From owner-freebsd-hackers  Tue Jul 25 14:07:38 1995
Return-Path: hackers-owner
Received: (from majordom@localhost)
          by freefall.cdrom.com (8.6.11/8.6.6) id OAB12366
          for hackers-outgoing; Tue, 25 Jul 1995 14:07:38 -0700
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.34])
          by freefall.cdrom.com (8.6.11/8.6.6) with ESMTP id OAA12353
          for <hackers@freebsd.org>; Tue, 25 Jul 1995 14:07:33 -0700
Received: (from bde@localhost) by godzilla.zeta.org.au (8.6.9/8.6.9) id HAA09790; Wed, 26 Jul 1995 07:01:42 +1000
Date: Wed, 26 Jul 1995 07:01:42 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199507252101.HAA09790@godzilla.zeta.org.au>
To: bde@zeta.org.au, terry@cs.weber.edu
Subject: Re: dial up at > 9600 baud
Cc: ache@astral.msk.su, hackers@freebsd.org, harry@hgac.com,
        jkh@violet.berkeley.edu
Sender: hackers-owner@freebsd.org
Precedence: bulk

>The one remaining issue is that the partial open unsetting of NDELAY
>needs to still work for device binary compatability for things like IBCS2.

This should be handled in the ibcs2 emulator :-).  I don't think the
version that you want is implemented.  If O_NONBLOCK is turned off, then
I/O blocks if there is no carrier and no CLOCAL.

Bruce