磁盘扇区数据的读取和写入

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我是靠谱客的博主默默皮卡丘，最近开发中收集的这篇文章主要介绍磁盘扇区数据的读取和写入，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

用sdk对磁盘扇区数据进行读取和写入，代码存在风险，请酌情。

//
// Written by beiyu , beiyuly@gmail.com
// Read and Write Sectors with sdk function, v1.0
// WriteSectors do the job of writing
// ReadSectors do the job of reading
// good luck!
//
#include <windows.h>
#include <winioctl.h>
#include <stdio.h>

#define MAX_BUFFER        65535
//
// 对磁盘扇区数据的写入 dwStartSector为逻辑开始位置 0开始
//
BOOL WriteSectors(BYTE bDrive, DWORD dwStartSector, WORD wSectors, LPBYTE lpSectBuff)
{
        if (bDrive < 0)
                return FALSE;

char devName[] = ".//PHYSICALDRIVE0";
devName[strlen(devName) - 1] = devName[strlen(devName) - 1] + bDrive;

        HANDLE hDev = CreateFile(devName, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
        if (hDev == INVALID_HANDLE_VALUE)
                return 0;

SetFilePointer(hDev, 512 * dwStartSector, 0, FILE_BEGIN);

        DWORD dwCB;
        BOOL bRet = WriteFile(hDev, lpSectBuff, 512 * wSectors, &dwCB, NULL);
        CloseHandle(hDev);

return bRet;
}

//
// 对磁盘扇区数据的读取 dwStartSector为逻辑开始位置 0开始
//
BOOL ReadSectors(BYTE bDrive, DWORD dwStartSector, WORD wSectors, LPBYTE lpSectBuff)
{
if (bDrive < 0)
return FALSE;

char devName[] = ".//PHYSICALDRIVE0";
devName[strlen(devName) - 1] = devName[strlen(devName) - 1] + bDrive;

        HANDLE hDev = CreateFile(devName, GENERIC_READ, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
        if (hDev == INVALID_HANDLE_VALUE)
                return 0;

SetFilePointer(hDev, 512 * dwStartSector, 0, FILE_BEGIN);

        DWORD dwCB;
        BOOL bRet = ReadFile(hDev, lpSectBuff, 512 * wSectors, &dwCB, NULL);
        CloseHandle(hDev);

return bRet;
}

int main(int argc, char *argv[])
{
char szOverBuffer[MAX_BUFFER] = {0};
char szOverBuffer2[MAX_BUFFER] = {0};

printf("/n----------ReadSectors BUFFER2----------/n");
ReadSectors(0, 0, 128, (LPBYTE)szOverBuffer2);

        for(int i=0;i<MAX_BUFFER;i++)
        {
                if(i%16==0)
                {
                        printf("%04X: ",i);
                }
                printf("%02X ",(unsigned char)szOverBuffer2[i]);
                if(i%16==15)
                {
                        printf("/n");
                }
        }

printf("/n----------WriteSectors BUFFER1----------/n");
WriteSectors(0, 0, 128, (LPBYTE)szOverBuffer);

return 1;
}