/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
#include "yaffs_packedtags2.h"
#include "yportenv.h"
+#include "yaffs_trace.h"
#include "yaffs_tagsvalidity.h"
/* This code packs a set of extended tags into a binary structure for
#define EXTRA_OBJECT_TYPE_MASK ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT)
-static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart * ptt)
+static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt)
{
T(YAFFS_TRACE_MTD,
(TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
ptt->objectId, ptt->chunkId, ptt->byteCount,
ptt->sequenceNumber));
}
-static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt)
+static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt)
{
yaffs_DumpPackedTags2TagsPart(&pt->t);
}
-static void yaffs_DumpTags2(const yaffs_ExtendedTags * t)
+static void yaffs_DumpTags2(const yaffs_ExtendedTags *t)
{
T(YAFFS_TRACE_MTD,
(TSTR
}
-void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart * ptt, const yaffs_ExtendedTags * t)
+void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
+ const yaffs_ExtendedTags *t)
{
ptt->chunkId = t->chunkId;
ptt->sequenceNumber = t->sequenceNumber;
/* We save the parent object in the chunkId */
ptt->chunkId = EXTRA_HEADER_INFO_FLAG
| t->extraParentObjectId;
- if (t->extraIsShrinkHeader) {
+ if (t->extraIsShrinkHeader)
ptt->chunkId |= EXTRA_SHRINK_FLAG;
- }
- if (t->extraShadows) {
+ if (t->extraShadows)
ptt->chunkId |= EXTRA_SHADOWS_FLAG;
- }
ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
ptt->objectId |=
(t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
+ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
ptt->byteCount = t->extraEquivalentObjectId;
- } else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) {
+ else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE)
ptt->byteCount = t->extraFileLength;
- } else {
+ else
ptt->byteCount = 0;
- }
}
yaffs_DumpPackedTags2TagsPart(ptt);
}
-void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t)
+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t, int tagsECC)
{
- yaffs_PackTags2TagsPart(&pt->t,t);
+ yaffs_PackTags2TagsPart(&pt->t, t);
-#ifndef YAFFS_IGNORE_TAGS_ECC
- {
+ if(tagsECC)
yaffs_ECCCalculateOther((unsigned char *)&pt->t,
sizeof(yaffs_PackedTags2TagsPart),
&pt->ecc);
- }
-#endif
}
-void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags * t, yaffs_PackedTags2TagsPart * ptt)
+void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t,
+ yaffs_PackedTags2TagsPart *ptt)
{
memset(t, 0, sizeof(yaffs_ExtendedTags));
ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT;
t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
+ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
t->extraEquivalentObjectId = ptt->byteCount;
- } else {
+ else
t->extraFileLength = ptt->byteCount;
- }
}
}
}
-void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt)
+void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt, int tagsECC)
{
yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR;
-
- if (pt->t.sequenceNumber != 0xFFFFFFFF) {
- /* Page is in use */
-#ifndef YAFFS_IGNORE_TAGS_ECC
- {
- yaffs_ECCOther ecc;
- int result;
- yaffs_ECCCalculateOther((unsigned char *)&pt->t,
- sizeof
- (yaffs_PackedTags2TagsPart),
- &ecc);
- result =
- yaffs_ECCCorrectOther((unsigned char *)&pt->t,
- sizeof
- (yaffs_PackedTags2TagsPart),
- &pt->ecc, &ecc);
- switch(result){
- case 0:
- eccResult = YAFFS_ECC_RESULT_NO_ERROR;
- break;
- case 1:
- eccResult = YAFFS_ECC_RESULT_FIXED;
- break;
- case -1:
- eccResult = YAFFS_ECC_RESULT_UNFIXED;
- break;
- default:
- eccResult = YAFFS_ECC_RESULT_UNKNOWN;
- }
+
+ if (pt->t.sequenceNumber != 0xFFFFFFFF &&
+ tagsECC){
+ /* Chunk is in use and we need to do ECC */
+
+ yaffs_ECCOther ecc;
+ int result;
+ yaffs_ECCCalculateOther((unsigned char *)&pt->t,
+ sizeof(yaffs_PackedTags2TagsPart),
+ &ecc);
+ result = yaffs_ECCCorrectOther((unsigned char *)&pt->t,
+ sizeof(yaffs_PackedTags2TagsPart),
+ &pt->ecc, &ecc);
+ switch (result) {
+ case 0:
+ eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+ break;
+ case 1:
+ eccResult = YAFFS_ECC_RESULT_FIXED;
+ break;
+ case -1:
+ eccResult = YAFFS_ECC_RESULT_UNFIXED;
+ break;
+ default:
+ eccResult = YAFFS_ECC_RESULT_UNKNOWN;
}
-#endif
}
- yaffs_UnpackTags2TagsPart(t,&pt->t);
-
+ yaffs_UnpackTags2TagsPart(t, &pt->t);
+
t->eccResult = eccResult;
yaffs_DumpPackedTags2(pt);
yaffs_DumpTags2(t);
-
}