zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/fs/hfs/sysdep.c b/ap/os/linux/linux-3.4.x/fs/hfs/sysdep.c
new file mode 100644
index 0000000..19cf291
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/hfs/sysdep.c
@@ -0,0 +1,45 @@
+/*
+ * linux/fs/hfs/sysdep.c
+ *
+ * Copyright (C) 1996 Paul H. Hargrove
+ * (C) 2003 Ardis Technologies <roman@ardistech.com>
+ * This file may be distributed under the terms of the GNU General Public License.
+ *
+ * This file contains the code to do various system dependent things.
+ */
+
+#include <linux/namei.h>
+#include "hfs_fs.h"
+
+/* dentry case-handling: just lowercase everything */
+
+static int hfs_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
+{
+ struct inode *inode;
+ int diff;
+
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ inode = dentry->d_inode;
+ if(!inode)
+ return 1;
+
+ /* fix up inode on a timezone change */
+ diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest;
+ if (diff) {
+ inode->i_ctime.tv_sec += diff;
+ inode->i_atime.tv_sec += diff;
+ inode->i_mtime.tv_sec += diff;
+ HFS_I(inode)->tz_secondswest += diff;
+ }
+ return 1;
+}
+
+const struct dentry_operations hfs_dentry_operations =
+{
+ .d_revalidate = hfs_revalidate_dentry,
+ .d_hash = hfs_hash_dentry,
+ .d_compare = hfs_compare_dentry,
+};
+