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windows-nt/Source/XPSP1/NT/termsrv/drivers/td/common/stack.c

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2020-09-26 03:20:57 -05:00
/*************************************************************************
*
* stack.c
*
* ICA STACK IOCTLS
*
* Copyright Microsoft, 1998
*
*
*************************************************************************/
/*
* Includes
*/
#include <ntddk.h>
#include <ntddvdeo.h>
#include <ntddkbd.h>
#include <ntddmou.h>
#include <ntddbeep.h>
#include <winstaw.h>
#include <icadd.h>
#include <sdapi.h>
#include <td.h>
/*=============================================================================
== External procedures defined
=============================================================================*/
NTSTATUS StackCreateEndpoint( PTD, PSD_IOCTL );
NTSTATUS StackCdCreateEndpoint( PTD, PSD_IOCTL );
NTSTATUS StackCallbackInitiate( PTD, PSD_IOCTL );
NTSTATUS StackCallbackComplete( PTD, PSD_IOCTL );
NTSTATUS StackOpenEndpoint( PTD, PSD_IOCTL );
NTSTATUS StackCloseEndpoint( PTD, PSD_IOCTL );
NTSTATUS StackConnectionWait( PTD, PSD_IOCTL );
NTSTATUS StackConnectionSend( PTD, PSD_IOCTL );
NTSTATUS StackConnectionRequest( PTD, PSD_IOCTL );
NTSTATUS StackQueryParams( PTD, PSD_IOCTL );
NTSTATUS StackSetParams( PTD, PSD_IOCTL );
NTSTATUS StackQueryLastError( PTD, PSD_IOCTL );
NTSTATUS StackWaitForStatus( PTD, PSD_IOCTL );
NTSTATUS StackCancelIo( PTD, PSD_IOCTL );
NTSTATUS StackQueryRemoteAddress( PTD, PSD_IOCTL );
/*=============================================================================
== Internal procedures defined
=============================================================================*/
NTSTATUS _TdCreateInputThread( PTD );
/*=============================================================================
== Procedures used
=============================================================================*/
NTSTATUS DeviceCreateEndpoint( PTD, PICA_STACK_ADDRESS, PICA_STACK_ADDRESS );
NTSTATUS DeviceOpenEndpoint( PTD, PVOID, ULONG );
NTSTATUS DeviceCloseEndpoint( PTD );
NTSTATUS DeviceConnectionWait( PTD, PVOID, ULONG, PULONG );
NTSTATUS DeviceConnectionSend( PTD );
NTSTATUS DeviceConnectionRequest( PTD, PICA_STACK_ADDRESS, PVOID, ULONG, PULONG );
NTSTATUS DeviceGetLastError( PTD, PICA_STACK_LAST_ERROR );
NTSTATUS DeviceWaitForStatus( PTD );
NTSTATUS DeviceCancelIo( PTD );
NTSTATUS DeviceSetParams( PTD );
NTSTATUS DeviceIoctl( PTD, PSD_IOCTL );
NTSTATUS DeviceQueryRemoteAddress( PTD, PVOID, ULONG, PVOID, ULONG, PULONG );
NTSTATUS TdInputThread( PTD );
NTSTATUS TdSyncWrite( PTD, PSD_SYNCWRITE );
/*******************************************************************************
*
* StackCreateEndpoint IOCTL_ICA_STACK_CREATE_ENDPOINT
*
* Create new transport endpoint
*
* The endpoint structure contains everything necessary to preserve
* a client connection across a transport driver unload and reload.
*
* This routine creates a new endpoint, using the optional local address.
* In the case of a network connection, the actual endpoint cannot be
* created until the client connection is established. What this routine
* creates is an endpoint to listen on.
*
* DeviceConnectionWait and DeviceConnectionRequest return the endpoint.
*
* NOTE: The endpoint structure is an opaque, variable length data
* structure whose length and contents are determined by the
* transport driver.
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - ICA_STACK_ADDRESS (or NULL)
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackCreateEndpoint( PTD pTd, PSD_IOCTL pSdIoctl )
{
PICA_STACK_ADDRESS pAddressIn;
PICA_STACK_ADDRESS pAddressOut;
NTSTATUS Status;
if ( pSdIoctl->InputBufferLength < sizeof(ICA_STACK_ADDRESS) ) {
/*
* No address specified
*/
pAddressIn = NULL;
} else {
/*
* Get local address to use, if any
*/
pAddressIn = pSdIoctl->InputBuffer;
}
if ( pSdIoctl->OutputBufferLength < sizeof(ICA_STACK_ADDRESS) ) {
/*
* No address specified
*/
pAddressOut = NULL;
} else {
/*
* Get local address to use, if any
*/
pAddressOut = pSdIoctl->OutputBuffer;
}
/*
* Initialize transport driver endpoint
*/
Status = DeviceCreateEndpoint( pTd, pAddressIn, pAddressOut );
if ( !NT_SUCCESS(Status) )
goto badcreate;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackCreateEndpoint: %x, success\n", pAddressIn ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* endpoint create failed
*/
badcreate:
TRACE(( pTd->pContext, TC_TD, TT_ERROR, "TD: StackCreateEndpoint: %x, Status=0x%x\n", pAddressIn, Status ));
return( Status );
}
/*******************************************************************************
*
* StackCdCreateEndpoint IOCTL_ICA_STACK_CD_CREATE_ENDPOINT
*
* Create an endpoint based on a data provided by a connection driver.
*
* NOTE: The endpoint structure is an opaque, variable length data
* structure whose length and contents are determined by the
* transport driver.
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - <endpoint data)
* output - <endpoint data>
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackCdCreateEndpoint( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
TRACE(( pTd->pContext, TC_TD, TT_API1,
"TD: StackCdCreateEndpoint: entry\n" ));
pTd->fClosing = FALSE;
/*
* Initialize transport driver endpoint
*/
Status = DeviceIoctl( pTd, pSdIoctl );
if ( !NT_SUCCESS(Status) )
goto badopen;
TRACE(( pTd->pContext, TC_TD, TT_API1,
"TD: StackCdCreateEndpoint: success\n" ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* endpoint open failed
*/
badopen:
TRACE(( pTd->pContext, TC_TD, TT_ERROR,
"TD: StackCdCreateEndpoint: Status=0x%x\n",
Status ));
return( Status );
}
/*******************************************************************************
*
* StackCallbackInitiate IOCTL_ICA_STACK_CALLBACK_INITIATE
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - ICA_STACK_CALLBACK
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackCallbackInitiate( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
TRACE(( pTd->pContext, TC_TD, TT_API1,
"TD: StackCallbackInitiate: entry\n" ));
pTd->fCallbackInProgress = TRUE;
return( STATUS_SUCCESS );
}
/*******************************************************************************
*
* StackCallbackComplete IOCTL_ICA_STACK_CALLBACK_COMPLETE
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackCallbackComplete( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
TRACE(( pTd->pContext, TC_TD, TT_API1,
"TD: StackCallbackComplete: entry\n" ));
pTd->fCallbackInProgress = FALSE;
/*
* Create the input thread if one is not running.
*/
if ( pTd->pInputThread ) {
Status = IcaWaitForSingleObject( pTd->pContext,
pTd->pInputThread, 0 );
if ( Status != STATUS_TIMEOUT) { // if input thread not running
/*
* The old input thread has gone away, but hasn't
* been cleaned up. Clean it up now.
*/
ObDereferenceObject( pTd->pInputThread );
pTd->pInputThread = NULL;
}
}
if ( !pTd->pInputThread ) {
Status = _TdCreateInputThread( pTd );
if ( !NT_SUCCESS(Status) )
goto badthreadcreate;
}
return( STATUS_SUCCESS );
badthreadcreate:
return( Status );
}
/*******************************************************************************
*
* StackOpenEndpoint IOCTL_ICA_STACK_OPEN_ENDPOINT
*
* Open an existing transport endpoint
*
* The endpoint structure contains everything necessary to preserve
* a client connection across a transport driver unload and reload.
*
* This routine will bind to an existing endpoint which is passed as
* the input parameter.
*
* NOTE: The endpoint structure is an opaque, variable length data
* structure whose length and contents are determined by the
* transport driver.
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - <endpoint data>
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackOpenEndpoint( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
/*
* Initialize transport driver endpoint
*/
Status = DeviceOpenEndpoint( pTd,
pSdIoctl->InputBuffer,
pSdIoctl->InputBufferLength );
if ( !NT_SUCCESS(Status) )
goto badopen;
/*
* Create the input thread now.
*/
Status = _TdCreateInputThread( pTd );
if ( !NT_SUCCESS(Status) )
goto badthreadcreate;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackOpenEndpoint, success\n" ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* thread create failed - we used to close the endpoint, however TermSrv
* does not expect this and would do a double free. Now we just rely on
* TermSrv to turn around and close the endpoint.
*/
badthreadcreate:
// (void) DeviceCloseEndpoint( pTd );
/*
* endpoint open failed
*/
badopen:
TRACE(( pTd->pContext, TC_TD, TT_ERROR, "TD: StackOpenEndpoint, Status=0x%x\n", Status ));
return( Status );
}
/*******************************************************************************
*
* StackCloseEndpoint IOCTL_ICA_STACK_CLOSE_ENDPOINT
*
* Close transport endpoint
*
* This will terminate any client connection
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackCloseEndpoint( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
/*
* Close transport driver endpoint
*/
Status = DeviceCloseEndpoint( pTd );
if ( !NT_SUCCESS(Status) )
goto badclose;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackCloseEndpoint: success\n" ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* endpoint close failed
*/
badclose:
TRACE(( pTd->pContext, TC_TD, TT_ERROR, "TD: StackCloseEndpoint: 0x%x\n", Status ));
return( Status );
}
/*******************************************************************************
*
* StackConnectionWait IOCTL_ICA_STACK_CONNECTION_WAIT
*
* Waits for a new client connection
*
* After the transport driver is loaded and StackCreateEndpoint is called
* this routine is called to wait for a new client connection.
*
* If an endpoint does not yet exist, DeviceConnectionWait will create one
* when the client connects.
*
* Changed 02/18/97 JohnR:
*
* This routine returns an opaque 32 bit handle to a data structure that
* is maintained by ICADD.SYS. This data structure allows the transport
* driver to maintain specific state information in a secure manner.
*
* This state information is only known to the transport driver.
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - <endpoint data>
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackConnectionWait( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackConnectionWait: enter\n" ));
/*
* Initialize return byte count
* - size of returned endpoint structure
*/
pSdIoctl->BytesReturned = 0;
/*
* Wait for physical connection
*
* - DeviceConnectionWait should check OutputBufferLength to make
* sure it's long enough to return an endpoint structure before
* blocking.
*/
Status = DeviceConnectionWait( pTd,
pSdIoctl->OutputBuffer,
pSdIoctl->OutputBufferLength,
&pSdIoctl->BytesReturned );
if ( !NT_SUCCESS(Status) )
goto badwait;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackConnectionWait: success\n" ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* thread create failed
* Wait failed
*/
badwait:
TRACE(( pTd->pContext, TC_TD, TT_ERROR, "TD: StackConnectionWait: Status=0x%x\n", Status ));
return( Status );
}
/*******************************************************************************
*
* StackConnectionSend IOCTL_ICA_STACK_CONNECTION_SEND
*
* Initialize transport driver module data to send to the client
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackConnectionSend( PTD pTd, PSD_IOCTL pSdIoctl )
{
return( DeviceConnectionSend( pTd ) );
}
/*******************************************************************************
*
* StackConnectionRequest IOCTL_ICA_STACK_CONNECTION_REQUEST
*
* Initiate a connection to the specified remote address
*
* - this routine is only used by shadow
*
* DeviceConnectionRequest will create a new endpoint after establishing
* a connection.
*
* This routine returns the endpoint data structure. The endpoint structure
* contains everything necessary to preserve a connection across a transport
* driver unload and reload.
*
* NOTE: The endpoint structure is an opaque, variable length data
* structure whose length and contents are determined by the
* transport driver.
*
*
* typedef struct _ICA_STACK_ADDRESS {
* BYTE Address[MAX_BR_ADDRESS]; // bytes 0,1 family, 2-n address
* } ICA_STACK_ADDRESS, *PICA_STACK_ADDRESS;
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - ICA_STACK_ADDRESS (remote address)
* output - <endpoint data>
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackConnectionRequest( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
if ( pSdIoctl->InputBufferLength < sizeof(ICA_STACK_ADDRESS) ) {
Status = STATUS_BUFFER_TOO_SMALL;
goto badbuffer;
}
/*
* Establish physical connection
*
* - DeviceConnectionRequest should check OutputBufferLength to make
* sure it is long enough to return an endpoint structure before
* making a connection.
*/
Status = DeviceConnectionRequest( pTd,
pSdIoctl->InputBuffer,
pSdIoctl->OutputBuffer,
pSdIoctl->OutputBufferLength,
&pSdIoctl->BytesReturned );
if ( !NT_SUCCESS(Status) )
goto badrequest;
/*
* Create input thread
*/
Status = _TdCreateInputThread( pTd );
if ( !NT_SUCCESS(Status) )
goto badthreadcreate;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackConnectionRequest: success\n" ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* thread create failed
* connection request failed
* buffer too small
*/
badthreadcreate:
badrequest:
badbuffer:
TRACE(( pTd->pContext, TC_TD, TT_ERROR, "TD: StackConnectionRequest: Status=0x%x\n", Status ));
return( Status );
}
/*******************************************************************************
*
* StackQueryParams IOCTL_ICA_STACK_QUERY_PARAMS
*
* query transport driver parameters
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - SDCLASS
* output - PDPARAMS
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackQueryParams( PTD pTd, PSD_IOCTL pSdIoctl )
{
PPDPARAMS pParams;
if ( pSdIoctl->InputBufferLength < sizeof(SDCLASS) ||
pSdIoctl->OutputBufferLength < sizeof(PDPARAMS) ) {
return( STATUS_BUFFER_TOO_SMALL );
}
pParams = pSdIoctl->OutputBuffer;
*pParams = pTd->Params;
pSdIoctl->BytesReturned = sizeof(PDPARAMS);
return( STATUS_SUCCESS );
}
/*******************************************************************************
*
* StackQueryRemoteAddress IOCTL_TS_STACK_QUERY_REMOTEADDRESS
*
* query for the remote address
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - endpoint data
* output - sockaddr
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackQueryRemoteAddress( PTD pTd, PSD_IOCTL pSdIoctl )
{
NTSTATUS Status;
Status = DeviceQueryRemoteAddress( pTd,
pSdIoctl->InputBuffer,
pSdIoctl->InputBufferLength,
pSdIoctl->OutputBuffer,
pSdIoctl->OutputBufferLength,
&pSdIoctl->BytesReturned );
if ( !NT_SUCCESS(Status) )
{
TRACE(( pTd->pContext, TC_TD, TT_ERROR, "TD: StackQueryRemoteAddress: 0x%\n", Status ));
}
return Status;
}
/*******************************************************************************
*
* StackSetParams IOCTL_ICA_STACK_SET_PARAMS
*
* set transport driver parameters
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - PDPARAMS
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackSetParams( PTD pTd, PSD_IOCTL pSdIoctl )
{
PPDPARAMS pParams;
if ( pSdIoctl->InputBufferLength < sizeof(PDPARAMS) ) {
return( STATUS_BUFFER_TOO_SMALL );
}
pParams = pSdIoctl->InputBuffer;
pTd->Params = *pParams;
return( DeviceSetParams( pTd ) );
}
/*******************************************************************************
*
* StackQueryLastError IOCTL_ICA_STACK_QUERY_LAST_ERROR
*
* Query transport driver error code and message
*
* typedef struct _ICA_STACK_LAST_ERROR {
* ULONG Error;
* CHAR Message[ MAX_ERRORMESSAGE ];
* } ICA_STACK_LAST_ERROR, *PICA_STACK_LAST_ERROR;
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - ICA_STACK_LAST_ERROR
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackQueryLastError( PTD pTd, PSD_IOCTL pSdIoctl )
{
if ( pSdIoctl->OutputBufferLength < sizeof(ICA_STACK_LAST_ERROR) ) {
return( STATUS_BUFFER_TOO_SMALL );
}
pSdIoctl->BytesReturned = sizeof(ICA_STACK_LAST_ERROR);
return( DeviceGetLastError( pTd, pSdIoctl->OutputBuffer ) );
}
/*******************************************************************************
*
* StackWaitForStatus IOCTL_ICA_STACK_WAIT_FOR_STATUS
*
* Wait for transport driver status to change
* - only supported by async transport driver to wait for rs232 signal change
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackWaitForStatus( PTD pTd, PSD_IOCTL pSdIoctl )
{
/*
* Check if driver is being closed
*/
if ( pTd->fClosing )
return( STATUS_CTX_CLOSE_PENDING );
return( DeviceWaitForStatus( pTd ) );
}
/*******************************************************************************
*
* StackCancelIo IOCTL_ICA_STACK_CANCEL_IO
*
* cancel all current and future transport driver i/o
*
* NOTE: no more i/o can be done after StackCancelIo is called.
* The transport driver must be unloaded and reloaded to
* re-enable i/o.
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - nothing
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackCancelIo( PTD pTd, PSD_IOCTL pSdIoctl )
{
PLIST_ENTRY Head, Next;
NTSTATUS Status;
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackCancelIo (enter)\n" ));
/*
* Set stack closing flag
*/
pTd->fClosing = TRUE;
/*
* Clear error thresholds now
*/
pTd->ReadErrorThreshold = 0;
pTd->WriteErrorThreshold = 0;
/*
* Call device specific cancel I/O routine
*/
Status = DeviceCancelIo( pTd );
ASSERT( Status == STATUS_SUCCESS );
/*
* Wait for all writes to complete
*/
Status = TdSyncWrite( pTd, NULL );
ASSERT( Status == STATUS_SUCCESS );
TRACE(( pTd->pContext, TC_TD, TT_API1, "TD: StackCancelIo, %u (exit)\n", Status ));
return( Status );
}
/*******************************************************************************
*
* StackSetBrokenReason IOCTL_ICA_STACK_SET_BROKENREASON
*
* Store a broken reason for later use (when reporting back up the stack)
*
* NOTE: Does not break the connection
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
* pSdIoctl (input/output)
* input - ICA_STACK_BROKENREASON
* output - nothing
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
StackSetBrokenReason( PTD pTd, PSD_IOCTL pSdIoctl )
{
PICA_STACK_BROKENREASON pBrkReason;
TRACE(( pTd->pContext, TC_TD, TT_API1,
"TD: StackSetBrokenReason (enter)\n" ));
if ( pSdIoctl->InputBufferLength < sizeof(ICA_STACK_BROKENREASON) ) {
return( STATUS_BUFFER_TOO_SMALL );
}
pBrkReason = pSdIoctl->InputBuffer;
pTd->UserBrokenReason = pBrkReason->BrokenReason;
TRACE(( pTd->pContext, TC_TD, TT_API1,
"TD: StackSetBrokenReason, %u (exit)\n", STATUS_SUCCESS ));
return STATUS_SUCCESS;
}
/*******************************************************************************
*
* _TdCreateInputThread
*
* Start the input thread running.
*
*
* ENTRY:
* pTd (input)
* Pointer to td data structure
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
_TdCreateInputThread( PTD pTd )
{
HANDLE hInputThread;
NTSTATUS Status;
/*
* Create input thread
*/
Status = IcaCreateThread( pTd->pContext,
TdInputThread,
pTd,
ICALOCK_DRIVER,
&hInputThread );
if ( !NT_SUCCESS(Status) )
return( Status );
/*
* Convert thread handle to pointer reference
*/
Status = ObReferenceObjectByHandle( hInputThread,
THREAD_ALL_ACCESS,
NULL,
KernelMode,
&pTd->pInputThread,
NULL );
(VOID) ZwClose( hInputThread );
if ( !NT_SUCCESS( Status ) ) {
(VOID) StackCancelIo( pTd, NULL );
}
return( Status );
}
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