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To: jeffa@sybase.com (Jeff Anuszczyk)
cc: freebsd-questions@FreeBSD.org
Subject: Re: Help with 1.1.5.1 and SLIP (problem with handling hangups) 
In-reply-to: Your message of "Thu, 23 Feb 95 12:08:03 EST."
             <9502231708.AA18148@cottonwood.sybgate.sybase.com> 
From: David Greenman <davidg@Root.COM>
Reply-To: davidg@Root.COM
Date: Thu, 23 Feb 1995 09:16:48 -0800
Sender: questions-owner@FreeBSD.org
Precedence: bulk

>it properly reports a HUP to the slattach process.  This causes us to
>reissue the chat script.  Almost immediately the chat script gets an
>error saying it is unable to write to the port.  This causes a new HUP to
>be seen by the slattach process... which launches a new chat script... etc.
>
>   Well... this is a major league bummer since I need the slattach to
>be able to automatically redial if it looses the connection.  Kind of
>defeats a perm. connection if it's only as permanent as the initial
>dialup.  Uhg.
>
>   Does anyone know of a way around this problem?  Any patches to sio.c
>or slattach that would make it handle this better?

   Use the attached patch.

-DG

Index: tty.c
===================================================================
RCS file: /home/cvs/386BSD/src/sys/kern/tty.c,v
retrieving revision 1.32
diff -c -r1.32 tty.c
*** 1.32	1994/05/30 21:53:17
--- tty.c	1994/10/06 22:53:33
***************
*** 559,564 ****
--- 559,565 ----
  				return (error);
  			}
  			if (t->c_cflag & CLOCAL && !(tp->t_cflag & CLOCAL)) {
+ 				tp->t_state &= ~TS_ZOMBIE;
  				wakeup(TSA_CARR_ON(tp));
  				ttwakeup(tp);
  				ttwwakeup(tp);