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 inode *dir, const struct qstr *name, 17 struct dentry *dentry, unsigned int flags) 18 { 19 struct inode *inode; 20 int diff; 21 22 if (flags & LOOKUP_RCU) 23 return -ECHILD; 24 25 inode = d_inode(dentry); 26 if(!inode) 27 return 1; 28 29 /* fix up inode on a timezone change */ 30 diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest; 31 if (diff) { 32 struct timespec64 ts = inode_get_ctime(inode); 33 34 inode_set_ctime(inode, ts.tv_sec + diff, ts.tv_nsec); 35 ts = inode_get_atime(inode); 36 inode_set_atime(inode, ts.tv_sec + diff, ts.tv_nsec); 37 ts = inode_get_mtime(inode); 38 inode_set_mtime(inode, ts.tv_sec + diff, ts.tv_nsec); 39 HFS_I(inode)->tz_secondswest += diff; 40 } 41 return 1; 42 } 43 44 const struct dentry_operations hfs_dentry_operations = 45 { 46 .d_revalidate = hfs_revalidate_dentry, 47 .d_hash = hfs_hash_dentry, 48 .d_compare = hfs_compare_dentry, 49 }; 50 51