test.c

来自「灰狐驱动学习笔记系列 参考 windows驱动开发详解和 楚狂人windows驱」· C语言 代码 · 共 255 行

/*

  Test.c
  
  Author: Adly
  Last Updated: 2008-11-16
	
*/

#include <ntddk.h>

#include "Test.h"

//
// A structure representing the instance information associated with
// a particular device
//

typedef struct _DEVICE_EXTENSION
{
	ULONG  StateVariable;
	
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;


//
// Function Declare
//

NTSTATUS
DriverEntry(
	IN PDRIVER_OBJECT		DriverObject,
	IN PUNICODE_STRING		RegistryPath
);

NTSTATUS
TestDispatchCreate(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
);

NTSTATUS
TestDispatchClose(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
);

NTSTATUS
TestDispatchDeviceControl(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
);

VOID
TestUnload(
	IN PDRIVER_OBJECT		DriverObject
);


#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, DriverEntry)
#pragma alloc_text(PAGE, TestDispatchCreate)
#pragma alloc_text(PAGE, TestDispatchClose)
#pragma alloc_text(PAGE, TestDispatchDeviceControl)
#pragma alloc_text(PAGE, TestUnload)
#endif // ALLOC_PRAGMA



NTSTATUS
DriverEntry(
	IN PDRIVER_OBJECT		DriverObject,
	IN PUNICODE_STRING		RegistryPath
)
{
	NTSTATUS			Status = STATUS_SUCCESS;    
	UNICODE_STRING		ntDeviceName;
	UNICODE_STRING		dosDeviceName;
	PDEVICE_EXTENSION	deviceExtension;
	PDEVICE_OBJECT		deviceObject = NULL;
	
	
	KdPrint(("[Test] DriverEntry: %wZ\n", RegistryPath));
	
	
	
	RtlInitUnicodeString(&ntDeviceName, TEST_DEVICE_NAME_W);
	
	
	Status = IoCreateDevice(
		DriverObject,
		sizeof(DEVICE_EXTENSION),		// DeviceExtensionSize
		&ntDeviceName,					// DeviceName
		FILE_DEVICE_TEST,	// DeviceType
		0,								// DeviceCharacteristics
		TRUE,							// Exclusive
		&deviceObject					// [OUT]
		);
	
	if(!NT_SUCCESS(Status))
	{
		KdPrint(("[Test] IoCreateDevice Error Code = 0x%X\n", Status));
		
		return Status;
	}

	deviceObject->Flags |= DO_BUFFERED_IO;
	
	deviceExtension = (PDEVICE_EXTENSION)deviceObject->DeviceExtension;
	
	//
	// Set up synchronization objects, state info,, etc.
	//
	
	//
	// Create a symbolic link that Win32 apps can specify to gain access
	// to this driver/device
	//
	
	RtlInitUnicodeString(&dosDeviceName, TEST_DOS_DEVICE_NAME_W);
	
	Status = IoCreateSymbolicLink(&dosDeviceName, &ntDeviceName);
	
	if(!NT_SUCCESS(Status))
	{
		KdPrint(("[Test] IoCreateSymbolicLink Error Code = 0x%X\n", Status));
		
		//
		// Delete Object
		//

		IoDeleteDevice(deviceObject);
		
		return Status;
	}
	
	//
	// Create dispatch points for device control, create, close.
	//
	
	DriverObject->MajorFunction[IRP_MJ_CREATE]			= TestDispatchCreate;
	DriverObject->MajorFunction[IRP_MJ_CLOSE]			= TestDispatchClose;
	DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL]	= TestDispatchDeviceControl;
	DriverObject->DriverUnload							= TestUnload;
	

	return Status;
}

NTSTATUS
TestDispatchCreate(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
)
{
	NTSTATUS Status = STATUS_SUCCESS;
	
	Irp->IoStatus.Information = 0;
	
	KdPrint(("[Test] IRP_MJ_CREATE\n"));
	
	Irp->IoStatus.Status = Status;
	IoCompleteRequest(Irp, IO_NO_INCREMENT);
	
	return Status;
}

NTSTATUS
TestDispatchClose(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
)
{
	NTSTATUS Status = STATUS_SUCCESS;
	
	Irp->IoStatus.Information = 0;
	
	KdPrint(("[Test] IRP_MJ_CLOSE\n"));
	
	Irp->IoStatus.Status = Status;
	IoCompleteRequest(Irp, IO_NO_INCREMENT);
	
	return Status;
}

//////////////////////////////////////////////////////////////////////////
//
// 修改下面这个派遣例程
//

NTSTATUS
TestDispatchDeviceControl(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
)
{
	NTSTATUS			Status = STATUS_SUCCESS;
	PIO_STACK_LOCATION	irpStack;
	PVOID				ioBuf;
	ULONG				inBufLength;
	ULONG				ioControlCode;

	// 得到当前设备栈
	irpStack = IoGetCurrentIrpStackLocation(Irp);
	// 获取信息
	ioBuf = Irp->AssociatedIrp.SystemBuffer;
	inBufLength = irpStack->Parameters.DeviceIoControl.InputBufferLength;
	ioControlCode = irpStack->Parameters.DeviceIoControl.IoControlCode;
	
	if (ioControlCode == MY_DVC_IN_CODE)
	{
		DbgPrint("[Test] %s", ioBuf);

		Irp->IoStatus.Information = inBufLength;
		Irp->IoStatus.Status = Status;
	}
	else
	{
		DbgPrint("[Test] Other IOCTL!");

		Irp->IoStatus.Information = 0;
		Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
	}
	
	IoCompleteRequest(Irp, IO_NO_INCREMENT);
	return Status;
}

VOID
TestUnload(
	IN PDRIVER_OBJECT		DriverObject
)
{
	UNICODE_STRING dosDeviceName;
	
	//
	// Free any resources
	//
	
	//
	// Delete the symbolic link
	//
	
	RtlInitUnicodeString(&dosDeviceName, TEST_DOS_DEVICE_NAME_W);
	
	IoDeleteSymbolicLink(&dosDeviceName);
	
	//
	// Delete the device object
	//
	
	IoDeleteDevice(DriverObject->DeviceObject);
	
	KdPrint(("[Test] Unloaded"));
}