fs/hfs/sysdep.c

   1 /*
   2  *  linux/fs/hfs/sysdep.c
   3  *
   4  * Copyright (C) 1996  Paul H. Hargrove
   5  * (C) 2003 Ardis Technologies <roman@ardistech.com>
   6  * This file may be distributed under the terms of the GNU General Public License.
   7  *
   8  * This file contains the code to do various system dependent things.
   9  */
  10
  11 #include <linux/namei.h>
  12 #include "hfs_fs.h"
  13
  14 /* dentry case-handling: just lowercase everything */
  15
  16 static int hfs_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
  17 {
  18         struct inode *inode;
  19         int diff;
  20
  21         if (nd->flags & LOOKUP_RCU)
  22                 return -ECHILD;
  23
  24         inode = dentry->d_inode;
  25         if(!inode)
  26                 return 1;
  27
  28         /* fix up inode on a timezone change */
  29         diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest;
  30         if (diff) {
  31                 inode->i_ctime.tv_sec += diff;
  32                 inode->i_atime.tv_sec += diff;
  33                 inode->i_mtime.tv_sec += diff;
  34                 HFS_I(inode)->tz_secondswest += diff;
  35         }
  36         return 1;
  37 }
  38
  39 const struct dentry_operations hfs_dentry_operations =
  40 {
  41         .d_revalidate   = hfs_revalidate_dentry,
  42         .d_hash         = hfs_hash_dentry,
  43         .d_compare      = hfs_compare_dentry,
  44 };
  45