Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!ihnp4!zehntel!hplabs!sri-unix!gwyn@BRL-TGR.ARPA
From: gwyn@BRL-TGR.ARPA
Newsgroups: net.unix-wizards
Subject: Re:  Help with nobuffered I/O in 4.1
Message-ID: <1308@sri-arpa.UUCP>
Date: Tue, 26-Jun-84 16:06:16 EDT
Article-I.D.: sri-arpa.1308
Posted: Tue Jun 26 16:06:16 1984
Date-Received: Sat, 30-Jun-84 04:01:00 EDT
Lines: 9

From:      Doug Gwyn <gwyn@BRL-TGR.ARPA>

The correct use of a file descriptor obtained from open(2) is to
use it as a parameter in read(2) and write(2) calls, finally close(2).
read(2) and write(2) are as unbuffered as you are going to get without
using a non-filesystem "raw disk" device (the only buffering is inside
the kernel and cannot be bypassed).

Really, this question belonged on info-unix rather than unix-wizards.