rc.initdiskless revision 66830
166830Sobrien# Copyright (c) 1999 Matt Dillion 266830Sobrien# All rights reserved. 366830Sobrien# 466830Sobrien# Redistribution and use in source and binary forms, with or without 566830Sobrien# modification, are permitted provided that the following conditions 666830Sobrien# are met: 766830Sobrien# 1. Redistributions of source code must retain the above copyright 866830Sobrien# notice, this list of conditions and the following disclaimer. 966830Sobrien# 2. Redistributions in binary form must reproduce the above copyright 1066830Sobrien# notice, this list of conditions and the following disclaimer in the 1166830Sobrien# documentation and/or other materials provided with the distribution. 1266830Sobrien# 1366830Sobrien# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1466830Sobrien# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1566830Sobrien# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1666830Sobrien# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1766830Sobrien# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1866830Sobrien# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1966830Sobrien# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2066830Sobrien# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2166830Sobrien# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2266830Sobrien# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2366830Sobrien# SUCH DAMAGE. 2466830Sobrien# 2551231Ssheldonh# $FreeBSD: head/etc/rc.initdiskless 66830 2000-10-08 19:20:36Z obrien $ 2651231Ssheldonh# 2766830Sobrien 2866830Sobrien# 2955520Sluigi# /etc/rc.diskless1 - general BOOTP startup 3043803Sdillon# 3155520Sluigi# BOOTP has mounted / for us. Assume a read-only mount. We must then 3255520Sluigi# - figure out our IP by querying the interface 3355520Sluigi# - fill /conf/etc (writable) with files from /etc, and then update 3455520Sluigi# per-machine files from /conf/*/ where * is the IP of the host, 3555520Sluigi# the IP of the subnet, "default", or nothing. 3655520Sluigi# - mount /conf/etc over /etc so we can see the new files. 3743803Sdillon# 3855520Sluigi# WARNING: i thing you should not change /etc/rc or strange things could 3955520Sluigi# happen. 4043803Sdillon# 4155520Sluigi# The operator is in charge of setting /conf/*/etc/* things as appropriate. 4255520Sluigi# Typically rc.conf and fstab need to be changed, but possibly 4355520Sluigi# also other files such as inetd.conf etc. 4443803Sdillon 4543803Sdillon# chkerr: 4643803Sdillon# 4743803Sdillon# Routine to check for error 4843803Sdillon# 4943803Sdillon# checks error code and drops into shell on failure. 5043803Sdillon# if shell exits, terminates script as well as /etc/rc. 5151231Ssheldonh# 5243803Sdillonchkerr() { 5351231Ssheldonh case $1 in 5451231Ssheldonh 0) 5551231Ssheldonh ;; 5651231Ssheldonh *) 5743803Sdillon echo "$2 failed: dropping into /bin/sh" 5843803Sdillon /bin/sh 5943803Sdillon # RESUME 6051231Ssheldonh ;; 6151231Ssheldonh esac 6243803Sdillon} 6343803Sdillon 6443803Sdillon# DEBUGGING 6543803Sdillon# 6655520Sluigi# set -v 6743803Sdillon 6851231Ssheldonh# Figure out our interface and IP. 6943803Sdillon# 7055520Sluigibootp_ifc="" 7155520Sluigibootp_ipa="" 7255520Sluigibootp_ipbca="" 7355520Sluigiiflist=`ifconfig -l` 7455520Sluigifor i in ${iflist} ; do 7555520Sluigi set `ifconfig ${i}` 7655520Sluigi while [ $# -ge 1 ] ; do 7755520Sluigi if [ "${bootp_ifc}" = "" -a "$1" = "inet" ] ; then 7855520Sluigi bootp_ifc=${i} ; bootp_ipa=${2} ; shift 7955520Sluigi fi 8055520Sluigi if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ] ; then 8155520Sluigi bootp_ipbca=$2; shift 8255520Sluigi fi 8355520Sluigi shift 8455520Sluigi done 8555520Sluigi if [ "${bootp_ifc}" != "" ] ; then 8655520Sluigi break 8755520Sluigi fi 8855520Sluigidone 8955520Sluigiecho "Interface ${bootp_ifc} IP-Address ${bootp_ipa} Broadcast ${bootp_ipbca}" 9055520Sluigi 9155520Sluigi# Files in /etc are copied to /conf/etc which is writable. Then 9255520Sluigi# per-machine configs from /conf/ip.address/etc are copied onto this 9355520Sluigi# directory. First choice is using the client's IP, then the client's 9455520Sluigi# broadcast address, then a default configuration. 9555520Sluigi# This way we have some flexibility to handle clusters of machines 9655520Sluigi# on separate subnets. 9743803Sdillon# 9843803Sdillon# WARNING! null mounts cannot handle mmap, and since many programs 9943803Sdillon# use mmap (such as 'cp'), we have to copy. 10051231Ssheldonh# 10155520Sluigimount_mfs -s 2048 -T qp120at dummy /conf/etc 10255520Sluigicp -Rp /etc/* /conf/etc 10355520Sluigichkerr $? "MFS mount on /conf/etc" 10443803Sdillon 10555520Sluigiif [ -d /conf/${bootp_ipa} ] ; then 10655520Sluigi cp -Rp /conf/${bootp_ipa}/etc/* /conf/etc 10755520Sluigielif [ -d /conf/${bootp_ipbca} ] ; then 10855520Sluigi cp -Rp /conf/${bootp_ipbca}/etc/* /conf/etc 10955520Sluigielse 11055520Sluigi cp -Rp /conf/default/etc/* /conf/etc 11155520Sluigifi 11243803Sdillon 11355520Sluigi# Make the new directory available as /etc 11443803Sdillon# 11555520Sluigimount_null /conf/etc /etc 11643803Sdillon 11743803Sdillon# Tell /etc/rc to run the specified script after 11843803Sdillon# it does its mounts but before it does anything 11943803Sdillon# else. 12043803Sdillon# 12143803Sdillon# This script is responsible for setting up the 12251231Ssheldonh# diskless mount environment. This can be 12343803Sdillon# overriden by /conf/ME/rc.conf.local if, for 12443803Sdillon# example, you do not want to run the standard 12543803Sdillon# system /etc/rc.diskless2 12643803Sdillon 12743803Sdillondiskless_mount="/etc/rc.diskless2" 128