diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/speed.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/speed.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/speed.c b/sysdeps/unix/sysv/linux/alpha/speed.c new file mode 100644 index 0000000000..b61cfbbfe3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/speed.c @@ -0,0 +1,102 @@ +/* `struct termios' speed frobnication functions. Linux version. +Copyright (C) 1991, 1992, 1993, 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <stddef.h> +#include <errno.h> +#include <termios.h> + +static const speed_t speeds[] = + { + 0, + 50, + 75, + 110, + 134, + 150, + 200, + 300, + 600, + 1200, + 1800, + 2400, + 4800, + 9600, + 19200, + 38400, + 57600, + 115200, + 230400, + }; + + +/* Return the output baud rate stored in *TERMIOS_P. */ +speed_t +cfgetospeed (termios_p) + const struct termios *termios_p; +{ + speed_t retval = termios_p->c_cflag & (CBAUD | CBAUDEX); + + if (retval & CBAUDEX) + { + retval &= ~CBAUDEX; + retval |= CBAUD + 1; + } + + return retval; +} + +/* 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; +{ + register unsigned int i; + + if (termios_p == NULL) + { + errno = EINVAL; + return -1; + } + + /* This allows either B1200 or 1200 to work. XXX + Do we really want to try to support this, given that + fetching the speed must return one or the other? */ + + for (i = 0; i < sizeof (speeds) / sizeof (speeds[0]); ++i) + if (i == speed || speeds[i] == speed) + { + termios_p->c_cflag &= ~(CBAUD | CBAUDEX); + termios_p->c_cflag |= (i & CBAUD); + if (i & ~CBAUD) + termios_p->c_cflag |= CBAUDEX; + return 0; + } + + errno = EINVAL; + return -1; +} + +/* Set the input baud rate stored in *TERMIOS_P to SPEED. + For Linux there is no difference between input and output speed. */ +strong_alias (cfsetospeed, cfsetispeed); |