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01: /*
02:  * Inode based directory notification for Linux
03:  *
04:  * Copyright (C) 2005 John McCutchan
05:  */
06: 
07: #ifndef _LINUX_INOTIFY_H
08: #define _LINUX_INOTIFY_H
09: 
10: /* For O_CLOEXEC and O_NONBLOCK */
11: #include <linux/fcntl.h>
12: #include <linux/types.h>
13: 
14: /*
15:  * struct inotify_event - structure read from the inotify device for each event
16:  *
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.
19:  */
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 */
26: };
27: 
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 */
41: 
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 */
46: 
47: /* helper events */
48: #define IN_CLOSE                (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
49: #define IN_MOVE                 (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
50: 
51: /* special flags */
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 */
58: 
59: /*
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!
63:  */
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 | \
67:                          IN_MOVE_SELF)
68: 
69: /* Flags for sys_inotify_init1.  */
70: #define IN_CLOEXEC O_CLOEXEC
71: #define IN_NONBLOCK O_NONBLOCK
72: 
73: 
74: #endif  /* _LINUX_INOTIFY_H */
75: 

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