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From: russo@chaos.utexas.edu (Thomas Russo)
Newsgroups: comp.sys.sgi
Subject: use of SGTTY.H and stuff involving IOCTLs
Message-ID: <22483@ut-emx.UUCP>
Date: 18 Dec 89 21:37:25 GMT
Sender: news@ut-emx.UUCP
Reply-To: russo@chaos.utexas.edu (Thomas Russo)
Distribution: usa
Organization: University of Texas at Austin, Center for Nonlinear Dynamics
Lines: 28


I've been trying to port a program which uses facilities of sgtty.h,
namely it uses the sgttyb structure to set CBREAK mode and turn off
echoing with a call to ioctl like this:

ioerr = ioctl(fileno(stdin), TIOCGETP, &tty_orig);	
		/* get std input characteristics */
...
		ttybuf = tty_new = tty_orig;						/* make a copy of tty control structure */
		tty_new.sg_flags = (tty_new.sg_flags & ~ECHO & ~CRMOD)
			| CBREAK;
...
		ioctl(fileno(stdin), TIOCSETP, &tty_new);
			/* set flags  */

Is there any slick way to take out this kind of
incompatibility when porting to the iris4d?   I can't find any
reference to CBREAK mode in the FM so RTFM is so far no good. 
Also, repeated reference is made to requests like TIOCSET[CP] and the
like, and I have no way of knowing what the correct functions are on
the iris.   Any hints?



Thomas Russo
Center for Nonlinear Dynamics, University of Texas at Austin          
russo@chaos.utexas.edu or phib421@utchpc.bitnet
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