rc.initdiskless revision 75746
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 75746 2001-04-20 23:10:11Z bsd $ 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 3375746Sbsd# - copy /etc temporarily out of the way to /tmp/etc 3475746Sbsd# - mount /etc as an MFS 3575746Sbsd# - repopulate /etc with the saved off copy 3675746Sbsd# - override files in /etc with files from /conf/*/etc where 3775746Sbsd# '*' is default, netmask of client, ip-address of client 3843803Sdillon# 3955520Sluigi# WARNING: i thing you should not change /etc/rc or strange things could 4055520Sluigi# happen. 4143803Sdillon# 4255520Sluigi# The operator is in charge of setting /conf/*/etc/* things as appropriate. 4355520Sluigi# Typically rc.conf and fstab need to be changed, but possibly 4455520Sluigi# also other files such as inetd.conf etc. 4543803Sdillon 4643803Sdillon# chkerr: 4743803Sdillon# 4843803Sdillon# Routine to check for error 4943803Sdillon# 5043803Sdillon# checks error code and drops into shell on failure. 5143803Sdillon# if shell exits, terminates script as well as /etc/rc. 5251231Ssheldonh# 5343803Sdillonchkerr() { 5451231Ssheldonh case $1 in 5551231Ssheldonh 0) 5651231Ssheldonh ;; 5751231Ssheldonh *) 5843803Sdillon echo "$2 failed: dropping into /bin/sh" 5943803Sdillon /bin/sh 6043803Sdillon # RESUME 6151231Ssheldonh ;; 6251231Ssheldonh esac 6343803Sdillon} 6443803Sdillon 6543803Sdillon# DEBUGGING 6643803Sdillon# 6755520Sluigi# set -v 6843803Sdillon 6951231Ssheldonh# Figure out our interface and IP. 7043803Sdillon# 7155520Sluigibootp_ifc="" 7255520Sluigibootp_ipa="" 7355520Sluigibootp_ipbca="" 7455520Sluigiiflist=`ifconfig -l` 7555520Sluigifor i in ${iflist} ; do 7655520Sluigi set `ifconfig ${i}` 7755520Sluigi while [ $# -ge 1 ] ; do 7855520Sluigi if [ "${bootp_ifc}" = "" -a "$1" = "inet" ] ; then 7955520Sluigi bootp_ifc=${i} ; bootp_ipa=${2} ; shift 8055520Sluigi fi 8155520Sluigi if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ] ; then 8255520Sluigi bootp_ipbca=$2; shift 8355520Sluigi fi 8455520Sluigi shift 8555520Sluigi done 8655520Sluigi if [ "${bootp_ifc}" != "" ] ; then 8755520Sluigi break 8855520Sluigi fi 8955520Sluigidone 9055520Sluigiecho "Interface ${bootp_ifc} IP-Address ${bootp_ipa} Broadcast ${bootp_ipbca}" 9143803Sdillon 9275101Sbsd 9375746Sbsd# Create an MFS /tmp to temporarily hold files from /etc until we 9475746Sbsd# can bootstrap /etc as an MFS. 9575101Sbsd 9675746Sbsd/sbin/mount_mfs -s 4096 -T qp120at dummy /tmp 9775746Sbsdchkerr $? "MFS mount on /tmp" 9875746Sbsd/bin/cp -Rp /etc /tmp 9975746Sbsdchkerr $? "cp /etc to /tmp/etc MFS" 10075101Sbsd 10175746Sbsd/sbin/mount_mfs -s 4096 -T qp120at dummy /etc 10275746Sbsdchkerr $? "MFS mount on /etc" 10375746Sbsd/bin/chmod 755 /etc 10443803Sdillon 10575746Sbsd/bin/cp -Rp /tmp/etc/* /etc 10675746Sbsdchkerr $? "cp /tmp/etc to /etc MFS" 10775746Sbsd 10875746Sbsdrm -rf /tmp/etc 10975746Sbsd/sbin/umount /tmp 11075746Sbsd 11175746Sbsd 11275746Sbsd# Allow for override files to replace files in /etc. Use /conf/*/etc 11375746Sbsd# to find the override files. First choice is default files that 11475746Sbsd# always override, then files that from the directory that matches the 11575746Sbsd# client's broadcast address, finally followed by overrides that match 11675746Sbsd# the client's IP address. 11743803Sdillon# 11875746Sbsd# This way we have some flexibility to handle clusters of machines 11975746Sbsd# on separate subnets. 12075746Sbsd# 12143803Sdillon 12275746Sbsdfor i in default ${bootp_ipbca} ${bootp_ipa} ; do 12375746Sbsd if [ -d /conf/${i}/etc ]; then 12475746Sbsd cp -Rp /conf/${i}/etc/* /etc 12575746Sbsd fi 12675746Sbsddone 12775746Sbsd 12843803Sdillon# Tell /etc/rc to run the specified script after 12943803Sdillon# it does its mounts but before it does anything 13043803Sdillon# else. 13143803Sdillon# 13243803Sdillon# This script is responsible for setting up the 13351231Ssheldonh# diskless mount environment. This can be 13443803Sdillon# overriden by /conf/ME/rc.conf.local if, for 13543803Sdillon# example, you do not want to run the standard 13643803Sdillon# system /etc/rc.diskless2 13743803Sdillon 13843803Sdillondiskless_mount="/etc/rc.diskless2" 139