Date: Sat, 26 Jul 2003 19:19:35 -0400 (EDT) From: Jerry McAllister <jerrymc@clunix.cl.msu.edu> To: admin@asarian-host.net (Mark) Cc: freebsd-questions@freebsd.org Subject: Re: Unable to open /dev/io Message-ID: <200307262319.h6QNJZSG010945@clunix.cl.msu.edu> In-Reply-To: <200307262149.H6QLN203081893@asarian-host.net> from "Mark" at Jul 26, 2003 09:49:02 PM
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> > Earlier, I had asked a question on how to write a byte to the parallel port. > And Daan Vreeken was kind enough to point me to a litle c-source that uses > /dev/io. > > Unfortunately, as I just found out, when I raise kern.securelevel to 2 > (FreeBSD 4.7R), I can no longer open /dev/io for writing. :( That means I > can no longer use this method; because there is no way I will allow my > production server to run at kern.securelevel lower than 2. Which means I am > back to square one. :( > > Sigh. Is there then no way to write a simple 0 or 1 to the parallel port, > without compromizing the security of the server at large? Do you really need to set the secure level to 2? What for? ////jerry > > Thanks, > > - Mark >
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