驱动开发学习一

关于驱动开发确实是有难度的，我在这里简单记录下简单的代码

首先是sys

//main.c
#include<ntddk.h>

//定义宏
#define DEVICE_NAME "\Device\MyReadDevice"
#define SYN_LINK_NAME "\??\MyRead"

//全局定义方便在多个函数中使用

PDEVICE_OBJECT pDevice;
UNICODE_STRING DeviceName;


NTSTATUS Unload(PDRIVER_OBJECT driver)
{

    DbgPrint("this driver is loading
");
    return STATUS_SUCCESS;
    


}

//读取函数操作
NTSTATUS MyDriverRead(PDEVICE_OBJECT driver, PIRP pirp)
{
    NTSTATUS status;
    PIO_STACK_LOCATION stack = IoGetCurrentIrpStackLocation(pirp);
    ULONG ulReadlength = stack->Parameters.Read.Length;
    pirp->IoStatus.Status= STATUS_SUCCESS;
    pirp->IoStatus.Information = ulReadlength;
    //格式化读取内容
    memset(pirp->AssociatedIrp.SystemBuffer, 0xaa, ulReadlength);
    IoCompleteRequest(pirp, IO_NO_INCREMENT);
    //读取完成标志
    DbgPrint("over
");
    return STATUS_SUCCESS;
}




NTSTATUS DriverEntry(PDRIVER_OBJECT driver, PUNICODE_STRING reg_path)
{
    //PVOID test = NULL;
    //PUCHAR test1 = "aaaaaaaa";
    //memcpy(test, test1, 4);
    RtlInitUnicodeString(&DeviceName, DEVICE_NAME);
    NTSTATUS status = IoCreateDevice(driver, 0, &DeviceName, FILE_DEVICE_UNKNOWN, 0, TRUE, &pDevice);
    
    //判断是否加载成功
    if (!NT_SUCCESS(status))
    {
        DbgPrint("Create Device failed");
        return STATUS_SUCCESS;

    }
    UNICODE_STRING SymLinkName = RTL_CONSTANT_STRING(SYN_LINK_NAME);
    status = IoCreateSymbolicLink(&SymLinkName, &DeviceName);
    if (!NT_SUCCESS(status))
    {
     
        DbgPrint("Create SymLINKname faile
");
        return STATUS_SUCCESS;
    
    }
    driver->DriverUnload = Unload;
    //DbgPrint("this is my first Driver
");
    //设置符号读取
    driver->MajorFunction[IRP_MJ_READ] = MyDriverRead;

    pDevice->Flags |= DO_BUFFERED_IO;




    return STATUS_SUCCESS;


}

然后是应用层开发

我们选择的是windows控制台程序，这里不做赘述

贴代码

//read.cpp
#include "stdafx.h"
#include<windows.h>

int a;
int _tmain(int argc, _TCHAR* argv[])
{

        //变量的初始化定义
    HANDLE hDevice =
    CreateFile(L"\\.\MyRead",
    GENERIC_READ | GENERIC_WRITE,
    0, //分享
    NULL,  //安全检测
    OPEN_EXISTING,
    FILE_ATTRIBUTE_NORMAL,
    NULL);
    if (hDevice == INVALID_HANDLE_VALUE)
    {
        printf("failed to obtain file handle device:"
            "%s with win32 error code:%d
",
            "MYWDMDRIVER",GetLastError);
        return 1;

    }
    UCHAR buffer[10];
    ULONG ulRead;
    BOOL bRet = ReadFile(hDevice, buffer, 10, &ulRead, NULL);
    if (bRet)
    {
    
        printf("Read %d bytes:", ulRead);
        for (int i = 0; i < (int)ulRead; i++)
        {
            printf("%02X",buffer[1]);
        }
        printf("
");
    }       
    CloseHandle(hDevice);
    scanf("%d", &a);
    return 0;
}

驱动之路漫漫，何处是归处？

以上资料来自https://www.bilibili.com/video/av26193169/?p=2

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