Question

我试图使用C ++重新分区和格式化USB闪存驱动器，任何帮助都会很棒！

目标是使用单个分区重新划分任意闪存驱动器，占用整个空间并格式化FAT32（后面的选项NTFS和EXFAT）。这将是批量完成的，希望一次有50多个设备，因此驱动器号访问不是一个选项。我能够创建一个分区，但是当我尝试IOCTL_DISK_SET_PARTITION_INFO_EX来设置格式类型时，它失败了0x32，ERROR_NOT_SUPPORTED。但目前尚不清楚究竟是什么不支持。我可以使用诸如diskpart之类的实用程序手动对设备进行分区，因此我知道设备支持分区和文件系统类型。有人可以帮忙吗？我的完整源代码如下，它在使用IOCTL_DISK_SET_PARTITION_INFO_EX进行的DeviceIoControl（）调用失败。

#include "stdafx.h"
#include <random>
#include <Windows.h>
#include <atlstr.h>
#include <iostream>
#include <assert.h>


using namespace std;

#define THROW_CSTRING(a, b) { CString csE; csE.Format(a, b); throw csE; }
#define RANDOM_DWORD {DWORD(rand()) | DWORD(rand() << 8) | DWORD(rand() << 16) | DWORD(rand() << 24)}


int main()
{
  DRIVE_LAYOUT_INFORMATION_EX* pdg = NULL;
  HANDLE hDevice = INVALID_HANDLE_VALUE;

  try
  {

    hDevice = CreateFile(L"\\\\.\\PhysicalDrive2",
                          GENERIC_READ | GENERIC_WRITE, 
                          0,              // Only we can access 
                          NULL,           // Default security
                          OPEN_EXISTING,  // For hardware, open existing 
                          0,              // File attributes
                          NULL);          //Do not copy attributes 
    if (hDevice == INVALID_HANDLE_VALUE)
    {
      THROW_CSTRING(L"ERROR: CreateFile() failed: 0x%x", GetLastError());
    }

    CREATE_DISK dsk;
    memset(&dsk, 0, sizeof(dsk));
    CREATE_DISK_MBR dskmbr = { 0 };
    dskmbr.Signature = 1;
    dsk.PartitionStyle = PARTITION_STYLE_MBR;
    dsk.Mbr = dskmbr;

    // DRIVE_LAYOUT_INFORMAITON_EX has an array of partition info at the end, need enough for 4 partitions minimum
    int iDriveLayoutBytesRequired = sizeof(DRIVE_LAYOUT_INFORMATION_EX) + sizeof(PARTITION_INFORMATION_EX) * 3;
    pdg = (DRIVE_LAYOUT_INFORMATION_EX*)new BYTE[iDriveLayoutBytesRequired];
    memset(pdg, 0, iDriveLayoutBytesRequired);

    DRIVE_LAYOUT_INFORMATION_MBR mbrlayout = { 0 };
    mbrlayout.Signature = RANDOM_DWORD;
    pdg->PartitionStyle = PARTITION_STYLE_MBR;
    pdg->Mbr = mbrlayout;
    pdg->PartitionCount = 1;

    DWORD dwBytesReturned = 0;


    if (!DeviceIoControl(hDevice, IOCTL_DISK_CREATE_DISK, &dsk, sizeof(dsk), NULL, 0, &dwBytesReturned, NULL))
    {
      THROW_CSTRING(L"ERROR: IOCTL_DISK_CREATE_DISK failed: 0x%x", GetLastError());
    }


    // Get the drive dimensions, then use that info to create a new partition 

    // Drive length
    GET_LENGTH_INFORMATION sLenInfo = { 0 };
    if (!DeviceIoControl(hDevice, IOCTL_DISK_GET_LENGTH_INFO, NULL, 0, &sLenInfo, sizeof(sLenInfo), &dwBytesReturned, NULL))
    {
      THROW_CSTRING(L"ERROR: IOCTL_DISK_GET_LENGTH_INFO failed: 0x%x", GetLastError());
    }
    assert(sizeof(sLenInfo.Length.QuadPart) == sizeof(__int64));
    __int64 iDiskLengthBytes = sLenInfo.Length.QuadPart;


    pdg->PartitionStyle = PARTITION_STYLE_MBR;
    pdg->PartitionCount = 4;
    pdg->Mbr.Signature = 1;

    pdg->PartitionEntry[0].PartitionStyle = PARTITION_STYLE_MBR;
    pdg->PartitionEntry[0].StartingOffset.QuadPart = 0;
    pdg->PartitionEntry[0].PartitionLength.QuadPart = iDiskLengthBytes;
    pdg->PartitionEntry[0].PartitionNumber = 1;
    pdg->PartitionEntry[0].RewritePartition = TRUE;

    //pdg->PartitionEntry[0].Mbr.PartitionType = PARTITION_IFS; // NTFS
    pdg->PartitionEntry[0].Mbr.PartitionType = PARTITION_FAT32;
    pdg->PartitionEntry[0].Mbr.BootIndicator = TRUE;
    pdg->PartitionEntry[0].Mbr.RecognizedPartition = 1;
    pdg->PartitionEntry[0].Mbr.HiddenSectors = 0;


    // Partition device
    if (!DeviceIoControl(hDevice, IOCTL_DISK_SET_DRIVE_LAYOUT_EX, pdg, iDriveLayoutBytesRequired, NULL, 0, &dwBytesReturned, NULL))
    {
      THROW_CSTRING(L"ERROR: IOCTL_DISK_SEt_DRIVE_LAYOUT_EX failed: 0x%x", GetLastError());
    }

    // Tell the driver to flush its cache
    if (!DeviceIoControl(hDevice, IOCTL_DISK_UPDATE_PROPERTIES, NULL, 0, NULL, 0, &dwBytesReturned, NULL))
    {
      THROW_CSTRING(L"ERROR: IOCTL_DISK_UPDATE_PROPERTIES failed: 0x%x", GetLastError());
    }

    SET_PARTITION_INFORMATION_EX dskinfo;
    memset(&dskinfo, 0, sizeof(dskinfo));
    dskinfo.PartitionStyle = PARTITION_STYLE_MBR;
    dskinfo.Mbr.PartitionType = PARTITION_FAT32;

    if (!DeviceIoControl(hDevice, IOCTL_DISK_SET_PARTITION_INFO_EX, &dskinfo, sizeof(dskinfo), NULL, 0, &dwBytesReturned, NULL))
    {
      THROW_CSTRING(L"ERROR: IOCTL_DISK_SET_PARTITION_INFO_EX failed: 0x%x", GetLastError());
    }

  }

  catch (CString csErr)
  {
    // Error lookup: https://msdn.microsoft.com/en-us/library/w indows/desktop/ms681382(v=vs.85).aspx
    // 0x7a - ERROR_INSUFFICIENT_BUFFER
    // 0x57 - ERROR_INVALID_PARAMETER
    // 0x32 - ERROR_NOT_SUPPORTED
    // 0x18 - ERROR_BAD_LENGTH
    // 0x05 - ERROR_ACCESS_DENIED
    wcout << csErr.GetString();
  }

  CloseHandle(hDevice);
  delete pdg;
  return 0;
}

Answer 1

我有一个解决方案，但它有点令人费解。我使用上面的DeviceIoControl（）来分区磁盘。然后我使用VDS和IID_IVdsVolumeMF接口来创建文件系统，但是到那里有一些工作。目标是对系统上的所有闪存驱动器（USB记忆棒）进行分区和格式化。 VDS将通过IID_IVdsVolumeMF接口执行格式，但它不会告诉您（至少我还没弄清楚）哪些设备是可移动的。但是WMI会告诉你哪些设备是可移动的，但没有格式化功能。所以...

首先使用WMI获取系统上所有 可移动 卷路径的列表，例如：

CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *)&pLoc)
pLoc->ConnectServer(CComBSTR(L"ROOT\\CIMV2"), nullptr, nullptr, nullptr, 0, nullptr, nullptr, pWbemSvc)
CoSetProxyBlanket(
                                      *pWbemSvc,                        // Indicates the proxy to set
                                      RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx
                                      RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx
                                      NULL,                        // Server principal name 
                                      RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx 
                                      RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
                                      NULL,                        // client identity
                                      EOAC_NONE                    // proxy capabilities 

pWbemSvc->ExecQuery(CComBSTR(L"WQL"), CComBSTR(L"SELECT * FROM Win32_Volume WHERE DriveType=2"), WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator)

为您提供以下路径：

 L"\\\\?\\Volume{3899cb7b-7c3f-11e6-bf82-005056c00008}\\"

然后使用VDS获取计算机上所有VDS卷的列表。基本上你加载VDS，然后获得所有软件提供商。为简洁起见，这个来源缺少部分，但我想我已经足够解释发生了什么：

pSvc->QueryProviders(VDS_QUERY_SOFTWARE_PROVIDERS, &pEnumProviders)

现在遍历提供商列表，从每个提供商处获取包：

pEnumProviders->Next(1, &pUnk, &cFetched)
pProv = pUnk;
pProv->QueryPacks(&pEnumpacks)
vPacks.push_back(pEnumpacks);

现在遍历包并获取每个包中的所有卷：

iterator iPacks = vPacks.begin();
(*iPacks)->Next(1, &pUnk, &cFetched)
pPack = pUnk;
pPack->QueryVolumes(&pEnumvolumes)
pvpEnumvolumes->push_back(pEnumvolumes)

现在您有一个可移动设备的路径列表，并且您有一个系统上所有卷的列表。是时候比较它们并找出哪些卷 可移动 。

iVolEnum = pvpEnumOfVDSVolumes->begin()
(*iVolEnum)->Next(1, &pUnk, &cFetched)
pVMF3 = pUnk;
CComHeapPtr<LPWSTR> pVDSVolumePaths;
pVMF3->QueryVolumeGuidPathnames(&pVDSVolumePaths, &nPaths)
iterator iWMIVolPath = pvWMIRemovableVols->begin();
loop..
if (wcscmp(iWMIVolPath->data(), pVDSVolumePaths[i]) == 0)
{  // VDS Vol is removable! }

现在使用此VDS卷对象格式化卷：

foreach( vol in vRemovableVDSVols )
{
CComQIPtr<IVdsVolume> pVolume = *(vol);
IVdsVolumeMF *pVolumeMF;
pVolume->QueryInterface(IID_IVdsVolumeMF, (void **)&pVolumeMF);
pVolumeMF->Format(  VDS_FST_FAT32, 
                              L"MyFob", 
                              512, // alloc size
                              true, // force
                              false, // quick
                              false, // compression
                              &pAsync); // async
}

然后你的USB记忆棒被格式化了！哇..但似乎工作。

微软真的没有让这更轻松吗？

在C ++中分区和格式化USB闪存驱动器时出错

1 个答案: