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/* `struct termios' speed frobnication functions. Linux version.
Copyright (C) 1991, 92, 93, 95, 96, 97, 98 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#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. */
strong_alias (cfgetospeed, cfgetispeed);
/* 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 > B460800))
{
__set_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. */
int
cfsetispeed (termios_p, speed)
struct termios *termios_p;
speed_t speed;
{
if ((speed & ~CBAUD) != 0
&& (speed < B57600 || speed > B460800))
{
__set_errno (EINVAL);
return -1;
}
if (speed != 0)
{
termios_p->c_cflag &= ~(CBAUD | CBAUDEX);
termios_p->c_cflag |= speed;
}
return 0;
}
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