GNU Linux-libre 5.10.219-gnu1
[releases.git] / 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, 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