1 /* $NetBSD: dn11.c,v 1.5 1997/11/22 07:28:55 lukem 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 __RCSID("$NetBSD: dn11.c,v 1.5 1997/11/22 07:28:55 lukem Exp $"); 42 #endif /* not lint */ 43 44 /* 45 * Routines for dialing up on DN-11 46 */ 47 #include "tip.h" 48 49 static jmp_buf jmpbuf; 50 static int child = -1, dn; 51 52 static void alarmtr __P((int)); 53 54 int 55 dn_dialer(num, acu) 56 char *num, *acu; 57 { 58 int lt, nw; 59 int timelim; 60 struct termios cntrl; 61 62 if (boolean(value(VERBOSE))) 63 printf("\nstarting call..."); 64 if ((dn = open(acu, 1)) < 0) { 65 if (errno == EBUSY) 66 printf("line busy..."); 67 else 68 printf("acu open error..."); 69 return (0); 70 } 71 if (setjmp(jmpbuf)) { 72 kill(child, SIGKILL); 73 close(dn); 74 return (0); 75 } 76 signal(SIGALRM, alarmtr); 77 timelim = 5 * strlen(num); 78 alarm(timelim < 30 ? 30 : timelim); 79 if ((child = fork()) == 0) { 80 /* 81 * ignore this stuff for aborts 82 */ 83 signal(SIGALRM, SIG_IGN); 84 signal(SIGINT, SIG_IGN); 85 signal(SIGQUIT, SIG_IGN); 86 sleep(2); 87 nw = write(dn, num, lt = strlen(num)); 88 exit(nw != lt); 89 } 90 /* 91 * open line - will return on carrier 92 */ 93 if ((FD = open(DV, 2)) < 0) { 94 if (errno == EIO) 95 printf("lost carrier..."); 96 else 97 printf("dialup line open failed..."); 98 alarm(0); 99 kill(child, SIGKILL); 100 close(dn); 101 return (0); 102 } 103 alarm(0); 104 tcgetattr(dn, &cntrl); 105 cntrl.c_cflag |= HUPCL; 106 tcsetattr(dn, TCSANOW, &cntrl); 107 signal(SIGALRM, SIG_DFL); 108 while ((nw = wait(<)) != child && nw != -1) 109 ; 110 fflush(stdout); 111 close(dn); 112 if (lt != 0) { 113 close(FD); 114 return (0); 115 } 116 return (1); 117 } 118 119 static void 120 alarmtr(dummy) 121 int dummy; 122 { 123 alarm(0); 124 longjmp(jmpbuf, 1); 125 } 126 127 /* 128 * Insurance, for some reason we don't seem to be 129 * hanging up... 130 */ 131 void 132 dn_disconnect() 133 { 134 135 sleep(2); 136 if (FD > 0) 137 ioctl(FD, TIOCCDTR, 0); 138 close(FD); 139 } 140 141 void 142 dn_abort() 143 { 144 145 sleep(2); 146 if (child > 0) 147 kill(child, SIGKILL); 148 if (dn > 0) 149 close(dn); 150 if (FD > 0) 151 ioctl(FD, TIOCCDTR, 0); 152 close(FD); 153 } 154