[RFC PATCH 1/2] devices cgroup: allow can_attach() if ns_capable

Serge Hallyn serge.hallyn at ubuntu.com
Tue Jul 23 18:38:41 UTC 2013


Quoting Tejun Heo (tj at kernel.org):
> On Tue, Jul 23, 2013 at 01:16:06PM -0500, Serge Hallyn wrote:
> > We allow a task to change its own devices cgroup, or to change other tasks'
> > cgroups if it has CAP_SYS_ADMIN.
> > 
> > Also allow task A to change task B's cgroup if task A has CAP_SYS_ADMIN
> > with respect to task B - meaning A is root in the same userns, or A
> > created B's userns.
> 
> As discussed multpile times, cgroup isn't gonna support delegating
> cgroup management directly into containers, so this doesn't really
> jive with where we're heading.

This doesn't delegate it into the container.  It allows me, on the host,
to set the cgroup for a container.

thanks,
-serge


More information about the Containers mailing list