xref: /titanic_41/usr/src/lib/libc/port/gen/cfsetospeed.c (revision a2bb96e7d59f447f59bc306e53b7d00e38594667)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*	Copyright (c) 1988 AT&T	*/
30 /*	  All Rights Reserved  	*/
31 
32 
33 #pragma weak cfsetospeed = _cfsetospeed
34 #include "synonyms.h"
35 #include <sys/types.h>
36 #include <sys/termios.h>
37 
38 /*
39  * sets the output baud rate stored in c_cflag to speed
40  */
41 
42 int
43 cfsetospeed(struct termios *termios_p, speed_t speed)
44 {
45 	if (speed > CBAUD) {
46 		termios_p->c_cflag |= CBAUDEXT;
47 		speed -= (CBAUD + 1);
48 	} else
49 		termios_p->c_cflag &= ~CBAUDEXT;
50 
51 	termios_p->c_cflag =
52 	    (termios_p->c_cflag & ~CBAUD) | (speed & CBAUD);
53 	return (0);
54 }
55