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- Implement KsTopologyPropertyHandler
svn path=/trunk/; revision=39640
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1401814d97
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@ -90,15 +90,172 @@ KsValidateTopologyNodeCreateRequest(
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}
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/*
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@unimplemented
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@implemented
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*/
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KSDDKAPI NTSTATUS NTAPI
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KSDDKAPI
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NTSTATUS
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NTAPI
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KsTopologyPropertyHandler(
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IN PIRP Irp,
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IN PKSPROPERTY Property,
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IN OUT PVOID Data,
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IN const KSTOPOLOGY* Topology)
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{
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UNIMPLEMENTED;
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return STATUS_UNSUCCESSFUL;
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UNICODE_STRING LocalMachine = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\MediaCategories\\");
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UNICODE_STRING Name = RTL_CONSTANT_STRING(L"Name");
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UNICODE_STRING GuidString;
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UNICODE_STRING KeyName;
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OBJECT_ATTRIBUTES ObjectAttributes;
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KSMULTIPLE_ITEM * Item;
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KSP_NODE * Node;
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PIO_STACK_LOCATION IoStack;
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ULONG Size;
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NTSTATUS Status;
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HANDLE hKey;
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PKEY_VALUE_PARTIAL_INFORMATION KeyInfo;
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if (Property->Flags != KSPROPERTY_TYPE_GET)
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{
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Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
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Irp->IoStatus.Information = 0;
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return STATUS_NOT_IMPLEMENTED;
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}
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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switch(Property->Id)
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{
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case KSPROPERTY_TOPOLOGY_CATEGORIES:
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Size = sizeof(KSMULTIPLE_ITEM) + Topology->CategoriesCount * sizeof(GUID);
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if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
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{
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Irp->IoStatus.Information = Size;
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Status = STATUS_BUFFER_TOO_SMALL;
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break;
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}
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Item = (KSMULTIPLE_ITEM*)Irp->UserBuffer;
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Item->Size = Size;
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Item->Count = Topology->CategoriesCount;
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RtlMoveMemory((PVOID)(Item + 1), (PVOID)Topology->Categories, Topology->CategoriesCount * sizeof(GUID));
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Irp->IoStatus.Information = Size;
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Status = STATUS_SUCCESS;
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break;
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case KSPROPERTY_TOPOLOGY_NODES:
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Size = sizeof(KSMULTIPLE_ITEM) + Topology->TopologyNodesCount * sizeof(GUID);
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if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
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{
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Irp->IoStatus.Information = Size;
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Status = STATUS_BUFFER_TOO_SMALL;
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break;
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}
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Item = (KSMULTIPLE_ITEM*)Irp->UserBuffer;
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Item->Size = Size;
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Item->Count = Topology->TopologyNodesCount;
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RtlMoveMemory((PVOID)(Item + 1), (PVOID)Topology->TopologyNodes, Topology->TopologyNodesCount * sizeof(GUID));
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Irp->IoStatus.Information = Size;
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Status = STATUS_SUCCESS;
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break;
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case KSPROPERTY_TOPOLOGY_CONNECTIONS:
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Size = sizeof(KSMULTIPLE_ITEM) + Topology->TopologyConnectionsCount * sizeof(GUID);
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if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
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{
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Irp->IoStatus.Information = Size;
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Status = STATUS_BUFFER_TOO_SMALL;
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break;
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}
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Item = (KSMULTIPLE_ITEM*)Irp->UserBuffer;
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Item->Size = Size;
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Item->Count = Topology->TopologyConnectionsCount;
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RtlMoveMemory((PVOID)(Item + 1), (PVOID)Topology->TopologyConnections, Topology->TopologyConnectionsCount * sizeof(GUID));
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Irp->IoStatus.Information = Size;
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Status = STATUS_SUCCESS;
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break;
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case KSPROPERTY_TOPOLOGY_NAME:
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Node = (KSP_NODE*)Property;
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Status = RtlStringFromGUID(&Topology->TopologyNodesNames[Node->NodeId], &GuidString);
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if (!NT_SUCCESS(Status))
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{
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Irp->IoStatus.Information = 0;
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break;
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}
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KeyName.Length = 0;
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KeyName.MaximumLength = LocalMachine.Length + GuidString.Length + sizeof(WCHAR);
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KeyName.Buffer = ExAllocatePool(PagedPool, KeyName.MaximumLength);
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if (!KeyName.Buffer)
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{
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Irp->IoStatus.Information = 0;
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break;
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}
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RtlAppendUnicodeStringToString(&KeyName, &LocalMachine);
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RtlAppendUnicodeStringToString(&KeyName, &GuidString);
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InitializeObjectAttributes(&ObjectAttributes, &KeyName, OBJ_CASE_INSENSITIVE, NULL, NULL);
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Status = ZwOpenKey(&hKey, GENERIC_READ, &ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("ZwOpenKey() failed with status 0x%08lx\n", Status);
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ExFreePool(KeyName.Buffer);
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Irp->IoStatus.Information = 0;
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break;
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}
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ExFreePool(KeyName.Buffer);
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Status = ZwQueryValueKey(hKey, &Name, KeyValuePartialInformation, NULL, 0, &Size);
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if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_TOO_SMALL)
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{
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ZwClose(hKey);
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Irp->IoStatus.Information = 0;
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break;
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}
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KeyInfo = (PKEY_VALUE_PARTIAL_INFORMATION) ExAllocatePool(NonPagedPool, Size);
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if (!KeyInfo)
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{
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Status = STATUS_NO_MEMORY;
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break;
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}
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Status = ZwQueryValueKey(hKey, &Name, KeyValuePartialInformation, (PVOID)KeyInfo, Size, &Size);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(KeyInfo);
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ZwClose(hKey);
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Irp->IoStatus.Information = 0;
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break;
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}
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ZwClose(hKey);
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if (KeyInfo->DataLength + sizeof(WCHAR) > IoStack->Parameters.DeviceIoControl.OutputBufferLength)
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{
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Irp->IoStatus.Information = KeyInfo->DataLength + sizeof(WCHAR);
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Status = STATUS_BUFFER_TOO_SMALL;
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ExFreePool(KeyInfo);
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break;
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}
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RtlMoveMemory(Irp->UserBuffer, &KeyInfo->Data, KeyInfo->DataLength);
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((LPWSTR)Irp->UserBuffer)[KeyInfo->DataLength / sizeof(WCHAR)] = L'\0';
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Irp->IoStatus.Information = KeyInfo->DataLength + sizeof(WCHAR);
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ExFreePool(KeyInfo);
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break;
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default:
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Irp->IoStatus.Information = 0;
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Status = STATUS_NOT_IMPLEMENTED;
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}
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return Status;
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}
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