NTSTATUS VBoxMRxCreateSrvCall(PMRX_SRV_CALL pSrvCall, PMRX_SRVCALL_CALLBACK_CONTEXT pCallbackContext)
{
PMRX_SRVCALLDOWN_STRUCTURE SrvCalldownStructure = (PMRX_SRVCALLDOWN_STRUCTURE)(pCallbackContext->SrvCalldownStructure);
RT_NOREF(pSrvCall);
Log(("VBOXSF: MRxCreateSrvCall: %p.\n", pSrvCall));
if (IoGetCurrentProcess() == RxGetRDBSSProcess())
{
Log(("VBOXSF: MRxCreateSrvCall: Called in context of RDBSS process\n"));
vbsfExecuteCreateSrvCall(pCallbackContext);
}
else
{
NTSTATUS Status;
Log(("VBOXSF: MRxCreateSrvCall: Dispatching to worker thread\n"));
Status = RxDispatchToWorkerThread(VBoxMRxDeviceObject, DelayedWorkQueue,
(PWORKER_THREAD_ROUTINE)vbsfExecuteCreateSrvCall,
pCallbackContext);
if (Status == STATUS_SUCCESS)
Log(("VBOXSF: MRxCreateSrvCall: queued\n"));
else
{
pCallbackContext->Status = Status;
SrvCalldownStructure->CallBack(pCallbackContext);
}
}
/* RDBSS expect this. */
return STATUS_PENDING;
}
NTSTATUS VBoxMRxRead(IN PRX_CONTEXT RxContext)
{
NTSTATUS Status = RxDispatchToWorkerThread(VBoxMRxDeviceObject, DelayedWorkQueue,
vbsfReadWorker,
RxContext);
Log(("VBOXSF: MRxRead: RxDispatchToWorkerThread: Status 0x%08X\n", Status));
if (Status == STATUS_SUCCESS)
Status = STATUS_PENDING;
return Status;
}
NTSTATUS VBoxMRxCreateSrvCall (PMRX_SRV_CALL pSrvCall, PMRX_SRVCALL_CALLBACK_CONTEXT pCallbackContext)
/*++
Routine Description:
This routine patches the RDBSS created srv call instance with the information required
by the mini redirector.
Arguments:
RxContext - Supplies the context of the original create/ioctl
CallBackContext - the call back context in RDBSS for continuation.
Return Value:
RXSTATUS - The return status for the operation
--*/
{
NTSTATUS Status;
PMRX_SRVCALLDOWN_STRUCTURE SrvCalldownStructure = (PMRX_SRVCALLDOWN_STRUCTURE)(pCallbackContext->SrvCalldownStructure);
Assert(pSrvCall);
Assert(NodeType(pSrvCall) == RDBSS_NTC_SRVCALL);
Log(("VBOXSF: VBoxMRxCreateSrvCall: Called %p.\n", pSrvCall));
//
// If this request was made on behalf of the RDBSS, do ExecuteCreatSrvCall
// immediately. If the request was made from somewhere else, create a work item
// and place it on a queue for a worker thread to process later. This distinction
// is made to simplify transport handle management.
//
if (IoGetCurrentProcess() == RxGetRDBSSProcess())
{
Log(("VBOXSF: VBoxMRxCreateSrvCall: Called in context of RDBSS process\n"));
//
// Peform the processing immediately because RDBSS is the initiator of this
// request
//
ExecuteCreateSrvCall(pCallbackContext);
}
else
{
Log(("VBOXSF: VBoxMRxCreateSrvCall: Dispatching to worker thread\n"));
//
// Dispatch the request to a worker thread because the redirected drive
// buffering sub-system (RDBSS) was not the initiator
//
Status = RxDispatchToWorkerThread(VBoxMRxDeviceObject, DelayedWorkQueue, (PWORKER_THREAD_ROUTINE)ExecuteCreateSrvCall, /* explicit cast for first parameter type */
pCallbackContext);
if (Status == STATUS_SUCCESS)
{
Log(("VBOXSF: VBoxMRxCreateSrvCall: queued!\n"));
}
else
{
pCallbackContext->Status = Status;
SrvCalldownStructure->CallBack(pCallbackContext);
}
}
//
// The wrapper expects PENDING.
//
return STATUS_PENDING;
}
