78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/**********************************************************************
|
|
* Copyright (c) 2013-2014 Red Hat, Inc.
|
|
*
|
|
* Developed by Daynix Computing LTD.
|
|
*
|
|
* Authors:
|
|
* Dmitry Fleytman <dmitry@daynix.com>
|
|
* Pavel Gurvich <pavel@daynix.com>
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
**********************************************************************/
|
|
|
|
#include "stdafx.h"
|
|
#include "FilterStrategy.h"
|
|
#include "trace.h"
|
|
#include "FilterStrategy.tmh"
|
|
#include "FilterDevice.h"
|
|
#include "ControlDevice.h"
|
|
#include "WdfRequest.h"
|
|
|
|
NTSTATUS CUsbDkFilterStrategy::PNPPreProcess(PIRP Irp)
|
|
{
|
|
IoSkipCurrentIrpStackLocation(Irp);
|
|
return WdfDeviceWdmDispatchPreprocessedIrp(m_Owner->WdfObject(), Irp);
|
|
}
|
|
|
|
void CUsbDkFilterStrategy::ForwardRequest(WDFREQUEST Request)
|
|
{
|
|
CWdfRequest WdfRequest(Request);
|
|
|
|
auto status = WdfRequest.SendAndForget(m_Owner->IOTarget());
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
TraceEvents(TRACE_LEVEL_ERROR, TRACE_FILTERSTRATEGY, "%!FUNC! failed %!STATUS!", status);
|
|
}
|
|
}
|
|
|
|
void CUsbDkFilterStrategy::IoInCallerContext(WDFDEVICE Device, WDFREQUEST Request)
|
|
{
|
|
auto status = WdfDeviceEnqueueRequest(Device, Request);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
TraceEvents(TRACE_LEVEL_ERROR, TRACE_FILTERSTRATEGY, "%!FUNC! failed to enqueue request: %!STATUS!", status);
|
|
WdfRequestComplete(Request, status);
|
|
}
|
|
}
|
|
|
|
NTSTATUS CUsbDkFilterStrategy::Create(CUsbDkFilterDevice *Owner)
|
|
{
|
|
m_Owner = Owner;
|
|
|
|
m_ControlDevice = CUsbDkControlDevice::Reference(Owner->GetDriverHandle());
|
|
if (m_ControlDevice == nullptr)
|
|
{
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
void CUsbDkFilterStrategy::Delete()
|
|
{
|
|
if (m_ControlDevice != nullptr)
|
|
{
|
|
CUsbDkControlDevice::Release();
|
|
}
|
|
}
|