2014-04-23 15:37 ` Andy Lutomirski
2014-04-23 16:01 ` Vivek Goyal
2014-04-17 19:23 ` Andy Lutomirski
2014-04-17 17:52 ` Simo Sorce
2014-04-17 18:04 ` Andy Lutomirski
2014-04-17 18:31 ` Simo Sorce
2014-04-17 16:38 ` Vivek Goyal
2014-04-17 16:05 ` Andy Lutomirski
2014-04-17 16:12 ` Vivek Goyal
2014-04-23 16:45 ` Vivek Goyal
2014-04-23 17:29 ` David Miller
2014-04-24 20:34 ` Vivek Goyal
2014-04-24 20:48 ` David Miller
2014-04-24 21:04 ` Vivek Goyal
2014-04-24 21:11 ` David Miller
2014-04-25 0:29 ` Simo Sorce
2014-04-22 20:05 ` [PATCH 0/2] net: Implement SO_PEERCGROUP and SO_PASSCGROUP socket options David Miller
2014-04-22 20:08 ` Andy Lutomirski
2014-04-22 20:29 ` David Miller
2014-04-22 20:31 ` Andy Lutomirski
2014-04-22 20:32 ` David Miller
2014-04-23 0:37 ` Andy Lutomirski
2014-04-23 19:05 ` Vivek Goyal
2014-04-23 20:53 ` Daniel J Walsh
2014-04-24 13:01 ` Vivek Goyal
2014-04-23 15:55 ` Vivek Goyal
2014-04-23 16:16 ` Vivek Goyal
2014-04-23 17:21 ` Andy Lutomirski
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