c把bin二进制文件写入磁盘任意扇区（引用）

原文 https://blog.csdn.net/c5113620/article/details/84061600

//编译
nasm -f bin boot.asm -o boot.bin
// 然后以【管理员权限】运行下面编译的c程序
PHYSICALDRIVE3 后面的数字，表示磁盘序号，可以右键看--此电脑(我的电脑)--管理--磁盘管理，下面写的，磁盘0，磁盘1

/*读取asm编译好的bin字节文件，写入加载的vhd磁盘扇区
**需要管理员权限运行
*/

#include <Windows.h>
#include <stdio.h>

//存放扇区内容
unsigned char container[512];

//参数：输出的字符串指针，开始位置，长度
//返回值：读取的大小
DWORD ReadDisk(DWORD start, DWORD size)
{
    OVERLAPPED over = { 0 };
    over.Offset = start;
    HANDLE handle = CreateFile(TEXT("\\.\PHYSICALDRIVE3"), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
    DWORD  Error = ERROR_SUCCESS;
    if (handle == INVALID_HANDLE_VALUE)
    {
        Error = GetLastError();
        //5 表示拒绝访问，没有权限
        wprintf(L"ReadDisk sector failed with error code %d
", Error);
        return 0;
    }
    
    DWORD readsize;
    if (ReadFile(handle, container, size, &readsize, &over) == 0)
    {
        CloseHandle(handle);
        return 0;
    }

    //注意这里需要自己释放内存
    CloseHandle(handle);
    return readsize;
}

DWORD WriteDisk( DWORD start, DWORD size)
{
    OVERLAPPED over = { 0 };
    over.Offset = start;
    HANDLE handle = CreateFile(TEXT("\\.\PHYSICALDRIVE3"), GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
    DWORD  Error = ERROR_SUCCESS;
    if (handle == INVALID_HANDLE_VALUE)
    {
        Error = GetLastError();
        wprintf(L"WriteDisk sector failed with error code %d
", Error);
        return 0;
    }
    DWORD writesize;
    if (WriteFile(handle, container, size, &writesize, &over) == 0)
    {
        CloseHandle(handle);
        return 0;
    }
    
    CloseHandle(handle);
    return writesize;
}

void readBin(DWORD start, DWORD size)
{
    OVERLAPPED over = { 0 };
    over.Offset = start;
    HANDLE handle = CreateFile(TEXT("\\.\D:\print.bin"), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
    DWORD  Error = ERROR_SUCCESS;
    if (handle == INVALID_HANDLE_VALUE)
    {
        Error = GetLastError();
        wprintf(L"readBin failed with error code %d
", Error);
        return ;
    }
    DWORD readsize;
    if (ReadFile(handle, container, size, &readsize, &over) == 0)
    {
        CloseHandle(handle);
        return ;
    }
}

void printContainer()
{
    for (unsigned int i = 0; i < 512; i++) {
        printf("%02X ", container[i]);
    }
    printf("
");
}

int main()
{
    DWORD len;

    len = ReadDisk(0, 512);
    printf("len:%d
", len);
    printContainer();

    //读取bin字节
    readBin(0, 512);
    printf("bin:
");
    printContainer();

    getchar();

    len = WriteDisk(0, 512);
    //写入字节数
    printf("len:%d
", len);
    
    getchar();

    return 0;

}