passing IOCTL to lower layer

Hi All,

I wanted to add functionality of passing Irp request to lower layer in
IMSamp code. I need a startup guideline to what so called WDM/WMI. Can I
have a stepped guideline for this? I wanted to devlop code to managable
IMSamp by user-mode application’s IOCTL from CreateFile and all other APIs.
I think present code of IMSamp have very basic implementation about Create,
Delete and IOCTL but there is nothing like to pass Irp to lower level. I’m
bit confused about the DEVICE_OBJECT structure too as IMSamp hardly works
with this structure and doesn’t find if it stores somewhere.
Thankx for time to write in.

– Sumit


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