On Thu, Jul 12, 2018 at 1:34 PM Linus Torvalds
> This is the whole "write() is only for data". If you ever have
> credentials mattering at write time, you're doing something wrong.
> Really really.
> Don't do it.
.. and I'd like to repeat: we *have* done things wrong. But that's
simply not an excuse. We've done it wrong in SCSI, we've done it wrong
in various /proc files, we've done it wrong in many places.
But let's not do it wrong AGAIN.