send ioctl directly to driver object without regard to device object?

Hi,

Is it possible to send IOCTL (or otherwise communicate) directly with a
driver object that may have no device objects? This would be in lieu of
creating a "control" device object.

TIA!!

Device objects are the target of I/O operations, so what you're suggesting
doesn't make sense. You'll note that IoCallDriver takes a device object as a
parameter and not a driver object.

-scott

--
Scott Noone
Consulting Associate
OSR Open Systems Resources, Inc.
http://www.osronline.com


"David F." <> wrote in message
news:AFE1B56C-69DA-4439-BE55-...
> Hi,
>
> Is it possible to send IOCTL (or otherwise communicate) directly with a
> driver object that may have no device objects? This would be in lieu of
> creating a "control" device object.
>
> TIA!!
>
>

"David F." <> wrote in message
news:AFE1B56C-69DA-4439-BE55-...
> Hi,
>
> Is it possible to send IOCTL (or otherwise communicate) directly with a
> driver object that may have no device objects? This would be in lieu of
> creating a "control" device object.

To send an ioctl without a device - not possible (because can't get a
handle, unless you CreateFile on something).
Otherwise communicate with a driver: yes, possible.
--pa