直接写入HardDisk，WriteFile返回5访问被拒绝错误

问题描述

大家好，

我们有一个工具可以擦除硬盘上的数据。但是我得到WriteFile（）的访问被拒绝错误。这意味着GetLastError（）重新编译错误代码5.我在这里处理代码。< o：p>< / o：p>

we are having a tool which wipes the data from the hard disk. But I get access denied error for WriteFile(). It means the GetLastError() reutrns error code 5. I am coping the code here.<o:p></o:p>

UINT ReadWriteDrive :: WipeDrive（DriveWipeParams * targetDriveParams，WhatToWrite wtw，LPBYTE dataToWrite）

{

  &NBSP; &NBSP;  

UINT ReadWriteDrive::WipeDrive(DriveWipeParams *targetDriveParams, WhatToWrite wtw, LPBYTE dataToWrite)
{
       

    //现在我们将假设整个驱动器擦除;不要查看其他参数

    

   &NBSP; DriveInfo * driveInfo = targetDriveParams-> driveInfo;<○：p为H.< / O：p为H.

   //right now we will assume whole drive wipe; don't look at other parameters
    
    DriveInfo *driveInfo = targetDriveParams->driveInfo;<o:p></o:p>

&NBSP;&NBSP;   QWORD startSector = 0;

     QWORD endSector = driveInfo-> TotalSectors;

  

    QWORD startSector = 0;
    QWORD endSector = driveInfo->TotalSectors;
  

     //现在开始点=开始开车，结束点=开车结束

     QWORD startPos = 0;

     QWORD endPos = driveInfo->尺寸;

    

     HANDLE hDevice;

    //right now start point = start of drive, end point = end of drive
    QWORD startPos = 0;
    QWORD endPos = driveInfo->Size;
    
    HANDLE hDevice;

     //重置进度条线程部分的参考位置

     myCurrentStepPos = 0;

    //reset the reference position for the thread's portion of the progress bar
    myCurrentStepPos = 0;

     // DWORD结果;

     DWORD bytesPerSector = driveInfo-> BytesPerSector;

    

    //DWORD result;
    DWORD bytesPerSector = driveInfo->BytesPerSector;
    

     CString targetDrive; // = _T（" \\\\。"）;

     targetDrive.Append（driveInfo-> DeviceID）;

    

   * _tprintf（_T（"打开驱动器％s \ n"），targetDrive）;

    CString targetDrive;// = _T("\\\\.");
    targetDrive.Append(driveInfo->DeviceID);
    
   *_tprintf(_T("Opening drive %s\n"),targetDrive);

     hDevice = CreateFile（< b&b               GENERIC_READ | GENERIC_WRITE，  //读取和写入权限 &bbsp;               FILE_SHARE_READ | //共享模式

                   FILE_SHARE_WRITE， 

                   NULL，    &NBSP;&NBSP;&NBSP; //默认安全属性

&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP ;   OPEN_EXISTING，   //处置

                    FILE_FLAG_N O_BUFFERING，//文件属性;

    hDevice = CreateFile(targetDrive,
                        GENERIC_READ | GENERIC_WRITE,  //read and write access  
                        FILE_SHARE_READ | // share mode
                        FILE_SHARE_WRITE, 
                        NULL,             // default security attributes
                        OPEN_EXISTING,    // disposition
                        FILE_FLAG_NO_BUFFERING,// file attributes;

             &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; NULL）; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   //不要复制文件属性

                       NULL);            // do not copy file attributes

     if（hDevice == INVALID_HANDLE_VALUE）

     {

   &NBSP;&NBSP;&NBSP;   _tprintf（_T（" [％s]错误：无法打开drive.\ n"），driveInfo-> DeviceID）;

   &NBSP;&NBSP;&NBSP;   fWriteToLog（_T（" [％s]错误：无法打开drive.\ n"），TRUE，driveInfo-> DeviceID）;

   &NBSP;&NBSP;&NBSP;   errorString = _T（"错误：无法打开驱动器。"）; $
   &NBSP;&NBSP;&NBSP;   threadExitCode = 1;

   &NBSP;&NBSP;&NBSP;   errorCodeDetail = GetLastError（）;

   &NBSP;&NBSP;&NBSP;   // CloseHandle（hConsole）;

   &NBSP;&NBSP;&NBSP;  返回1;

    }

    if (hDevice == INVALID_HANDLE_VALUE)
    {
        _tprintf(_T("[%s] Error: unable to open drive.\n"), driveInfo->DeviceID);
        fWriteToLog(_T("[%s] Error: unable to open drive.\n"), TRUE, driveInfo->DeviceID);
        errorString = _T("Error: unable to open drive.");
        threadExitCode = 1;
        errorCodeDetail = GetLastError();
        //CloseHandle(hConsole);
        return 1;
    }

     // 4194304 = 4MB

    

     DWORD bytesProcessed = 0;

    

     QWORD currentPos = startPos; //现在将永远是驱动器的开头

     QWORD intermediateEndPos = endPos - （endPos％BLOCK_SIZE）;

    //4194304 = 4MB
    
    DWORD bytesProcessed = 0;
    
    QWORD currentPos = startPos;//for now will always be beginning of drive
    QWORD intermediateEndPos = endPos - (endPos % BLOCK_SIZE);

    

     //应该每16MB发送一次更新

    
    //should send update for every 16MB

     int updateInterval = 0;

    

     LPBYTE diskBuffer = new BYTE [BLOCK_SIZE];

    

     //零，一，随机写作代码

    

     //使用

  设置内存块与我们想要写入驱动器的内容  //将来可能需要与其他驱动器共享这一点。
     //如果内存成为问题

    开关（wtw）

     {

     case（WhatToWrite :: Random）：

   &NBSP;&NBSP;&NBSP;   // for（int i = 0; i< BLOCK_SIZE; i ++）

   &NBSP;&NBSP;&NBSP;   // diskBuffer [i] = 0;

   &NBSP;&NBSP;&NBSP;   // FillRandBuff（LPBYTE lfprandbuf）< o：p>< / o：p>

    int updateInterval = 0;
    
    LPBYTE diskBuffer = new BYTE[BLOCK_SIZE];
    
    //code for zero, one, random writing
    
    //set the memory block with what we want to write the drive with
    //this may need to be shared with other drives in the future
    //if memory becomes an issue
    switch(wtw)
    {
    case(WhatToWrite::Random):
        //for(int i = 0; i < BLOCK_SIZE; i++)
        //diskBuffer[i] = 0;
        //FillRandBuff(LPBYTE lfprandbuf)<o:p></o:p>

   &NBSP;&NBSP;&NBSP;   FillRandBuff（diskBuffer）;

  &NBSP; &NBSP;    break;

    

     case（WhatToWrite :: Zeros）：

   &NBSP;&NBSP;&NBSP;   for（int i = 0; i< BLOCK_SIZE; i ++）

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   diskBuffer [i] = 0;

  &NBSP; &NBSP;    break;

        FillRandBuff(diskBuffer);
        break;
    
    case(WhatToWrite::Zeros):
        for(int i = 0; i < BLOCK_SIZE; i++)
            diskBuffer[i] = 0;
        break;

     case（WhatToWrite :: Ones）：

   &NBSP;&NBSP;&NBSP;   for（int i = 0; i< BLOCK_SIZE; i ++）

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   diskBuffer [i] = 1;

  &NBSP; &NBSP;  

   &NBSP;&NBSP;&NBSP;   break;

    case(WhatToWrite::Ones):
        for(int i = 0; i < BLOCK_SIZE; i++)
            diskBuffer[i] = 1;
       
        break;

    默认：

   &NBSP;&NBSP;&NBSP;   // _ tprintf（_T（"无效的写入选择。\ n"））;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   CloseHandle（hDevice）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   // CloseHandle（hConsole）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   threadExitCode = 2;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   errorString = _T（"无效的写入选择。"）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   errorCodeDetail = GetLastError（）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   delete [] diskBuffer;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;  返回2;

    }

    default:
        //_tprintf(_T("Invalid write selection.\n"));
            CloseHandle(hDevice);
            //CloseHandle(hConsole);
            threadExitCode = 2;
            errorString = _T("Invalid write selection.");
            errorCodeDetail = GetLastError();
            delete [] diskBuffer;
            return 2;
    }

   &NBSP;&NBSP;   //修复已完成的百分比压倒日志

     double lastProgressEntry = -100;

      for（; currentPos< intermediateEndPos;）   &NBSP;&NBSP;&NBSP;  

     {

   &NBSP;&NBSP;&NBSP; &NBSP; updateInterval ++;&NBSP; &NBSP; &NBSP;  

  &NBSP; &NBSP;&NBSP;&NBSP; &NBSP;  

   &NBSP;&NBSP;&NBSP;   int rcode = WriteFile（hDevice，diskBuffer，BLOCK_SIZE，& bytesProcessed，NULL）;

       //fix for percent done overwhelming the log
    double lastProgressEntry = -100;
     for(; currentPos < intermediateEndPos;)         
    {
        updateInterval++;       
           
        int rcode = WriteFile(hDevice, diskBuffer, BLOCK_SIZE, &bytesProcessed, NULL);

  &NBSP; &NBSP;&NBSP;&NBSP; if（rcode == 0）

   &NBSP;&NBSP;&NBSP;   {

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   threadExitCode = 1;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   errorString = _T（"无法写入驱动器。"）; $
   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   errorCodeDetail = GetLastError（）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   fWriteToLog（_T（"错误代码：％d \ n"）），TRUE，errorCodeDetail）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   _tprintf（_T（"无法写入drive.\ n"））;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   fWriteToLog（_T（" [％s]无法写入drive.\ n"），TRUE，driveInfo-> DeviceID）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; // CloseHandle（hConsole）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;  

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   CloseHandle（hDevice）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   delete [] diskBuffer;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;  返回1;

   &NBSP;&NBSP;&NBSP;  }

        if (rcode == 0)
        {
            threadExitCode = 1;
            errorString = _T("Failed to write to drive.");
            errorCodeDetail = GetLastError();
            fWriteToLog(_T("Error Code: %d\n"), TRUE, errorCodeDetail);
            _tprintf(_T("Failed to write to drive.\n"));
            fWriteToLog(_T("[%s] Failed to write to drive.\n"),TRUE,driveInfo->DeviceID);
             //CloseHandle(hConsole);
            
            CloseHandle(hDevice);
            delete [] diskBuffer;
            return 1;
        }

在切换案例中，它执行以下代码

in switch case statment it executes the below code

  case（WhatToWrite :: Zeros）：

   &NBSP;&NBSP;&NBSP;   for（int i = 0; i< BLOCK_SIZE; i ++）

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   diskBuffer [i] = 0;

 case(WhatToWrite::Zeros):
        for(int i = 0; i < BLOCK_SIZE; i++)
            diskBuffer[i] = 0;

然后createFile（）也成功了。但WriteFile（）返回错误代码5.请帮我解决这个问题。

Then the createFile() also successful. But WriteFile() returns error code 5. Please help me to solve this issue.

Rani manickam

Rani manickam

推荐答案

我不确定您的位置追踪是硬盘驱动器将在位置0（并且如果它是交易安全的情况下可能位置为1）具有主引导记录，您可能没有写入权限，并且可能是您的
错误的来源。 我建议搜索一些其他有用的示例代码网站，因为消隐磁盘的内容不是一个新概念，可能会有一些有用的帖子。 例如，我发现这是在计算器上
功能。可以帮助你。

I am not sure about your position tracking as the hard drive will have a Master Boot Record at position 0 (and potentially position 1 if it is transaction safe) that you probably don't have permission to write and potentially that is the source of your error.  I recommend searching some of the other helpful sample code sites as blanking the contents of a disk is not a new concept there are likely to be some helpful posts there.  For example I found this one on StackOverflowhttp://stackoverflow.com/questions/13390843/how-to-erase-a-hard-disk-drive that might help you.

此致

IoTGirl

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