slattach.c revision 1.2 
1/*
2 * Copyright (c) 1988 Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Adams.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38char copyright[] =
39"@(#) Copyright (c) 1988 Regents of the University of California.\n\
40 All rights reserved.\n";
41#endif /* not lint */
42
43#ifndef lint
44static char sccsid[] = "@(#)slattach.c	4.6 (Berkeley) 6/1/90";
45static char rcsid[] = "$Id: slattach.c,v 1.2 1993/03/22 08:04:00 cgd Exp $";
46#endif /* not lint */
47
48#include <sys/param.h>
49#include <sgtty.h>
50#include <sys/socket.h>
51#include <netinet/in.h>
52#include <net/if.h>
53#include <netdb.h>
54#include <fcntl.h>
55#include <stdio.h>
56#include <paths.h>
57
58#define DEFAULT_BAUD	9600
59int	slipdisc = SLIPDISC;
60
61char	devname[32];
62char	hostname[MAXHOSTNAMELEN];
63
64main(argc, argv)
65	int argc;
66	char *argv[];
67{
68	register int fd;
69	register char *dev = argv[1];
70	struct sgttyb sgtty;
71	int	speed;
72
73	if (argc < 2 || argc > 3) {
74		fprintf(stderr, "usage: %s ttyname [baudrate]\n", argv[0]);
75		exit(1);
76	}
77	speed = argc == 3 ? findspeed(atoi(argv[2])) : findspeed(DEFAULT_BAUD);
78	if (speed == 0) {
79		fprintf(stderr, "unknown speed %s", argv[2]);
80		exit(1);
81	}
82	if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) {
83		(void)sprintf(devname, "%s/%s", _PATH_DEV, dev);
84		dev = devname;
85	}
86	if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) {
87		perror(dev);
88		exit(1);
89	}
90	sgtty.sg_flags = RAW | ANYP;
91	sgtty.sg_ispeed = sgtty.sg_ospeed = speed;
92	if (ioctl(fd, TIOCSETP, &sgtty) < 0) {
93		perror("ioctl(TIOCSETP)");
94		exit(1);
95	}
96	if (ioctl(fd, TIOCSETD, &slipdisc) < 0) {
97		perror("ioctl(TIOCSETD)");
98		exit(1);
99	}
100
101	if (fork() > 0)
102		exit(0);
103	for (;;)
104		sigpause(0L);
105}
106
107struct sg_spds {
108	int sp_val, sp_name;
109}       spds[] = {
110#ifdef B50
111	{ 50, B50 },
112#endif
113#ifdef B75
114	{ 75, B75 },
115#endif
116#ifdef B110
117	{ 110, B110 },
118#endif
119#ifdef B150
120	{ 150, B150 },
121#endif
122#ifdef B200
123	{ 200, B200 },
124#endif
125#ifdef B300
126	{ 300, B300 },
127#endif
128#ifdef B600
129	{ 600, B600 },
130#endif
131#ifdef B1200
132	{ 1200, B1200 },
133#endif
134#ifdef B1800
135	{ 1800, B1800 },
136#endif
137#ifdef B2000
138	{ 2000, B2000 },
139#endif
140#ifdef B2400
141	{ 2400, B2400 },
142#endif
143#ifdef B3600
144	{ 3600, B3600 },
145#endif
146#ifdef B4800
147	{ 4800, B4800 },
148#endif
149#ifdef B7200
150	{ 7200, B7200 },
151#endif
152#ifdef B9600
153	{ 9600, B9600 },
154#endif
155#ifdef EXTA
156	{ 19200, EXTA },
157#endif
158#ifdef EXTB
159	{ 38400, EXTB },
160#endif
161	{ 0, 0 }
162};
163
164findspeed(speed)
165	register int speed;
166{
167	register struct sg_spds *sp;
168
169	sp = spds;
170	while (sp->sp_val && sp->sp_val != speed)
171		sp++;
172	return (sp->sp_name);
173}
174