slattach.c revision 1.1 
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";
45#endif /* not lint */
46
47#include <sys/param.h>
48#include <sgtty.h>
49#include <sys/socket.h>
50#include <netinet/in.h>
51#include <net/if.h>
52#include <netdb.h>
53#include <fcntl.h>
54#include <stdio.h>
55#include <paths.h>
56
57#define DEFAULT_BAUD	9600
58int	slipdisc = SLIPDISC;
59
60char	devname[32];
61char	hostname[MAXHOSTNAMELEN];
62
63main(argc, argv)
64	int argc;
65	char *argv[];
66{
67	register int fd;
68	register char *dev = argv[1];
69	struct sgttyb sgtty;
70	int	speed;
71
72	if (argc < 2 || argc > 3) {
73		fprintf(stderr, "usage: %s ttyname [baudrate]\n", argv[0]);
74		exit(1);
75	}
76	speed = argc == 3 ? findspeed(atoi(argv[2])) : findspeed(DEFAULT_BAUD);
77	if (speed == 0) {
78		fprintf(stderr, "unknown speed %s", argv[2]);
79		exit(1);
80	}
81	if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) {
82		(void)sprintf(devname, "%s/%s", _PATH_DEV, dev);
83		dev = devname;
84	}
85	if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) {
86		perror(dev);
87		exit(1);
88	}
89	sgtty.sg_flags = RAW | ANYP;
90	sgtty.sg_ispeed = sgtty.sg_ospeed = speed;
91	if (ioctl(fd, TIOCSETP, &sgtty) < 0) {
92		perror("ioctl(TIOCSETP)");
93		exit(1);
94	}
95	if (ioctl(fd, TIOCSETD, &slipdisc) < 0) {
96		perror("ioctl(TIOCSETD)");
97		exit(1);
98	}
99
100	if (fork() > 0)
101		exit(0);
102	for (;;)
103		sigpause(0L);
104}
105
106struct sg_spds {
107	int sp_val, sp_name;
108}       spds[] = {
109#ifdef B50
110	{ 50, B50 },
111#endif
112#ifdef B75
113	{ 75, B75 },
114#endif
115#ifdef B110
116	{ 110, B110 },
117#endif
118#ifdef B150
119	{ 150, B150 },
120#endif
121#ifdef B200
122	{ 200, B200 },
123#endif
124#ifdef B300
125	{ 300, B300 },
126#endif
127#ifdef B600
128	{ 600, B600 },
129#endif
130#ifdef B1200
131	{ 1200, B1200 },
132#endif
133#ifdef B1800
134	{ 1800, B1800 },
135#endif
136#ifdef B2000
137	{ 2000, B2000 },
138#endif
139#ifdef B2400
140	{ 2400, B2400 },
141#endif
142#ifdef B3600
143	{ 3600, B3600 },
144#endif
145#ifdef B4800
146	{ 4800, B4800 },
147#endif
148#ifdef B7200
149	{ 7200, B7200 },
150#endif
151#ifdef B9600
152	{ 9600, B9600 },
153#endif
154#ifdef EXTA
155	{ 19200, EXTA },
156#endif
157#ifdef EXTB
158	{ 38400, EXTB },
159#endif
160	{ 0, 0 }
161};
162
163findspeed(speed)
164	register int speed;
165{
166	register struct sg_spds *sp;
167
168	sp = spds;
169	while (sp->sp_val && sp->sp_val != speed)
170		sp++;
171	return (sp->sp_name);
172}
173