1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/hal/gonk/fanotify.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,118 @@
1.4 +#ifndef _LINUX_FANOTIFY_H
1.5 +#define _LINUX_FANOTIFY_H
1.6 +
1.7 +/* This is a Linux header generated by "make headers_install" */
1.8 +
1.9 +#include <linux/types.h>
1.10 +
1.11 +/* the following events that user-space can register for */
1.12 +#define FAN_ACCESS 0x00000001 /* File was accessed */
1.13 +#define FAN_MODIFY 0x00000002 /* File was modified */
1.14 +#define FAN_CLOSE_WRITE 0x00000008 /* Writtable file closed */
1.15 +#define FAN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
1.16 +#define FAN_OPEN 0x00000020 /* File was opened */
1.17 +
1.18 +#define FAN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
1.19 +
1.20 +#define FAN_OPEN_PERM 0x00010000 /* File open in perm check */
1.21 +#define FAN_ACCESS_PERM 0x00020000 /* File accessed in perm check */
1.22 +
1.23 +#define FAN_ONDIR 0x40000000 /* event occurred against dir */
1.24 +
1.25 +#define FAN_EVENT_ON_CHILD 0x08000000 /* interested in child events */
1.26 +
1.27 +/* helper events */
1.28 +#define FAN_CLOSE (FAN_CLOSE_WRITE | FAN_CLOSE_NOWRITE) /* close */
1.29 +
1.30 +/* flags used for fanotify_init() */
1.31 +#define FAN_CLOEXEC 0x00000001
1.32 +#define FAN_NONBLOCK 0x00000002
1.33 +
1.34 +/* These are NOT bitwise flags. Both bits are used togther. */
1.35 +#define FAN_CLASS_NOTIF 0x00000000
1.36 +#define FAN_CLASS_CONTENT 0x00000004
1.37 +#define FAN_CLASS_PRE_CONTENT 0x00000008
1.38 +#define FAN_ALL_CLASS_BITS (FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | \
1.39 + FAN_CLASS_PRE_CONTENT)
1.40 +
1.41 +#define FAN_UNLIMITED_QUEUE 0x00000010
1.42 +#define FAN_UNLIMITED_MARKS 0x00000020
1.43 +
1.44 +#define FAN_ALL_INIT_FLAGS (FAN_CLOEXEC | FAN_NONBLOCK | \
1.45 + FAN_ALL_CLASS_BITS | FAN_UNLIMITED_QUEUE |\
1.46 + FAN_UNLIMITED_MARKS)
1.47 +
1.48 +/* flags used for fanotify_modify_mark() */
1.49 +#define FAN_MARK_ADD 0x00000001
1.50 +#define FAN_MARK_REMOVE 0x00000002
1.51 +#define FAN_MARK_DONT_FOLLOW 0x00000004
1.52 +#define FAN_MARK_ONLYDIR 0x00000008
1.53 +#define FAN_MARK_MOUNT 0x00000010
1.54 +#define FAN_MARK_IGNORED_MASK 0x00000020
1.55 +#define FAN_MARK_IGNORED_SURV_MODIFY 0x00000040
1.56 +#define FAN_MARK_FLUSH 0x00000080
1.57 +
1.58 +#define FAN_ALL_MARK_FLAGS (FAN_MARK_ADD |\
1.59 + FAN_MARK_REMOVE |\
1.60 + FAN_MARK_DONT_FOLLOW |\
1.61 + FAN_MARK_ONLYDIR |\
1.62 + FAN_MARK_MOUNT |\
1.63 + FAN_MARK_IGNORED_MASK |\
1.64 + FAN_MARK_IGNORED_SURV_MODIFY |\
1.65 + FAN_MARK_FLUSH)
1.66 +
1.67 +/*
1.68 + * All of the events - we build the list by hand so that we can add flags in
1.69 + * the future and not break backward compatibility. Apps will get only the
1.70 + * events that they originally wanted. Be sure to add new events here!
1.71 + */
1.72 +#define FAN_ALL_EVENTS (FAN_ACCESS |\
1.73 + FAN_MODIFY |\
1.74 + FAN_CLOSE |\
1.75 + FAN_OPEN)
1.76 +
1.77 +/*
1.78 + * All events which require a permission response from userspace
1.79 + */
1.80 +#define FAN_ALL_PERM_EVENTS (FAN_OPEN_PERM |\
1.81 + FAN_ACCESS_PERM)
1.82 +
1.83 +#define FAN_ALL_OUTGOING_EVENTS (FAN_ALL_EVENTS |\
1.84 + FAN_ALL_PERM_EVENTS |\
1.85 + FAN_Q_OVERFLOW)
1.86 +
1.87 +#define FANOTIFY_METADATA_VERSION 3
1.88 +
1.89 +struct fanotify_event_metadata {
1.90 + __u32 event_len;
1.91 + __u8 vers;
1.92 + __u8 reserved;
1.93 + __u16 metadata_len;
1.94 + __u64 mask;
1.95 + __s32 fd;
1.96 + __s32 pid;
1.97 +};
1.98 +
1.99 +struct fanotify_response {
1.100 + __s32 fd;
1.101 + __u32 response;
1.102 +};
1.103 +
1.104 +/* Legit userspace responses to a _PERM event */
1.105 +#define FAN_ALLOW 0x01
1.106 +#define FAN_DENY 0x02
1.107 +/* No fd set in event */
1.108 +#define FAN_NOFD -1
1.109 +
1.110 +/* Helper functions to deal with fanotify_event_metadata buffers */
1.111 +#define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))
1.112 +
1.113 +#define FAN_EVENT_NEXT(meta, len) ((len) -= (meta)->event_len, \
1.114 + (struct fanotify_event_metadata*)(((char *)(meta)) + \
1.115 + (meta)->event_len))
1.116 +
1.117 +#define FAN_EVENT_OK(meta, len) ((long)(len) >= (long)FAN_EVENT_METADATA_LEN && \
1.118 + (long)(meta)->event_len >= (long)FAN_EVENT_METADATA_LEN && \
1.119 + (long)(meta)->event_len <= (long)(len))
1.120 +
1.121 +#endif /* _LINUX_FANOTIFY_H */
