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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #pragma weak _cfsetispeed = cfsetispeed 33 34 #include "lint.h" 35 #include <sys/types.h> 36 #include <sys/termios.h> 37 38 /* 39 * sets the input baud rate stored in c_cflag to speed 40 */ 41 42 int 43 cfsetispeed(struct termios *termios_p, speed_t speed) 44 { 45 /* 46 * If the input speed is zero, set it to output speed 47 */ 48 if (speed == 0) { 49 speed = termios_p->c_cflag & CBAUD; 50 if (termios_p->c_cflag & CBAUDEXT) 51 speed += (CBAUD + 1); 52 } 53 54 if ((speed << 16) > CIBAUD) { 55 termios_p->c_cflag |= CIBAUDEXT; 56 speed -= ((CIBAUD >> 16) + 1); 57 } else 58 termios_p->c_cflag &= ~CIBAUDEXT; 59 termios_p->c_cflag = 60 (termios_p->c_cflag & ~CIBAUD) | ((speed << 16) & CIBAUD); 61 return (0); 62 } 63