Creating a Device Object on Demand.

NTDEV
1

Hi All,

Can I create a Device Object the way we do in AddDevice Routine. Will all
the other PnP methods like start device etc be called on the new device
object.

I have a filter driver (with unnamed device object). Based on an IOCTL I
have to expose a read only version of the device which should also be named
so that user can access it.

Any other suggestion/pointers for doing this is welcomed.

Thanks.

Avi

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2

If you want the user to be able to use device interfaces, you will have to become a bus driver. If you want to create a named device object, then check out this kb article:

http://support.microsoft.com/default.aspx?scid=kb;en-us;262305

This may not describe 100% of what you want, but will give some good indications on how to proceed.

D

This posting is provided "AS IS" with no warranties, and confers no rights

-----Original Message-----
From: Avinash Kumar [mailto:xxxxx@commvault.com]
Sent: Thursday, February 13, 2003 12:12 PM
To: NT Developers Interest List
Subject: [ntdev] Creating a Device Object on Demand.

?
?
Hi All,
?
Can I create a Device Object the way we do in AddDevice Routine. Will all the other PnP methods like start device etc be called on the new device object.
?
I have a filter driver (with unnamed device object). Based on an IOCTL I have to expose a read only version of the device which should also be named so that user can access it.
?
Any other suggestion/pointers for doing this is welcomed.
?
Thanks.
Avi

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To unsubscribe send a blank email to xxxxx@lists.osr.com

3

Thanks Doron,
This article was really helpful. I am working on this using this approach
hope this works :slight_smile: Will get back if I face more problems.
Avi

-----Original Message-----
From: Doron Holan [mailto:xxxxx@windows.microsoft.com]
Sent: Thursday, February 13, 2003 3:32 PM
To: NT Developers Interest List
Subject: [ntdev] RE: Creating a Device Object on Demand.

If you want the user to be able to use device interfaces, you will have to
become a bus driver. If you want to create a named device object, then
check out this kb article:

http://support.microsoft.com/default.aspx?scid=kb;en-us;262305

This may not describe 100% of what you want, but will give some good
indications on how to proceed.

D

This posting is provided "AS IS" with no warranties, and confers no rights

-----Original Message-----
From: Avinash Kumar [mailto:xxxxx@commvault.com]
Sent: Thursday, February 13, 2003 12:12 PM
To: NT Developers Interest List
Subject: [ntdev] Creating a Device Object on Demand.

?
?
Hi All,
?
Can I create a Device Object the way we do in AddDevice Routine. Will all
the other PnP methods like start device etc be called on the new device
object.
?
I have a filter driver (with unnamed device object). Based on an IOCTL I
have to expose a read only version of the device which should also be named
so that user can access it.
?
Any other suggestion/pointers for doing this is welcomed.
?
Thanks.
Avi

You are currently subscribed to ntdev as: xxxxx@windows.microsoft.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

You are currently subscribed to ntdev as: xxxxx@commvault.com
To unsubscribe send a blank email to xxxxx@lists.osr.com