[enriquto]

But you are not really root, after that, you only think that you are.

[f-]

Does objective reality exist, my friend?

[monocasa]

I mean, in this case other calls will fail with EACCESS, so here, yes.

And I've done a similar thing for an integration test framework for low level daemons, so I know very well how much of a pain it is to get close to emulating "oh yeah, you're totally root" to processes via LD_PRELOAD.