access disk from a lower filter

NTDEV
1

Hi all,

At what moment I can access a disk from my disk lower filter driver? Can I do it right after I attach to a stack in the AddDevice routine? I’d like to roll IRP’s to the lower-level driver.

Thank you,
Roman

2

not until the lower stack has completed IRP_MN_PNP/IRP_MN_START_DEVICE
successfully.

-p

From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Roman Kudinov
Sent: Thursday, July 21, 2005 11:37 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] access disk from a lower filter

Hi all,

At what moment I can access a disk from my disk lower filter driver? Can
I do it right after I attach to a stack in the AddDevice routine? I’d
like to roll IRP’s to the lower-level driver.

Thank you,
Roman

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

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3

No, wait for MN_START_DEVICE, pass it down, then catch in by the completion routine. After this you can send your own IRPs down.

Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
xxxxx@storagecraft.com
http://www.storagecraft.com

----- Original Message -----
From: Roman Kudinov
Newsgroups: ntdev
To: Windows System Software Devs Interest List
Sent: Friday, July 22, 2005 10:36 AM
Subject: [ntdev] access disk from a lower filter

Hi all,

At what moment I can access a disk from my disk lower filter driver? Can I do it right after I attach to a stack in the AddDevice routine? I’d like to roll IRP’s to the lower-level driver.

Thank you,
Roman

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

You are currently subscribed to ntdev as: unknown lmsubst tag argument: ‘’
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