Fanotify

Things that need to be fixed:

• Support non-root users
• Reliable vs. non-reliable delivery
• Subtree notification
• Allow users to get a wd instead of an fd if desired
• Include uid, not just pid
• Support directory events by passing an fd to the directory
• Add a flag to turn off event merging (or make merging less aggressive) so that events will happen "in order"?