#ifndef _UAPI_LINUX_FANOTIFY_H#define _UAPI_LINUX_FANOTIFY_H #include <linux/types.h> /* the following events that user-space can register for */#define FAN_ACCESS		0x00000001	/* File was accessed */#define FAN_MODIFY		0x00000002	/* File was modified */#define FAN_CLOSE_WRITE		0x00000008	/* Writtable file closed */#define FAN_CLOSE_NOWRITE	0x00000010	/* Unwrittable file closed */#define FAN_OPEN		0x00000020	/* File was opened */ #define FAN_Q_OVERFLOW		0x00004000	/* Event queued overflowed */ #define FAN_OPEN_PERM		0x00010000	/* File open in perm check */#define FAN_ACCESS_PERM		0x00020000	/* File accessed in perm check */ #define FAN_ONDIR		0x40000000	/* event occurred against dir */ #define FAN_EVENT_ON_CHILD	0x08000000	/* interested in child events */ /* helper events */#define FAN_CLOSE		(FAN_CLOSE_WRITE | FAN_CLOSE_NOWRITE) /* close */ /* flags used for fanotify_init() */#define FAN_CLOEXEC		0x00000001#define FAN_NONBLOCK		0x00000002 /* These are NOT bitwise flags.  Both bits are used togther.  */#define FAN_CLASS_NOTIF		0x00000000#define FAN_CLASS_CONTENT	0x00000004#define FAN_CLASS_PRE_CONTENT	0x00000008#define FAN_ALL_CLASS_BITS	(FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | \				 FAN_CLASS_PRE_CONTENT) #define FAN_UNLIMITED_QUEUE	0x00000010#define FAN_UNLIMITED_MARKS	0x00000020 #define FAN_ALL_INIT_FLAGS	(FAN_CLOEXEC | FAN_NONBLOCK | \				 FAN_ALL_CLASS_BITS | FAN_UNLIMITED_QUEUE |\				 FAN_UNLIMITED_MARKS) /* flags used for fanotify_modify_mark() */#define FAN_MARK_ADD		0x00000001#define FAN_MARK_REMOVE		0x00000002#define FAN_MARK_DONT_FOLLOW	0x00000004#define FAN_MARK_ONLYDIR	0x00000008#define FAN_MARK_MOUNT		0x00000010#define FAN_MARK_IGNORED_MASK	0x00000020#define FAN_MARK_IGNORED_SURV_MODIFY	0x00000040#define FAN_MARK_FLUSH		0x00000080 #define FAN_ALL_MARK_FLAGS	(FAN_MARK_ADD |\				 FAN_MARK_REMOVE |\				 FAN_MARK_DONT_FOLLOW |\				 FAN_MARK_ONLYDIR |\				 FAN_MARK_MOUNT |\				 FAN_MARK_IGNORED_MASK |\				 FAN_MARK_IGNORED_SURV_MODIFY |\				 FAN_MARK_FLUSH) /* * All of the events - we build the list by hand so that we can add flags in * the future and not break backward compatibility.  Apps will get only the * events that they originally wanted.  Be sure to add new events here! */#define FAN_ALL_EVENTS (FAN_ACCESS |\			FAN_MODIFY |\			FAN_CLOSE |\			FAN_OPEN) /* * All events which require a permission response from userspace */#define FAN_ALL_PERM_EVENTS (FAN_OPEN_PERM |\			     FAN_ACCESS_PERM) #define FAN_ALL_OUTGOING_EVENTS	(FAN_ALL_EVENTS |\				 FAN_ALL_PERM_EVENTS |\				 FAN_Q_OVERFLOW) #define FANOTIFY_METADATA_VERSION	3 struct fanotify_event_metadata {	__u32 event_len;	__u8 vers;	__u8 reserved;	__u16 metadata_len;	__aligned_u64 mask;	__s32 fd;	__s32 pid;}; struct fanotify_response {	__s32 fd;	__u32 response;}; /* Legit userspace responses to a _PERM event */#define FAN_ALLOW	0x01#define FAN_DENY	0x02/* No fd set in event */#define FAN_NOFD	-1 /* Helper functions to deal with fanotify_event_metadata buffers */#define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata)) #define FAN_EVENT_NEXT(meta, len) ((len) -= (meta)->event_len, \				   (struct fanotify_event_metadata*)(((char *)(meta)) + \				   (meta)->event_len)) #define FAN_EVENT_OK(meta, len)	((long)(len) >= (long)FAN_EVENT_METADATA_LEN && \				(long)(meta)->event_len >= (long)FAN_EVENT_METADATA_LEN && \				(long)(meta)->event_len <= (long)(len)) #endif /* _UAPI_LINUX_FANOTIFY_H */