• Windows驱动开发-r3和r0通信


    用户部分代码:

    int main()
    {
        HANDLE hDevice = CreateFile(L"\\.\MyTest", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
        if (hDevice==INVALID_HANDLE_VALUE)
        {
            printf("Failed to obtain device handle...");
            getchar();
            return 0;
        }
    
        UCHAR buffer[10];
        ULONG size;
        LPDWORD ll;
        BOOL result = ReadFile(hDevice, buffer, 10, &size, NULL);
        if (result)
        {
            printf("READ %d BYTES...", size);
            for (size_t i = 0; i < (size_t)size; i++)
            {
                printf("%02x
    ", buffer[i]);
            }
        }
        CloseHandle(hDevice);
        getchar();
        return 0;
    }

    驱动部分代码:

    #include <ntddk.h>
    
    #define DEVICE_NAME L"\Device\MyTestDevice"
    #define SYMBOL_LINK_NAME L"\??\MyTest"
    
    PDEVICE_OBJECT pDevice;
    UNICODE_STRING DeviceName;
    UNICODE_STRING SymbolLinkName;
    
    NTSTATUS DeviceCreate(PDEVICE_OBJECT pDeviceObject,PIRP pIrp);
    NTSTATUS DeviceClose(PDEVICE_OBJECT pDeviceObject, PIRP pIrp);
    NTSTATUS DeviceRead(PDEVICE_OBJECT pDeviceObject, PIRP pIrp);
    
    NTSTATUS unload(PDRIVER_OBJECT driver)
    {
        DbgPrint("driver :%ws unload", driver->DriverName);
        DbgPrint("driver unload success...");
        IoDeleteSymbolicLink(&SymbolLinkName);
        IoDeleteDevice(pDevice);
        return STATUS_SUCCESS;
    }
    
    NTSTATUS DriverEntry(PDRIVER_OBJECT driver,PUNICODE_STRING reg_path)
    {
        NTSTATUS ntstatus = STATUS_SUCCESS;
        driver->DriverUnload = unload;
        driver->MajorFunction[IRP_MJ_CREATE] = DeviceCreate;//创建
        driver->MajorFunction[IRP_MJ_READ] = DeviceRead;//通信
        driver->MajorFunction[IRP_MJ_CLOSE] = DeviceClose;//关闭
    
        RtlInitUnicodeString(&DeviceName, DEVICE_NAME);
        RtlInitUnicodeString(&SymbolLinkName, SYMBOL_LINK_NAME);
    
        ntstatus = IoCreateDevice(driver, 0, &DeviceName, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN, FALSE, &pDevice);
        if (!NT_SUCCESS(ntstatus))
        {
            DbgPrint("IoCreateDevice Failed");
            return ntstatus;
        }
    
        ntstatus = IoCreateSymbolicLink(&SymbolLinkName, &DeviceName);
        if (!NT_SUCCESS(ntstatus))
        {
            DbgPrint("IoCreateSymbolicLink Failed");
            IoDeleteDevice(pDevice);
            return ntstatus;
        }
    
        pDevice->Flags |= DO_BUFFERED_IO;
        DbgPrint("%ws", reg_path->Buffer);
        DbgPrint("driver load success...");
        return STATUS_SUCCESS;
    }
    
    NTSTATUS DeviceCreate(PDEVICE_OBJECT pDeviceObject, PIRP pIrp)
    {
        //业务代码区
    
        //设置返回状态
        pIrp->IoStatus.Status = STATUS_SUCCESS;
        pIrp->IoStatus.Information = 0;            
        IoCompleteRequest(pIrp, IO_NO_INCREMENT);
        DbgPrint("create device success...%d",pDeviceObject->ActiveThreadCount);//这里蛋疼得狠,vs2019里,pDeviceObject不用一下,编译就报错,所有派遣函数一样
        return STATUS_SUCCESS;
    }
    
    NTSTATUS DeviceClose(PDEVICE_OBJECT pDeviceObject, PIRP pIrp)
    {
        //业务代码区
    
        //设置返回状态
        pIrp->IoStatus.Status = STATUS_SUCCESS;//getLastError()得到的值
        pIrp->IoStatus.Information = 0;            //返回给3环多少数据,没有填0
        IoCompleteRequest(pIrp, IO_NO_INCREMENT);
        DbgPrint("create device success...%d", pDeviceObject->ActiveThreadCount);
        return STATUS_SUCCESS;
    }
    
    NTSTATUS DeviceRead(PDEVICE_OBJECT pDeviceObject, PIRP pIrp)
    {
        PIO_STACK_LOCATION iostack;
        iostack = IoGetCurrentIrpStackLocation(pIrp);
        ULONG length = iostack->Parameters.Read.Length;
        PVOID pBuffer = pIrp->AssociatedIrp.SystemBuffer;
    
        pIrp->IoStatus.Status = STATUS_SUCCESS;//getLastError()得到的值
        pIrp->IoStatus.Information = length;            //返回给3环多少数据,没有填0
        RtlFillMemory(pBuffer,length,0xAA);
        IoCompleteRequest(pIrp, IO_NO_INCREMENT);
        DbgPrint("read device success...%d", pDeviceObject->ActiveThreadCount);
        return STATUS_SUCCESS;
    }
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  • 原文地址:https://www.cnblogs.com/a-s-m/p/12331288.html
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