projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0eeca283 RL |
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 */ | |
| 89204c40 | 38 | #define IN_MOVE_SELF 0x00000800 /* Self was moved */ |
| 0eeca283 RL |
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_ISDIR 0x40000000 /* event occurred against dir */ | |
| 51 | #define IN_ONESHOT 0x80000000 /* only send event once */ | |
| 52 | ||
| 53 | /* | |
| 54 | * All of the events - we build the list by hand so that we can add flags in | |
| 55 | * the future and not break backward compatibility. Apps will get only the | |
| 56 | * events that they originally wanted. Be sure to add new events here! | |
| 57 | */ | |
| 58 | #define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ | |
| 59 | IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \ | |
| 89204c40 JM |
60 | IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \ |
| 61 | IN_MOVE_SELF) | |
| 0eeca283 RL |
62 | |
| 63 | #ifdef __KERNEL__ | |
| 64 | ||
| 65 | #include <linux/dcache.h> | |
| 66 | #include <linux/fs.h> | |
| 67 | #include <linux/config.h> | |
| 68 | ||
| 69 | #ifdef CONFIG_INOTIFY | |
| 70 | ||
| 71 | extern void inotify_inode_queue_event(struct inode *, __u32, __u32, | |
| 72 | const char *); | |
| 73 | extern void inotify_dentry_parent_queue_event(struct dentry *, __u32, __u32, | |
| 74 | const char *); | |
| 75 | extern void inotify_unmount_inodes(struct list_head *); | |
| 76 | extern void inotify_inode_is_dead(struct inode *); | |
| 77 | extern u32 inotify_get_cookie(void); | |
| 78 | ||
| 79 | #else | |
| 80 | ||
| 81 | static inline void inotify_inode_queue_event(struct inode *inode, | |
| 82 | __u32 mask, __u32 cookie, | |
| 83 | const char *filename) | |
| 84 | { | |
| 85 | } | |
| 86 | ||
| 87 | static inline void inotify_dentry_parent_queue_event(struct dentry *dentry, | |
| 88 | __u32 mask, __u32 cookie, | |
| 89 | const char *filename) | |
| 90 | { | |
| 91 | } | |
| 92 | ||
| 93 | static inline void inotify_unmount_inodes(struct list_head *list) | |
| 94 | { | |
| 95 | } | |
| 96 | ||
| 97 | static inline void inotify_inode_is_dead(struct inode *inode) | |
| 98 | { | |
| 99 | } | |
| 100 | ||
| 101 | static inline u32 inotify_get_cookie(void) | |
| 102 | { | |
| 103 | return 0; | |
| 104 | } | |
| 105 | ||
| 106 | #endif /* CONFIG_INOTIFY */ | |
| 107 | ||
| 108 | #endif /* __KERNEL __ */ | |
| 109 | ||
| 110 | #endif /* _LINUX_INOTIFY_H */ |