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            若我的小家

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            用DeviceIoControl獲取系統磁盤信息

            Posted on 2008-09-23 13:19 若我 閱讀(4791) 評論(0)  編輯 收藏 引用

            代碼:
            #include <iostream>
            #include <windows.h>
            using namespace std;

            int main()
            {
             SECURITY_ATTRIBUTES secStru;
             secStru.bInheritHandle=0;
             secStru.lpSecurityDescriptor=0;
             secStru.nLength=0; 
             HANDLE hDevice=CreateFile("\\\\.\\PhysicalDrive0",GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0,NULL);

             if(hDevice==INVALID_HANDLE_VALUE)
             {
              return -1;
             }

             //DWORD outBuff[1000];
             GET_LENGTH_INFORMATION infoStruct;

             memset(&infoStruct,0,sizeof(infoStruct));
             DWORD bytesReturned;
             if(DeviceIoControl(hDevice,IOCTL_DISK_GET_LENGTH_INFO,NULL,0,&infoStruct,sizeof(infoStruct),&bytesReturned,NULL)==0)
             {
              cout<<"Failed to get disk information."<<endl;
              DWORD error;
              error=GetLastError();
              HRESULT hRe=HRESULT_FROM_WIN32(error);
              char errorData[10];
              sprintf(errorData,"%x",hRe);
              cout<<"Error code:"<</*hRe*/errorData<<endl;
              CloseHandle(hDevice);
              return -1;
             }

             DISK_GEOMETRY_EX geoStruct;
             memset(&geoStruct,0,sizeof(geoStruct));
             if(DeviceIoControl(hDevice,IOCTL_DISK_GET_DRIVE_GEOMETRY_EX ,NULL,0,&geoStruct,sizeof(geoStruct),&bytesReturned,NULL)==0)
             {
              cout<<"Failed to get disk information."<<endl;
              DWORD error;
              error=GetLastError();
              HRESULT hRe=HRESULT_FROM_WIN32(error);
              char errorData[10];
              sprintf(errorData,"%x",hRe);
              cout<<"Error code:"<</*hRe*/errorData<<endl;
              CloseHandle(hDevice);
              return -1;
             }

             cout<<"The disk's size is:"<<infoStruct.Length.QuadPart/1024/1024/1024<<" G Bytes."<<endl;
             cout<<"The disk's cylinder number:"<<geoStruct.Geometry.Cylinders.QuadPart<<endl;
             cout<<"The disk's media type:"<<geoStruct.Geometry.MediaType<<endl;
             cout<<"Number of tracks per cylinder:"<<geoStruct.Geometry.TracksPerCylinder<<endl;
             cout<<"Number of sectors per track:"<<geoStruct.Geometry.SectorsPerTrack<<endl;
             cout<<"Number of bytes per sector:"<<geoStruct.Geometry.BytesPerSector<<endl;

             PDISK_PARTITION_INFO  partitionInfo=DiskGeometryGetPartition(&geoStruct);

             DRIVE_LAYOUT_INFORMATION_EX layOutInfo[20];

             memset(&layOutInfo,0,sizeof(DRIVE_LAYOUT_INFORMATION_EX)*20);

             //layOutInfo.PartitionEntry=*(new PARTITION_INFORMATION_EX[10]);

             if(DeviceIoControl(hDevice,IOCTL_DISK_GET_DRIVE_LAYOUT_EX,NULL,0,&layOutInfo,sizeof(DRIVE_LAYOUT_INFORMATION_EX)*20,&bytesReturned,NULL)==0)
             {
              cout<<"Failed to get disk information."<<endl;
              DWORD error;
              error=GetLastError();
              HRESULT hRe=HRESULT_FROM_WIN32(error);
              char errorData[10];
              sprintf(errorData,"%x",hRe);
              cout<<"Error code:"<</*hRe*/errorData<<endl;
              CloseHandle(hDevice);
              return -1;
             }

             int partitionCount=layOutInfo[0].PartitionCount;
             cout<<"Number of partitions:"<<layOutInfo[0].PartitionCount<<endl;
             cout<<"Partitions' information:"<<endl;
             for(int i=0;i<partitionCount;i++)
             {
              //PDISK_PARTITION_INFO pParInfo=partitionInfo+i*sizeof(DISK_PARTITION_INFO);
              if(layOutInfo[i].PartitionEntry[0].PartitionNumber!=0)
              {
               cout<<"Partition "<<layOutInfo[i].PartitionEntry[0].PartitionNumber<<",  partition size is "<<layOutInfo[i].PartitionEntry[0].PartitionLength.QuadPart/1024/1024/1024<<" G Bytes, partition style is "<<layOutInfo[i].PartitionEntry[0].PartitionStyle<<endl;
              }
             }

             //cout<<"The type of partition:"<<((partitionInfo.PartitionStyle==PARTITION_STYLE_MBR) ?"MBR":((partitionInfo.PartitionStyle==PARTITION_STYLE_GPT )?"GPT":((partitionInfo.PartitionStyle==PARTITION_STYLE_RAW)?"RAW":"")))<<endl;

             CloseHandle(hDevice);

             return 0;
            }

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