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# Copyright (c) 1999 Matt Dillion
# All rights reserved.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
#
# $FreeBSD$
#
#
# /etc/rc.diskless1 - general BOOTP startup
#
# BOOTP has mounted / for us. Assume a read-only mount. We must then
# - figure out our IP by querying the interface
# - copy /etc temporarily out of the way to /tmp/etc
# - mount /etc as an MFS
# - repopulate /etc with the saved off copy
# - override files in /etc with files from /conf/*/etc where
# '*' is default, netmask of client, ip-address of client
#
# WARNING: i thing you should not change /etc/rc or strange things could
# happen.
#
# The operator is in charge of setting /conf/*/etc/* things as appropriate.
# Typically rc.conf and fstab need to be changed, but possibly
# also other files such as inetd.conf etc.
# chkerr:
#
# Routine to check for error
#
# checks error code and drops into shell on failure.
# if shell exits, terminates script as well as /etc/rc.
#
chkerr() {
case $1 in
0)
;;
*)
echo "$2 failed: dropping into /bin/sh"
/bin/sh
# RESUME
;;
esac
}
# DEBUGGING
#
# set -v
# Figure out our interface and IP.
#
bootp_ifc=""
bootp_ipa=""
bootp_ipbca=""
iflist=`ifconfig -l`
for i in ${iflist} ; do
set `ifconfig ${i}`
while [ $# -ge 1 ] ; do
if [ "${bootp_ifc}" = "" -a "$1" = "inet" ] ; then
bootp_ifc=${i} ; bootp_ipa=${2} ; shift
fi
if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ] ; then
bootp_ipbca=$2; shift
fi
shift
done
if [ "${bootp_ifc}" != "" ] ; then
break
fi
done
echo "Interface ${bootp_ifc} IP-Address ${bootp_ipa} Broadcast ${bootp_ipbca}"
# Create an MFS /tmp to temporarily hold files from /etc until we
# can bootstrap /etc as an MFS.
/sbin/mount_mfs -s 4096 -T qp120at dummy /tmp
chkerr $? "MFS mount on /tmp"
/bin/cp -Rp /etc /tmp
chkerr $? "cp /etc to /tmp/etc MFS"
/sbin/mount_mfs -s 4096 -T qp120at dummy /etc
chkerr $? "MFS mount on /etc"
/bin/chmod 755 /etc
/bin/cp -Rp /tmp/etc/* /etc
chkerr $? "cp /tmp/etc to /etc MFS"
rm -rf /tmp/etc
/sbin/umount /tmp
# Allow for override files to replace files in /etc. Use /conf/*/etc
# to find the override files. First choice is default files that
# always override, then files that from the directory that matches the
# client's broadcast address, finally followed by overrides that match
# the client's IP address.
#
# This way we have some flexibility to handle clusters of machines
# on separate subnets.
#
for i in default ${bootp_ipbca} ${bootp_ipa} ; do
if [ -d /conf/${i}/etc ]; then
cp -Rp /conf/${i}/etc/* /etc
fi
done
# Tell /etc/rc to run the specified script after
# it does its mounts but before it does anything
# else.
#
# This script is responsible for setting up the
# diskless mount environment. This can be
# overriden by /conf/ME/rc.conf.local if, for
# example, you do not want to run the standard
# system /etc/rc.diskless2
diskless_mount="/etc/rc.diskless2"
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