1998-08-29 21:31:55 +04:00
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.\" $NetBSD: ttyaction.5,v 1.3 1998/08/29 17:31:57 tsarna Exp $
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1996-11-14 20:40:55 +03:00
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.\"
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.\" Copyright (c) 1996 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Gordon W. Ross.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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1997-10-09 01:59:52 +04:00
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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1996-11-14 20:40:55 +03:00
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd August 24, 1996
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.Dt TTYACTION 5
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.Os
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.Sh NAME
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.Nm ttyaction
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.Nd ttyaction file format
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.Sh DESCRIPTION
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The
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.Nm ttyaction
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file specifies site-specific commands to run
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when a login session begins and ends. The
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.Nm ttyaction
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file contains a list of newline separated records, where
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each record has the following three fields:
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.Bl -tag -width username
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.It ttyname
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Name of the tty line(s) on which this line should apply.
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The name is relative to the
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.Pa /dev
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directory, similar to how such devices are named in the
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.Pa /etc/ttys
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file.
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.It action
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Name of the action for which this line should apply.
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1998-08-29 21:31:55 +04:00
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The action names currently defined are "login", "getty",
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"telnetd" and "rlogind"
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1996-11-14 20:40:55 +03:00
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which indicate which program is processing this file.
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1998-08-29 21:31:55 +04:00
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(Note that "login" begins a login session, while the other
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three are run after a login session ends.)
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1996-11-14 20:40:55 +03:00
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.It command
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What command to run if this record matches.
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.El
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.Pp
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The first two fields are delimited with blanks or tabs,
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and the command field is all text to the end of the line.
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Either or both of first two fields may contain wildcard
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match patterns as implemented by the
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.Fn fnmatch
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library function.
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.Pp
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All command strings are executed by passing them to
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.Pa /bin/sh \-c
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running as "root," with an environment containing:
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.Bd -literal -offset indent
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TTY=ttyname
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ACT=action
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USER=username
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PATH=_PATH_STDPATH
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.Ed
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.Pp
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These variables may be used directly in the shell command
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part of the record for simple tasks such as changing the
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ownership of related devices. For example:
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.Bd -literal -offset indent
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console * chown ${USER}.tty /dev/mouse
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.Ed
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.Pp
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will
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.Fa chown
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the mouse appropriately when the console owner changes.
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.Sh EXAMPLE
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Here are some more example records:
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.Bd -literal -offset indent
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tty0 login /somewhere/tty_setup ${TTY}
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tty0 getty /somewhere/tty_clean ${TTY}
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* * /somewhere/ttyfrob ${TTY} ${ACT}
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.Ed
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.Pp
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.Sh SEE ALSO
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.Xr fnmatch 3 ,
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.Xr ttyaction 3
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.Sh HISTORY
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The ideas for the
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.Pa /etc/ttyaction
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file were inspired by the
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.Pa /etc/fbtab
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file under SunOS.
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