From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Subject: Re: Device Namespaces
Date: Tue, 1 Oct 2013 18:27:45 +0100
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To: Janne Karhunen <janne.karhunen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, Linux Containers <containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>, Kay Sievers <kay.sievers-tD+1rO4QERM@public.gmane.org>, Stephane Graber <stgraber-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>, "Eric W. Biederman" <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>, lxc-devel <lxc-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>, mhw <mhw-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>, devel <devel-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
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On Tue, Oct 1, 2013 at 7:19 AM, Janne Karhunen <janne.karhunen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> On Thu, Sep 26, 2013 at 8:33 AM, Greg Kroah-Hartman
> <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org> wrote:
>
>>> - We can relay a call of /sbin/hotplug from outside of a container
>>>   to inside of a container based on policy.
>>>   (But no one uses /sbin/hotplug anymore).
>>
>> That's right, they should be listening to libudev events, so why can't
>> your daemon shuffle them off to the proper container, all in userspace?
>
> Which reminds me, one potential reason being..
> http://lists.linuxfoundation.org/pipermail/containers/2013-May/032591.html
>

Can't the daemon live outside the container and shuffle stuff in?
IOW, there seems to be little point in containerizing things if you're
just going to punch a privilege hole in the namespace.

FWIW, I think that the capability evolution rules are crap, but
changing them is a can of worms, and enough people seem to thing the
status quo is acceptable that this is unlikely to ever get fixed.

--Andy