Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!jpl-devvax!lwall
From: lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall)
Newsgroups: comp.lang.perl
Subject: Re: my ioctl's don't work
Message-ID: <7742@jpl-devvax.JPL.NASA.GOV>
Date: 11 Apr 90 20:39:27 GMT
References: <1990Apr11.142002.26192@me.toronto.edu>
Reply-To: lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall)
Distribution: comp
Organization: Jet Propulsion Laboratory, Pasadena, CA
Lines: 17

In article <1990Apr11.142002.26192@me.toronto.edu> eastick@me.utoronto.ca (Doug Eastick) writes:
: I'm trying to get a program to work in cbreak mode.  I stole this
: from someone (Randal, I think).  I'm including sys/ioctl.h (after
: makelib'ing it).  The problem lies with the TIOCGETP ioctl:
: ***
: Can't ioctl TIOCGETP: Inappropriate ioctl for device at blah line 83.
: ***
: The answer is simple, I just don't know what it is :-(.  Any help is
: appreciated.  Thanks very much.

I'd suggest you check the value of $TIOCGETP at the point of the ioctl.
If it's 0 then you may need to say $TIOCGETP = &TIOCGETP; at some point.
Likewise for $TIOCSETP.

It's also possible the 'do' is failing for some reason.

Larry