WDM驱动AddDevice例程中指定设备名的问题

cyu02

WDM驱动AddDevice例程中指定设备名的问题 [复制链接]

WDM模式的驱动程序，创建设备指定设备名有两种方式，一个是调用IoRegisterDeviceInterface,一个是在IoCreateDevice函数中指定设备名。我按照《windows驱动程序开发详解》中的HelloWDM的方式创建的驱动，编译可以通过，但是无法安装成功，安装后有个黄色叹号，并提示reboot。我知道开发中鼓励使用第一种方式，但是第二种方式为什么会出现这种问题呢？
代码如下：

status = IoCreateDevice(
                DriverObject,
                sizeof(DEVICE_EXTENSION),
                &(UNICODE_STRING)devname,
                FILE_DEVICE_DISK,
                0,
                FALSE,
                &fdo);
        if( !NT_SUCCESS(status))
        {
                return status;
        }
        PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION)fdo->DeviceExtension;
        pdx->devName=devName;
        KeInitializeEvent(&pdx->StoppingEvent,NotificationEvent,FALSE);
        pdx->bStopping=FALSE;
        pdx->NextStackDevice = IoAttachDeviceToDeviceStack(fdo, PhysicalDeviceObject);

chenseawind

我来接分，呵呵

sunghx

普通WINDOWS的驱动目前不太火呵呵。

nasame

在设备管理器/属性的设备状态中可以得到一个错误码。能帮助你分析一下错误原因。

海洋dz

引用 2 楼 beyondma 的回复:
普通WINDOWS的驱动目前不太火呵呵。

是相当不火啊，问个问题都少人问津

proudpeo

两段ddk里的关于IOCreateDeive()中关于device name 参数原文，以及microsoft 关于如何name a device driver, 相信看了你就释然了。
驱动开发还是很有qian途的。加油。

1. “DeviceName （）
Optionally points to a buffer containing a zero-terminated Unicode string that names the device object. The string must be a full path name.
Typically, only physical device objects (PDOs), which are created by PnP bus drivers, are named. PnP function drivers and filter drivers should not specify a DeviceName for a functional device object (FDO) or filter device object (filter DO). Naming an FDO or filter DO bypasses the PnP Manager's security. If a user-mode component needs a symbolic link to the device, the function or filter driver should register a device interface (see IoRegisterDeviceInterface ). If a kernel-mode component needs a legacy device name, the driver must name the FDO, but naming is not recommended. "

2."
IoCreateDevice can only be used to create an unnamed device object, or a named device object for which a security descriptor is set by an INF file. Otherwise, drivers must use IoCreateDeviceSecure to create named device objects.
"

xiaoxiao818

你好像没有导出符号连接名啊：

        UNICODE_STRING         deviceNameUnicodeString;
        RtlInitUnicodeString(&deviceNameUnicodeString, NT_DEVICE_NAME);

        NTSTATUS status = STATUS_SUCCESS;

        status = IoCreateDevice(DriverObject, sizeof(DEVICE_EXTENSION),
                &deviceNameUnicodeString,FILE_DEVICE_UNKNOWN,
                0, false, &FunctionDevice);

        if (!NT_SUCCESS(status))
        {
                DT("%s IoCreateDevice VMouse failed", FUN);
                return status;
        }

        UNICODE_STRING deviceLinkUnicodeString;
        RtlInitUnicodeString(&deviceLinkUnicodeString, DOS_DEVICE_NAME);
        status = IoCreateSymbolicLink(&deviceLinkUnicodeString, &deviceNameUnicodeString);
        if (!NT_SUCCESS(status))
        {
                DT("%s IoCreateSymbolicLink VMouse failed", FUN);
                if (FunctionDevice)
                {
                        IoDeleteDevice(FunctionDevice);
                        return status;
                }
        }

yaowenqiang

引用 5 楼 figo_liu1008 的回复:
两段ddk里的关于IOCreateDeive()中关于device name 参数原文，以及microsoft 关于如何name a device driver, 相信看了你就释然了。
驱动开发还是很有qian途的。加油。

1. “DeviceName （）
Optionally points to a buffer containing a zero-terminated Unicode string that names the device object. The string must be a full path name.
Typically, only physical device objects (PDOs), which are created by PnP bus drivers, are named. PnP function drivers and filter drivers should not specify a DeviceName for a functional device object (FDO) or filter device object (filter DO). Naming an FDO or filter DO bypasses the PnP Manager's security. If a user-mode component needs a symbolic link to the device, the function or filter driver should register a device interface (see IoRegisterDeviceInterface ). If a kernel-mode component needs a legacy device name, the driver must name the FDO, but naming is not recommended. "

2."
IoCreateDevice can only be used to create an unnamed device object, or a named device object for which a security descriptor is set by an INF file. Otherwise, drivers must use IoCreateDeviceSecure to create named device objects.
"

多谢，多看看DDK确实很有帮助。
PNP模式的驱动不鼓励指定设备名，但有的书中也是说是可以指定的，这本书《windows驱动程序开发详解》就是如此，我怀疑是字符串的问题，或者如DDK中所说zero-terminated Unicode string 。
IoCreateDevice can only be used to create an unnamed device object：这句话不太明白，NT模式的驱动使用这中方式，是可以指定设备名的，不明白为什么是only by used.

songtl

引用 6 楼 jassonrose 的回复:
你好像没有导出符号连接名啊：

UNICODE_STRING? ? ? ? deviceNameUnicodeString;
RtlInitUnicodeString(&deviceNameUnicodeString, NT_DEVICE_NAME);

NTSTATUS status = STATUS_SUCCESS;

status = IoCreateDevice(DriverObject, sizeof(DEVICE_EXTENSION),
&deviceNameUnicodeString,FILE_DEVICE_UNKNOWN,
0, false, &FunctionDevice);

if (!NT_SUCCESS(status))
{
DT("%s IoCreateDevice VMouse failed", FUN);
return status;
}

UNICODE_STRING deviceLinkUnicodeString;
RtlInitUnicodeString(&deviceLinkUnicodeString, DOS_DEVICE_NAME);
status = IoCreateSymbolicLink(&deviceLinkUnicodeString, &deviceNameUnicodeString);
if (!NT_SUCCESS(status))
{
DT("%s IoCreateSymbolicLink VMouse failed", FUN);
if (FunctionDevice)
{
IoDeleteDevice(FunctionDevice);
return status;
}
}

不导出连接名不会出现这种问题的。

kof2ooo

"
多谢，多看看DDK确实很有帮助。
PNP模式的驱动不鼓励指定设备名，但有的书中也是说是可以指定的，这本书《windows驱动程序开发详解》就是如此，我怀疑是字符串的问题，或者如DDK中所说zero-terminated Unicode string 。
IoCreateDevice can only be used to create an unnamed device object：这句话不太明白，NT模式的驱动使用这中方式，是可以指定设备名的，不明白为什么是only by used.

"
我的理解：这是microsoft关于它IoCreateDevce API的约定。
你用它这段话里的另一个IoCreateDeviceSecure 试一下。