without cencel irp penging..

NTFSD
1

Hi. all.

I met the system crash when i unload my test filter.
The message on the blue screen is one about doesn’t cancel a irp in pending.

(
my completion routine has just following code.

if(Irp->PendingReturned) IoMarkIrpPending(Irp);
return Irp->IoStatus.Status;
)

How can i handle this? (using IoSetCancelRoutine ?)
Best Regards, park.

2

Unloading file system filter drivers is really a bad ideea. During development, when you can afford every now and then a crash, you can build a system to count IRPs and unlaod only if there are no IRP’s pending at all.

Dan

“gyver-park” wrote in message news:xxxxx@ntfsd…
Hi. all.

I met the system crash when i unload my test filter.
The message on the blue screen is one about doesn’t cancel a irp in pending.

(
my completion routine has just following code.

if(Irp->PendingReturned) IoMarkIrpPending(Irp);
return Irp->IoStatus.Status;
)

How can i handle this? (using IoSetCancelRoutine ?)
Best Regards, park.

3

Thanks Dan.
----- Original Message -----
From: Dan Partelly
Newsgroups: ntfsd
To: File Systems Developers
Sent: Friday, July 12, 2002 1:15 AM
Subject: [ntfsd] Re: without cencel irp penging…

Unloading file system filter drivers is really a bad ideea. During development, when you can afford every now and then a crash, you can build a system to count IRPs and unlaod only if there are no IRP’s pending at all.

Dan

4

Windows NT does not support the unloading of file system filters. If you look at the FILESPY and SFILTER samples in the XP version of the IFSKit they show a way you can unload your filter in the CHK’d version of your filter (during development). This method will crash occasionally.

A production filter should never support unloading.

Neal Christiansen
Microsoft File System Filter Group

This posting is provided “AS IS” with no warranties, and confers no rights.

-----Original Message-----
From: gyver-park [mailto:xxxxx@jlandsoft.com]
Sent: Thursday, July 11, 2002 09:02 AM
To: File Systems Developers
Subject: [ntfsd] without cencel irp penging…

Hi. all.
?
I?met the system crash?when i unload my test filter.
The message on the blue screen is one about doesn’t cancel a irp in pending.
?
(
my completion routine?has just following code.
?
??? if(Irp->PendingReturned)?IoMarkIrpPending(Irp);
??? return Irp->IoStatus.Status;
)
?
?
How can i handle this? (using IoSetCancelRoutine ?)
Best Regards, park.
?
?

5

“return Irp->IoStatus.Status;” is wrong.
Completion routine can only return STATUS_SUCCESS or STATUS_MORE_PROCESSING_REQUIRED.

Max

----- Original Message -----
From: gyver-park
To: File Systems Developers
Sent: Thursday, July 11, 2002 8:01 PM
Subject: [ntfsd] without cencel irp penging…

Hi. all.

I met the system crash when i unload my test filter.
The message on the blue screen is one about doesn’t cancel a irp in pending.

(
my completion routine has just following code.

if(Irp->PendingReturned) IoMarkIrpPending(Irp);
return Irp->IoStatus.Status;
)

How can i handle this? (using IoSetCancelRoutine ?)
Best Regards, park.

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