DeviceExtension:
8207fea8 8207fdf0 00280026 f8a77150 001a0018
8207feb8 f8a77130 00000000 0000000d 8207fdf0
DriverEntry結束后8207feb8空間被釋放,驅動卸載時調用IoDeleteSymbolicLink函數藍屏,如果將code_seg("INIT")去掉可正常,啟動/停止。
驅動源碼來自《windows驅動開發技術詳解》,詫異的是在網上查詢沒找到該問題的答案然道都能正常運行?
源碼如下:
代碼:
/************************************************************************
* 文件名稱:Driver.cpp
* 作 者:張帆
* 完成日期:2007-11-1
*************************************************************************/
#include "Driver.h"
/************************************************************************
* 函數名稱:DriverEntry
* 功能描述:初始化驅動程序，定位和申請硬件資源，創建內核對象
* 參數列表:
pDriverObject:從I/O管理器中傳進來的驅動對象
pRegistryPath:驅動程序在注冊表的中的路徑
* 返回 值:返回初始化驅動狀態
*************************************************************************/
#pragma INITCODE
extern "C" NTSTATUS DriverEntry (
IN PDRIVER_OBJECT pDriverObject,
IN PUNICODE_STRING pRegistryPath )
{
NTSTATUS status;
KdPrint(("Enter DriverEntry\n"));
//注冊其他驅動調用函數入口
pDriverObject->DriverUnload = HelloDDKUnload;
pDriverObject->MajorFunction[IRP_MJ_CREATE] = HelloDDKDispatchRoutine;
pDriverObject->MajorFunction[IRP_MJ_CLOSE] = HelloDDKDispatchRoutine;
pDriverObject->MajorFunction[IRP_MJ_WRITE] = HelloDDKDispatchRoutine;
pDriverObject->MajorFunction[IRP_MJ_READ] = HelloDDKDispatchRoutine;
//創建驅動設備對象
status = CreateDevice(pDriverObject);
KdPrint(("DriverEntry end\n"));
return status;
}
/************************************************************************
* 函數名稱:CreateDevice
* 功能描述:初始化設備對象
* 參數列表:
pDriverObject:從I/O管理器中傳進來的驅動對象
* 返回 值:返回初始化狀態
*************************************************************************/
#pragma INITCODE
extern "C" NTSTATUS CreateDevice (
IN PDRIVER_OBJECT pDriverObject)
{
NTSTATUS status;
PDEVICE_OBJECT pDevObj;
PDEVICE_EXTENSION pDevExt;
//創建設備名稱
UNICODE_STRING devName;
RtlInitUnicodeString(&devName,L"\\Device\\MyDDKDevice");
//創建設備
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;
//創建符號鏈接
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;
}
/************************************************************************
* 函數名稱:HelloDDKUnload
* 功能描述:負責驅動程序的卸載操作
* 參數列表:
pDriverObject:驅動對象
* 返回 值:返回狀態
*************************************************************************/
#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;
//刪除符號鏈接
UNICODE_STRING pLinkName = pDevExt->ustrSymLinkName;
IoDeleteSymbolicLink(&pLinkName);
pNextObj = pNextObj->NextDevice;
IoDeleteDevice( pDevExt->pDevice );
}
}
/************************************************************************
* 函數名稱:HelloDDKDispatchRoutine
* 功能描述:對讀IRP進行處理
* 參數列表:
pDevObj:功能設備對象
pIrp:從IO請求包
* 返回 值:返回狀態
*************************************************************************/
#pragma PAGEDCODE
NTSTATUS HelloDDKDispatchRoutine(IN PDEVICE_OBJECT pDevObj,
IN PIRP pIrp)
{
KdPrint(("Enter HelloDDKDispatchRoutine\n"));
NTSTATUS status = STATUS_SUCCESS;
// 完成IRP
pIrp->IoStatus.Status = status;
pIrp->IoStatus.Information = 0; // bytes xfered
IoCompleteRequest( pIrp, IO_NO_INCREMENT );
KdPrint(("Leave HelloDDKDispatchRoutine\n"));
return status;
}
代碼:
/************************************************************************
* 文件名稱:Driver.h
* 作 者:張帆
* 完成日期:2007-11-1
*************************************************************************/
#pragma once
#ifdef __cplusplus
extern "C"
{
#endif
#include <NTDDK.h>
#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; //設備名稱
UNICODE_STRING ustrSymLinkName; //符號鏈接名
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
// 函數聲明
extern "C" NTSTATUS CreateDevice (IN PDRIVER_OBJECT pDriverObject);
VOID HelloDDKUnload (IN PDRIVER_OBJECT pDriverObject);
NTSTATUS HelloDDKDispatchRoutine(IN PDEVICE_OBJECT pDevObj,
IN PIRP pIrp);