On 04/05/2011 09:23 PM, Cyril Brulebois wrote:
Hi LXC folks,

from my bug report against udev, so that it doesn't try to start when
running in a non-root container:

Marco d'Itri<m...@linux.it>  (05/04/2011):
On Apr 05, Cyril Brulebois<k...@debian.org>  wrote:

from a quick glance, it looks like running udev in a linux
container isn't supported, so I guess it might make sense to use a
check similar to is_chrooted in its postinst to decide whether to
start the daemon.
No objections, but please come back with a detection method which is
sanctioned by the LXC people.
Could you please advise on the best way to detect running in a
non-root container? It looks like grepping /proc/1/cgroup for :/$
could be a way to determine that (as opposed to :/foo$ in a "foo"
container). Can you please confirm?

I would not rely on that because lxc may evolve to not use the cgroup if not present.

If you use upstart, you can check the 'container=lxc' env variable in the udev init script in order to know if you are in a container. Otherwise for sysvrc init, I don't know how to handle that.

Thanks
  -- Daniel



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