2 * Inode based directory notification for Linux
4 * Copyright (C) 2005 John McCutchan
7 #ifndef _LINUX_INOTIFY_H
8 #define _LINUX_INOTIFY_H
10 /* For O_CLOEXEC and O_NONBLOCK */
11 #include <linux/fcntl.h>
12 #include <linux/types.h>
15 * struct inotify_event - structure read from the inotify device for each event
17 * When you are watching a directory, you will receive the filename for events
18 * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
20 struct inotify_event {
21 __s32 wd; /* watch descriptor */
22 __u32 mask; /* watch mask */
23 __u32 cookie; /* cookie to synchronize two events */
24 __u32 len; /* length (including nulls) of name */
25 char name[0]; /* stub for possible name */
28 /* the following are legal, implemented events that user-space can watch for */
29 #define IN_ACCESS 0x00000001 /* File was accessed */
30 #define IN_MODIFY 0x00000002 /* File was modified */
31 #define IN_ATTRIB 0x00000004 /* Metadata changed */
32 #define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
33 #define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
34 #define IN_OPEN 0x00000020 /* File was opened */
35 #define IN_MOVED_FROM 0x00000040 /* File was moved from X */
36 #define IN_MOVED_TO 0x00000080 /* File was moved to Y */
37 #define IN_CREATE 0x00000100 /* Subfile was created */
38 #define IN_DELETE 0x00000200 /* Subfile was deleted */
39 #define IN_DELETE_SELF 0x00000400 /* Self was deleted */
40 #define IN_MOVE_SELF 0x00000800 /* Self was moved */
42 /* the following are legal events. they are sent as needed to any watch */
43 #define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
44 #define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
45 #define IN_IGNORED 0x00008000 /* File was ignored */
48 #define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
49 #define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
52 #define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
53 #define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
54 #define IN_EXCL_UNLINK 0x04000000 /* exclude events on unlinked objects */
55 #define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
56 #define IN_ISDIR 0x40000000 /* event occurred against dir */
57 #define IN_ONESHOT 0x80000000 /* only send event once */
60 * All of the events - we build the list by hand so that we can add flags in
61 * the future and not break backward compatibility. Apps will get only the
62 * events that they originally wanted. Be sure to add new events here!
64 #define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
65 IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
66 IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
69 /* Flags for sys_inotify_init1. */
70 #define IN_CLOEXEC O_CLOEXEC
71 #define IN_NONBLOCK O_NONBLOCK
74 #endif /* _LINUX_INOTIFY_H */