target/linux/generic-2.6/files/fs/yaffs2/yaffs_tagsvalidity.c

   1 /*
   2  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
   3  *
   4  * Copyright (C) 2002-2007 Aleph One Ltd.
   5  *   for Toby Churchill Ltd and Brightstar Engineering
   6  *
   7  * Created by Charles Manning <charles@aleph1.co.uk>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include "yaffs_tagsvalidity.h"
  15
  16 void yaffs_InitialiseTags(yaffs_ExtendedTags * tags)
  17 {
  18         memset(tags, 0, sizeof(yaffs_ExtendedTags));
  19         tags->validMarker0 = 0xAAAAAAAA;
  20         tags->validMarker1 = 0x55555555;
  21 }
  22
  23 int yaffs_ValidateTags(yaffs_ExtendedTags * tags)
  24 {
  25         return (tags->validMarker0 == 0xAAAAAAAA &&
  26                 tags->validMarker1 == 0x55555555);
  27
  28 }