glibc/termios/speed.c

73 lines
1.9 KiB
C

/* `struct termios' speed frobnication functions. 4.4 BSD/generic GNU version.
Copyright (C) 1991,1992,1993,1996,1997,2002 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. */
#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->__ospeed;
}
/* Return the input baud rate stored in *TERMIOS_P. */
speed_t
cfgetispeed (termios_p)
const struct termios *termios_p;
{
return termios_p->__ispeed;
}
/* Set the output baud rate stored in *TERMIOS_P to SPEED. */
int
cfsetospeed (termios_p, speed)
struct termios *termios_p;
speed_t speed;
{
if (termios_p == NULL)
{
__set_errno (EINVAL);
return -1;
}
termios_p->__ospeed = speed;
return 0;
}
libc_hidden_def (cfsetospeed)
/* Set the input baud rate stored in *TERMIOS_P to SPEED. */
int
cfsetispeed (termios_p, speed)
struct termios *termios_p;
speed_t speed;
{
if (termios_p == NULL)
{
__set_errno (EINVAL);
return -1;
}
termios_p->__ispeed = speed;
return 0;
}
libc_hidden_def (cfsetispeed)