irp->userbuffer or irp->iostatus in a minifilter callback

NTFSD
1

I looked through the archives and could not seem to find out if it was
possile to have access to irp->userbuffer and irp->iostatus in pre and post
(FLT_OPERATION_REGISTRATION) callback functions in a minifilter.
The FLT_IO_PARAMETER_BLOCK was close but did not contain either of those
fields. I need to be able to modify irp->userbuffer directly and cannot seem
to figure out how to access it in a minifilter.

Any help anyone could provide would be appriciated.

Jason

2

Jason,

The swapbuffers sample in the ifs kit does both of these things. I
would start there.

Regards

Ben

From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Jason T
Sent: 12 October 2005 05:14
To: Windows File Systems Devs Interest List
Subject: [ntfsd] irp->userbuffer or irp->iostatus in a minifilter
callback

I looked through the archives and could not seem to find out if it was
possile to have access to irp->userbuffer and irp->iostatus in pre and
post (FLT_OPERATION_REGISTRATION) callback functions in a minifilter.
The FLT_IO_PARAMETER_BLOCK was close but did not contain either of those
fields. I need to be able to modify irp->userbuffer directly and cannot
seem to figure out how to access it in a minifilter.

Any help anyone could provide would be appriciated.

Jason
— Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17 You are currently subscribed
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3

Thank you, I never thought to look inside that example. Only 1 or 2 I did
not look at and it figures. Thanks again.

On 10/12/05, Ben Curley wrote:
>
> Jason,
> The swapbuffers sample in the ifs kit does both of these things. I would
> start there.
> Regards
> Ben
>
> ------------------------------
> From: xxxxx@lists.osr.com [mailto:
> xxxxx@lists.osr.com] *On Behalf Of *Jason T
> Sent: 12 October 2005 05:14
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] irp->userbuffer or irp->iostatus in a minifilter
> callback
>
> I looked through the archives and could not seem to find out if it was
> possile to have access to irp->userbuffer and irp->iostatus in pre and post
> (FLT_OPERATION_REGISTRATION) callback functions in a minifilter.
> The FLT_IO_PARAMETER_BLOCK was close but did not contain either of those
> fields. I need to be able to modify irp->userbuffer directly and cannot seem
> to figure out how to access it in a minifilter.
>
> Any help anyone could provide would be appriciated.
>
> Jason
> — Questions? First check the IFS FAQ at
> https://www.osronline.com/article.cfm?id=17 You are currently subscribed
> to ntfsd as: unknown lmsubst tag argument: ‘’ To unsubscribe send a blank
> email to xxxxx@lists.osr.com
> —
> Questions? First check the IFS FAQ at
> https://www.osronline.com/article.cfm?id=17
>
> You are currently subscribed to ntfsd as: unknown lmsubst tag argument: ‘’
>
> To unsubscribe send a blank email to xxxxx@lists.osr.com