/*
* adfReadFileExtBlock
*
*/
RETCODE adfReadFileExtBlock(struct Volume *vol, SECTNUM nSect, struct bFileExtBlock* fext)
{
unsigned char buf[sizeof(struct bFileExtBlock)];
RETCODE rc = RC_OK;
adfReadBlock(vol, nSect,buf);
/*printf("read fext=%d\n",nSect);*/
memcpy(fext,buf,sizeof(struct bFileExtBlock));
#ifdef LITT_ENDIAN
swapEndian((unsigned char*)fext, SWBL_FEXT);
#endif
if (fext->checkSum!=adfNormalSum(buf,20,sizeof(struct bFileExtBlock)))
(*adfEnv.wFct)("adfReadFileExtBlock : invalid checksum");
if (fext->type!=T_LIST)
(*adfEnv.wFct)("adfReadFileExtBlock : type T_LIST not found");
if (fext->secType!=ST_FILE)
(*adfEnv.wFct)("adfReadFileExtBlock : stype ST_FILE not found");
if (fext->headerKey!=nSect)
(*adfEnv.wFct)("adfReadFileExtBlock : headerKey!=nSect");
if (fext->highSeq<0 || fext->highSeq>MAX_DATABLK)
(*adfEnv.wFct)("adfReadFileExtBlock : highSeq out of range");
if ( !isSectNumValid(vol, fext->parent) )
(*adfEnv.wFct)("adfReadFileExtBlock : parent out of range");
if ( fext->extension!=0 && !isSectNumValid(vol, fext->extension) )
(*adfEnv.wFct)("adfReadFileExtBlock : extension out of range");
return rc;
}
/*
* adfReadDataBlock
*
*/
RETCODE adfReadDataBlock(struct Volume *vol, SECTNUM nSect, void *data)
{
unsigned char buf[512];
struct bOFSDataBlock *dBlock;
RETCODE rc = RC_OK;
adfReadBlock(vol, nSect,buf);
memcpy(data,buf,512);
if (isOFS(vol->dosType)) {
#ifdef LITT_ENDIAN
swapEndian(data, SWBL_DATA);
#endif
dBlock = (struct bOFSDataBlock*)data;
/*printf("adfReadDataBlock %ld\n",nSect);*/
if (dBlock->checkSum!=adfNormalSum(buf,20,sizeof(struct bOFSDataBlock)))
(*adfEnv.wFct)("adfReadDataBlock : invalid checksum");
if (dBlock->type!=T_DATA)
(*adfEnv.wFct)("adfReadDataBlock : id T_DATA not found");
if (dBlock->dataSize<0 || dBlock->dataSize>488)
(*adfEnv.wFct)("adfReadDataBlock : dataSize incorrect");
if ( !isSectNumValid(vol,dBlock->headerKey) )
(*adfEnv.wFct)("adfReadDataBlock : headerKey out of range");
if ( !isSectNumValid(vol,dBlock->nextData) )
(*adfEnv.wFct)("adfReadDataBlock : nextData out of range");
}
return rc;
}
/*
* adfReadBitmap
*
*/
RETCODE adfReadBitmap(struct Volume* vol, int32_t nBlock, struct bRootBlock* root)
{
int32_t mapSize, nSect;
int32_t j, i;
struct bBitmapExtBlock bmExt;
mapSize = nBlock / (127*32);
if ( (nBlock%(127*32))!=0 )
mapSize++;
vol->bitmapSize = mapSize;
vol->bitmapTable = (struct bBitmapBlock**) malloc(sizeof(struct bBitmapBlock*)*mapSize);
if (!vol->bitmapTable) {
(*adfEnv.eFct)("adfReadBitmap : malloc, vol->bitmapTable");
return RC_MALLOC;
}
vol->bitmapBlocks = (SECTNUM*) malloc(sizeof(SECTNUM)*mapSize);
if (!vol->bitmapBlocks) {
free(vol->bitmapTable);
(*adfEnv.eFct)("adfReadBitmap : malloc, vol->bitmapBlocks");
return RC_MALLOC;
}
vol->bitmapBlocksChg = (BOOL*) malloc(sizeof(BOOL)*mapSize);
if (!vol->bitmapBlocksChg) {
free(vol->bitmapTable); free(vol->bitmapBlocks);
(*adfEnv.eFct)("adfReadBitmap : malloc, vol->bitmapBlocks");
return RC_MALLOC;
}
for(i=0; i<mapSize; i++) {
vol->bitmapBlocksChg[i] = FALSE;
vol->bitmapTable[i] = (struct bBitmapBlock*)malloc(sizeof(struct bBitmapBlock));
if (!vol->bitmapTable[i]) {
free(vol->bitmapBlocksChg); free(vol->bitmapBlocks);
for(j=0; j<i; j++)
free(vol->bitmapTable[j]);
free(vol->bitmapTable);
(*adfEnv.eFct)("adfReadBitmap : malloc, vol->bitmapBlocks");
return RC_MALLOC;
}
}
j=0; i=0;
/* bitmap pointers in rootblock : 0 <= i <BM_SIZE */
while(i<BM_SIZE && root->bmPages[i]!=0) {
vol->bitmapBlocks[j] = nSect = root->bmPages[i];
if ( !isSectNumValid(vol,nSect) ) {
(*adfEnv.wFct)("adfReadBitmap : sector out of range");
}
if (adfReadBitmapBlock(vol, nSect, vol->bitmapTable[j])!=RC_OK) {
adfFreeBitmap(vol);
return RC_ERROR;
}
j++; i++;
}
nSect = root->bmExt;
while(nSect!=0) {
/* bitmap pointers in bitmapExtBlock, j <= mapSize */
if (adfReadBitmapExtBlock(vol, nSect, &bmExt)!=RC_OK) {
adfFreeBitmap(vol);
return RC_ERROR;
}
i=0;
while(i<127 && j<mapSize) {
nSect = bmExt.bmPages[i];
if ( !isSectNumValid(vol,nSect) )
(*adfEnv.wFct)("adfReadBitmap : sector out of range");
vol->bitmapBlocks[j] = nSect;
if (adfReadBitmapBlock(vol, nSect, vol->bitmapTable[j])!=RC_OK) {
adfFreeBitmap(vol);
return RC_ERROR;
}
i++; j++;
}
nSect = bmExt.nextBlock;
}
return RC_OK;
}
