174 lines
4.3 KiB
C
174 lines
4.3 KiB
C
/* $NetBSD: slattach.c,v 1.32 2011/12/30 03:19:36 christos Exp $ */
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Adams.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)slattach.c 8.2 (Berkeley) 1/7/94";
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#else
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__RCSID("$NetBSD: slattach.c,v 1.32 2011/12/30 03:19:36 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <paths.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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static int speed = 9600;
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static int slipdisc = SLIPDISC;
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static char devicename[32];
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static int ttydisc(char *);
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__dead static void usage(void);
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int
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main(int argc, char *argv[])
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{
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int fd;
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char *dev = argv[1];
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struct termios tty;
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tcflag_t cflag = HUPCL;
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int ch;
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sigset_t nsigset;
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int opt_detach = 1;
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while ((ch = getopt(argc, argv, "hHlmns:t:")) != -1) {
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switch (ch) {
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case 'h':
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cflag |= CRTSCTS;
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break;
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case 'H':
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cflag |= CDTRCTS;
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break;
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case 'l':
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cflag |= CLOCAL;
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break;
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case 'm':
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cflag &= ~HUPCL;
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break;
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case 'n':
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opt_detach = 0;
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break;
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case 's':
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speed = atoi(optarg);
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break;
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case 'r': case 't':
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slipdisc = ttydisc(optarg);
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 1)
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usage();
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dev = *argv;
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if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) {
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(void)snprintf(devicename, sizeof(devicename),
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"%s%s", _PATH_DEV, dev);
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dev = devicename;
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}
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if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0)
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err(1, "%s", dev);
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tty.c_cflag = CREAD | CS8 | cflag;
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tty.c_iflag = 0;
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tty.c_lflag = 0;
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tty.c_oflag = 0;
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tty.c_cc[VMIN] = 1;
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tty.c_cc[VTIME] = 0;
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cfsetspeed(&tty, speed);
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if (tcsetattr(fd, TCSADRAIN, &tty) < 0)
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err(1, "tcsetattr");
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if (ioctl(fd, TIOCSDTR, 0) < 0 && errno != ENOTTY)
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err(1, "TIOCSDTR");
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if (ioctl(fd, TIOCSETD, &slipdisc) < 0)
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err(1, "TIOCSETD");
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if (opt_detach && daemon(0, 0) != 0)
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err(1, "couldn't detach");
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sigemptyset(&nsigset);
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for (;;)
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sigsuspend(&nsigset);
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}
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static int
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ttydisc(char *name)
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{
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if (strcmp(name, "slip") == 0)
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return(SLIPDISC);
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#ifdef STRIPDISC
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else if (strcmp(name, "strip") == 0)
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return(STRIPDISC);
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#endif
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else
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usage();
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/* NOTREACHED */
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return -1;
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: %s [-t ldisc] [-hHlmn] [-s baudrate] ttyname\n",
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getprogname());
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exit(1);
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}
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