Eric Lee / smarc-fsl-linux-kernel

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include/linux/dnotify.h 1.24 KB
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1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  #ifndef _LINUX_DNOTIFY_H
  #define _LINUX_DNOTIFY_H
  /*
   * Directory notification for Linux
   *
   * Copyright (C) 2000,2002 Stephen Rothwell
   */
  
  #include <linux/fs.h>
  
  struct dnotify_struct {
  	struct dnotify_struct *	dn_next;
  	unsigned long		dn_mask;
  	int			dn_fd;
  	struct file *		dn_filp;
  	fl_owner_t		dn_owner;
  };
  
  #ifdef __KERNEL__
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  #ifdef CONFIG_DNOTIFY
  
  extern void __inode_dir_notify(struct inode *, unsigned long);
  extern void dnotify_flush(struct file *, fl_owner_t);
  extern int fcntl_dirnotify(int, struct file *, unsigned long);
  extern void dnotify_parent(struct dentry *, unsigned long);
  
  static inline void inode_dir_notify(struct inode *inode, unsigned long event)
  {
  	if (inode->i_dnotify_mask & (event))
  		__inode_dir_notify(inode, event);
  }
  
  #else
  
  static inline void __inode_dir_notify(struct inode *inode, unsigned long event)
  {
  }
  
  static inline void dnotify_flush(struct file *filp, fl_owner_t id)
  {
  }
  
  static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
  {
  	return -EINVAL;
  }
  
  static inline void dnotify_parent(struct dentry *dentry, unsigned long event)
  {
  }
  
  static inline void inode_dir_notify(struct inode *inode, unsigned long event)
  {
  }
  
  #endif /* CONFIG_DNOTIFY */
  
  #endif /* __KERNEL __ */
  
  #endif /* _LINUX_DNOTIFY_H */