1 /* $NetBSD: dn11.c,v 1.10 2006/12/14 17:09:43 christos 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 1.10 2006/12/14 17:09:43 christos 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 (void)printf("\nstarting call..."); 59 if ((dn = open(acu, O_WRONLY)) < 0) { 60 if (errno == EBUSY) 61 (void)printf("line busy..."); 62 else 63 (void)printf("acu open error..."); 64 return (0); 65 } 66 if (setjmp(jmpbuf)) { 67 (void)kill(child, SIGKILL); 68 (void)close(dn); 69 return (0); 70 } 71 (void)signal(SIGALRM, alarmtr); 72 timelim = 5 * strlen(num); 73 (void)alarm((unsigned)(timelim < 30 ? 30 : timelim)); 74 if ((child = fork()) == 0) { 75 /* 76 * ignore this stuff for aborts 77 */ 78 (void)signal(SIGALRM, SIG_IGN); 79 (void)signal(SIGINT, SIG_IGN); 80 (void)signal(SIGQUIT, SIG_IGN); 81 (void)sleep(2); 82 nw = write(dn, num, (size_t)(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 (void)printf("lost carrier..."); 91 else 92 (void)printf("dialup line open failed..."); 93 (void)alarm(0); 94 (void)kill(child, SIGKILL); 95 (void)close(dn); 96 return (0); 97 } 98 (void)alarm(0); 99 (void)tcgetattr(dn, &cntrl); 100 cntrl.c_cflag |= HUPCL; 101 (void)tcsetattr(dn, TCSANOW, &cntrl); 102 (void)signal(SIGALRM, SIG_DFL); 103 while ((nw = wait(<)) != child && nw != -1) 104 ; 105 (void)fflush(stdout); 106 (void)close(dn); 107 if (lt != 0) { 108 (void)close(FD); 109 return (0); 110 } 111 return (1); 112 } 113 114 static void 115 /*ARGSUSED*/ 116 alarmtr(int dummy __unused) 117 { 118 119 (void)alarm(0); 120 longjmp(jmpbuf, 1); 121 } 122 123 /* 124 * Insurance, for some reason we don't seem to be 125 * hanging up... 126 */ 127 void 128 dn_disconnect(void) 129 { 130 131 (void)sleep(2); 132 if (FD > 0) 133 (void)ioctl(FD, TIOCCDTR, 0); 134 (void)close(FD); 135 } 136 137 void 138 dn_abort(void) 139 { 140 141 (void)sleep(2); 142 if (child > 0) 143 (void)kill(child, SIGKILL); 144 if (dn > 0) 145 (void)close(dn); 146 if (FD > 0) 147 (void)ioctl(FD, TIOCCDTR, 0); 148 (void)close(FD); 149 } 150