Re: [RFC][PATCH] selinux: Introduce a policy capability and permission for NNP transitions

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On Wed, 2017-07-12 at 20:27 -0400, Chris PeBenito wrote:
> On 07/12/2017 05:38 PM, Paul Moore wrote:
> > On Wed, Jul 12, 2017 at 9:26 AM, Stephen Smalley <sds@xxxxxxxxxxxxx
> > > wrote:
> > > On Tue, 2017-07-11 at 17:00 -0400, Paul Moore wrote:
> > > > On Mon, Jul 10, 2017 at 4:25 PM, Stephen Smalley <sds@xxxxxxxxx
> > > > .gov>
> > > > wrote:
> > While I think splitting the NNP/nosuid transition restrictions
> > might
> > be a good idea under the new policy capability, I'm not sure it is
> > worth the cost of a "process2" object class.
> > 
> > With that in mind, let's do two things with this patch:
> > 
> > * Mention the nosuid restrictions in the patch description.  It
> > doesn't need much text, but something would be good so we have
> > documentation in the git log.
> > 
> > * Let's pick a new permission name that is not specific to NNP or
> > nosuid.  IMHO, nnpnosuid_transition is ... less than good.
> > Unfortunately, I'm not sure I'm much better at picking names; how
> > about "protected_transition"?  "restricted_transition"?
> > "enable_transition"?  "override_transition"?
> 
> I vote for nnp_transition anyway.  "No New Privileges" encompasses 
> nosuid in my mind.  If the two perms had been separated I would have 
> been inclined to allow both every time one of them was needed, to
> make 
> sure no one was surprised by the behavior difference.

I agree; I'll keep it as nnp_transition and just document it in the
patch description.




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