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stty.c revision 1.3 
      1 /*
      2  * Copyright (c) 1994 Christopher G. Demetriou
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *      This product includes software developed by Christopher G. Demetriou.
     16  * 4. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 #ifndef lint
     33 __RCSID("$NetBSD: stty.c,v 1.3 1999/09/16 11:45:46 lukem Exp $");
     34 #endif /* not lint */
     35 
     36 #include <assert.h>
     37 #include <errno.h>
     38 #include <sgtty.h>
     39 
     40 /*
     41  * Set tty modes.
     42  * This was defined in ioctl_compat.h as:
     43  *	#define	stty(fd, tty)	ioctl(fd, TIOCSETP, tty)
     44  */
     45 int
     46 stty(fd, tty)
     47 	int fd;
     48 	struct sgttyb *tty;
     49 {
     50 
     51 	_DIAGASSERT(fd != -1);
     52 	_DIAGASSERT(tty != 0);
     53 #ifdef _DIAGNOSTIC
     54 	if (fd == -1) {
     55 		errno = EBADF;
     56 		return (-1);
     57 	}
     58 	if (tty == 0) {
     59 		errno = EINVAL;
     60 		return (-1);
     61 	}
     62 #endif
     63 
     64 	return (ioctl(fd, TIOCSETP, tty));
     65 }
     66