io_func* openDmgFilePartition(AbstractFile* abstractIn, int partition) {
io_func* toReturn = openDmgFile(abstractIn);
if(toReturn == NULL) {
return NULL;
}
return seekDmgPartition(toReturn, partition);
}
io_func* openDmgFilePartition(AbstractFile* abstractIn, int partition) {
io_func* toReturn;
Partition* partitions;
uint8_t ddmBuffer[SECTOR_SIZE];
DriverDescriptorRecord* ddm;
int numPartitions;
int i;
unsigned int BlockSize;
toReturn = openDmgFile(abstractIn);
if(toReturn == NULL) {
return NULL;
}
toReturn->read(toReturn, 0, SECTOR_SIZE, ddmBuffer);
ddm = (DriverDescriptorRecord*) ddmBuffer;
flipDriverDescriptorRecord(ddm, FALSE);
BlockSize = ddm->sbBlkSize;
partitions = (Partition*) malloc(BlockSize);
toReturn->read(toReturn, BlockSize, BlockSize, partitions);
flipPartitionMultiple(partitions, FALSE, FALSE, BlockSize);
numPartitions = partitions->pmMapBlkCnt;
partitions = (Partition*) realloc(partitions, numPartitions * BlockSize);
toReturn->read(toReturn, BlockSize, numPartitions * BlockSize, partitions);
flipPartition(partitions, FALSE, BlockSize);
if(partition >= 0) {
((DMG*)toReturn->data)->offset = partitions[partition].pmPyPartStart * BlockSize;
} else {
for(i = 0; i < numPartitions; i++) {
if(strcmp((char*)partitions->pmParType, "Apple_HFSX") == 0 || strcmp((char*)partitions->pmParType, "Apple_HFS") == 0) {
((DMG*)toReturn->data)->offset = partitions->pmPyPartStart * BlockSize;
break;
}
partitions = (Partition*)((uint8_t*)partitions + BlockSize);
}
}
return toReturn;
}
