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1da177e4 LT |
1 | #ifndef _LINUX_DNOTIFY_H |
2 | #define _LINUX_DNOTIFY_H | |
3 | /* | |
4 | * Directory notification for Linux | |
5 | * | |
6 | * Copyright (C) 2000,2002 Stephen Rothwell | |
7 | */ | |
8 | ||
9 | #include <linux/fs.h> | |
10 | ||
11 | struct dnotify_struct { | |
12 | struct dnotify_struct * dn_next; | |
13 | unsigned long dn_mask; | |
14 | int dn_fd; | |
15 | struct file * dn_filp; | |
16 | fl_owner_t dn_owner; | |
17 | }; | |
18 | ||
19 | #ifdef __KERNEL__ | |
20 | ||
1da177e4 LT |
21 | |
22 | #ifdef CONFIG_DNOTIFY | |
23 | ||
24 | extern void __inode_dir_notify(struct inode *, unsigned long); | |
25 | extern void dnotify_flush(struct file *, fl_owner_t); | |
26 | extern int fcntl_dirnotify(int, struct file *, unsigned long); | |
27 | extern void dnotify_parent(struct dentry *, unsigned long); | |
28 | ||
29 | static inline void inode_dir_notify(struct inode *inode, unsigned long event) | |
30 | { | |
31 | if (inode->i_dnotify_mask & (event)) | |
32 | __inode_dir_notify(inode, event); | |
33 | } | |
34 | ||
35 | #else | |
36 | ||
37 | static inline void __inode_dir_notify(struct inode *inode, unsigned long event) | |
38 | { | |
39 | } | |
40 | ||
41 | static inline void dnotify_flush(struct file *filp, fl_owner_t id) | |
42 | { | |
43 | } | |
44 | ||
45 | static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg) | |
46 | { | |
47 | return -EINVAL; | |
48 | } | |
49 | ||
50 | static inline void dnotify_parent(struct dentry *dentry, unsigned long event) | |
51 | { | |
52 | } | |
53 | ||
54 | static inline void inode_dir_notify(struct inode *inode, unsigned long event) | |
55 | { | |
56 | } | |
57 | ||
58 | #endif /* CONFIG_DNOTIFY */ | |
59 | ||
60 | #endif /* __KERNEL __ */ | |
61 | ||
62 | #endif /* _LINUX_DNOTIFY_H */ |