Re: Fw: [PATCH 1/1] file capabilities: simplify signal check

[serge@hallyn.com]

Quoting Eric W. Biederman (ebiederm@xmission.com):
> serge@hallyn.com writes:
> 
> > Quoting Eric W. Biederman (ebiederm@xmission.com):
> >> Andrew Morton <akpm@linux-foundation.org> writes:
> >> 
> >> > um, is that code namespace-clean?
> >> 
> >> Choke, gag.
> >
> > Oh, sorry, I got lost in the set of patches in the message.  To be
> > clear, my little 4-patch uid-ns-signal patchset can simply be updated
> > to make the cap_task_kill() uid check into if (task_user_equiv(current, p)
> >
> > But Eric if you simply drop cap_task_kill() (don't make it return 0,
> > just drop the function and go back to not setting task_kill in the
> > capability_security_ops) I'll ack that.  Else I'll write the patch
> > thursday.  At this point the only thing that will be denied by
> > cap_task_kill() but not by check_kill_permission() is funky euid cases.
> > That's wrong.  (cc'ing amorgan in the event I'm forgetting something
> > useful the fn is doing)
> 
> Go ahead.   I'm fighting a cold and am fairly overloaded at the moment.
> 
> Eric

Thanks - patch sent a little while ago.  The description explains why
I believe cap_task_kill() became worthless (not just 'it's inconvenient' :)

-serge