IMG_UINT32 DBGDIOCDrivReadString(IMG_VOID * pvInBuffer, IMG_VOID * pvOutBuffer)
{
IMG_UINT32 * pui32OutLen;
PDBG_IN_READSTRING psParams;
psParams = (PDBG_IN_READSTRING) pvInBuffer;
pui32OutLen = (IMG_UINT32 *) pvOutBuffer;
*pui32OutLen = ExtDBGDrivReadString(psParams->pvStream,psParams->pszString,psParams->ui32StringLen);
return(IMG_TRUE);
}
/*****************************************************************************
FUNCTION : DBGDrivReadString
PURPOSE :
PARAMETERS :
RETURNS :
*****************************************************************************/
static IMG_UINT32 DBGDIOCDrivReadString(IMG_VOID * pvInBuffer, IMG_VOID * pvOutBuffer)
{
IMG_UINT32 * pui32OutLen;
PDBG_IN_READSTRING psParams;
PDBG_STREAM psStream;
IMG_CHAR *pcReadBuffer;
#ifdef UNDER_WDDM
IMG_CHAR *pcClientBuffer;
#endif
psParams = (PDBG_IN_READSTRING) pvInBuffer;
pui32OutLen = (IMG_UINT32 *) pvOutBuffer;
#ifdef UNDER_WDDM
/* WDDM DbgDriv operates at DISPATCH level so it cannot write directly
* to pdump.exe's userspace buffer
*/
pcReadBuffer = HostNonPageablePageAlloc(
(psParams->ui32StringLen + HOST_PAGESIZE - 1) / HOST_PAGESIZE);
pcClientBuffer = psParams->u.pszString;
#else
pcReadBuffer = psParams->u.pszString;
#endif
psStream = SID2PStream(psParams->hStream);
if (psStream != (PDBG_STREAM)IMG_NULL)
{
*pui32OutLen = ExtDBGDrivReadString(psStream,
pcReadBuffer, psParams->ui32StringLen);
#ifdef UNDER_WDDM
if(*pui32OutLen > 0)
{
HostMemCopy(pcClientBuffer, pcReadBuffer, *pui32OutLen);
}
HostNonPageablePageFree(pcReadBuffer);
#endif
return(IMG_TRUE);
}
else
{
/* invalid SID */
*pui32OutLen = 0;
return(IMG_FALSE);
}
}
/*****************************************************************************
FUNCTION : DBGDrivReadString
PURPOSE :
PARAMETERS :
RETURNS :
*****************************************************************************/
static IMG_UINT32 DBGDIOCDrivReadString(IMG_VOID * pvInBuffer, IMG_VOID * pvOutBuffer)
{
IMG_UINT32 * pui32OutLen;
PDBG_IN_READSTRING psParams;
PDBG_STREAM psStream;
psParams = (PDBG_IN_READSTRING) pvInBuffer;
pui32OutLen = (IMG_UINT32 *) pvOutBuffer;
psStream = SID2PStream(psParams->hStream);
if (psStream != (PDBG_STREAM)IMG_NULL)
{
*pui32OutLen = ExtDBGDrivReadString(psStream,
psParams->u.pszString,psParams->ui32StringLen);
return(IMG_TRUE);
}
else
{
/* invalid SID */
*pui32OutLen = 0;
return(IMG_FALSE);
}
}
