inotify.h
上传用户:szlgq88
上传日期:2009-04-28
资源大小:48287k
文件大小:3k
- /*
- * Inode based directory notification for Linux
- *
- * Copyright (C) 2005 John McCutchan
- */
- #ifndef _LINUX_INOTIFY_H
- #define _LINUX_INOTIFY_H
- #include <linux/types.h>
- /*
- * struct inotify_event - structure read from the inotify device for each event
- *
- * When you are watching a directory, you will receive the filename for events
- * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
- */
- struct inotify_event {
- __s32 wd; /* watch descriptor */
- __u32 mask; /* watch mask */
- __u32 cookie; /* cookie to synchronize two events */
- __u32 len; /* length (including nulls) of name */
- char name[0]; /* stub for possible name */
- };
- /* the following are legal, implemented events that user-space can watch for */
- #define IN_ACCESS 0x00000001 /* File was accessed */
- #define IN_MODIFY 0x00000002 /* File was modified */
- #define IN_ATTRIB 0x00000004 /* Metadata changed */
- #define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
- #define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
- #define IN_OPEN 0x00000020 /* File was opened */
- #define IN_MOVED_FROM 0x00000040 /* File was moved from X */
- #define IN_MOVED_TO 0x00000080 /* File was moved to Y */
- #define IN_CREATE 0x00000100 /* Subfile was created */
- #define IN_DELETE 0x00000200 /* Subfile was deleted */
- #define IN_DELETE_SELF 0x00000400 /* Self was deleted */
- #define IN_MOVE_SELF 0x00000800 /* Self was moved */
- /* the following are legal events. they are sent as needed to any watch */
- #define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
- #define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
- #define IN_IGNORED 0x00008000 /* File was ignored */
- /* helper events */
- #define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
- #define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
- /* special flags */
- #define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
- #define IN_ISDIR 0x40000000 /* event occurred against dir */
- #define IN_ONESHOT 0x80000000 /* only send event once */
- /*
- * All of the events - we build the list by hand so that we can add flags in
- * the future and not break backward compatibility. Apps will get only the
- * events that they originally wanted. Be sure to add new events here!
- */
- #define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE |
- IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM |
- IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF |
- IN_MOVE_SELF)
- #ifdef __KERNEL__
- #include <linux/dcache.h>
- #include <linux/fs.h>
- #include <linux/config.h>
- #ifdef CONFIG_INOTIFY
- extern void inotify_inode_queue_event(struct inode *, __u32, __u32,
- const char *);
- extern void inotify_dentry_parent_queue_event(struct dentry *, __u32, __u32,
- const char *);
- extern void inotify_unmount_inodes(struct list_head *);
- extern void inotify_inode_is_dead(struct inode *);
- extern u32 inotify_get_cookie(void);
- #else
- static inline void inotify_inode_queue_event(struct inode *inode,
- __u32 mask, __u32 cookie,
- const char *filename)
- {
- }
- static inline void inotify_dentry_parent_queue_event(struct dentry *dentry,
- __u32 mask, __u32 cookie,
- const char *filename)
- {
- }
- static inline void inotify_unmount_inodes(struct list_head *list)
- {
- }
- static inline void inotify_inode_is_dead(struct inode *inode)
- {
- }
- static inline u32 inotify_get_cookie(void)
- {
- return 0;
- }
- #endif /* CONFIG_INOTIFY */
- #endif /* __KERNEL __ */
- #endif /* _LINUX_INOTIFY_H */