How to go throughout a Device stack?

NTDEV
1

Hi,everyone!
In xp,there is IoGetLowerDeviceObject.
In win2000,how to implement that function?
And how to Get Upper Device Object?
If I want to get pdo of a Device Stack,how to do?
3x!

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2

In a function driver your lower device object and PDO can be determined in
your AddDevice routine. Additonally you can ask for the PDO of any PnP
device by using IRP_MN_QUERY_DEVICE_RELATIONS type TargetDeviceRelations.

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of f
Sent: Wednesday, November 03, 2004 2:47 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] How to go throughout a Device stack?

Hi,everyone!
In xp,there is IoGetLowerDeviceObject.
In win2000,how to implement that function?
And how to Get Upper Device Object?
If I want to get pdo of a Device Stack,how to do?
3x!

–http://www.eyou.com
–?ȶ??ɿ??ĵ??? ???ʼ? ?ƶ???ǩ ???
???洢…???δ??

–http://vip.eyou.com
–???¼???VIP??? ע???û???

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

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