Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!swrinde!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!pacbell.com!tandem!zorch!hico2!sonyd1.Broadcast.Sony.COM!blilly.UUCP!bruce
From: bruce@balilly (Bruce Lilly)
Newsgroups: comp.sys.3b1
Subject: Re: more on the HFC saga
Message-ID: <1991May17.223119.14806@blilly.UUCP>
Date: 17 May 91 22:31:19 GMT
References: <1991May13.010730.4743@fithp>
Sender: usenet@blilly.UUCP (News Administrator)
Distribution: na
Organization: Bruce Lilly, Flushing, NY
Lines: 14
Nntp-Posting-Host: balilly

In article <1991May13.010730.4743@fithp> mhw@fithp (Marc Weinstein) writes:
>
>First and foremost, the /etc/hfc_ctl program appears to ENABLE HFC, not turn
>it on.  It seems that this program (somehow) configures the driver so that

It uses an ioctl, which is listed in recent /usr/include/sys/termio.h's as:
#define TCHFCCTL	(TIOC|15)
It is not in old termio.h's.

ioctl(fd, TCHFCCTL, 1) is equivalent to /etc/hfc_ctl +/dev/ttyNNN
ioctl(fd, TCHFCCTL, 0) is equivalent to /etc/hfc_ctl -/dev/ttyNNN

-- 
	Bruce Lilly		blilly!balilly!bruce@sonyd1.Broadcast.Sony.COM