how get USB device obj by GUID?

NTDEV
1

Hi,

Anyone can shed some lights on the following problem:
In user mode, I can use the Setupxxx APIs to enumerate all USB devices.
In kernel mode, how to do that?
For example, if I have a GUID or have the name “USB Mass Storage Device”,
is there a way to get the related device objects?

thanks in advance,

AFei

2

What are you trying to accomplish? If you’re planning on attaching to
them or something, you’d be better off properly installing yourself as a
filter in the first place, for example…

AFei wrote:

Hi,

Anyone can shed some lights on the following problem:
In user mode, I can use the Setupxxx APIs to enumerate all USB devices.
In kernel mode, how to do that?
For example, if I have a GUID or have the name “USB Mass Storage Device”,
is there a way to get the related device objects?

thanks in advance,

AFei

–
…/ray..

Please remove “.spamblock” from my email address if you need to contact
me outside the newsgroup.

3

Actually I want to issue IRPs to the specified USB class devices, I need
the DeviceObject to use IoCallDriver(…) stuff. Any ideas?
Thanks for the reply.

“Ray Trent” wrote in message
news:xxxxx@ntdev…
> What are you trying to accomplish? If you’re planning on attaching to
> them or something, you’d be better off properly installing yourself as a
> filter in the first place, for example…
>
> AFei wrote:
>
> > Hi,
> >
> > Anyone can shed some lights on the following problem:
> > In user mode, I can use the Setupxxx APIs to enumerate all USB devices.
> > In kernel mode, how to do that?
> > For example, if I have a GUID or have the name “USB Mass Storage
Device”,
> > is there a way to get the related device objects?
> >
> > thanks in advance,
> >
> > AFei
> >
> >
> >
>
> –
> …/ray..
>
> Please remove “.spamblock” from my email address if you need to contact
> me outside the newsgroup.
>

4

Will IoGetDeviceInterfaces do what you want?

Installing yourself as a filter on those devices might save you trouble,
though…

AFei wrote:

Actually I want to issue IRPs to the specified USB class devices, I need
the DeviceObject to use IoCallDriver(…) stuff. Any ideas?
Thanks for the reply.

“Ray Trent” wrote in message
> news:xxxxx@ntdev…
>
>>What are you trying to accomplish? If you’re planning on attaching to
>>them or something, you’d be better off properly installing yourself as a
>>filter in the first place, for example…
>>
>>AFei wrote:
>>
>>
>>>Hi,
>>>
>>>Anyone can shed some lights on the following problem:
>>>In user mode, I can use the Setupxxx APIs to enumerate all USB devices.
>>>In kernel mode, how to do that?
>>>For example, if I have a GUID or have the name “USB Mass Storage
>
> Device”,
>
>>>is there a way to get the related device objects?
>>>
>>>thanks in advance,
>>>
>>>AFei
>>>
>>>
>>>
>>
>>–
>>…/ray..
>>
>>Please remove “.spamblock” from my email address if you need to contact
>>me outside the newsgroup.
>>
>
>
>
>

–
…/ray..

Please remove “.spamblock” from my email address if you need to contact
me outside the newsgroup.

5

Have tried it, return success but the returned symlist was empty, following
is the codes:

static GUID guid_USB_MASS_STORAGE = { 0x36fc9e60, 0xc465, 0x11cf, { 0x80,
0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } };
PWSTR symList = NULL;
ntStatus = IoGetDeviceInterfaces( &guid_USB_MASS_STORAGE, NULL,
DEVICE_INTERFACE_INCLUDE_NONACTIVE, &symList );

You are right, the filter driver should work, just don't want to build a new
driver for this small feature.
Because it's not difficult to enumurate devices in user mode, I thought
there must be some method in
kernel mode as well.

thanks.

6

Hmmm. No idea why that’s failing.

You could try IoRegisterPlugPlayNotification (passing the
PNPNOTIFY_DEVICE_INTERFACE_INCLUDE_EXISTING_INTERFACES flag since you
probably care about existing devices and not just ones that appear later).

AFei wrote:

Have tried it, return success but the returned symlist was empty, following
is the codes:

static GUID guid_USB_MASS_STORAGE = { 0x36fc9e60, 0xc465, 0x11cf, { 0x80,
0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } };
PWSTR symList = NULL;
ntStatus = IoGetDeviceInterfaces( &guid_USB_MASS_STORAGE, NULL,
DEVICE_INTERFACE_INCLUDE_NONACTIVE, &symList );

You are right, the filter driver should work, just don’t want to build a new
driver for this small feature.
Because it’s not difficult to enumurate devices in user mode, I thought
there must be some method in
kernel mode as well.

thanks.

–
…/ray..

Please remove “.spamblock” from my email address if you need to contact
me outside the newsgroup.

7

Problem solved.
The device object can be get from the object name, I have
to translate GUID to object name in user mode, anyway it works.

“Ray Trent” wrote in message
news:xxxxx@ntdev…
> Hmmm. No idea why that’s failing.
>
> You could try IoRegisterPlugPlayNotification (passing the
> PNPNOTIFY_DEVICE_INTERFACE_INCLUDE_EXISTING_INTERFACES flag since you
> probably care about existing devices and not just ones that appear later).
>
> AFei wrote:
> > Have tried it, return success but the returned symlist was empty,
following
> > is the codes:
> > -----------------------------
> > static GUID guid_USB_MASS_STORAGE = { 0x36fc9e60, 0xc465, 0x11cf, {
0x80,
> > 0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } };
> > PWSTR symList = NULL;
> > ntStatus = IoGetDeviceInterfaces( &guid_USB_MASS_STORAGE, NULL,
> > DEVICE_INTERFACE_INCLUDE_NONACTIVE, &symList );
> > -----------------------------
> > You are right, the filter driver should work, just don’t want to build a
new
> > driver for this small feature.
> > Because it’s not difficult to enumurate devices in user mode, I thought
> > there must be some method in
> > kernel mode as well.
> >
> > thanks.
> >
> >
> >
>
> –
> …/ray..
>
> Please remove “.spamblock” from my email address if you need to contact
> me outside the newsgroup.
>