Hello all,
I found that the previous problem I reported was
because of specifying a rather huge buffer size (68
kB) for a buffered transfer request. I reduced that
and that solved the problem.
I have another issue that stumps me: I have a driver
that receives data from an user application (say A),
to complete read requests (say B). The device uses
DIRECT IO for data transfers, and I use BUFFERED
method for the IOCTL calls from the user application
to push data to the device. What I see is, the data I
send from the user application (A) to the device is
correct, but after copying the contents of this buffer
to the read request buffer (B’s buffer), and
completing the Irp, I dont see the same data in the
original read request buffer. (I check this from user
mode again in B’s completed buffer) Any ideas why?
regards
DK
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