IRP超时

#include 
#include 
#include 
int main()
{
	HANDLE hDevice = 
		CreateFile(L"\\\\.\\HelloDDK",
					GENERIC_READ | GENERIC_WRITE,
					FILE_SHARE_READ,
					NULL,
					OPEN_EXISTING,
					FILE_ATTRIBUTE_NORMAL,
					NULL );
	if (hDevice == INVALID_HANDLE_VALUE)
	{
		printf("Open Device failed!");
		return 1;
	}
	DWORD dwRead;
	//如果读IRP没有被完成，ReadFile一直都不会退出!
	ReadFile(hDevice,NULL,0,&dwRead,NULL);
	ReadFile(hDevice,NULL,0,&dwRead,NULL);
	system("pause");
	CloseHandle(hDevice);
	return 0;
}

#pragma once
#ifdef __cplusplus
extern "C"
{
#endif
#include 
#ifdef __cplusplus
}
#endif 
#define PAGEDCODE code_seg("PAGE")
#define LOCKEDCODE code_seg()
#define INITCODE code_seg("INIT")
#define PAGEDDATA data_seg("PAGE")
#define LOCKEDDATA data_seg()
#define INITDATA data_seg("INIT")
#define arraysize(p) (sizeof(p)/sizeof((p)[0]))
typedef struct _DEVICE_EXTENSION {
	PDEVICE_OBJECT pDevice;
	UNICODE_STRING ustrDeviceName;	//设备名称
	UNICODE_STRING ustrSymLinkName;	//符号链接名
	KDPC pollingDPC;	// 存储DPC对象
	KTIMER pollingTimer;// 存储计时器对象
	PIRP currentPendingIRP;//记录当前挂起的IRP
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
// 函数声明
NTSTATUS CreateDevice (IN PDRIVER_OBJECT pDriverObject);
VOID HelloDDKUnload (IN PDRIVER_OBJECT pDriverObject);
NTSTATUS HelloDDKDispatchRoutin(IN PDEVICE_OBJECT pDevObj,IN PIRP pIrp);
NTSTATUS HelloDDKRead(IN PDEVICE_OBJECT pDevObj,IN PIRP pIrp);
NTSTATUS HelloDDKCleanUp(IN PDEVICE_OBJECT pDevObj,IN PIRP pIrp);

#include "Driver.h"
/************************************************************************
* 函数名称:DriverEntry
* 功能描述:初始化驱动程序，定位和申请硬件资源，创建内核对象
* 参数列表:
      pDriverObject:从I/O管理器中传进来的驱动对象
      pRegistryPath:驱动程序在注册表的中的路径
* 返回 值:返回初始化驱动状态
*************************************************************************/
#pragma INITCODE
extern "C" NTSTATUS DriverEntry (IN PDRIVER_OBJECT pDriverObject,IN PUNICODE_STRING pRegistryPath	) 
{
	NTSTATUS status;
	KdPrint(("Enter DriverEntry\n"));
	//设置卸载函数
	pDriverObject->DriverUnload = HelloDDKUnload;
	//设置派遣函数
	pDriverObject->MajorFunction[IRP_MJ_CREATE] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_CLOSE] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_WRITE] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_READ] = HelloDDKRead;
	pDriverObject->MajorFunction[IRP_MJ_CLEANUP] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = HelloDDKDispatchRoutin;
	pDriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = HelloDDKDispatchRoutin;
	//创建驱动设备对象
	status = CreateDevice(pDriverObject);
	KdPrint(("Leave DriverEntry\n"));
	return status;
}
#pragma LOCKEDCODE
VOID OnTimerDpc( IN PKDPC pDpc,IN PVOID pContext,IN PVOID SysArg1,IN PVOID SysArg2 ) //dpc回调函数 后3个参数 (输入输出)
{
	PDEVICE_OBJECT pDevObj = (PDEVICE_OBJECT)pContext;
	PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION)pDevObj->DeviceExtension;    //KeSetTimer 周期触发循环
	PIRP currentPendingIRP = pdx->currentPendingIRP;
	KdPrint(("Cancel the current pending irp!\n"));
	//设置完成状态为STATUS_CANCELLED
 	currentPendingIRP->IoStatus.Status = STATUS_CANCELLED;//取消
 	currentPendingIRP->IoStatus.Information = 0;	// bytes xfered
 	IoCompleteRequest( currentPendingIRP, IO_NO_INCREMENT );
	KdPrint(("取消irp完成"));
}
/************************************************************************
* 函数名称:CreateDevice
* 功能描述:初始化设备对象
* 参数列表:
      pDriverObject:从I/O管理器中传进来的驱动对象
* 返回 值:返回初始化状态
*************************************************************************/
#pragma INITCODE
NTSTATUS CreateDevice (IN PDRIVER_OBJECT	pDriverObject) 
{
	NTSTATUS status;
	PDEVICE_OBJECT pDevObj;
	PDEVICE_EXTENSION pDevExt;
	//创建设备名称
	UNICODE_STRING devName;
	RtlInitUnicodeString(&devName,L"\\Device\\MyDDKDevice");
	//创建设备
	status = IoCreateDevice( pDriverObject,sizeof(DEVICE_EXTENSION),&(UNICODE_STRING)devName,FILE_DEVICE_UNKNOWN,0,TRUE,&pDevObj );
	if (!NT_SUCCESS(status))
		return status;
	pDevObj->Flags |= DO_BUFFERED_IO;
	pDevExt = (PDEVICE_EXTENSION)pDevObj->DeviceExtension;
	pDevExt->pDevice = pDevObj;
	pDevExt->ustrDeviceName = devName;
	KeInitializeTimer( &pDevExt->pollingTimer );
	KeInitializeDpc( &pDevExt->pollingDPC,OnTimerDpc,(PVOID) pDevObj );
	//创建符号链接
	UNICODE_STRING symLinkName;
	RtlInitUnicodeString(&symLinkName,L"\\??\\HelloDDK");
	pDevExt->ustrSymLinkName = symLinkName;
	status = IoCreateSymbolicLink( &symLinkName,&devName );
	if (!NT_SUCCESS(status)) 
	{
		IoDeleteDevice( pDevObj );
		return status;
	}
	return STATUS_SUCCESS;
}
/************************************************************************
* 函数名称:HelloDDKUnload
* 功能描述:负责驱动程序的卸载操作
* 参数列表:
      pDriverObject:驱动对象
* 返回 值:返回状态
*************************************************************************/
#pragma PAGEDCODE
VOID HelloDDKUnload (IN PDRIVER_OBJECT pDriverObject) 
{
	PDEVICE_OBJECT	pNextObj;
	KdPrint(("Enter DriverUnload\n"));
	pNextObj = pDriverObject->DeviceObject;
	//while (pNextObj != NULL) 
	//{
	//	PDEVICE_EXTENSION pDevExt = (PDEVICE_EXTENSION)
	//		pNextObj->DeviceExtension;

	//	//删除符号链接
	//	UNICODE_STRING pLinkName = pDevExt->ustrSymLinkName;
	//	IoDeleteSymbolicLink(&pLinkName);

	//	pNextObj = pNextObj->NextDevice;
	//	IoDeleteDevice( pDevExt->pDevice );
	//}
	UNICODE_STRING symLinkName;
	RtlInitUnicodeString(&symLinkName, L"\\??\\HelloDDK");
	pNextObj = pDriverObject->DeviceObject;//我的第一个设备                  
	IoDeleteSymbolicLink(&symLinkName);//删除符号连接                  
	IoDeleteDevice(pDriverObject->DeviceObject);//删除设备      
}

/************************************************************************
* 函数名称:HelloDDKDispatchRoutin
* 功能描述:对读IRP进行处理
* 参数列表:
      pDevObj:功能设备对象
      pIrp:从IO请求包
* 返回 值:返回状态
*************************************************************************/
#pragma PAGEDCODE
NTSTATUS HelloDDKDispatchRoutin(IN PDEVICE_OBJECT pDevObj,IN PIRP pIrp) 
{
	KdPrint(("Enter HelloDDKDispatchRoutin\n"));
	PIO_STACK_LOCATION stack = IoGetCurrentIrpStackLocation(pIrp);
	//建立一个字符串数组与IRP类型对应起来
	static char* irpname[] = 
	{
		"IRP_MJ_CREATE",
		"IRP_MJ_CREATE_NAMED_PIPE",
		"IRP_MJ_CLOSE",
		"IRP_MJ_READ",
		"IRP_MJ_WRITE",
		"IRP_MJ_QUERY_INFORMATION",
		"IRP_MJ_SET_INFORMATION",
		"IRP_MJ_QUERY_EA",
		"IRP_MJ_SET_EA",
		"IRP_MJ_FLUSH_BUFFERS",
		"IRP_MJ_QUERY_VOLUME_INFORMATION",
		"IRP_MJ_SET_VOLUME_INFORMATION",
		"IRP_MJ_DIRECTORY_CONTROL",
		"IRP_MJ_FILE_SYSTEM_CONTROL",
		"IRP_MJ_DEVICE_CONTROL",
		"IRP_MJ_INTERNAL_DEVICE_CONTROL",
		"IRP_MJ_SHUTDOWN",
		"IRP_MJ_LOCK_CONTROL",
		"IRP_MJ_CLEANUP",
		"IRP_MJ_CREATE_MAILSLOT",
		"IRP_MJ_QUERY_SECURITY",
		"IRP_MJ_SET_SECURITY",
		"IRP_MJ_POWER",
		"IRP_MJ_SYSTEM_CONTROL",
		"IRP_MJ_DEVICE_CHANGE",
		"IRP_MJ_QUERY_QUOTA",
		"IRP_MJ_SET_QUOTA",
		"IRP_MJ_PNP",
	};
	UCHAR type = stack->MajorFunction;
	if (type >= arraysize(irpname))
		KdPrint((" - Unknown IRP, major type %X\n", type));
	else
		KdPrint(("\t%s\n", irpname[type]));
	//对一般IRP的简单操作，后面会介绍对IRP更复杂的操作
	NTSTATUS status = STATUS_SUCCESS;
	// 完成IRP
	pIrp->IoStatus.Status = status;
	pIrp->IoStatus.Information = 0;	// bytes xfered
	IoCompleteRequest( pIrp, IO_NO_INCREMENT );
	KdPrint(("Leave HelloDDKDispatchRoutin\n"));
	return status;
}
NTSTATUS HelloDDKRead(IN PDEVICE_OBJECT pDevObj,IN PIRP pIrp) 
{
	KdPrint(("Enter HelloDDKRead\n"));
	PDEVICE_EXTENSION pDevExt = (PDEVICE_EXTENSION)pDevObj->DeviceExtension;
	//将IRP设置为挂起
	IoMarkIrpPending(pIrp);
	//将挂起的IRP记录下来
	pDevExt->currentPendingIRP = pIrp;
	//定义3秒的超时
	ULONG ulMicroSecond = 3000000;
	//将32位整数转化成64位整数
	LARGE_INTEGER timeout = RtlConvertLongToLargeInteger(-10*ulMicroSecond);
	KeSetTimer(&pDevExt->pollingTimer,timeout,&pDevExt->pollingDPC );//经过3秒走DPC历程 负数
	KdPrint(("Leave HelloDDKRead\n"));
	//返回pending状态
	return STATUS_PENDING;
}