[PATCH 0/3] Enable namespaced file capabilities

[Serge E. Hallyn]

Quoting Casey Schaufler (casey at schaufler-ca.com):
> On 6/23/2017 9:30 AM, Serge E. Hallyn wrote:
> > Quoting Casey Schaufler (casey at schaufler-ca.com):
> >> Or maybe just security.ns.capability, taking James' comment into account.
> > That last one may be suitable as an option, useful for his particular
> > (somewhat barbaric :) use case, but it's not ok for the general solution.
> 
> security.ns at uid=100.capability

I'm ok with this.  It gives protection from older kernels, and puts
the 'ns at uid=' at predictable locations for security and trusted.

> It makes the namespace part explicit and separate from
> the rest of the attribute name. It also generalizes for
> other attributes.
> 
> security.ns at uid=1000 at smack=WestOfOne.SMACK64

Looks good to me.

Do we want to say that '.' ends the attribute list?  That of
course means '.' cannot be in the attributes.  Perhaps end
with '@@' instead?  Just a thought.

What do others think?

thanks,
-serge
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