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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.unix.questions,comp.unix.wizards
Subject: Re: 4.2BSD / System V ioctl questions
Message-ID: <6349@brl-smoke.ARPA>
Date: Thu, 27-Aug-87 15:48:13 EDT
Article-I.D.: brl-smok.6349
Posted: Thu Aug 27 15:48:13 1987
Date-Received: Sat, 29-Aug-87 10:31:30 EDT
References: <299@rruxa.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 16
Xref: mnetor comp.unix.questions:3760 comp.unix.wizards:3927

In article <299@rruxa.UUCP> jpage@rruxa.UUCP (J Page) writes:
>	1.	how in System V can CBREAK / ~ECHO, be emulated ????

Refer to TERMIO(7) (annoyingly in the Adminstrator's Reference Manual
instead of the PRM in many UNIX System V documentation sets).  You
need to figure out what CBREAK mode is supposed to be.  Typically,
disable ICANON, keep ISIG enabled, and set c_cc[VMIN] to 1 and
c_cc[VTIME] to 0.  To disable echo, clear all four ECHO* flags.

>	2.	are there (stty and gtty)-like calls available in System V.

The above operations are done via ioctl() using the TCSETA or TCSETAW
command codes as described in TERMIO(7).  Many older UNIX System V
implementations also support old-style gtty()/stty(), which are similar
to those on 4BSD, but different in detail (in particular, there is no
CBREAK bit).  You should avoid using gtty()/stty().