diff options
Diffstat (limited to 'sysdeps/unix/bsd/sun/sunos4/speed.c')
-rw-r--r-- | sysdeps/unix/bsd/sun/sunos4/speed.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/sysdeps/unix/bsd/sun/sunos4/speed.c b/sysdeps/unix/bsd/sun/sunos4/speed.c new file mode 100644 index 0000000000..262d70fdfb --- /dev/null +++ b/sysdeps/unix/bsd/sun/sunos4/speed.c @@ -0,0 +1,118 @@ +/* `struct termios' speed frobnication functions. SunOS 4 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> + +static const speed_t speeds[] = + { + 0, + 50, + 75, + 110, + 134, + 150, + 200, + 300, + 600, + 1200, + 1800, + 2400, + 4800, + 9600, + 19200, + 38400, + }; + + +/* 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; +} + +/* Return the input baud rate stored in *TERMIOS_P. */ +speed_t +cfgetispeed (termios_p) + const struct termios *termios_p; +{ + return (termios_p->c_cflag & CIBAUD) >> IBSHIFT; +} + +/* 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) + { + __set_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; + termios_p->c_cflag |= i; + return 0; + } + + __set_errno (EINVAL); + return -1; +} +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; +{ + register unsigned int i; + + if (termios_p == NULL) + { + __set_errno (EINVAL); + return -1; + } + + /* See comment in cfsetospeed (above). */ + for (i = 0; i < sizeof (speeds) / sizeof (speeds[0]); ++i) + if (i == speed || speeds[i] == speed) + { + termios_p->c_cflag &= ~CIBAUD; + termios_p->c_cflag |= i << IBSHIFT; + return 0; + } + + __set_errno (EINVAL); + return -1; +} +libc_hidden_def (cfsetispeed) |