windows下用C++实现SCSI READ一次命令读取512K数据代码

以下是一个简单的 C++ 代码示例，用于在 Windows 环境下使用 SCSI READ 命令读取 512K 数据：

#include <windows.h>
#include <winioctl.h>

#define SECTOR_SIZE 512
#define BUFFER_SIZE (SECTOR_SIZE * 1024)

int main()
{
    HANDLE hDevice = CreateFile("\\\\.\\PhysicalDrive0", GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
        NULL, OPEN_EXISTING, 0, NULL);
    if (hDevice == INVALID_HANDLE_VALUE)
    {
        printf("Failed to open device, error code: %d\n", GetLastError());
        return 1;
    }

    BYTE buffer[BUFFER_SIZE] = { 0 };
    DWORD bytesReturned = 0;
    STORAGE_PROPERTY_QUERY storagePropertyQuery = { 0 };
    STORAGE_DESCRIPTOR_HEADER storageDescriptorHeader = { 0 };
    storagePropertyQuery.PropertyId = StorageAdapterProperty;
    storagePropertyQuery.QueryType = PropertyStandardQuery;

    if (!DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY,
        &storagePropertyQuery, sizeof(storagePropertyQuery), &storageDescriptorHeader,
        sizeof(storageDescriptorHeader), &bytesReturned, NULL))
    {
        printf("Failed to retrieve adapter property, error code: %d\n", GetLastError());
        CloseHandle(hDevice);
        return 1;
    }

    STORAGE_READ_CAPACITY readCapacity = { 0 };
    if (!DeviceIoControl(hDevice, IOCTL_STORAGE_READ_CAPACITY, NULL, 0, &readCapacity,
        sizeof(readCapacity), &bytesReturned, NULL))
    {
        printf("Failed to retrieve read capacity, error code: %d\n", GetLastError());
        CloseHandle(hDevice);
        return 1;
    }

    DWORD sectorCount = readCapacity.DiskLength.QuadPart / SECTOR_SIZE;
    DWORD startingSector = 0;
    if (!DeviceIoControl(hDevice, IOCTL_STORAGE_CHECK_VERIFY, NULL, 0, NULL, 0,
        &bytesReturned, NULL))
    {
        printf("Failed to verify device, error code: %d\n", GetLastError());
        CloseHandle(hDevice);
        return 1;
    }

    SCSI_PASS_THROUGH_DIRECT_WITH_BUFFER sptdwb = { 0 };
    sptdwb.sptd.Length = sizeof(SCSI_PASS_THROUGH_DIRECT);
    sptdwb.sptd.PathId = 0;
    sptdwb.sptd.TargetId = 0;
    sptdwb.sptd.Lun = 0;
    sptdwb.sptd.TimeOutValue = 2;
    sptdwb.sptd.DataIn = SCSI_IOCTL_DATA_IN;
    sptdwb.sptd.DataTransferLength = BUFFER_SIZE;
    sptdwb.sptd.DataBuffer = buffer;
    sptdwb.sptd.SenseInfoLength = SPT_SENSE_LENGTH;
    sptdwb.sptd.CdbLength = 10;
    sptdwb.sptd.SenseInfoOffset = offsetof(SCSI_PASS_THROUGH_DIRECT_WITH_BUFFER, SenseBuf);
    sptdwb.sptd.Cdb[0] = 0x28;  // SCSI READ command
    sptdwb.sptd.Cdb[1] = 0;
    sptdwb.sptd.Cdb[2] = (startingSector >> 24) & 0xFF;
    sptdwb.sptd.Cdb[3] = (startingSector >> 16) & 0xFF;
    sptdwb.sptd.Cdb[4] = (startingSector >> 8) & 0xFF;
    sptdwb.sptd.Cdb[5] = startingSector & 0xFF;
    sptdwb.sptd.Cdb[6] = 0;
    sptdwb.sptd.Cdb[7] = (BUFFER_SIZE / SECTOR_SIZE) & 0xFF;
    sptdwb.sptd.Cdb[8] = 0;
    sptdwb.sptd.Cdb[9] = 0;

    if (!DeviceIoControl(hDevice, IOCTL_SCSI_PASS_THROUGH_DIRECT, &sptdwb,
        sizeof(SCSI_PASS_THROUGH_DIRECT_WITH_BUFFER), &sptdwb,
        sizeof(SCSI_PASS_THROUGH_DIRECT_WITH_BUFFER), &bytesReturned, NULL))
    {
        printf("Failed to execute SCSI READ command, error code: %d\n", GetLastError());
        CloseHandle(hDevice);
        return 1;
    }

    CloseHandle(hDevice);
    return 0;
}

请注意，这只是一个简单的示例代码，可能需要根据实际情况进行更改。同时，使用 SCSI 命令需要具有足够的权限，并且必须小心谨慎，以免意外损坏设备。