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/**********************************************************************
* 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.
*
**********************************************************************/
#pragma once
#include "Alloc.h"
#include "UsbDkUtil.h"
class CIrpBase : public CAllocatable<NonPagedPool, 'RIHR'>
{
public:
template<typename ConfiguratorT>
void Configure(ConfiguratorT Configurator)
{ Configurator(IoGetNextIrpStackLocation(m_Irp)); }
protected:
CIrpBase()
{}
CIrpBase(const CIrpBase&) = delete;
CIrpBase& operator= (const CIrpBase&) = delete;
PIRP m_Irp = nullptr;
PDEVICE_OBJECT m_TargetDevice = nullptr;
};
class CIrp : public CIrpBase
{
public:
CIrp() {};
~CIrp();
NTSTATUS Create(PDEVICE_OBJECT TargetDevice);
void Destroy();
NTSTATUS SendSynchronously()
{ return ForwardAndWait(m_Irp, m_TargetDevice); }
static NTSTATUS ForwardAndWait(PIRP Irp, PDEVICE_OBJECT Target)
{ return ForwardAndWait(Irp, [Irp, Target](){ return IoCallDriver(Target, Irp); }); }
template<typename SendFuncT>
static NTSTATUS ForwardAndWait(PIRP Irp, SendFuncT SendFunc)
{
VERIFY_IS_IRQL_PASSIVE_LEVEL(); // because of wait
CWdmEvent Event;
IoSetCompletionRoutine(Irp,
[](PDEVICE_OBJECT, PIRP Irp, PVOID Context) -> NTSTATUS
{
if (Irp->PendingReturned)
{
static_cast<CWdmEvent *>(Context)->Set();
}
return STATUS_MORE_PROCESSING_REQUIRED;
},
&Event,
TRUE, TRUE, TRUE);
auto status = SendFunc();
if (status == STATUS_PENDING)
{
Event.Wait();
return Irp->IoStatus.Status;
}
return status;
}
template<typename ReaderT>
void ReadResult(ReaderT Reader)
{ Reader(m_Irp->IoStatus.Information); }
CIrp(const CIrp&) = delete;
CIrp& operator= (const CIrp&) = delete;
private:
void DestroyIrp();
void ReleaseTarget();
};
class CIoControlIrp : public CIrpBase
{
public:
CIoControlIrp() {}
~CIoControlIrp();
NTSTATUS Create(PDEVICE_OBJECT TargetDevice,
ULONG IoControlCode,
bool IsInternal = true,
PVOID InputBuffer = nullptr,
ULONG InputBufferLength = 0,
PVOID OutputBuffer = nullptr,
ULONG OutputBufferLength = 0);
void Destroy();
NTSTATUS SendSynchronously();
CIoControlIrp(const CIoControlIrp&) = delete;
CIoControlIrp& operator= (const CIoControlIrp&) = delete;
private:
CWdmEvent m_Event;
IO_STATUS_BLOCK m_IoControlStatus;
};
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