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.\" $OpenBSD: rbootd.8,v 1.19 2020/05/16 16:58:12 jmc Exp $
.\" $NetBSD: rbootd.8,v 1.3 1995/08/21 17:05:16 thorpej Exp $
.\"
.\" Copyright (c) 1988, 1992 The University of Utah and the Center
.\" for Software Science (CSS).
.\" Copyright (c) 1992, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the Center for Software Science of the University of Utah Computer
.\" Science Department. CSS requests users of this software to return
.\" to css-dist@cs.utah.edu any improvements that they make and grant
.\" CSS redistribution rights.
.\"
.\" 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. 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.
.\"
.\" from: @(#)rbootd.8 8.2 (Berkeley) 12/11/93
.\"
.\" Utah Hdr: rbootd.man 3.1 92/07/06
.\" Author: Jeff Forys, University of Utah CSS
.\"
.Dd $Mdocdate: May 16 2020 $
.Dt RBOOTD 8
.Os
.Sh NAME
.Nm rbootd
.Nd HP remote boot server
.Sh SYNOPSIS
.Nm rbootd
.Op Fl ad
.Op Fl i Ar interface
.Op Ar config_file
.Sh DESCRIPTION
The
.Nm
utility services boot requests from Hewlett-Packard workstations over a
local area network.
All boot files must reside in the boot file directory; further, if a
client supplies path information in its boot request, it will be silently
stripped away before processing.
By default,
.Nm
only responds to requests from machines listed in its configuration file.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl a
Respond to boot requests from any machine.
The configuration file is ignored if this option is specified.
.It Fl d
Run
.Nm
in debug mode.
Packets sent and received are displayed to the terminal.
.It Fl i Ar interface
Service boot requests on specified
.Ar interface .
If unspecified,
.Nm
searches the system interface list for the lowest numbered, configured
.Dq up
interface (excluding loopback).
Ties are broken by choosing the earliest match.
.El
.Pp
Specifying
.Ar config_file
on the command line causes
.Nm
to use a different configuration file from the default.
.Pp
The configuration file is a text file where each line describes a particular
machine.
A line must start with a machine's Ethernet address followed by an optional
list of boot file names.
An Ethernet address is specified in hexadecimal with each of its six octets
separated by a colon.
The boot file names come from the boot file directory.
The Ethernet address and boot file(s) must be separated by whitespace
and/or comma characters.
A pound sign causes the remainder of a line to be ignored.
.Pp
Here is a sample configuration file:
.Bd -literal -offset indent
#
# Ethernet addr boot file(s) comments
#
08:00:09:0:66:ad SYSHPBSD # snake (4.3BSD)
08:00:09:0:59:5b # vandy (anything)
8::9:1:C6:75 SYSHPBSD,SYSHPUX # jaguar (either)
.Ed
.Pp
.Nm
logs status and error messages via
.Xr syslog 3 .
A startup message is always logged, and in the case of fatal errors (or
deadly signals) a message is logged announcing the server's termination.
In general, a non-fatal error is handled by ignoring the event that caused
it (e.g., an invalid Ethernet address in the config file causes that line
to be invalidated).
.Pp
The following signals have the specified effect when sent to the server
process using the
.Xr kill 1
command:
.Bl -tag -width SIGUSR1 -offset indent -compact
.It SIGHUP
Drop all active connections and reconfigure.
.It SIGUSR1
Turn on debugging, do nothing if already on.
.It SIGUSR2
Turn off debugging, do nothing if already off.
.El
.Sh FILES
.Bl -tag -width /etc/examples/rbootd.conf -compact
.It Pa /dev/bpf
Packet-filter device.
.It Pa /etc/rbootd.conf
Configuration file.
.It Pa /etc/examples/rbootd.conf
Example configuration file.
.It Pa /tmp/rbootd.dbg
Debug output.
.It Pa /usr/mdec/rbootd
Directory containing boot files.
.El
.Sh SEE ALSO
.Xr kill 1 ,
.Xr socket 2 ,
.Xr signal 3 ,
.Xr syslog 3
.Sh BUGS
If multiple servers are started on the same interface, each will receive
and respond to the same boot packets.
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