linux - include/linux/dnotify.h

63 lines · 1.3 KiB

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 */