yaffs_packedtags1.c

   1 #include "yaffs_packedtags1.h"
   2 #include "yportenv.h"
   3
   4 void yaffs_PackTags1(yaffs_PackedTags1 * pt, const 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_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt)
  18 {
  19         static const __u8 allFF[] =
  20             { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  21 0xff };
  22
  23         if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
  24                 t->blockBad = 0;
  25                 if (pt->shouldBeFF != 0xFFFFFFFF) {
  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         } else {
  36                 memset(t, 0, sizeof(yaffs_ExtendedTags));
  37
  38         }
  39 }