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comparison: hal/gonk/fanotify.h
hal/gonk/fanotify.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:dd7471edfc1b |
|---|---|
| 1 #ifndef _LINUX_FANOTIFY_H | |
| 2 #define _LINUX_FANOTIFY_H | |
| 3 | |
| 4 /* This is a Linux header generated by "make headers_install" */ | |
| 5 | |
| 6 #include <linux/types.h> | |
| 7 | |
| 8 /* the following events that user-space can register for */ | |
| 9 #define FAN_ACCESS 0x00000001 /* File was accessed */ | |
| 10 #define FAN_MODIFY 0x00000002 /* File was modified */ | |
| 11 #define FAN_CLOSE_WRITE 0x00000008 /* Writtable file closed */ | |
| 12 #define FAN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */ | |
| 13 #define FAN_OPEN 0x00000020 /* File was opened */ | |
| 14 | |
| 15 #define FAN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */ | |
| 16 | |
| 17 #define FAN_OPEN_PERM 0x00010000 /* File open in perm check */ | |
| 18 #define FAN_ACCESS_PERM 0x00020000 /* File accessed in perm check */ | |
| 19 | |
| 20 #define FAN_ONDIR 0x40000000 /* event occurred against dir */ | |
| 21 | |
| 22 #define FAN_EVENT_ON_CHILD 0x08000000 /* interested in child events */ | |
| 23 | |
| 24 /* helper events */ | |
| 25 #define FAN_CLOSE (FAN_CLOSE_WRITE | FAN_CLOSE_NOWRITE) /* close */ | |
| 26 | |
| 27 /* flags used for fanotify_init() */ | |
| 28 #define FAN_CLOEXEC 0x00000001 | |
| 29 #define FAN_NONBLOCK 0x00000002 | |
| 30 | |
| 31 /* These are NOT bitwise flags. Both bits are used togther. */ | |
| 32 #define FAN_CLASS_NOTIF 0x00000000 | |
| 33 #define FAN_CLASS_CONTENT 0x00000004 | |
| 34 #define FAN_CLASS_PRE_CONTENT 0x00000008 | |
| 35 #define FAN_ALL_CLASS_BITS (FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | \ | |
| 36 FAN_CLASS_PRE_CONTENT) | |
| 37 | |
| 38 #define FAN_UNLIMITED_QUEUE 0x00000010 | |
| 39 #define FAN_UNLIMITED_MARKS 0x00000020 | |
| 40 | |
| 41 #define FAN_ALL_INIT_FLAGS (FAN_CLOEXEC | FAN_NONBLOCK | \ | |
| 42 FAN_ALL_CLASS_BITS | FAN_UNLIMITED_QUEUE |\ | |
| 43 FAN_UNLIMITED_MARKS) | |
| 44 | |
| 45 /* flags used for fanotify_modify_mark() */ | |
| 46 #define FAN_MARK_ADD 0x00000001 | |
| 47 #define FAN_MARK_REMOVE 0x00000002 | |
| 48 #define FAN_MARK_DONT_FOLLOW 0x00000004 | |
| 49 #define FAN_MARK_ONLYDIR 0x00000008 | |
| 50 #define FAN_MARK_MOUNT 0x00000010 | |
| 51 #define FAN_MARK_IGNORED_MASK 0x00000020 | |
| 52 #define FAN_MARK_IGNORED_SURV_MODIFY 0x00000040 | |
| 53 #define FAN_MARK_FLUSH 0x00000080 | |
| 54 | |
| 55 #define FAN_ALL_MARK_FLAGS (FAN_MARK_ADD |\ | |
| 56 FAN_MARK_REMOVE |\ | |
| 57 FAN_MARK_DONT_FOLLOW |\ | |
| 58 FAN_MARK_ONLYDIR |\ | |
| 59 FAN_MARK_MOUNT |\ | |
| 60 FAN_MARK_IGNORED_MASK |\ | |
| 61 FAN_MARK_IGNORED_SURV_MODIFY |\ | |
| 62 FAN_MARK_FLUSH) | |
| 63 | |
| 64 /* | |
| 65 * All of the events - we build the list by hand so that we can add flags in | |
| 66 * the future and not break backward compatibility. Apps will get only the | |
| 67 * events that they originally wanted. Be sure to add new events here! | |
| 68 */ | |
| 69 #define FAN_ALL_EVENTS (FAN_ACCESS |\ | |
| 70 FAN_MODIFY |\ | |
| 71 FAN_CLOSE |\ | |
| 72 FAN_OPEN) | |
| 73 | |
| 74 /* | |
| 75 * All events which require a permission response from userspace | |
| 76 */ | |
| 77 #define FAN_ALL_PERM_EVENTS (FAN_OPEN_PERM |\ | |
| 78 FAN_ACCESS_PERM) | |
| 79 | |
| 80 #define FAN_ALL_OUTGOING_EVENTS (FAN_ALL_EVENTS |\ | |
| 81 FAN_ALL_PERM_EVENTS |\ | |
| 82 FAN_Q_OVERFLOW) | |
| 83 | |
| 84 #define FANOTIFY_METADATA_VERSION 3 | |
| 85 | |
| 86 struct fanotify_event_metadata { | |
| 87 __u32 event_len; | |
| 88 __u8 vers; | |
| 89 __u8 reserved; | |
| 90 __u16 metadata_len; | |
| 91 __u64 mask; | |
| 92 __s32 fd; | |
| 93 __s32 pid; | |
| 94 }; | |
| 95 | |
| 96 struct fanotify_response { | |
| 97 __s32 fd; | |
| 98 __u32 response; | |
| 99 }; | |
| 100 | |
| 101 /* Legit userspace responses to a _PERM event */ | |
| 102 #define FAN_ALLOW 0x01 | |
| 103 #define FAN_DENY 0x02 | |
| 104 /* No fd set in event */ | |
| 105 #define FAN_NOFD -1 | |
| 106 | |
| 107 /* Helper functions to deal with fanotify_event_metadata buffers */ | |
| 108 #define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata)) | |
| 109 | |
| 110 #define FAN_EVENT_NEXT(meta, len) ((len) -= (meta)->event_len, \ | |
| 111 (struct fanotify_event_metadata*)(((char *)(meta)) + \ | |
| 112 (meta)->event_len)) | |
| 113 | |
| 114 #define FAN_EVENT_OK(meta, len) ((long)(len) >= (long)FAN_EVENT_METADATA_LEN && \ | |
| 115 (long)(meta)->event_len >= (long)FAN_EVENT_METADATA_LEN && \ | |
| 116 (long)(meta)->event_len <= (long)(len)) | |
| 117 | |
| 118 #endif /* _LINUX_FANOTIFY_H */ |
