| /* `struct termios' speed frobnication functions. Linux version. |
| Copyright (C) 1991, 92, 93, 95, 96, 97, 98, 2000 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* Modified by Jeff Johnston, May 27, 2002 to remove kernel hack |
| as we simply ignore a cfisetspeed of 0 instead of treating it specially */ |
| |
| #include <stddef.h> |
| #include <errno.h> |
| #include <termios.h> |
| |
| /* Return the output baud rate stored in *TERMIOS_P. */ |
| speed_t |
| cfgetospeed (termios_p) |
| const struct termios *termios_p; |
| { |
| return termios_p->c_cflag & (CBAUD | CBAUDEX); |
| } |
| |
| /* Return the input baud rate stored in *TERMIOS_P. |
| For Linux there is no difference between input and output |
| speed. */ |
| speed_t |
| cfgetispeed (termios_p) |
| const struct termios *termios_p; |
| { |
| return termios_p->c_cflag & (CBAUD | CBAUDEX); |
| } |
| |
| /* Set the output baud rate stored in *TERMIOS_P to SPEED. */ |
| int |
| cfsetospeed (termios_p, speed) |
| struct termios *termios_p; |
| speed_t speed; |
| { |
| if ((speed & ~CBAUD) != 0 |
| && (speed < B57600 || speed > __MAX_BAUD)) |
| { |
| errno = (EINVAL); |
| return -1; |
| } |
| |
| termios_p->c_cflag &= ~(CBAUD | CBAUDEX); |
| termios_p->c_cflag |= speed; |
| |
| return 0; |
| } |
| |
| /* Set the input baud rate stored in *TERMIOS_P to SPEED. |
| Although for Linux there is no difference between input and output |
| speed, the numerical 0 is a special case for the input baud rate. It |
| should set the input baud rate to the output baud rate so we do |
| nothing. */ |
| int |
| cfsetispeed (termios_p, speed) |
| struct termios *termios_p; |
| speed_t speed; |
| { |
| if ((speed & ~CBAUD) != 0 |
| && (speed < B57600 || speed > __MAX_BAUD)) |
| { |
| errno = (EINVAL); |
| return -1; |
| } |
| |
| if (speed != 0) |
| { |
| termios_p->c_cflag &= ~(CBAUD | CBAUDEX); |
| termios_p->c_cflag |= speed; |
| } |
| |
| return 0; |
| } |