Path: utzoo!attcan!uunet!mcvax!unido!fauern!faui44!immd3.informatik.uni-erlangen.de!rtregn
From: rtregn@immd3.informatik.uni-erlangen.de (Robert Regn)
Newsgroups: comp.os.minix
Subject: Problems with the read system call and vol.c
Keywords: vol.c
Message-ID: <638@faui44.informatik.uni-erlangen.de>
Date: 16 Sep 88 09:47:15 GMT
Organization: IMMD III, University of Erlangen, W-Germany
Lines: 26


I have  gotten a strange behavior of the read system call ruuning the command

tar c . - |vol 360 /dev/fd0  &
(the & because  i don't want to waste a lot of time)

But I saw that the vol runs without waiting for a return when a floppy is to
change. I don't had typed anything since the command !

Printing the return value of 	'read(tty,   ... ' I get -1;
and using perror  'no such  process' !!!
This error can't occur in read.

Is the bug in the system or in my configuration ??
Please try  the command, too.

A little bug in vol.c (you see it only if you need more then 9 disks):


120c120
< 	out[2] = '0' + (n/10);
---
> 	out[0] = '0' + (n/10);

					Robert Regn
					rtregn.faui32.uucp