读cf,sd卡的问题

yangjie050322

读cf,sd卡的问题 [复制链接]

我想读取各种存储卡的serial number，代码如下：
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#include "stdafx.h"
#include "windows.h"
#include "winioctl.h"

// retrieve the properties of a storage device or adapter.
typedef struct _STORAGE_DEVICE_DESCRIPTOR {  ULONG  Version;  ULONG  Size;  UCHAR  DeviceType;  UCHAR  DeviceTypeModifier;  BOOLEAN  RemovableMedia;  
BOOLEAN  CommandQueueing;  ULONG  VendorIdOffset;  ULONG  ProductIdOffset;  ULONG  ProductRevisionOffset;  ULONG  SerialNumberOffset;  STORAGE_BUS_TYPE  BusType;  
ULONG  RawPropertiesLength;  UCHAR  RawDeviceProperties[1];} STORAGE_DEVICE_DESCRIPTOR, *PSTORAGE_DEVICE_DESCRIPTOR;

typedef enum _STORAGE_QUERY_TYPE {

PropertyStandardQuery = 0,

PropertyExistsQuery,

PropertyMaskQuery,

PropertyQueryMaxDefined

} STORAGE_QUERY_TYPE, *PSTORAGE_QUERY_TYPE;

// retrieve the properties of a storage device or adapter.

typedef enum _STORAGE_PROPERTY_ID {

StorageDeviceProperty = 0,

StorageAdapterProperty,

StorageDeviceIdProperty

} STORAGE_PROPERTY_ID, *PSTORAGE_PROPERTY_ID;

// retrieve the properties of a storage device or adapter.

typedef struct _STORAGE_PROPERTY_QUERY {

STORAGE_PROPERTY_ID PropertyId;

STORAGE_QUERY_TYPE QueryType;

UCHAR AdditionalParameters[1];

} STORAGE_PROPERTY_QUERY, *PSTORAGE_PROPERTY_QUERY;



int _tmain(int argc, _TCHAR* argv[])
{
       
         HANDLE hnd;
     STORAGE_PROPERTY_QUERY  Query;
         PSTORAGE_DEVICE_DESCRIPTOR pDevDesc;
     
     DWORD dwOutBytes;
         char tzCFCardID[20];
     hnd = CreateFile("\\\\.\\g:", GENERIC_READ|GENERIC_WRITE,
         FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);

         Query.PropertyId = StorageDeviceProperty;
     Query.QueryType = PropertyStandardQuery;
     
         pDevDesc=(STORAGE_DEVICE_DESCRIPTOR *)LocalAlloc(LMEM_ZEROINIT,3000);
     
         if(!DeviceIoControl(hnd, CTL_CODE(IOCTL_STORAGE_BASE, 0x0500, METHOD_BUFFERED, FILE_ANY_ACCESS), // info of device property
                 &Query, sizeof(STORAGE_PROPERTY_QUERY), // input data buffer
                 (LPVOID)pDevDesc, pDevDesc->Size, // output data buffer
                 &dwOutBytes, // out's length
                (LPOVERLAPPED)NULL))
         {
         sprintf(tzCFCardID, "ERRORID:%lu", GetLastError());
                 printf("%s\n",tzCFCardID);
     }

     
         printf("serial number offset:%lu\n",pDevDesc->SerialNumberOffset);
     LocalFree(pDevDesc);
         CloseHandle(hnd);

       
       
        return 0;
}
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但是pDevDesc->SerialNumberOffset的值总是0，能帮下我吗？
谢谢！

esvive

不是很明白你的程序