/*
   *  linux/fs/hfs/sysdep.c
   *
   * Copyright (C) 1996  Paul H. Hargrove
   * (C) 2003 Ardis Technologies <roman@ardistech.com>
   * This file may be distributed under the terms of the GNU General Public License.
   *
   * This file contains the code to do various system dependent things.
   */

  #include <linux/namei.h>

  #include "hfs_fs.h"
  
  /* dentry case-handling: just lowercase everything */
  
  static int hfs_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
  {

  	struct inode *inode;

  	int diff;

  	if (nd->flags & LOOKUP_RCU)
  		return -ECHILD;
  
  	inode = dentry->d_inode;

  	if(!inode)
  		return 1;
  
  	/* fix up inode on a timezone change */
  	diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest;
  	if (diff) {
  		inode->i_ctime.tv_sec += diff;
  		inode->i_atime.tv_sec += diff;
  		inode->i_mtime.tv_sec += diff;
  		HFS_I(inode)->tz_secondswest += diff;
  	}
  	return 1;
  }

  const struct dentry_operations hfs_dentry_operations =

  {
  	.d_revalidate	= hfs_revalidate_dentry,
  	.d_hash		= hfs_hash_dentry,
  	.d_compare	= hfs_compare_dentry,
  };