1 /* $NetBSD: slattach.c,v 1.25 2001/12/20 20:10:38 soren Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Adams. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)slattach.c 8.2 (Berkeley) 1/7/94"; 48 #else 49 __RCSID("$NetBSD: slattach.c,v 1.25 2001/12/20 20:10:38 soren Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 #include <sys/param.h> 54 #include <sys/socket.h> 55 #include <sys/types.h> 56 #include <sys/ioctl.h> 57 58 #include <net/if.h> 59 #include <netinet/in.h> 60 61 #include <err.h> 62 #include <fcntl.h> 63 #include <netdb.h> 64 #include <paths.h> 65 #include <signal.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <termios.h> 70 #include <unistd.h> 71 72 int speed = 9600; 73 int slipdisc = SLIPDISC; 74 75 char devicename[32]; 76 77 int main __P((int, char *[])); 78 int ttydisc __P((char *)); 79 void usage __P((void)); 80 81 int 82 main(argc, argv) 83 int argc; 84 char *argv[]; 85 { 86 int fd; 87 char *dev = argv[1]; 88 struct termios tty; 89 tcflag_t cflag = HUPCL; 90 int ch; 91 sigset_t sigset; 92 int opt_detach = 1; 93 94 while ((ch = getopt(argc, argv, "hHlmns:t:")) != -1) { 95 switch (ch) { 96 case 'h': 97 cflag |= CRTSCTS; 98 break; 99 case 'H': 100 cflag |= CDTRCTS; 101 break; 102 case 'l': 103 cflag |= CLOCAL; 104 break; 105 case 'm': 106 cflag &= ~HUPCL; 107 break; 108 case 'n': 109 opt_detach = 0; 110 break; 111 case 's': 112 speed = atoi(optarg); 113 break; 114 case 'r': case 't': 115 slipdisc = ttydisc(optarg); 116 break; 117 case '?': 118 default: 119 usage(); 120 } 121 } 122 argc -= optind; 123 argv += optind; 124 125 if (argc != 1) 126 usage(); 127 128 dev = *argv; 129 if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) { 130 (void)snprintf(devicename, sizeof(devicename), 131 "%s%s", _PATH_DEV, dev); 132 dev = devicename; 133 } 134 if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) 135 err(1, "%s", dev); 136 tty.c_cflag = CREAD | CS8 | cflag; 137 tty.c_iflag = 0; 138 tty.c_lflag = 0; 139 tty.c_oflag = 0; 140 tty.c_cc[VMIN] = 1; 141 tty.c_cc[VTIME] = 0; 142 cfsetspeed(&tty, speed); 143 if (tcsetattr(fd, TCSADRAIN, &tty) < 0) 144 err(1, "tcsetattr"); 145 if (ioctl(fd, TIOCSDTR, 0) < 0) 146 err(1, "TIOCSDTR"); 147 if (ioctl(fd, TIOCSETD, &slipdisc) < 0) 148 err(1, "TIOCSETD"); 149 if (opt_detach && daemon(0, 0) != 0) 150 err(1, "couldn't detach"); 151 sigemptyset(&sigset); 152 for (;;) 153 sigsuspend(&sigset); 154 } 155 156 int 157 ttydisc(name) 158 char *name; 159 { 160 if (strcmp(name, "slip") == 0) 161 return(SLIPDISC); 162 #ifdef STRIPDISC 163 else if (strcmp(name, "strip") == 0) 164 return(STRIPDISC); 165 #endif 166 else 167 usage(); 168 /* NOTREACHED */ 169 return -1; 170 } 171 172 void 173 usage() 174 { 175 176 (void)fprintf(stderr, 177 "Usage: %s [-t ldisc] [-hHlmn] [-s baudrate] ttyname\n", 178 getprogname()); 179 exit(1); 180 } 181