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Eric Parisff0b16a2009-12-17 21:24:25 -05001#ifndef _LINUX_FANOTIFY_H
2#define _LINUX_FANOTIFY_H
3
4#include <linux/types.h>
5
6/* the following events that user-space can register for */
7#define FAN_ACCESS 0x00000001 /* File was accessed */
8#define FAN_MODIFY 0x00000002 /* File was modified */
9#define FAN_CLOSE_WRITE 0x00000008 /* Unwrittable file closed */
10#define FAN_CLOSE_NOWRITE 0x00000010 /* Writtable file closed */
11#define FAN_OPEN 0x00000020 /* File was opened */
12
13#define FAN_EVENT_ON_CHILD 0x08000000 /* interested in child events */
14
15/* FIXME currently Q's have no limit.... */
16#define FAN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
17
18/* helper events */
19#define FAN_CLOSE (FAN_CLOSE_WRITE | FAN_CLOSE_NOWRITE) /* close */
20
Eric Paris2a3edf82009-12-17 21:24:26 -050021/* flags used for fanotify_init() */
Eric Paris52c923d2009-12-17 21:24:26 -050022#define FAN_CLOEXEC 0x00000001
23#define FAN_NONBLOCK 0x00000002
24
25#define FAN_ALL_INIT_FLAGS (FAN_CLOEXEC | FAN_NONBLOCK)
Eric Paris2a3edf82009-12-17 21:24:26 -050026
27/* flags used for fanotify_modify_mark() */
28#define FAN_MARK_ADD 0x00000001
29#define FAN_MARK_REMOVE 0x00000002
30#define FAN_MARK_DONT_FOLLOW 0x00000004
31#define FAN_MARK_ONLYDIR 0x00000008
Andreas Gruenbachereac8e9e2009-12-17 21:24:29 -050032#define FAN_MARK_MOUNT 0x00000010
Eric Parisb9e4e3b2009-12-17 21:24:33 -050033#define FAN_MARK_IGNORED_MASK 0x00000020
Eric Parisc9778a92009-12-17 21:24:33 -050034#define FAN_MARK_IGNORED_SURV_MODIFY 0x00000040
Eric Paris2a3edf82009-12-17 21:24:26 -050035
36#define FAN_ALL_MARK_FLAGS (FAN_MARK_ADD |\
37 FAN_MARK_REMOVE |\
38 FAN_MARK_DONT_FOLLOW |\
Eric Paris0ff21db2009-12-17 21:24:29 -050039 FAN_MARK_ONLYDIR |\
Eric Parisb9e4e3b2009-12-17 21:24:33 -050040 FAN_MARK_MOUNT |\
Eric Parisc9778a92009-12-17 21:24:33 -050041 FAN_MARK_IGNORED_MASK |\
42 FAN_MARK_IGNORED_SURV_MODIFY)
Eric Paris2a3edf82009-12-17 21:24:26 -050043
Eric Parisff0b16a2009-12-17 21:24:25 -050044/*
45 * All of the events - we build the list by hand so that we can add flags in
46 * the future and not break backward compatibility. Apps will get only the
47 * events that they originally wanted. Be sure to add new events here!
48 */
49#define FAN_ALL_EVENTS (FAN_ACCESS |\
50 FAN_MODIFY |\
51 FAN_CLOSE |\
52 FAN_OPEN)
53
Eric Parisa1014f12009-12-17 21:24:26 -050054#define FAN_ALL_OUTGOING_EVENTS (FAN_ALL_EVENTS |\
55 FAN_Q_OVERFLOW)
56
57#define FANOTIFY_METADATA_VERSION 1
58
59struct fanotify_event_metadata {
60 __u32 event_len;
61 __u32 vers;
62 __s32 fd;
63 __u64 mask;
Andreas Gruenbacher32c32632009-12-17 21:24:27 -050064 __s64 pid;
Eric Parisa1014f12009-12-17 21:24:26 -050065} __attribute__ ((packed));
66
67/* Helper functions to deal with fanotify_event_metadata buffers */
68#define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))
69
70#define FAN_EVENT_NEXT(meta, len) ((len) -= (meta)->event_len, \
71 (struct fanotify_event_metadata*)(((char *)(meta)) + \
72 (meta)->event_len))
73
74#define FAN_EVENT_OK(meta, len) ((long)(len) >= (long)FAN_EVENT_METADATA_LEN && \
75 (long)(meta)->event_len >= (long)FAN_EVENT_METADATA_LEN && \
76 (long)(meta)->event_len <= (long)(len))
77
Eric Parisff0b16a2009-12-17 21:24:25 -050078#ifdef __KERNEL__
79
80#endif /* __KERNEL__ */
81#endif /* _LINUX_FANOTIFY_H */