117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <initguid.h>
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#include <virtdisk.h>
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#include <rpc.h>
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#include "Storage.h"
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//
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// This sample demonstrates how to create VHDs and VHDXs.
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//
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DWORD
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SampleCreateVirtualDisk(
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_In_ LPCWSTR VirtualDiskPath,
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_In_opt_ LPCWSTR ParentPath,
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_In_ CREATE_VIRTUAL_DISK_FLAG Flags,
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_In_ ULONGLONG FileSize,
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_In_ DWORD BlockSize,
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_In_ DWORD LogicalSectorSize,
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_In_ DWORD PhysicalSectorSize)
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{
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VIRTUAL_STORAGE_TYPE storageType;
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CREATE_VIRTUAL_DISK_PARAMETERS parameters;
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HANDLE vhdHandle = INVALID_HANDLE_VALUE;
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DWORD opStatus;
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GUID uniqueId;
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if (RPC_S_OK != UuidCreate((UUID*)&uniqueId))
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{
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opStatus = ERROR_NOT_ENOUGH_MEMORY;
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goto Cleanup;
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}
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//
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// Specify UNKNOWN for both device and vendor so the system will use the
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// file extension to determine the correct VHD format.
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//
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storageType.DeviceId = VIRTUAL_STORAGE_TYPE_DEVICE_UNKNOWN;
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storageType.VendorId = VIRTUAL_STORAGE_TYPE_VENDOR_UNKNOWN;
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memset(¶meters, 0, sizeof(parameters));
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//
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// CREATE_VIRTUAL_DISK_VERSION_2 allows specifying a richer set a values and returns
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// a V2 handle.
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//
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// VIRTUAL_DISK_ACCESS_NONE is the only acceptable access mask for V2 handle opens.
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//
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// Valid BlockSize values are as follows (use 0 to indicate default value):
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// Fixed VHD: 0
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// Dynamic VHD: 512kb, 2mb (default)
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// Differencing VHD: 512kb, 2mb (if parent is fixed, default is 2mb; if parent is dynamic or differencing, default is parent blocksize)
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// Fixed VHDX: 0
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// Dynamic VHDX: 1mb, 2mb, 4mb, 8mb, 16mb, 32mb (default), 64mb, 128mb, 256mb
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// Differencing VHDX: 1mb, 2mb (default), 4mb, 8mb, 16mb, 32mb, 64mb, 128mb, 256mb
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//
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// Valid LogicalSectorSize values are as follows (use 0 to indicate default value):
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// VHD: 512 (default)
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// VHDX: 512 (for fixed or dynamic, default is 512; for differencing, default is parent logicalsectorsize), 4096
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//
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// Valid PhysicalSectorSize values are as follows (use 0 to indicate default value):
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// VHD: 512 (default)
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// VHDX: 512, 4096 (for fixed or dynamic, default is 4096; for differencing, default is parent physicalsectorsize)
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//
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parameters.Version = CREATE_VIRTUAL_DISK_VERSION_2;
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parameters.Version2.UniqueId = uniqueId;
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parameters.Version2.MaximumSize = FileSize;
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parameters.Version2.BlockSizeInBytes = BlockSize;
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parameters.Version2.SectorSizeInBytes = LogicalSectorSize;
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parameters.Version2.PhysicalSectorSizeInBytes = PhysicalSectorSize;
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parameters.Version2.ParentPath = ParentPath;
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opStatus = CreateVirtualDisk(
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&storageType,
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VirtualDiskPath,
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VIRTUAL_DISK_ACCESS_NONE,
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NULL,
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Flags,
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0,
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¶meters,
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NULL,
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&vhdHandle);
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if (opStatus != ERROR_SUCCESS)
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{
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goto Cleanup;
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}
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Cleanup:
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if (opStatus == ERROR_SUCCESS)
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{
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wprintf(L"success\n");
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}
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else
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{
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wprintf(L"error = %u\n", opStatus);
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}
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if (vhdHandle != INVALID_HANDLE_VALUE)
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{
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CloseHandle(vhdHandle);
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}
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return opStatus;
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}
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