Detecting new file name after receiving kevent's NOTE_RENAME

[Ivan Radovanovic]

What is the best practice for discovering new file name after receiving 
kevent(2) NOTE_RENAME on its descriptor?

At the moment I am storing fileno from dirent(5) structure together with 
descriptor and name, and when I receive NOTE_RENAME I re-read directory 
and use it (fileno) to discover new name, but this obviously requires 
re-reading entire directory on each NOTE_RENAME.

I am wondering is there some more clever way to get this new name 
(kernel is obviously aware of it, otherwise it couldn't notify 
descriptor about rename)?

Kind regards,
Ivan