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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [cfspeed.c] - Rev 859
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/* `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; }
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