1FAN_ACCESS 0x00000001
2FAN_MODIFY 0x00000002
3FAN_CLOSE_WRITE 0x00000008
4FAN_CLOSE_NOWRITE 0x00000010
5FAN_OPEN 0x00000020
6FAN_Q_OVERFLOW 0x00004000
7FAN_OPEN_PERM 0x00010000
8FAN_ACCESS_PERM 0x00020000
9FAN_ONDIR 0x40000000
10FAN_EVENT_ON_CHILD 0x08000000
11