filtermanager and IRP_MJ_NETWORK_QUERY_OPEN

NTFSD
1

I’ve been playing around with a minifilter, and I’m wondering if there is support for every function in there.

I am successful in getting a callback for the pre operation for IRP_MJ_NETWORK_QUERY_OPEN, but I don’t get any post operation.

Is the post operation not supported for this??

I’ve tried both FLT_PREOP_SYNCHRONIZE and FLT_PREOP_SUCCESS_WITH_CALLBACK without ever getting a callback…

Thanks for any response!

2

To be honest, I don’t know such IRP_MJ code. There is FileNetworkOpenInformation
class information for IRP_MJ_QUERY_INFORMATION. Which WDK do you use?
-bg

3

It’s not a “real” IRP, fltmgr wraps FastIoQueryOpen with it:

http://msdn2.microsoft.com/en-us/library/ms793843.aspx

I don’t know why the OP isn’t getting a post-op for it though.

~Eric

-----Original Message-----
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[mailto:xxxxx@lists.osr.com] On Behalf Of
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Sent: Thursday, December 13, 2007 7:48 AM
To: Windows File Systems Devs Interest List
Subject: RE:[ntfsd] filtermanager and IRP_MJ_NETWORK_QUERY_OPEN

To be honest, I don’t know such IRP_MJ code. There is
FileNetworkOpenInformation class information for
IRP_MJ_QUERY_INFORMATION. Which WDK do you use?
-bg

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4

This is FltMgr’s constant not used outside FltMgr in the IRPs sent by IO
manager.

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

wrote in message news:xxxxx@ntfsd…
> To be honest, I don’t know such IRP_MJ code. There is
FileNetworkOpenInformation
> class information for IRP_MJ_QUERY_INFORMATION. Which WDK do you use?
> -bg
>

5

Yes, you’re right, this is a FltMgr constant, hence why I say I’m playing around with a minifilter :wink:

the problem is that I’m not getting a post operation for this filter manager operation.

Anybody have any idea why I would not get a post operation in the filter manager filter driver for operation IRP_MJ_NETWORK_QUERY_OPEN?

Thanks.