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 
hfs_revalidate_dentry(struct dentry * dentry,unsigned int flags)16 static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags)
17 {
18 	struct inode *inode;
19 	int diff;
20 
21 	if (flags & LOOKUP_RCU)
22 		return -ECHILD;
23 
24 	inode = d_inode(dentry);
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 
46