| | 1 | /* |
| | 2 | * Inode based directory notification for Linux |
| | 3 | * |
| | 4 | * Copyright (C) 2005 John McCutchan |
| | 5 | */ |
| | 6 | |
| | 7 | #ifndef _LINUX_INOTIFY_H |
| | 8 | #define _LINUX_INOTIFY_H |
| | 9 | |
| | 10 | #include <linux/types.h> |
| | 11 | |
| | 12 | /* |
| | 13 | * struct inotify_event - structure read from the inotify device for each event |
| | 14 | * |
| | 15 | * When you are watching a directory, you will receive the filename for events |
| | 16 | * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd. |
| | 17 | */ |
| | 18 | struct inotify_event { |
| | 19 | __s32 wd; /* watch descriptor */ |
| | 20 | __u32 mask; /* watch mask */ |
| | 21 | __u32 cookie; /* cookie to synchronize two events */ |
| | 22 | __u32 len; /* length (including nulls) of name */ |
| | 23 | char name[0]; /* stub for possible name */ |
| | 24 | }; |
| | 25 | |
| | 26 | /* the following are legal, implemented events that user-space can watch for */ |
| | 27 | #define IN_ACCESS 0x00000001 /* File was accessed */ |
| | 28 | #define IN_MODIFY 0x00000002 /* File was modified */ |
| | 29 | #define IN_ATTRIB 0x00000004 /* Metadata changed */ |
| | 30 | #define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */ |
| | 31 | #define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */ |
| | 32 | #define IN_OPEN 0x00000020 /* File was opened */ |
| | 33 | #define IN_MOVED_FROM 0x00000040 /* File was moved from X */ |
| | 34 | #define IN_MOVED_TO 0x00000080 /* File was moved to Y */ |
| | 35 | #define IN_CREATE 0x00000100 /* Subfile was created */ |
| | 36 | #define IN_DELETE 0x00000200 /* Subfile was deleted */ |
| | 37 | #define IN_DELETE_SELF 0x00000400 /* Self was deleted */ |
| | 38 | #define IN_MOVE_SELF 0x00000800 /* Self was moved */ |
| | 39 | |
| | 40 | /* the following are legal events. they are sent as needed to any watch */ |
| | 41 | #define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */ |
| | 42 | #define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */ |
| | 43 | #define IN_IGNORED 0x00008000 /* File was ignored */ |
| | 44 | |
| | 45 | /* helper events */ |
| | 46 | #define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */ |
| | 47 | #define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */ |
| | 48 | |
| | 49 | /* special flags */ |
| | 50 | #define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */ |
| | 51 | #define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */ |
| | 52 | #define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */ |
| | 53 | #define IN_ISDIR 0x40000000 /* event occurred against dir */ |
| | 54 | #define IN_ONESHOT 0x80000000 /* only send event once */ |
| | 55 | |
| | 56 | /* |
| | 57 | * All of the events - we build the list by hand so that we can add flags in |
| | 58 | * the future and not break backward compatibility. Apps will get only the |
| | 59 | * events that they originally wanted. Be sure to add new events here! |
| | 60 | */ |
| | 61 | #define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ |
| | 62 | IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \ |
| | 63 | IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \ |
| | 64 | IN_MOVE_SELF) |
| | 65 | |
| | 66 | |
| | 67 | #endif /* _LINUX_INOTIFY_H */ |
