From owner-freebsd-hardware Thu Apr 17 09:31:56 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id JAA19002 for hardware-outgoing; Thu, 17 Apr 1997 09:31:56 -0700 (PDT) Received: from time.cdrom.com (time.cdrom.com [204.216.27.226]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id JAA18997 for ; Thu, 17 Apr 1997 09:31:53 -0700 (PDT) Received: from time.cdrom.com (localhost.cdrom.com [127.0.0.1]) by time.cdrom.com (8.8.5/8.6.9) with ESMTP id JAA06486; Thu, 17 Apr 1997 09:30:20 -0700 (PDT) To: Brett Glass cc: dk+@ua.net, freebsd-hardware@FreeBSD.org Subject: Re: talk to I/O Devices. In-reply-to: Your message of "Thu, 17 Apr 1997 09:21:03 MDT." <3.0.1.32.19970417092103.0070f97c@lariat.org> Date: Thu, 17 Apr 1997 09:30:19 -0700 Message-ID: <6484.861294619@time.cdrom.com> From: "Jordan K. Hubbard" Sender: owner-hardware@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > control applications! Also, the sample code in previous messages in > this thread seems to indicate that one can read and write directly. That's correct. Opening /dev/io simply grants you the permissions, it in no way acts as an "I/O gate" or otherwise gets involved in any part of the transaction after it's opened. It's just a permissions hack and nothing more. Jordan