[PATCH v2] xattr: Enable security.capability in user namespaces

[Serge E. Hallyn]

On Fri, Jul 14, 2017 at 03:26:14PM -0400, Mimi Zohar wrote:
> On Fri, 2017-07-14 at 13:17 -0500, Eric W. Biederman wrote:
> > Which brings us to the semantic question of would it be nice to have
> > stacked IMA/EVM on the same file.
> > 
> > I really don't think we do.  I think allowing multiple keys for
> > different part of trusting files is easy enough that we should have no
> > need to fight over which keys do which.
> 
> We definitely want to support different policies on the native and in
> the namespace with different keys and keyrings.

Ok, so Stefan's code to support userspace in a container reading
security.ima and getting back the value for security.ima at uid=1000
(if 1000 is the kuid of the container's root user) is in fact
useful to IMA?
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