1.\" 2.\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for 3.\" permission to reproduce portions of its copyrighted documentation. 4.\" Original documentation from The Open Group can be obtained online at 5.\" http://www.opengroup.org/bookstore/. 6.\" 7.\" The Institute of Electrical and Electronics Engineers and The Open 8.\" Group, have given us permission to reprint portions of their 9.\" documentation. 10.\" 11.\" In the following statement, the phrase ``this text'' refers to portions 12.\" of the system documentation. 13.\" 14.\" Portions of this text are reprinted and reproduced in electronic form 15.\" in the SunOS Reference Manual, from IEEE Std 1003.1, 2004 Edition, 16.\" Standard for Information Technology -- Portable Operating System 17.\" Interface (POSIX), The Open Group Base Specifications Issue 6, 18.\" Copyright (C) 2001-2004 by the Institute of Electrical and Electronics 19.\" Engineers, Inc and The Open Group. In the event of any discrepancy 20.\" between these versions and the original IEEE and The Open Group 21.\" Standard, the original IEEE and The Open Group Standard is the referee 22.\" document. The original Standard can be obtained online at 23.\" http://www.opengroup.org/unix/online.html. 24.\" 25.\" This notice shall appear on any product containing this material. 26.\" 27.\" The contents of this file are subject to the terms of the 28.\" Common Development and Distribution License (the "License"). 29.\" You may not use this file except in compliance with the License. 30.\" 31.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 32.\" or http://www.opensolaris.org/os/licensing. 33.\" See the License for the specific language governing permissions 34.\" and limitations under the License. 35.\" 36.\" When distributing Covered Code, include this CDDL HEADER in each 37.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. 38.\" If applicable, add the following below this CDDL HEADER, with the 39.\" fields enclosed by brackets "[]" replaced with your own identifying 40.\" information: Portions Copyright [yyyy] [name of copyright owner] 41.\" 42.\" 43.\" Portions Copyright (c) 1992, X/Open Company Limited. All Rights Reserved. 44.\" Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved 45.\" Copyright 2019, Joyent, Inc. 46.\" 47.Dd January 20, 2019 48.Dt CFSETISPEED 3C 49.Os 50.Sh NAME 51.Nm cfsetispeed , 52.Nm cfsetospeed 53.Nd set input and output baud rate 54.Sh SYNOPSIS 55.In termios.h 56.Ft int 57.Fo cfsetispeed 58.Fa "struct termios *termios_p" 59.Fa "speed_t speed" 60.Fc 61.Ft int 62.Fo cfsetospeed 63.Fa "struct termios *termios_p" 64.Fa "speed_t speed" 65.Fc 66.Sh DESCRIPTION 67The 68.Fn cfsetispeed 69function sets the input baud rate stored in the 70structure pointed to by 71.Fa termios_p 72to 73.Fa speed . 74.Pp 75The 76.Fn cfsetospeed 77function sets the output baud rate stored in the 78structure pointed to by 79.Fa termios_p 80to 81.Fa speed . 82.Pp 83There is no effect on the baud rates set in the hardware until a subsequent 84successful call to 85.Xr tcsetattr 3C 86on the same 87.Vt termios 88structure. 89.Sh RETURN VALUES 90Upon successful completion, 91.Fn cfsetispeed 92and 93.Fn cfsetospeed 94return 95.Sy 0 . 96Otherwise 97.Sy \(mi1 98is returned, and 99.Va errno 100may be set to indicate the error. 101.Sh ERRORS 102The 103.Fn cfsetispeed 104and 105.Fn cfsetospeed 106functions may fail if: 107.Bl -tag -width EINVAL 108.It Er EINVAL 109The 110.Fa speed 111value is not a valid baud rate. 112.It Er EINVAL 113The value of 114.Fa speed 115is outside the range of possible speed values as specified in 116.In termios.h . 117.El 118.Sh INTERFACE STABILITY 119Standard 120.Sh MT-LEVEL 121MT-Safe 122.Pp 123Async-Signal-Safe 124.Sh SEE ALSO 125.Xr cfgetispeed 3C , 126.Xr tcsetattr 3C , 127.Xr attributes 5 , 128.Xr standards 5 , 129.Xr termio 7I 130