slattach.tproj/slattach.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1988, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * This code is derived from software contributed to Berkeley by
  29  * Rick Adams.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  */
  59
  60
  61 #include <sys/param.h>
  62 #include <sgtty.h>
  63 #include <sys/socket.h>
  64 #include <netinet/in.h>
  65 #include <net/if.h>
  66 #include <netdb.h>
  67 #include <fcntl.h>
  68 #include <stdio.h>
  69 #include <stdlib.h>
  70 #include <string.h>
  71 #include <signal.h>
  72 #include <sys/types.h>
  73 #include <unistd.h>
  74 #include <paths.h>
  75
  76 #define DEFAULT_BAUD    9600
  77 int     slipdisc = SLIPDISC;
  78
  79 __private_extern__
  80 char    dev_name[32] = { '\0' };
  81 char    hostname[MAXHOSTNAMELEN];
  82
  83 int findspeed(int);
  84
  85 int
  86 main(argc, argv)
  87         int argc;
  88         char *argv[];
  89 {
  90         register int fd;
  91         register char *dev = argv[1];
  92         struct sgttyb sgtty;
  93         int     speed;
  94
  95         if (argc < 2 || argc > 3) {
  96                 fprintf(stderr, "usage: %s ttyname [baudrate]\n", argv[0]);
  97                 exit(1);
  98         }
  99         speed = argc == 3 ? findspeed(atoi(argv[2])) : findspeed(DEFAULT_BAUD);
 100         if (speed == 0) {
 101                 fprintf(stderr, "unknown speed %s", argv[2]);
 102                 exit(1);
 103         }
 104         if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) {
 105                 (void)snprintf(dev_name, sizeof(dev_name),
 106                     "%s%s", _PATH_DEV, dev);
 107                 dev = dev_name;
 108         }
 109         if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) {
 110                 perror(dev);
 111                 exit(1);
 112         }
 113         sgtty.sg_flags = RAW | ANYP;
 114         sgtty.sg_ispeed = sgtty.sg_ospeed = speed;
 115         if (ioctl(fd, TIOCSETP, &sgtty) < 0) {
 116                 perror("ioctl(TIOCSETP)");
 117                 exit(1);
 118         }
 119         if (ioctl(fd, TIOCSETD, &slipdisc) < 0) {
 120                 perror("ioctl(TIOCSETD)");
 121                 exit(1);
 122         }
 123
 124         if (fork() > 0)
 125                 exit(0);
 126         for (;;)
 127                 sigpause(0L);
 128         /* NOTREACHED */
 129         return 0;
 130 }
 131
 132 struct sg_spds {
 133         int sp_val, sp_name;
 134 }       spds[] = {
 135 #ifdef B50
 136         { 50, B50 },
 137 #endif
 138 #ifdef B75
 139         { 75, B75 },
 140 #endif
 141 #ifdef B110
 142         { 110, B110 },
 143 #endif
 144 #ifdef B150
 145         { 150, B150 },
 146 #endif
 147 #ifdef B200
 148         { 200, B200 },
 149 #endif
 150 #ifdef B300
 151         { 300, B300 },
 152 #endif
 153 #ifdef B600
 154         { 600, B600 },
 155 #endif
 156 #ifdef B1200
 157         { 1200, B1200 },
 158 #endif
 159 #ifdef B1800
 160         { 1800, B1800 },
 161 #endif
 162 #ifdef B2000
 163         { 2000, B2000 },
 164 #endif
 165 #ifdef B2400
 166         { 2400, B2400 },
 167 #endif
 168 #ifdef B3600
 169         { 3600, B3600 },
 170 #endif
 171 #ifdef B4800
 172         { 4800, B4800 },
 173 #endif
 174 #ifdef B7200
 175         { 7200, B7200 },
 176 #endif
 177 #ifdef B9600
 178         { 9600, B9600 },
 179 #endif
 180 #ifdef EXTA
 181         { 19200, EXTA },
 182 #endif
 183 #ifdef EXTB
 184         { 38400, EXTB },
 185 #endif
 186         { 0, 0 }
 187 };
 188
 189 int
 190 findspeed(speed)
 191         register int speed;
 192 {
 193         register struct sg_spds *sp;
 194
 195         sp = spds;
 196         while (sp->sp_val && sp->sp_val != speed)
 197                 sp++;
 198         return (sp->sp_name);
 199 }