freebsd_amp_hwpstate/sbin/slattach/slattach.8

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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. */
1994-08-23 08:07:17 +00:00
.\" Copyright (c) 1986, 1991 The Regents of the University of California.
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.\" @(#)slattach.8 6.4 (Berkeley) 3/16/91
.\"
.\" $Header: /home/ncvs/src/sbin/slattach/slattach.8,v 1.4 1995/03/12 15:04:16 joerg Exp $
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
.\"
.Dd April 4, 1993
.Dt SLATTACH 8
.Os BSD 4.3
.Sh NAME
.Nm slattach
.Nd attach serial lines as network interfaces
.Sh SYNOPSIS
.Nm Slattach
.Op Fl a
.Op Fl c
.Op Fl e Ar exit-command
.Op Fl f
.Op Fl h
.Op Fl l
.Op Fl n
.Op Fl r Ar redial-command
.Op Fl s Ar baudrate
.Op Fl u Ar unit-command
.Op Fl z
.Op Fl K Ar keepalive
.Op Fl O Ar outfill
.Op Fl U Ar 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
.Ar ttyname
.Sh DESCRIPTION
.Nm Slattach
is used to assign a tty line to a network interface,
and to define the network source and destination addresses.
The following operands are supported by
.Nm slattach :
.Bl -tag -width Ar
.It Fl a
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
Autoenable the VJ header compression option, if the other end of the link
is capable of VJ header compression then it will be used otherwise normal
headers will be used.
.It Fl c
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
Enables the VJ header compression option. Note that both ends of the link
must be able to use VJ header compression for this to work.
.It Fl e Ar exit-command
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
Specifies a command to be invoked within a shell (sh -c exit-command)
before slattach exits.
.It Fl f
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
Disables the invocation of daemon() to run slattach in the background.
.It Fl 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
Turn on cts/rts style flow control on the slip port, by default no flow
control is done.
.It Fl l
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
disable modem control (CLOCAL) and ignore carrier detect on the slip
port. By default the redial-command is invoked upon carrier drop and
slattach aborts if no redial-command is specified.
.It Fl n
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
Throw away ICMP packets. The slip interface will ignore ICMP packets
to prevent slow lines being saturated by ICMP responses.
.It Fl r Ar redial-command
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
Specifies a command to be invoked within a shell (sh -c
redial-command) whenever carrier is lost on the line.
.It Fl s Ar baudrate
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
Specifies the speed of the connection. If not specified, the
default of 9600 is used.
.It Fl u Ar unit-command
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
When the line is switched to slip discipline, run
.Ql sh \-c unit-command <last> <current>
where <last> and <current> are the slip unit numbers when the line was
last opened and the unit number of the current slip connection
respecitvely. The unit number can change after redialing if you are
using more than one slip line. Slattach will abort if the unit number
changes and
.Ql \-u unit-command
was not specified.
.It Fl z
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
forces redial
redial-cmd upon startup irrespective of carrier.
.It Fl K Ar keepalive
Set SLIP "keep alive" timeout in seconds. If FRAME_END not received in this
timeout, reconnect occurse. Active "out fill" timeout expected from other
side.
Default value is no timeout.
.It Fl O Ar outfill
Set SLIP "out fill" timeout in seconds. It cause at least one FRAME_END
will be sended during this timeout.
Needed for "keep alive" timeout on other side.
Default value is no timeout.
.It Fl U Ar unit
Set SLIP unit number directly. Use with caution, no check for two
interfaces with same number made.
Default is dynamic assignment.
.It Ar ttyname
Specifies the name of the tty device.
.Ar Ttyname
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
should be a string of the form
.Ql ttyXX or
.Ql /dev/ttyXX.
.El
.Pp
Only the super-user may attach a network interface.
.Pp
To detach the interface, use
.Dq Li ifconfig interface-name down
after killing off the
.Nm slattach
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
process using
.Ql kill -INT .
.Ar Interface-name
is the name that is shown by
.Xr netstat 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
.Pp
To setup slattach to redial the phone when carrier is lost, use the
.Ql \-r redial-cmd
option to specify a script or executable that will reconnect the
serial line to the slip server. For example, the script could redial
the server and log in, etc.
.Pp
To reconfigure the network interface in case the slip unit number
changes, use the
.Ql \-u unit-cmd
option to specify a script or executable that will be invoked as
.Ql sh \-c unit-cmd old new,
where old and new are the slip unit numbers before and after
reconnecting the line. The unit number can change if you have more
than one line disconnect at the same time. The first to succeed in
reconnecting will get the lowest unit number.
.Pp
To kill slattach use
.Ql kill -INT
(SIGINT) which causes it to close the tty and exit.
.Pp
To force a redial, use
.Ql kill -HUP
(SIGHUP) which causes slattach to think carrier was lost and thus invoke
.Ql sh -c redial-command
to reconnect to the server.
.Pp
If you use a hard-wired connection rather than a modem, invoke
slattach with the
.Ql \-l
option in order to ignore carrier on the slip line.
.Sh EXAMPLES
.Bd -literal -offset indent -compact
slattach ttyh8
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
slattach \-s 4800 /dev/tty01
slattach \-c \-s 38400 /dev/sio01
slattach \-r 'kermit -y dial.script >kermit.log 2>&1'
.Ed
.Sh DIAGNOSTICS
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
Look for error messages in /var/log/messages (slattach is a daemon).
Messages indicating the specified interface does not exit, the
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
requested address is unknown, the user is not privileged and tried to
alter an interface's configuration are logged there. Slattach also
logs failure to set the controlling terminal or failure to install
signal handlers. Upon connection and redial the ttyname and baud rate
are logged and on shutdown the ttyname is logged.
.Pp
.Sh FILES
.Pa /var/run/slattach.<tty>.pid ,
.Pp
with
.Aq tty
replaced by the terminal path name component of
.Ar ttyname .
This file contains the numerical process ID of the
.Nm slattach
process and can be examined by scripts in oder to send a signal to
.Nm slattch .
.Sh SEE ALSO
.Xr startslip 1 ,
.Xr sliplogin 8 ,
.Xr netstat 1 ,
.Xr netintro 4 ,
.Xr ifconfig 8 ,
.Xr rc 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.3 .