[PATCH 1/1] RFC: taking a crack at targeted capabilities

Serge E. Hallyn serue at us.ibm.com
Wed Jan 6 13:57:21 PST 2010


Quoting Eric W. Biederman (ebiederm at xmission.com):
> "Serge E. Hallyn" <serue at us.ibm.com> writes:
> 
> >> - Introduce ns_capable to test for a capability in a non-default
> >>   user namespace.
> >> - Teach cap_capable to handle capabilities in a non-default
> >>   user namespace.
> >
> > So yeah, I didn't address the whole has_capability junk.  Feh.
> 
> That just fell out...
> 
> > So do you intend to tag all namespaces with the userns which
> > created it?  So sys_hostname() can check utsname->uts_ns->creator,
> > and net ioctl SIOCSIFNAME checks struct net->creator?
> 
> That is the plan.  Add a creator/usernamespace as part of the patches
> to support creating a new namespace without the global CAP_SYS_ADMIN.

Cool - are you working on that right now, or should I start it myself
if i'm bored and restless tonight?

-serge


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