Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mit-eddie!apollo!weber_w
From: weber_w@apollo.COM (Walt Weber)
Newsgroups: comp.sys.apollo
Subject: Re: fifo files on Apollo-systems.
Keywords: fifo files, interprocess communication
Message-ID: <43d10afb.10b48@apollo.COM>
Date: 14 Jun 89 02:08:00 GMT
References: <1176@draken.nada.kth.se>
Reply-To: weber_w@apollo.COM (Walt Weber)
Organization: Apollo Computer, Chelmsford, MA
Lines: 39

In article <1176@draken.nada.kth.se> larss@nada.kth.se (Lars Schylberg) writes:
>A problem for unix programmers.
>
>I have a problem how to create fifo files on the Apollo
>system.  We are currently running BSD4.2 and 9.7.1.

I believe that you will find that FIFO's were not supported under bsd4.2,
and were added to bsd4.3.

You would be able to create the fifo's using the Sys5 mknod which came with
your Domain/IX (since you are running under sr9), or by compiling your program
which calls mknod(2) under the sys5 systype.

>When we chance to OS 10.1, (we just have it on 1 out 8 nodes now)
>I've seen there is a command mknod(8) with the syntax:
>/etc/mknod name [b] / [c] major minor
>
>I suppose that I want to create a character device with c
>but what do I set major and minor to.
>Lars Schylberg                       Email: larss@fmi.kth.se

No, it is not a character special device.  The released software does not
appear to have a way to create the FIFO using bsd4.3 mknod(8).  You should
be able to write a short program (under bsd4.3) which would make the call to
mknod(2) with the mode bit for S_IFIFO set (see sys/stat.h), or use the
Sys5.3 version of mknod(8) (found listed as mknod(1m)).

I have submitted apr #dd1ff in your name against this problem, and you will
be receiving an official answer from us in writing.  Sorry for the problem.

...walt...

PS - Note that you can submit apr's via email (if you have internet access);
     type 'man mkapr' on an sr10 system.

-- 
Walt Weber                    Apollo Computer
(508) 256-6600 x8315          People's Republic of Massachusetts
-The views expressed herein are personal, and not binding on ANYONE-