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 

    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 */