freebsd-dev/sbin/slattach/slattach.c

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/*
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
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* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Adams.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
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"@(#) Copyright (c) 1988 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
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/*static char sccsid[] = "from: @(#)slattach.c 4.6 (Berkeley) 6/1/90";*/
1998-08-02 16:06:35 +00:00
static char rcsid[] = "$Id: slattach.c,v 1.32 1998/06/28 20:33:36 bde Exp $";
#endif /* not lint */
#include <sys/types.h>
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
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#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <err.h>
#include <fcntl.h>
#include <libutil.h>
#include <paths.h>
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
#include <strings.h>
#include <syslog.h>
#include <termios.h>
#include <unistd.h>
#include <net/if.h>
#include <net/slip.h>
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
#define DEFAULT_BAUD 9600
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
void sighup_handler(); /* SIGHUP handler */
void sigint_handler(); /* SIGINT handler */
void sigterm_handler(); /* SIGTERM handler */
void sigurg_handler(); /* SIGURG handler */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
void exit_handler(int ret); /* run exit_cmd iff specified upon exit. */
void setup_line(int cflag); /* configure terminal settings */
void slip_discipline(); /* switch to slip line discipline */
void configure_network(); /* configure slip interface */
void acquire_line(); /* get tty device as controling terminal */
1997-06-19 14:33:42 +00:00
static void usage __P((void));
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
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int fd = -1;
char *dev = (char *)0; /* path name of the tty (e.g. /dev/tty01) */
char *dvname; /* basename of dev */
1995-09-20 04:53:08 +00:00
int locked = 0; /* uucp lock active */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
int flow_control = 0; /* non-zero to enable hardware flow control. */
int modem_control = HUPCL; /* !CLOCAL+HUPCL iff we watch carrier. */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
int comstate; /* TIOCMGET current state of serial driver */
int redial_on_startup = 0; /* iff non-zero execute redial_cmd on startup */
speed_t speed = DEFAULT_BAUD; /* baud rate of tty */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
int slflags = 0; /* compression flags */
int unit = -1; /* slip device unit number */
int foreground = 0; /* act as demon if zero, else don't fork. */
int keepal = 0; /* keepalive timeout */
int outfill = 0; /* outfill timeout */
int sl_unit = -1; /* unit number */
1995-09-20 04:53:08 +00:00
int uucp_lock = 0; /* do uucp locking */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
int exiting = 0; /* allready running exit_handler */
struct termios tty; /* tty configuration/state */
char tty_path[32]; /* path name of the tty (e.g. /dev/tty01) */
char pidfilename[40]; /* e.g. /var/run/slattach.tty01.pid */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
char *redial_cmd = 0; /* command to exec upon shutdown. */
char *config_cmd = 0; /* command to exec if slip unit changes. */
char *exit_cmd = 0; /* command to exec before exiting. */
1997-06-19 14:33:42 +00:00
static void
usage()
{
fprintf(stderr, "%s\n%s\n",
"usage: slattach [-acfhlnz] [-e command] [-r command] [-s speed] [-u command]",
" [-L] [-K timeout] [-O timeout] [-S unit] device");
/* do not exit here */
}
int
main(int argc, char **argv)
{
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
int option;
extern char *optarg;
extern int optind;
while ((option = getopt(argc, argv, "ace:fhlnr:s:u:zLK:O:S:")) != -1) {
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
switch (option) {
case 'a':
slflags |= IFF_LINK2;
slflags &= ~IFF_LINK0;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
break;
case 'c':
slflags |= IFF_LINK0;
slflags &= ~IFF_LINK2;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
break;
case 'e':
exit_cmd = (char*) strdup (optarg);
break;
case 'f':
foreground = 1;
break;
case 'h':
flow_control |= CRTSCTS;
break;
case 'l':
modem_control = CLOCAL; /* clear HUPCL too */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
break;
case 'n':
slflags |= IFF_LINK1;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
break;
case 'r':
redial_cmd = (char*) strdup (optarg);
break;
case 's':
speed = atoi(optarg);
break;
case 'u':
config_cmd = (char*) strdup (optarg);
break;
case 'z':
redial_on_startup = 1;
break;
1995-09-20 04:53:08 +00:00
case 'L':
uucp_lock = 1;
break;
case 'K':
keepal = atoi(optarg);
break;
case 'O':
outfill = atoi(optarg);
break;
case 'S':
sl_unit = atoi(optarg);
break;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
case '?':
1997-06-19 14:33:42 +00:00
default:
usage();
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(1);
}
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (optind == argc - 1)
dev = argv[optind];
1997-06-19 14:33:42 +00:00
if (optind < (argc - 1))
warnx("too many args, first='%s'", argv[optind]);
if (optind > (argc - 1))
warnx("not enough args");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (dev == (char *)0) {
1997-06-19 14:33:42 +00:00
usage();
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(2);
}
if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) {
strcpy(tty_path, _PATH_DEV);
strcat(tty_path, "/");
strncat(tty_path, dev, 10);
dev = tty_path;
}
dvname = strrchr(dev, '/'); /* always succeeds */
dvname++; /* trailing tty pathname component */
sprintf(pidfilename, "%sslattach.%s.pid", _PATH_VARRUN, dvname);
printf("%s\n",pidfilename);
1995-05-30 06:12:45 +00:00
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (!foreground)
daemon(0,0); /* fork, setsid, chdir /, and close std*. */
/* daemon() closed stderr, so log errors from here on. */
openlog("slattach",LOG_CONS|LOG_PID,LOG_DAEMON);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
acquire_line(); /* get tty device as controling terminal */
setup_line(0); /* configure for slip line discipline */
slip_discipline(); /* switch to slip line discipline */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* upon INT log a timestamp and exit. */
if (signal(SIGINT,sigint_handler) == SIG_ERR)
1994-11-01 08:34:32 +00:00
syslog(LOG_NOTICE,"cannot install SIGINT handler: %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* upon TERM log a timestamp and exit. */
if (signal(SIGTERM,sigterm_handler) == SIG_ERR)
1994-11-01 08:34:32 +00:00
syslog(LOG_NOTICE,"cannot install SIGTERM handler: %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* upon HUP redial and reconnect. */
if (signal(SIGHUP,sighup_handler) == SIG_ERR)
1994-11-01 08:34:32 +00:00
syslog(LOG_NOTICE,"cannot install SIGHUP handler: %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (redial_on_startup)
sighup_handler();
else if (!(modem_control & CLOCAL)) {
if (ioctl(fd, TIOCMGET, &comstate) < 0)
syslog(LOG_NOTICE,"cannot get carrier state: %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (!(comstate & TIOCM_CD)) { /* check for carrier */
/* force a redial if no carrier */
kill (getpid(), SIGHUP);
} else
configure_network();
} else
configure_network(); /* configure the network if needed. */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
for (;;) {
sigset_t mask;
sigemptyset(&mask);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
sigsuspend(&mask);
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
}
/* Close all FDs, fork, reopen tty port as 0-2, and make it the
controlling terminal for our process group. */
void acquire_line()
{
int ttydisc = TTYDISC;
int oflags;
FILE *pidfile;
/* reset to tty discipline */
if (fd >= 0 && ioctl(fd, TIOCSETD, &ttydisc) < 0) {
syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
exit_handler(1);
}
(void)close(STDIN_FILENO); /* close FDs before forking. */
(void)close(STDOUT_FILENO);
(void)close(STDERR_FILENO);
if (fd > 2)
(void)close(fd);
signal(SIGHUP, SIG_IGN); /* ignore HUP signal when parent dies. */
if (daemon(0,0)) { /* fork, setsid, chdir /, and close std*. */
syslog(LOG_ERR, "daemon(0,0): %m");
exit_handler(1);
}
while (getppid () != 1)
sleep (1); /* Wait for parent to die. */
/* create PID file */
if((pidfile = fopen(pidfilename, "w"))) {
1998-06-28 20:33:36 +00:00
fprintf(pidfile, "%ld\n", (long)getpid());
fclose(pidfile);
}
1995-05-30 06:12:45 +00:00
if (signal(SIGHUP,sighup_handler) == SIG_ERR) /* Re-enable HUP signal */
1994-11-01 08:34:32 +00:00
syslog(LOG_NOTICE,"cannot install SIGHUP handler: %m");
1995-09-20 04:53:08 +00:00
if (uucp_lock) {
/* unlock not needed here, always re-lock with new pid */
int res;
if ((res = uu_lock(dvname)) != UU_LOCK_OK) {
if (res != UU_LOCK_INUSE)
syslog(LOG_ERR, "uu_lock: %s", uu_lockerr(res));
1995-09-20 04:53:08 +00:00
syslog(LOG_ERR, "can't lock %s", dev);
exit_handler(1);
}
locked = 1;
}
if ((fd = open(dev, O_RDWR | O_NONBLOCK, 0)) < 0) {
syslog(LOG_ERR, "open(%s) %m", dev);
exit_handler(1);
}
/* Turn off O_NONBLOCK for dumb redialers, if any. */
if ((oflags = fcntl(fd, F_GETFL)) == -1) {
syslog(LOG_ERR, "fcntl(F_GETFL) failed: %m");
exit_handler(1);
}
if (fcntl(fd, F_SETFL, oflags & ~O_NONBLOCK) == -1) {
syslog(LOG_ERR, "fcntl(F_SETFL) failed: %m");
exit_handler(1);
}
(void)dup2(fd, STDIN_FILENO);
(void)dup2(fd, STDOUT_FILENO);
(void)dup2(fd, STDERR_FILENO);
if (fd > 2)
(void)close (fd);
fd = STDIN_FILENO;
/* acquire the serial line as a controling terminal. */
if (ioctl(fd, TIOCSCTTY, 0) < 0) {
syslog(LOG_ERR,"ioctl(TIOCSCTTY): %m");
exit_handler(1);
}
/* Make us the foreground process group associated with the
slip line which is our controlling terminal. */
if (tcsetpgrp(fd, getpid()) < 0)
1994-11-01 08:34:32 +00:00
syslog(LOG_NOTICE,"tcsetpgrp failed: %m");
}
/* Set the tty flags and set DTR. */
/* Call as setup_line(CLOCAL) to force clocal assertion. */
void setup_line(int cflag)
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
{
tty.c_lflag = tty.c_iflag = tty.c_oflag = 0;
tty.c_cflag = CREAD | CS8 | flow_control | modem_control | cflag;
cfsetispeed(&tty, speed);
cfsetospeed(&tty, speed);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* set the line speed and flow control */
if (tcsetattr(fd, TCSAFLUSH, &tty) < 0) {
syslog(LOG_ERR, "tcsetattr(TCSAFLUSH): %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(1);
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* set data terminal ready */
if (ioctl(fd, TIOCSDTR) < 0) {
syslog(LOG_ERR, "ioctl(TIOCSDTR): %m");
exit_handler(1);
}
}
/* Put the line in slip discipline. */
void slip_discipline()
{
struct ifreq ifr;
int slipdisc = SLIPDISC;
int s, tmp_unit = -1;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* Switch to slip line discipline. */
if (ioctl(fd, TIOCSETD, &slipdisc) < 0) {
syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(1);
}
if (sl_unit >= 0 && ioctl(fd, SLIOCSUNIT, &sl_unit) < 0) {
syslog(LOG_ERR, "ioctl(SLIOCSUNIT): %m");
exit_handler(1);
}
/* find out what unit number we were assigned */
if (ioctl(fd, SLIOCGUNIT, (caddr_t)&tmp_unit) < 0) {
syslog(LOG_ERR, "ioctl(SLIOCGUNIT): %m");
exit_handler(1);
}
if (tmp_unit < 0) {
syslog(LOG_ERR, "bad unit (%d) from ioctl(SLIOCGUNIT)",tmp_unit);
exit_handler(1);
}
if (keepal > 0) {
signal(SIGURG, sigurg_handler);
if (ioctl(fd, SLIOCSKEEPAL, &keepal) < 0) {
syslog(LOG_ERR, "ioctl(SLIOCSKEEPAL): %m");
exit_handler(1);
}
}
if (outfill > 0 && ioctl(fd, SLIOCSOUTFILL, &outfill) < 0) {
syslog(LOG_ERR, "ioctl(SLIOCSOUTFILL): %m");
exit_handler(1);
}
/* open a socket as the handle to the interface */
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0) {
syslog(LOG_ERR, "socket: %m");
exit_handler(1);
}
sprintf(ifr.ifr_name, "sl%d", tmp_unit);
/* get the flags for the interface */
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
exit_handler(1);
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* Assert any compression or no-icmp flags. */
#define SLMASK (~(IFF_LINK0 | IFF_LINK1 | IFF_LINK2))
ifr.ifr_flags &= SLMASK;
ifr.ifr_flags |= slflags;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCSIFFLAGS): %m");
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(1);
}
close(s);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
}
/* configure the interface, eg. by passing the unit number to a script. */
void configure_network()
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
{
int new_unit;
/* find out what unit number we were assigned */
if (ioctl(fd, SLIOCGUNIT, (caddr_t)&new_unit) < 0) {
syslog(LOG_ERR, "ioctl(SLIOCGUNIT): %m");
exit_handler(1);
}
/* iff the unit number changes either invoke config_cmd or punt. */
if (config_cmd) {
char *s;
s = (char*) malloc(strlen(config_cmd) + 32);
sprintf (s, "%s %d %d", config_cmd, unit, new_unit);
syslog(LOG_NOTICE, "Configuring %s (sl%d):", dev, unit);
syslog(LOG_NOTICE, " '%s'", s);
system(s);
free (s);
unit = new_unit;
} else {
/* don't compare unit numbers if this is the first time to attach. */
if (unit < 0)
unit = new_unit;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (new_unit != unit) {
1998-08-02 16:06:35 +00:00
syslog(LOG_ERR,
"slip unit changed from sl%d to sl%d, but no -u CMD was specified!",
unit, new_unit);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(1);
}
syslog(LOG_NOTICE,"sl%d connected to %s at %d baud",unit,dev,speed);
}
}
/* sighup_handler() is invoked when carrier drops, eg. before redial. */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
void sighup_handler()
{
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if(exiting) return;
1996-03-12 12:56:27 +00:00
if (redial_cmd == NULL) {
syslog(LOG_NOTICE,"SIGHUP on %s (sl%d); exiting", dev, unit);
exit_handler(1);
}
again:
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* invoke a shell for redial_cmd or punt. */
if (*redial_cmd) {
syslog(LOG_NOTICE,"SIGHUP on %s (sl%d); running '%s'",
dev, unit, redial_cmd);
acquire_line(); /* reopen dead line */
setup_line(CLOCAL);
1995-09-20 04:53:08 +00:00
if (locked) {
if (uucp_lock)
uu_unlock(dvname); /* for redial */
locked = 0;
}
if (system(redial_cmd))
goto again;
1995-09-20 04:53:08 +00:00
if (uucp_lock) {
int res;
if ((res = uu_lock(dvname)) != UU_LOCK_OK) {
if (res != UU_LOCK_INUSE)
syslog(LOG_ERR, "uu_lock: %s", uu_lockerr(res));
1995-09-20 04:53:08 +00:00
syslog(LOG_ERR, "can't relock %s after %s, aborting",
dev, redial_cmd);
exit_handler(1);
}
locked = 1;
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* Now check again for carrier (dial command is done): */
if (!(modem_control & CLOCAL)) {
tty.c_cflag &= ~CLOCAL;
if (tcsetattr(fd, TCSAFLUSH, &tty) < 0) {
syslog(LOG_ERR, "tcsetattr(TCSAFLUSH): %m");
exit_handler(1);
}
ioctl(fd, TIOCMGET, &comstate);
if (!(comstate & TIOCM_CD)) { /* check for carrier */
/* force a redial if no carrier */
goto again;
}
} else
setup_line(0);
} else { /* Empty redial command */
syslog(LOG_NOTICE,"SIGHUP on %s (sl%d); reestablish connection",
dev, unit);
acquire_line(); /* reopen dead line */
setup_line(0); /* restore ospeed from hangup (B0) */
/* If modem control, just wait for carrier before attaching.
If no modem control, just fall through immediately. */
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
if (!(modem_control & CLOCAL)) {
int carrier = 0;
syslog(LOG_NOTICE, "Waiting for carrier on %s (sl%d)",
dev, unit);
/* Now wait for carrier before attaching line. */
/* We must poll since CLOCAL prevents signal. */
while (! carrier) {
sleep(2);
ioctl(fd, TIOCMGET, &comstate);
if (comstate & TIOCM_CD)
carrier = 1;
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
}
syslog(LOG_NOTICE, "Carrier now present on %s (sl%d)",
dev, unit);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
}
}
slip_discipline();
configure_network();
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
}
/* Signal handler for SIGINT. We just log and exit. */
void sigint_handler()
{
if(exiting) return;
syslog(LOG_NOTICE,"SIGINT on %s (sl%d); exiting",dev,unit);
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
exit_handler(0);
}
/* Signal handler for SIGURG. */
void sigurg_handler()
{
int ttydisc = TTYDISC;
signal(SIGURG, SIG_IGN);
if(exiting) return;
syslog(LOG_NOTICE,"SIGURG on %s (sl%d); hangup",dev,unit);
if (ioctl(fd, TIOCSETD, &ttydisc) < 0) {
syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
exit_handler(1);
}
cfsetospeed(&tty, B0);
if (tcsetattr(fd, TCSANOW, &tty) < 0) {
syslog(LOG_ERR, "tcsetattr(TCSANOW): %m");
exit_handler(1);
}
/* Need to go to sighup handler in any case */
if (modem_control & CLOCAL)
kill (getpid(), SIGHUP);
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* Signal handler for SIGTERM. We just log and exit. */
void sigterm_handler()
{
if(exiting) return;
syslog(LOG_NOTICE,"SIGTERM on %s (sl%d); exiting",dev,unit);
exit_handler(0);
}
/* Run config_cmd if specified before exiting. */
void exit_handler(int ret)
{
if(exiting) return;
exiting = 1;
/*
* First close the slip line in case exit_cmd wants it (like to hang
* up a modem or something).
*/
if (fd != -1)
close(fd);
1995-09-20 04:53:08 +00:00
if (uucp_lock && locked)
uu_unlock(dvname);
/* Remove the PID file */
(void)unlink(pidfilename);
if (config_cmd) {
char *s;
s = (char*) malloc(strlen(config_cmd) + 32);
sprintf (s, "%s %d -1", config_cmd, unit);
syslog(LOG_NOTICE, "Deconfiguring %s (sl%d):", dev, unit);
syslog(LOG_NOTICE, " '%s'", s);
system(s);
free (s);
}
Slattach ported from 1.1.5 plus Bruce Evans suggested fix (close FDs and fork before redialing) to prevent dialer from hanging with newer sio.c. Also moved history from the source to the cvs log (here) per David G's suggestion. This compiles but needs testing now... Rich /* * Hacks to support "-a|c|n" flags on the command line which enable VJ * header compresion and disable ICMP. * If this is good all rights go to B & L Jolitz, otherwise send your * comments to Reagan (/dev/null). * * nerd@percival.rain.com (Michael Galassi) 92.09.03 * * Hacked to change from sgtty to POSIX termio style serial line control * and added flag to enable cts/rts style flow control. * * blymn@awadi.com.au (Brett Lymn) 93.04.04 * * Put slattach in it's own process group so it can't be killed * accidentally. Close the connection on SIGHUP and SIGINT. Write a * syslog entry upon opening and closing the connection. Rich Murphey * and Brad Huntting. * * Add '-r command' option: runs 'command' upon recieving SIGHUP * resulting from loss of carrier. Log any errors after forking. * Rich 8/13/93 * * This version of slattach includes many changes by David Greenman, Brian * Smith, Chris Bradley, and me (Michael Galassi). None of them are * represented as functional anywhere outside of RAINet though they do work * for us. Documentation is limited to the usage message for now. If you * make improovments please pass them back. * * Added '-u UCMD' which runs 'UCMD <old> <new>' whenever the slip * unit number changes where <old> and <new> are the old and new unit * numbers, respectively. Also added the '-z' option which forces * invocation of the redial command (-r CMD) upon startup regardless * of whether the com driver claims (sometimes mistakenly) that * carrier is present. Also added '-e ECMD' which runs ECMD before * exiting. * * marc@escargot.rain.com (Marc Frajola) 93/09/10 * * Minor fixes to allow passive SLIP links to work (connections with * modem control that do not have an associated dial command). Added * code to re-check for carrier after dial command has been executed. * Added SIGTERM handler to properly handle normal kill signals. Fixed * bug in logic that caused message about no -u command to be logged * even when -u was specified and the sl number changes. Tried to get * rid of redundant syslog()'s to minimize console log output. Improved * logging of improper command line options or number of command * arguments. Removed spurious newline characters from syslog() calls. * * gjung@gjbsd.franken.de * * sighup_handler changed to set CLOCAL before running redial_cmd. * added flag exiting, so exit_handler is not run twice. Fork * before reopening tty. */
1994-08-23 08:07:17 +00:00
/* invoke a shell for exit_cmd. */
if (exit_cmd) {
syslog(LOG_NOTICE,"exiting after running %s", exit_cmd);
system(exit_cmd);
}
exit(ret);
}
/* local variables: */
/* c-indent-level: 8 */
/* c-argdecl-indent: 0 */
/* c-label-offset: -8 */
/* c-continued-statement-offset: 8 */
/* c-brace-offset: 0 */
/* comment-column: 32 */
/* end: */