这一系列文章是根据cutebunny 的BLOG “windows的磁盘操作” 写成的,主要是部分修改原作中的代码,使之兼容Unicode和Windows 7 64bit. 原文可以在下面的网址找到

http://cutebunny.blog.51cto.com 。 本文是参考 “windows的磁盘操作之四——根据逻辑分区号获得物理磁盘号”写成。实现的功能简单的说就是输入 c: ,程序返回这个

盘符是处于 \\physicalDriveX 上的。

// GetPD.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "windows.h"

/******************************************************************************
* Function: get disk's physical number from its drive letter
*           e.g. C-->0 (C: is on disk0)
* input: letter, drive letter
* output: N/A
* return: Succeed, disk number
*         Fail, -1
******************************************************************************/
DWORD GetPhysicalDriveFromPartitionLetter(TCHAR letter)
{
    HANDLE hDevice;               // handle to the drive to be examined
    BOOL result;                 // results flag
    DWORD readed;                   // discard results
    STORAGE_DEVICE_NUMBER number;   //use this to get disk numbers
 
    TCHAR path[MAX_PATH];
    wsprintf(path, L"\\\\.\\%c:", letter);
    hDevice = CreateFile(path, // drive to open
                         GENERIC_READ | GENERIC_WRITE,    // access to the drive
                         FILE_SHARE_READ | FILE_SHARE_WRITE,    //share mode
                         NULL,             // default security attributes
                         OPEN_EXISTING,    // disposition
                         0,                // file attributes
                         NULL);            // do not copy file attribute
    if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
    {
        fprintf(stderr, "CreateFile() Error: %ld\n", GetLastError());
        return DWORD(-1);
    }
 
    result = DeviceIoControl(
                hDevice,                // handle to device
                IOCTL_STORAGE_GET_DEVICE_NUMBER, // dwIoControlCode
                NULL,                            // lpInBuffer
                0,                               // nInBufferSize
                &number,           // output buffer
                sizeof(number),         // size of output buffer
                &readed,       // number of bytes returned
                NULL      // OVERLAPPED structure
            );
    if (!result) // fail
    {
        fprintf(stderr, "IOCTL_STORAGE_GET_DEVICE_NUMBER Error: %ld\n", GetLastError());
        (void)CloseHandle(hDevice);
        return (DWORD)-1;
    }
    printf("%d %d %d\n\n", number.DeviceType, number.DeviceNumber, number.PartitionNumber);
 
    (void)CloseHandle(hDevice);
    return number.DeviceNumber;
}


int _tmain(int argc, _TCHAR* argv[])
{
	GetPhysicalDriveFromPartitionLetter('c');	
	getchar();
	return 0;
}

 

运行结果如下 (注意,运行时需要管理员的权限)

lt2phy

其中的 7 是 FILE_DEVICE_DISK, 0 表示 PhysicalDrive0 ,2 表示这个硬盘上有2个分区。

GetPD

参考:

1.cutebunny 的BLOG “windows的磁盘操作” 可以在这里下载 WindowsDisk
2.http://msdn.microsoft.com/en-us/library/windows/desktop/bb968800(v=vs.85).aspx IOCTL_STORAGE_GET_DEVICE_NUMBER control code
3.http://msdn.microsoft.com/en-us/library/windows/desktop/bb968801(v=vs.85).aspx STORAGE_DEVICE_NUMBER structure

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