一个初始驱动化函数

来源：互联网发布：录音剪辑软件编辑：程序博客网时间：2024/05/16 15:16

DWORD TDriver::InitDriver(LPCTSTR path)
{
    if(initialized)
    {
        if(UnloadDriver()!=DRV_SUCCESS)
         return DRV_ERROR_ALREADY_INITIALIZED;
    }

    driverPath=(LPTSTR)malloc(strlen(path)+1);
    if(driverPath==NULL)
      return DRV_ERROR_MEMORY;

    strcpy(driverPath,path);
    LPTSTR sPos1=strrchr(driverPath,(int)'\\');

    if(sPos1==NULL)
        sPos1=driverPath;
    LPTSTR sPos2=strrchr(sPos1,(int)'.');

if(sPos2==NULL||sPos1>sPos2)
{

free(driverPath);
driverPath=NULL;

return DRV_ERROR_INVALID_PATH_OR_FILE;
}

driverName=(LPTSTR)malloc(sPos2-sPos1);

if(driverName==NULL)
{

        free(driverPath);
        driverPath=NULL;
        return DRV_ERROE_MEMORY;
    }

memcpy(driverName,sPos1+1,sPos2-sPos1-1);

driverName[sPos2-sPos1-1]=0;
driverDosName=(LPTSTR)malloc(strlen(driverName)+5);

    if(driverDosName==NULL)
    {
        free(driverPath);
        driverPath=NULL;
        free(driverName);
        driverName=NULL;
        return DRV_ERROR_MEMORY;
    }

    sprintf(driverDosName,"\\\\.\\%s",driverName);
    initialized=TRUE;
    return DRV_SUCCESS;
}

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