1FAN_MARK_ADD 0x00000001 2FAN_MARK_REMOVE 0x00000002 3FAN_MARK_DONT_FOLLOW 0x00000004 4FAN_MARK_ONLYDIR 0x00000008 5FAN_MARK_MOUNT 0x00000010 6FAN_MARK_IGNORED_MASK 0x00000020 7FAN_MARK_IGNORED_SURV_MODIFY 0x00000040 8FAN_MARK_FLUSH 0x00000080 9