I'd also like to have something similar like Droid Wall for guarding the positioning information an app can get. I would like to whitelist certain applications

I'd also like to have something similar like Droid Wall for guarding the positioning information an app can get. I would like to whitelist certain applications who get accurate GPS and celltower positionig information. Others should get only obfuscated or no positioning information at all. Would that be possible for instance when enabling Mock locations? Or would this need some driver or kernel hacking?