Re: [PATCH 2/2] net: Implement SO_PEERCGROUP

From: Andy Lutomirski
Date: Wed Mar 12 2014 - 21:22:05 EST


On Wed, Mar 12, 2014 at 6:17 PM, Simo Sorce <ssorce@xxxxxxxxxx> wrote:
> On Wed, 2014-03-12 at 14:19 -0700, Andy Lutomirski wrote:
>> On Wed, Mar 12, 2014 at 2:16 PM, Simo Sorce <ssorce@xxxxxxxxxx> wrote:
>>
>> >
>> > Connection time is all we do and can care about.
>>
>> You have not answered why.
>
> We are going to disclose information to the peer based on policy that
> depends on the cgroup the peer is part of. All we care for is who opened
> the connection, if the peer wants to pass on that information after it
> has obtained it there is nothing we can do, so connection time is all we
> really care about.

Can you give a realistic example?

I could say that I'd like to disclose information to processes based
on their rlimits at the time they connected, but I don't think that
would carry much weight.

--Andy
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