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Date: Thu, 23 Oct 1997 10:54:24 -0700 (PDT)
From: "Jamil J. Weatherbee" <jamil@trojanhorse.ml.org>
To: Terry Lambert <tlambert@primenet.com>
cc: thorpej@nas.nasa.gov, joerg_wunsch@uriah.heep.sax.de,
        freebsd-hackers@FreeBSD.ORG
Subject: Re: Possible SERIOUS bug in open()? (Big time bug)
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Yep, tried reading an ioport on my service providers freebsd machine,
works fine.  /dev/io is probably not the first and probably won't be the
last driver with this problem, in other works force to F_READ or F_WRITE.
That is precisely what I did in my dio driver because I depend on F_WRITE
and/or F_READ to be set to tell me about what the user wants.