Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!sun-barr!ccut!titcca!anprda!qmfl!spee
From: spee@qmfl.jrdc.go.jp (Paul SPEE)
Newsgroups: comp.unix.questions
Subject: Re: mmap in cdevsw
Message-ID: <508@qmfl.jrdc.go.jp>
Date: 28 Dec 89 00:47:10 GMT
References: <1989Dec27.132716.7274@granite.cr.bull.com>
Reply-To: spee@paul.jrdc.go.jp (Paul SPEE)
Organization: Research Development Corporation of Japan, Tokyo, Japan
Lines: 15

In article <1989Dec27.132716.7274@granite.cr.bull.com> freedman@granite.UUCP (Jerome Freedman) writes:
>
>  In the cdevsw ( I hope I got that right ) in Berkeley
>systems I see an mmap. I know what the other stuff is
>supposed to do but could some one explain CLEARLY what
>this does, why I would use it and maybe even pointers
>to relevant examples.

The mmap() interface allows for memory mapped files, but was
never implemented in BSD. For for information, see
"4.3BSD UNIX Operating System" by Leffler, McKusick, Karels
and Quarterman.

Paul Spee
spee%jrdc.go.jp@RELAY.CS.NET