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 struct timespec64 ts = inode_get_ctime(inode); 32 33 inode_set_ctime(inode, ts.tv_sec + diff, ts.tv_nsec); 34 ts = inode_get_atime(inode); 35 inode_set_atime(inode, ts.tv_sec + diff, ts.tv_nsec); 36 ts = inode_get_mtime(inode); 37 inode_set_mtime(inode, ts.tv_sec + diff, ts.tv_nsec); 38 HFS_I(inode)->tz_secondswest += diff; 39 } 40 return 1; 41 } 42 43 const struct dentry_operations hfs_dentry_operations = 44 { 45 .d_revalidate = hfs_revalidate_dentry, 46 .d_hash = hfs_hash_dentry, 47 .d_compare = hfs_compare_dentry, 48 }; 49 50