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