status_t
ExtendedPartitionHandle::DeleteChild(BMutablePartition* child)
{
BMutablePartition* parent = child->Parent();
status_t error = parent->DeleteChild(child);
return error;
}
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;
}
// CreateChild
status_t
BPartition::Delegate::CreateChild(off_t start, off_t size, const char* type,
const char* name, const char* parameters, BPartition** child)
{
if (!fPartitionHandle)
return B_NO_INIT;
BMutablePartition* mutableChild;
status_t error = fPartitionHandle->CreateChild(start, size, type, name,
parameters, &mutableChild);
if (error != B_OK)
return error;
if (child)
*child = mutableChild->GetDelegate()->Partition();
return B_OK;
}
uint32
PartitionMapHandle::SupportedOperations(uint32 mask)
{
BMutablePartition* partition = Partition();
uint32 flags = B_DISK_SYSTEM_SUPPORTS_RESIZING
| B_DISK_SYSTEM_SUPPORTS_MOVING
| B_DISK_SYSTEM_SUPPORTS_SETTING_CONTENT_PARAMETERS
| B_DISK_SYSTEM_SUPPORTS_INITIALIZING;
// creating child
if ((mask & B_DISK_SYSTEM_SUPPORTS_CREATING_CHILD) != 0) {
BPartitioningInfo info;
if (partition->CountChildren() < 4
&& GetPartitioningInfo(&info) == B_OK
&& info.CountPartitionableSpaces() > 1) {
flags |= B_DISK_SYSTEM_SUPPORTS_CREATING_CHILD;
}
}
return flags;
}
status_t
GPTPartitionHandle::GetPartitioningInfo(BPartitioningInfo* info)
{
// init to the full size (minus the GPT table header and entries)
off_t size = Partition()->ContentSize();
// TODO: use fHeader
size_t headerSize = Partition()->BlockSize() + 16384;
status_t status = info->SetTo(Partition()->BlockSize() + headerSize,
size - Partition()->BlockSize() - 2 * headerSize);
if (status != B_OK)
return status;
// Exclude the space of the existing partitions
size_t count = Partition()->CountChildren();
for (size_t index = 0; index < count; index++) {
BMutablePartition* child = Partition()->ChildAt(index);
status = info->ExcludeOccupiedSpace(child->Offset(), child->Size());
if (status != B_OK)
return status;
}
return B_OK;
}
status_t
PartitionMapHandle::Init()
{
// initialize the partition map from the mutable partition
BMutablePartition* partition = Partition();
int32 count = partition->CountChildren();
if (count > 4)
return B_BAD_VALUE;
int32 extendedCount = 0;
for (int32 i = 0; i < count; i++) {
BMutablePartition* child = partition->ChildAt(i);
PartitionType type;
if (!type.SetType(child->Type()))
return B_BAD_VALUE;
// only one extended partition is allowed
if (type.IsExtended()) {
if (++extendedCount > 1)
return B_BAD_VALUE;
}
// TODO: Get these from the parameters.
int32 index = i;
bool active = false;
PrimaryPartition* primary = fPartitionMap.PrimaryPartitionAt(index);
primary->SetTo(child->Offset(), child->Size(), type.Type(), active,
partition->BlockSize());
child->SetChildCookie(primary);
}
// The extended partition (if any) is initialized by
// ExtendedPartitionHandle::Init().
return B_OK;
}
status_t
GPTPartitionHandle::CreateChild(off_t offset, off_t size,
const char* typeString, const char* name, const char* parameters,
BMutablePartition** _child)
{
// create the child
BMutablePartition* partition = Partition();
BMutablePartition* child;
status_t status = partition->CreateChild(partition->CountChildren(),
typeString, name, parameters, &child);
if (status != B_OK)
return status;
// init the child
child->SetOffset(offset);
child->SetSize(size);
child->SetBlockSize(partition->BlockSize());
*_child = child;
return B_OK;
}
status_t
ExtendedPartitionHandle::CreateChild(off_t offset, off_t size,
const char* typeString, const char* name, const char* _parameters,
BMutablePartition** _child)
{
// check type
PartitionType type;
if (!type.SetType(typeString) || type.IsEmpty())
return B_BAD_VALUE;
// check name
if (name != NULL && name[0] != '\0')
return B_BAD_VALUE;
// offset properly aligned?
if (offset != sector_align(offset, Partition()->BlockSize())
|| size != sector_align(size, Partition()->BlockSize()))
return B_BAD_VALUE;
// check the free space situation
BPartitioningInfo info;
status_t error = GetPartitioningInfo(&info);
if (error != B_OK)
return error;
bool foundSpace = false;
off_t end = offset + size;
int32 spacesCount = info.CountPartitionableSpaces();
for (int32 i = 0; i < spacesCount; i++) {
off_t spaceOffset, spaceSize;
info.GetPartitionableSpaceAt(i, &spaceOffset, &spaceSize);
off_t spaceEnd = spaceOffset + spaceSize;
if (offset >= spaceOffset && end <= spaceEnd) {
foundSpace = true;
break;
}
}
if (!foundSpace)
return B_BAD_VALUE;
BString parameters(_parameters);
parameters << "partition_table_offset " << offset - PTS_OFFSET << " ;\n";
// everything looks good, create the child
BMutablePartition* child;
error = Partition()->CreateChild(-1, typeString,
NULL, parameters.String(), &child);
if (error != B_OK)
return error;
// init the child
child->SetOffset(offset);
child->SetSize(size);
child->SetBlockSize(Partition()->BlockSize());
//child->SetFlags(0);
child->SetChildCookie(Partition());
*_child = child;
return B_OK;
}
status_t
GPTPartitionHandle::DeleteChild(BMutablePartition* child)
{
BMutablePartition* parent = child->Parent();
return parent->DeleteChild(child);
}
status_t
PartitionMapHandle::CreateChild(off_t offset, off_t size,
const char* typeString, const char* name, const char* parameters,
BMutablePartition** _child)
{
// check type
PartitionType type;
if (!type.SetType(typeString) || type.IsEmpty())
return B_BAD_VALUE;
if (type.IsExtended() && fPartitionMap.ExtendedPartitionIndex() >= 0)
return B_BAD_VALUE;
// check name
if (name && *name != '\0')
return B_BAD_VALUE;
// check parameters
void* handle = parse_driver_settings_string(parameters);
if (handle == NULL)
return B_ERROR;
bool active = get_driver_boolean_parameter(handle, "active", false, true);
delete_driver_settings(handle);
// get a spare primary partition
PrimaryPartition* primary = NULL;
for (int32 i = 0; i < 4; i++) {
if (fPartitionMap.PrimaryPartitionAt(i)->IsEmpty()) {
primary = fPartitionMap.PrimaryPartitionAt(i);
break;
}
}
if (!primary)
return B_BAD_VALUE;
// offset properly aligned?
if (offset != sector_align(offset, Partition()->BlockSize())
|| size != sector_align(size, Partition()->BlockSize()))
return B_BAD_VALUE;
// check the free space situation
BPartitioningInfo info;
status_t error = GetPartitioningInfo(&info);
if (error != B_OK)
return error;
bool foundSpace = false;
off_t end = offset + size;
int32 spacesCount = info.CountPartitionableSpaces();
for (int32 i = 0; i < spacesCount; i++) {
off_t spaceOffset, spaceSize;
info.GetPartitionableSpaceAt(i, &spaceOffset, &spaceSize);
off_t spaceEnd = spaceOffset + spaceSize;
if (offset >= spaceOffset && end <= spaceEnd) {
foundSpace = true;
break;
}
}
if (!foundSpace)
return B_BAD_VALUE;
// create the child
// (Note: the primary partition index is indeed the child index, since
// we picked the first empty primary partition.)
BMutablePartition* partition = Partition();
BMutablePartition* child;
error = partition->CreateChild(primary->Index(), typeString, name,
parameters, &child);
if (error != B_OK)
return error;
// init the child
child->SetOffset(offset);
child->SetSize(size);
child->SetBlockSize(partition->BlockSize());
//child->SetFlags(0);
child->SetChildCookie(primary);
// init the primary partition
primary->SetTo(offset, size, type.Type(), active, partition->BlockSize());
*_child = child;
return B_OK;
}
// ChildAt
BPartition::Delegate*
BPartition::Delegate::ChildAt(int32 index) const
{
BMutablePartition* child = fMutablePartition.ChildAt(index);
return child ? child->GetDelegate() : NULL;
}