dn11.c revision 1.8 1 /* $NetBSD: dn11.c,v 1.8 2004/03/11 03:33:19 uebayasi Exp $ */
2
3 /*
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93";
36 #endif
37 __RCSID("$NetBSD: dn11.c,v 1.8 2004/03/11 03:33:19 uebayasi Exp $");
38 #endif /* not lint */
39
40 /*
41 * Routines for dialing up on DN-11
42 */
43 #include "tip.h"
44
45 static jmp_buf jmpbuf;
46 static int child = -1, dn;
47
48 static void alarmtr __P((int));
49
50 int
51 dn_dialer(num, acu)
52 char *num, *acu;
53 {
54 int lt, nw;
55 int timelim;
56 struct termios cntrl;
57
58 if (boolean(value(VERBOSE)))
59 printf("\nstarting call...");
60 if ((dn = open(acu, O_WRONLY)) < 0) {
61 if (errno == EBUSY)
62 printf("line busy...");
63 else
64 printf("acu open error...");
65 return (0);
66 }
67 if (setjmp(jmpbuf)) {
68 kill(child, SIGKILL);
69 close(dn);
70 return (0);
71 }
72 signal(SIGALRM, alarmtr);
73 timelim = 5 * strlen(num);
74 alarm(timelim < 30 ? 30 : timelim);
75 if ((child = fork()) == 0) {
76 /*
77 * ignore this stuff for aborts
78 */
79 signal(SIGALRM, SIG_IGN);
80 signal(SIGINT, SIG_IGN);
81 signal(SIGQUIT, SIG_IGN);
82 sleep(2);
83 nw = write(dn, num, lt = strlen(num));
84 exit(nw != lt);
85 }
86 /*
87 * open line - will return on carrier
88 */
89 if ((FD = open(DV, O_RDWR)) < 0) {
90 if (errno == EIO)
91 printf("lost carrier...");
92 else
93 printf("dialup line open failed...");
94 alarm(0);
95 kill(child, SIGKILL);
96 close(dn);
97 return (0);
98 }
99 alarm(0);
100 tcgetattr(dn, &cntrl);
101 cntrl.c_cflag |= HUPCL;
102 tcsetattr(dn, TCSANOW, &cntrl);
103 signal(SIGALRM, SIG_DFL);
104 while ((nw = wait(<)) != child && nw != -1)
105 ;
106 fflush(stdout);
107 close(dn);
108 if (lt != 0) {
109 close(FD);
110 return (0);
111 }
112 return (1);
113 }
114
115 static void
116 alarmtr(dummy)
117 int dummy;
118 {
119
120 alarm(0);
121 longjmp(jmpbuf, 1);
122 }
123
124 /*
125 * Insurance, for some reason we don't seem to be
126 * hanging up...
127 */
128 void
129 dn_disconnect()
130 {
131
132 sleep(2);
133 if (FD > 0)
134 ioctl(FD, TIOCCDTR, 0);
135 close(FD);
136 }
137
138 void
139 dn_abort()
140 {
141
142 sleep(2);
143 if (child > 0)
144 kill(child, SIGKILL);
145 if (dn > 0)
146 close(dn);
147 if (FD > 0)
148 ioctl(FD, TIOCCDTR, 0);
149 close(FD);
150 }
151