mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-11 09:50:12 +00:00
44e0389495
the null mount, we currently create a temporary mfs on /tmp, copy
/etc to /tmp, then mount /etc as mfs and copy everything back from
/tmp, then delete the /tmp mfs.
The patch eliminates the temporary /tmp mfs and the subsequent
copying and simply populates the /etc mfs by copying from
/conf/default/etc. This requires that /conf/default/etc contain a
complete copy of all the /etc stuff instead of just overrides. I
don't think that is too much of an extra step in setting up a
diskless environment.
* Provide the ability to make /tmp a memory filesystem independent
of /var. This removes the requirement that /tmp be a symlink to
/var/tmp and this makes the diskless code work with the default
filesystem layout. If a seperate /tmp memory filesystem is
created, the 'tmpsize' environment variable is used to determine
its size (default to 10 Meg).
* Reduce diffs between the -current and -stable versions of these
files to a bare minimum. Only the definition of the shell
function 'mount_md' is different.
Not Objected to by: -arch@, -small@
MFC after: 2 days
137 lines
4.1 KiB
Plaintext
137 lines
4.1 KiB
Plaintext
# 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
|
|
}
|
|
|
|
mount_md() {
|
|
/sbin/mdconfig -a -t malloc -s $1 -u $3
|
|
/sbin/disklabel -r -w md$3 auto
|
|
/sbin/newfs /dev/md$3c
|
|
/sbin/mount /dev/md$3c $2
|
|
}
|
|
|
|
# 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.
|
|
|
|
mount_md 4096 /etc 0
|
|
chkerr $? "MFS mount on /etc"
|
|
/bin/chmod 755 /etc
|
|
|
|
/bin/cp -Rp /conf/default/etc/* /etc
|
|
chkerr $? "cp /conf/default/etc to /etc MFS"
|
|
|
|
# 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 ${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"
|