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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 | ||
21 | #include <linux/config.h> | |
22 | ||
23 | #ifdef CONFIG_DNOTIFY | |
24 | ||
25 | extern void __inode_dir_notify(struct inode *, unsigned long); | |
26 | extern void dnotify_flush(struct file *, fl_owner_t); | |
27 | extern int fcntl_dirnotify(int, struct file *, unsigned long); | |
28 | extern void dnotify_parent(struct dentry *, unsigned long); | |
29 | ||
30 | static inline void inode_dir_notify(struct inode *inode, unsigned long event) | |
31 | { | |
32 | if (inode->i_dnotify_mask & (event)) | |
33 | __inode_dir_notify(inode, event); | |
34 | } | |
35 | ||
36 | #else | |
37 | ||
38 | static inline void __inode_dir_notify(struct inode *inode, unsigned long event) | |
39 | { | |
40 | } | |
41 | ||
42 | static inline void dnotify_flush(struct file *filp, fl_owner_t id) | |
43 | { | |
44 | } | |
45 | ||
46 | static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg) | |
47 | { | |
48 | return -EINVAL; | |
49 | } | |
50 | ||
51 | static inline void dnotify_parent(struct dentry *dentry, unsigned long event) | |
52 | { | |
53 | } | |
54 | ||
55 | static inline void inode_dir_notify(struct inode *inode, unsigned long event) | |
56 | { | |
57 | } | |
58 | ||
59 | #endif /* CONFIG_DNOTIFY */ | |
60 | ||
61 | #endif /* __KERNEL __ */ | |
62 | ||
63 | #endif /* _LINUX_DNOTIFY_H */ |