1 /* $NetBSD: dn11.c,v 1.9 2006/04/03 00:51:14 perry 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 1.9 2006/04/03 00:51:14 perry 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(int); 49 50 int 51 dn_dialer(char *num, char *acu) 52 { 53 int lt, nw; 54 int timelim; 55 struct termios cntrl; 56 57 if (boolean(value(VERBOSE))) 58 printf("\nstarting call..."); 59 if ((dn = open(acu, O_WRONLY)) < 0) { 60 if (errno == EBUSY) 61 printf("line busy..."); 62 else 63 printf("acu open error..."); 64 return (0); 65 } 66 if (setjmp(jmpbuf)) { 67 kill(child, SIGKILL); 68 close(dn); 69 return (0); 70 } 71 signal(SIGALRM, alarmtr); 72 timelim = 5 * strlen(num); 73 alarm(timelim < 30 ? 30 : timelim); 74 if ((child = fork()) == 0) { 75 /* 76 * ignore this stuff for aborts 77 */ 78 signal(SIGALRM, SIG_IGN); 79 signal(SIGINT, SIG_IGN); 80 signal(SIGQUIT, SIG_IGN); 81 sleep(2); 82 nw = write(dn, num, lt = strlen(num)); 83 exit(nw != lt); 84 } 85 /* 86 * open line - will return on carrier 87 */ 88 if ((FD = open(DV, O_RDWR)) < 0) { 89 if (errno == EIO) 90 printf("lost carrier..."); 91 else 92 printf("dialup line open failed..."); 93 alarm(0); 94 kill(child, SIGKILL); 95 close(dn); 96 return (0); 97 } 98 alarm(0); 99 tcgetattr(dn, &cntrl); 100 cntrl.c_cflag |= HUPCL; 101 tcsetattr(dn, TCSANOW, &cntrl); 102 signal(SIGALRM, SIG_DFL); 103 while ((nw = wait(<)) != child && nw != -1) 104 ; 105 fflush(stdout); 106 close(dn); 107 if (lt != 0) { 108 close(FD); 109 return (0); 110 } 111 return (1); 112 } 113 114 static void 115 alarmtr(int dummy) 116 { 117 118 alarm(0); 119 longjmp(jmpbuf, 1); 120 } 121 122 /* 123 * Insurance, for some reason we don't seem to be 124 * hanging up... 125 */ 126 void 127 dn_disconnect(void) 128 { 129 130 sleep(2); 131 if (FD > 0) 132 ioctl(FD, TIOCCDTR, 0); 133 close(FD); 134 } 135 136 void 137 dn_abort(void) 138 { 139 140 sleep(2); 141 if (child > 0) 142 kill(child, SIGKILL); 143 if (dn > 0) 144 close(dn); 145 if (FD > 0) 146 ioctl(FD, TIOCCDTR, 0); 147 close(FD); 148 } 149