usr.bin/tip/acucommon.c

   1 /*
   2  * Copyright (c) 1986, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)acucommon.c      8.1 (Berkeley) 6/6/93
  30  * $FreeBSD: src/usr.bin/tip/libacu/acucommon.c,v 1.3 1999/08/28 01:06:30 peter Exp $
  31  */
  32
  33 /*
  34  * Routines for calling up on a Courier modem.
  35  * Derived from Hayes driver.
  36  */
  37 #include "acucommon.h"
  38 #include "tip.h"
  39
  40 #include <err.h>
  41 #include <unistd.h>
  42
  43 #include <sys/types.h>
  44 #include <sys/times.h>
  45
  46 void
  47 acu_nap(unsigned int how_long)
  48 {
  49         struct timeval t;
  50         t.tv_usec = (how_long % 1000) * 1000;
  51         t.tv_sec = how_long / 1000;
  52         (void) select (0, NULL, NULL, NULL, &t);
  53 }
  54
  55 void
  56 acu_hw_flow_control(int hw_flow_control)
  57 {
  58         struct termios t;
  59         if (tcgetattr (FD, &t) == 0) {
  60                 if (hw_flow_control)
  61                         t.c_cflag |= CRTSCTS;
  62                 else
  63                         t.c_cflag &= ~CRTSCTS;
  64                 tcsetattr (FD, TCSANOW, &t);
  65         }
  66 }
  67
  68 int
  69 acu_flush(void)
  70 {
  71         int flags = 0;
  72         return (ioctl (FD, TIOCFLUSH, &flags) == 0);    /* flush any clutter */
  73 }
  74
  75 int
  76 acu_getspeed(void)
  77 {
  78         struct termios term;
  79         tcgetattr (FD, &term);
  80         return (term.c_ospeed);
  81 }
  82
  83 int
  84 acu_setspeed(int speed)
  85 {
  86         int rc = 0;
  87         struct termios term;
  88         if (tcgetattr (FD, &term) == 0) {
  89                 cfsetspeed (&term, speed);
  90                 if (tcsetattr (FD, TCSANOW, &term) == 0)
  91                         ++rc;
  92         }
  93         return (rc);
  94 }
  95
  96 void
  97 acu_hupcl(void)
  98 {
  99         struct termios term;
 100         tcgetattr (FD, &term);
 101         term.c_cflag |= HUPCL;
 102         tcsetattr (FD, TCSANOW, &term);
 103 }
 104
 105 /* end of acucommon.c */