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 */ 63