Hi All,
I have a filter driver, which layered above the
disk class driver. It filters all read and write IRPs
from the upper drivers. I have a upper driver, which
creates Read/Write IRPs and pass down to the disk
driver. My filter driver needs to identify which IRPs
are from my uppder driver. I looked at the
IO_STACK_LOCATION and IRP data structure. There seems
no good data members to use for this purpose. Please
help if you have any information.
Thanks
Robert
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