Detecting rename target about fsnotify

[howeyc]

It's not that I don't want to have this functionality. I really would, but I see no way to provide it.

FreeBSD/OSX - You need to open a file descriptor to watch it. The kevent does not specify the location of the file at all.
Look at EVFILT_NODE section of man page: http://www.freebsd.org/cgi/man.cgi?query=kqueue&apropos=0&sektion=0&manpath=FreeBSD+9.0-RELEASE&arch=default&format=html

Linux - Events are received for the directory you watch, so if you are not watching the target directory, you will only get the event coming out of the directory you are watching.
Man page for reference: http://linux.die.net/man/7/inotify
Now, you can watch individual files, but as far as I know, you can't get the destination location after a rename.

Windows - I am less familiar with this one, but it appears all changes are based on the directory, not even watching individual files. So again, you need to watch the target directory.
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365465(v=vs.85).aspx

I am hesitant to expose the underlying inotify event, because it makes the API less-consistent across operating systems and also because I'm not sure you'd gain the functionality you seek anyway.

Now, it may be possible that I have misread the documents, or there is some other way of doing this that I have not thought of. If I have missed something that will provide the rename functionality, please let me know. I'd be more than happy to rectify the situation.