Question

我正在尝试调用KernelIoControl但无法在任何地方找到头文件pkfuncs.h。

我想知道： a）我需要秘密下载吗？ b）或者它不存在，因为我正在使用的设备的SDK（卡西欧）不包括这些库？

另外......大概是WINAPI？我想我只是动态链接到它。

Answer 1

您不需要标头来调用KernelIoControl。只需将其添加到您自己的应用中：

extern "C" BOOL KernelIoControl(
  DWORD dwIoControlCode,
  LPVOID lpInBuf,
  DWORD nInBufSize,
  LPVOID lpOutBuf,
  DWORD nOutBufSize,
  LPDWORD lpBytesReturned
);

链接器会为您找到它。

Answer 2

在我的搜索中，我发现this page对于获取IOCTRL_HAL_GET_DEVICEID非常有用：

它还详细说明了使用该调用所必需的DEVICE_ID结构：

#define IOCTL_HAL_GET_DEVICEID CTL_CODE(FILE_DEVICE_HAL, 21, METHOD_BUFFERED, FILE_ANY_ACCESS) 

typedef struct _DEVICE_ID { 
    DWORD dwSize; 
    DWORD dwPresetIDOffset; 
    DWORD dwPresetIDBytes; 
    DWORD dwPlatformIDOffset; 
    DWORD dwPlatformIDBytes; 
} DEVICE_ID, *PDEVICE_ID;

不一定明显的是，给定偏移量中包含的数据只是int值，最好被视为十六进制代码。

Answer 3

以下是我用来获取唯一设备ID的代码：

PDWORD      pdwTmp;
DWORD       dwUIDLen;
DWORD       dwLen;
DWORD       dwIdx;
BYTE        abData[512];
BYTE        abID[64];
PDEVICE_ID  pDvcID;

dwLen = 0;
memset(abID, 0, sizeof(abID));
memset(abData, 0, sizeof(abData));
pDvcID = (PDEVICE_ID) abData;
pDvcID->dwSize = sizeof(abData);
KernelIoControl(IOCTL_HAL_GET_DEVICEID, NULL, 0, abData, sizeof(abData), &dwLen);
// If valid data was returned build ID from both parts
if ( (dwLen >= (sizeof(*pDvcID) + 8))       // Enough bytes returned for struct and 8 ID bytes
    && (dwLen >= pDvcID->dwSize)            // Bytes returned is at least indicated struct size
    && pDvcID->dwPresetIDBytes && pDvcID->dwPlatformIDBytes     // Both ID's are present
    && (pDvcID->dwPresetIDOffset >= sizeof(*pDvcID))            // Preset ID offset is reasonable
    && (pDvcID->dwPlatformIDOffset >= sizeof(*pDvcID))          // Platform ID offset is reasonable
    && ((pDvcID->dwPresetIDOffset + pDvcID->dwPresetIDBytes)    // Preset ID is in bounds
        <= pDvcID->dwSize)
    && ((pDvcID->dwPlatformIDOffset + pDvcID->dwPlatformIDBytes)// Platform ID is in bounds
        <= pDvcID->dwSize) )
{
    // Copy as much of the Preset ID as will fit
    dwIdx = pDvcID->dwPresetIDBytes;
    if ( dwIdx > sizeof(abID) )
        dwIdx = sizeof(abID);
    if ( dwIdx )
        memcpy(abID, abData + pDvcID->dwPresetIDOffset, dwIdx);
    dwLen = dwIdx;
    // Copy as much of the Platform ID as will fit
    dwIdx = pDvcID->dwPlatformIDBytes;
    if ( dwIdx > (sizeof(abID) - dwLen) )
        dwIdx = (sizeof(abID) - dwLen);
    if ( dwIdx )
        memcpy(abID + dwLen, abData + pDvcID->dwPlatformIDOffset, dwLen);
    dwLen += dwIdx;
}

我在哪里可以获得pkfuncs.h（并访问KernelIoControl）？

3 个答案: