direct/yaffs_packedtags.c

   1 #include "yaffs_packedtags.h"
   2 #include <string.h>
   3
   4 void yaffs_PackTags(yaffs_PackedTags *pt, yaffs_ExtendedTags *t)
   5 {
   6         pt->chunkId = t->chunkId;
   7         pt->serialNumber = t->serialNumber;
   8         pt->byteCount = t->byteCount;
   9         pt->objectId = t->objectId;
  10         pt->ecc = 0;
  11         pt->deleted = (t->chunkDeleted) ? 0 : 1;
  12         pt->unusedStuff = 0;
  13         pt->shouldBeFF = 0xFFFFFFFF;
  14
  15 }
  16
  17 void yaffs_UnpackTags(yaffs_ExtendedTags *t, yaffs_PackedTags *pt)
  18 {
  19         static __u8 allFF[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff};
  20
  21         if(memcmp(allFF,pt,sizeof(yaffs_PackedTags)))
  22         {
  23                 t->blockBad = 0;
  24                 if(pt->shouldBeFF != 0xFFFFFFFF)
  25                 {
  26                         t->blockBad = 1;
  27                 }
  28                 t->chunkUsed = 1;
  29                 t->objectId = pt->objectId;
  30                 t->chunkId = pt->chunkId;
  31                 t->byteCount = pt->byteCount;
  32                 t->eccResult =  YAFFS_ECC_RESULT_NO_ERROR;
  33                 t->chunkDeleted = (pt->deleted) ? 0 : 1;
  34                 t->serialNumber = pt->serialNumber;
  35         }
  36         else
  37         {
  38                 memset(t,0,sizeof(yaffs_ExtendedTags));
  39
  40         }
  41 }
  42