EXE与SYS通信(缓冲模式)

EXE部分

head.h

[cpp] view plaincopy

#include<winioctl.h> //CTL_CODE
#define add_code CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED,FILE_ANY_ACCESS)
#define sub_code CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_BUFFERED,FILE_ANY_ACCESS)

main.cpp

[cpp] view plaincopy

#include <stdio.h>
#include <tchar.h>
#include <windows.h>
#include "head.h"
int add (HANDLE hDevice ,int a,int b)
{
int port[2]={a,b};
int bufret=0;
ULONG dwWrite=0;
DeviceIoControl(hDevice,add_code,&port,sizeof(port),&bufret,sizeof(bufret),&dwWrite,NULL);
return bufret;
}
int main (void)
{
getchar();
getchar();
HANDLE hDevice=CreateFile(TEXT("\\\\.\\My_DriverLinkName"),
GENERIC_READ|GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hDevice==INVALID_HANDLE_VALUE)
{
printf("打开设备失败\n");
getchar();
getchar();
return 0;
}
int k=add(hDevice,11,22);
printf("%d\n",k);
getchar();
getchar();
return 0;
}

SYS部分

head.h

#define add_code CTL_CODE(FILE_DEVICE_UNKNOWN,  0x800,  METHOD_BUFFERED,FILE_ANY_ACCESS)
#define sub_code CTL_CODE(FILE_DEVICE_UNKNOWN,  0x801,  METHOD_BUFFERED,FILE_ANY_ACCESS)

#include <ntdef.h>
#include <ntddk.h>
#include "ctl_code.h"    #ifdef __cplusplus
extern "C" NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING  RegistryPath);
#endif    NTSTATUS ddk_DispatchRoutine_CONTROL(IN PDEVICE_OBJECT pDevobj,IN PIRP pIrp );
void TestDDK125096Unload(IN PDRIVER_OBJECT DriverObject);
NTSTATUS CreateMyDevice (IN PDRIVER_OBJECT pDriverObject);     NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING  RegistryPath)
{    DbgPrint("Hello from TestDDK125096!\n");    DriverObject->DriverUnload = TestDDK125096Unload;    DriverObject->MajorFunction[IRP_MJ_CREATE]=ddk_DispatchRoutine_CONTROL; //IRP_MJ_CREATE相关IRP处理函数    DriverObject->MajorFunction[IRP_MJ_CLOSE]=ddk_DispatchRoutine_CONTROL; //IRP_MJ_CLOSE相关IRP处理函数    DriverObject->MajorFunction[IRP_MJ_READ]=ddk_DispatchRoutine_CONTROL; //IRP_MJ_READ相关IRP处理函数    DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL]=ddk_DispatchRoutine_CONTROL; //IRP_MJ_DEVICE_CONTROL相关IRP处理函数    CreateMyDevice(DriverObject);//创建相应的设备    return STATUS_SUCCESS;
}    void TestDDK125096Unload(IN PDRIVER_OBJECT DriverObject)
{    DbgPrint("Goodbye from TestDDK125096!\n");    PDEVICE_OBJECT pDev;//用来取得要删除设备对象    UNICODE_STRING symLinkName; //     pDev=DriverObject->DeviceObject;    IoDeleteDevice(pDev); //删除设备    //取符号链接名字    RtlInitUnicodeString(&symLinkName,L"\\??\\My_DriverLinkName");    //删除符号链接    IoDeleteSymbolicLink(&symLinkName);    KdPrint(("驱动成功被卸载...OK-----------")); //sprintf,printf    //取得要删除设备对象    //删掉所有设备    DbgPrint("卸载成功");    }    NTSTATUS ddk_DispatchRoutine_CONTROL(IN PDEVICE_OBJECT pDevobj,IN PIRP pIrp )
{   //    ULONG info;    //得到当前栈指针    PIO_STACK_LOCATION stack = IoGetCurrentIrpStackLocation(pIrp);    ULONG mf=stack->MajorFunction;//区分IRP    switch (mf)    {    case IRP_MJ_DEVICE_CONTROL:    {     KdPrint(("Enter myDriver_DeviceIOControl\n"));    NTSTATUS status = STATUS_SUCCESS;       //得到输入缓冲区大小    ULONG cbin = stack->Parameters.DeviceIoControl.InputBufferLength;    //得到输出缓冲区大小    ULONG cbout = stack->Parameters.DeviceIoControl.OutputBufferLength;    //得到IOCTL码    ULONG code = stack->Parameters.DeviceIoControl.IoControlCode;    switch (code)    {     case add_code:    {           int a,b;    KdPrint(("add_code 1111111111111111111\n"));    //缓冲区方式IOCTL    //获取缓冲区数据   a,b         int * InputBuffer = (int*)pIrp->AssociatedIrp.SystemBuffer;    _asm    {    mov eax,InputBuffer    mov ebx,[eax]    mov a,ebx    mov ebx,[eax+4]    mov b,ebx    }    KdPrint(("a=%d,b=%d \n", a,b));    a=a+b;    //C、驱动层返回数据至用户层    //操作输出缓冲区    int* OutputBuffer = (int*)pIrp->AssociatedIrp.SystemBuffer;    _asm    {    mov eax,a    mov ebx,OutputBuffer    mov [ebx],eax //bufferet=a+b    }    KdPrint(("a+b=%d \n",a));    //设置实际操作输出缓冲区长度    info = 4;    break;    }    case sub_code:    {    break;    }    }//end code switch    break;    }    case IRP_MJ_CREATE:    {    break;    }    case IRP_MJ_CLOSE:    {    break;    }    case IRP_MJ_READ:    {    break;    }    }    //对相应的IPR进行处理    pIrp->IoStatus.Information=info;//设置操作的字节数为0，这里无实际意义    pIrp->IoStatus.Status=STATUS_SUCCESS;//返回成功    IoCompleteRequest(pIrp,IO_NO_INCREMENT);//指示完成此IRP    KdPrint(("离开派遣函数\n"));//调试信息    return STATUS_SUCCESS; //返回成功
}    NTSTATUS CreateMyDevice (IN PDRIVER_OBJECT pDriverObject)
{    NTSTATUS status;    PDEVICE_OBJECT pDevObj;/*用来返回创建设备*/    //创建设备名称    UNICODE_STRING devName;    UNICODE_STRING symLinkName; //     RtlInitUnicodeString(&devName,L"\\Device\\125DDK_Device");/*对devName初始化字串为 "\\Device\\125DDK_Device"*/    //创建设备    status = IoCreateDevice( pDriverObject,\0,\&devName,\FILE_DEVICE_UNKNOWN,\0, TRUE,\&pDevObj);if (!NT_SUCCESS(status))    {    if (status==STATUS_INSUFFICIENT_RESOURCES)    {    KdPrint(("资源不足 STATUS_INSUFFICIENT_RESOURCES"));    }    if (status==STATUS_OBJECT_NAME_EXISTS )    {    KdPrint(("指定对象名存在"));    }    if (status==STATUS_OBJECT_NAME_COLLISION)    {    KdPrint(("//对象名有冲突"));    }    KdPrint(("设备创建失败...++++++++"));    return status;    }    KdPrint(("设备创建成功...++++++++"));    pDevObj->Flags |= DO_BUFFERED_IO;    //创建符号链接    RtlInitUnicodeString(&symLinkName,L"\\??\\My_DriverLinkName");    status = IoCreateSymbolicLink( &symLinkName,&devName );    if (!NT_SUCCESS(status)) /*status等于0*/    {    IoDeleteDevice( pDevObj );    return status;    }    return STATUS_SUCCESS;
}

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