WDF: how to set error for DeviceIOControl?

NTDEV
1

When I call OSRUSBFX2 sample driver with incorrect IOCTL code, OsrFxEvtIoDeviceControl function sets status = STATUS_INVALID_DEVICE_REQUEST and calls WdfRequestCompleteWithInformation. However, client’s DeviceIOControl still returns TRUE. How can I change this to FALSE, should I call WdfRequestCancelSentRequest for this?

Thanks.

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2

WdfRequestCancelSentRequest should only be called on a WDFREQUEST that is sent to a WDFIOTARGET. For a request that is processed in a queue callback without being sent, you should not call this API. What you describe sounds correct, can you send a code snippet to see what you are doing?

d

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From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Alex Farber
Sent: Monday, February 20, 2006 2:38 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] WDF: how to set error for DeviceIOControl?

When I call OSRUSBFX2 sample driver with incorrect IOCTL code, OsrFxEvtIoDeviceControl function sets status = STATUS_INVALID_DEVICE_REQUEST and calls WdfRequestCompleteWithInformation. However, client’s DeviceIOControl still returns TRUE. How can I change this to FALSE, should I call WdfRequestCancelSentRequest for this?
?
??? Thanks.

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3

Thank you, it was my mistake in user mode program. After setting error status in WdfRequestCompleteWithInformation DeviceIOControl really returns FALSE. In my case I used overlapped I/O, and error must be handled in GetOverlappedResult. The problem is solved.

Doron Holan wrote:
> What you describe sounds correct, can
you send a code snippet to see what you are doing?

Original question:
> When I call OSRUSBFX2 sample driver with incorrect IOCTL code,
OsrFxEvtIoDeviceControl function sets status = STATUS_INVALID_DEVICE_REQUEST and
calls WdfRequestCompleteWithInformation. However, client’s DeviceIOControl still
returns TRUE. How can I change this to FALSE, should I call
WdfRequestCancelSentRequest for this?

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