status_t
ExtendedPartitionHandle::GetPartitioningInfo(BPartitioningInfo* info)
{
// init to the full size (minus the first PTS_OFFSET)
BMutablePartition* partition = Partition();
off_t offset = partition->Offset() + PTS_OFFSET;
off_t size = partition->Size() - PTS_OFFSET;
status_t error = info->SetTo(offset, size);
if (error != B_OK)
return error;
// exclude the space of the existing logical partitions
int32 count = partition->CountChildren();
for (int32 i = 0; i < count; i++) {
BMutablePartition* child = partition->ChildAt(i);
error = info->ExcludeOccupiedSpace(child->Offset(),
child->Size() + PTS_OFFSET + Partition()->BlockSize());
if (error != B_OK)
return error;
LogicalPartition* logical = (LogicalPartition*)child->ChildCookie();
if (logical == NULL)
return B_BAD_VALUE;
error = info->ExcludeOccupiedSpace(
logical->PartitionTableOffset(),
PTS_OFFSET + Partition()->BlockSize());
if (error != B_OK)
return error;
}
return B_OK;
}
status_t
ExtendedPartitionHandle::Init()
{
// initialize the extended partition from the mutable partition
BMutablePartition* partition = Partition();
// our parent has already set the child cookie to the primary partition.
fPrimaryPartition = (PrimaryPartition*)partition->ChildCookie();
if (!fPrimaryPartition)
return B_BAD_VALUE;
if (!fPrimaryPartition->IsExtended())
return B_BAD_VALUE;
// init the child partitions
int32 count = partition->CountChildren();
for (int32 i = 0; i < count; i++) {
BMutablePartition* child = partition->ChildAt(i);
PartitionType type;
if (!type.SetType(child->Type()))
return B_BAD_VALUE;
void* handle = parse_driver_settings_string(child->Parameters());
if (handle == NULL)
return B_ERROR;
bool active = get_driver_boolean_parameter(
handle, "active", false, true);
off_t ptsOffset = 0;
const char* buffer = get_driver_parameter(handle,
"partition_table_offset", NULL, NULL);
if (buffer != NULL)
ptsOffset = strtoull(buffer, NULL, 10);
else {
delete_driver_settings(handle);
return B_BAD_VALUE;
}
delete_driver_settings(handle);
LogicalPartition* logical = new(nothrow) LogicalPartition;
if (!logical)
return B_NO_MEMORY;
logical->SetTo(child->Offset(), child->Size(), type.Type(), active,
ptsOffset, fPrimaryPartition);
child->SetChildCookie(logical);
}
return B_OK;
}