1999-02-09 17:17:18 +00:00
|
|
|
#
|
|
|
|
|
# /etc/rc.diskless - general BOOTP startup
|
|
|
|
|
#
|
|
|
|
|
# BOOTP has mounted / for us. Assume a read-only mount. We must then
|
|
|
|
|
# - figure out where the NFS mount is coming from
|
|
|
|
|
# - figure out our IP by querying the interface
|
|
|
|
|
# - retarget /conf/ME softlink to proper configuration script directory
|
|
|
|
|
#
|
|
|
|
|
# It is expected that /etc/fstab and /etc/rc.conf.local will be
|
|
|
|
|
# set by the system operator on the server to be softlinks to
|
|
|
|
|
# /conf/ME/fstab and /conf/ME/rc.conf.local. The system operator may
|
|
|
|
|
# choose to retarget other files as well. The server itself boots
|
|
|
|
|
# properly with its default /conf/ME softlink pointing to
|
|
|
|
|
# /conf/server.host.name.
|
|
|
|
|
#
|
|
|
|
|
# During a diskless boot, we retarget the /conf/ME softlink to point
|
|
|
|
|
# to /conf/DISKLESS.CLIENT.IP.ADDRESS. Thus, various system config
|
|
|
|
|
# files that are softlinks through /conf/ME also get retargeted.
|
|
|
|
|
#
|
|
|
|
|
# SEE SAMPLE FILES IN /usr/share/examples/diskless.
|
|
|
|
|
|
|
|
|
|
# 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() {
|
|
|
|
|
if [ $1 != 0 ]; then
|
|
|
|
|
echo "$2 failed: dropping into /bin/sh"
|
|
|
|
|
/bin/sh
|
|
|
|
|
# RESUME
|
|
|
|
|
fi
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
# DEBUGGING
|
|
|
|
|
#
|
|
|
|
|
set -v
|
|
|
|
|
|
|
|
|
|
# Figure out where the root mount is coming from, synthesize a mount
|
|
|
|
|
# for /usr and mount it.
|
|
|
|
|
#
|
|
|
|
|
# e.g. nfs_root might wind up as "A.B.C.D:/"
|
|
|
|
|
#
|
|
|
|
|
# NOTE! the /usr mount is only temporary so we can access commands necessary
|
|
|
|
|
# to retarget /conf/ME. The actual /usr mount should be part of the
|
|
|
|
|
# retargeted /etc/fstab. See instructions in /usr/share/examples/diskless.
|
|
|
|
|
#
|
|
|
|
|
set `/bin/df /`
|
|
|
|
|
nfs_root=$8
|
|
|
|
|
mount_nfs -o ro ${nfs_root}/usr /usr
|
|
|
|
|
|
|
|
|
|
chkerr $? "mount of /usr"
|
|
|
|
|
|
|
|
|
|
# Figure out our interface and IP.
|
|
|
|
|
#
|
|
|
|
|
|
|
|
|
|
bootp_ifc=`route -n get default | fgrep interface | awk '{ print $2; }'`
|
1999-08-25 16:01:45 +00:00
|
|
|
bootp_ipa=`ifconfig ${bootp_ifc} | fgrep inet | head -1 | awk '{ print $2; }'`
|
1999-02-09 17:17:18 +00:00
|
|
|
|
1999-08-25 16:01:45 +00:00
|
|
|
echo "Interface ${bootp_ifc} IP-Address ${bootp_ipa}"
|
1999-02-09 17:17:18 +00:00
|
|
|
|
|
|
|
|
umount /usr
|
|
|
|
|
|
|
|
|
|
# retarget /conf/ME
|
|
|
|
|
#
|
|
|
|
|
# MFS's background process takes a bit to startup. Various config files
|
|
|
|
|
# on server should be softlinks through /conf/ME. The server's own /conf/ME
|
|
|
|
|
# points to the server's version of the files.
|
|
|
|
|
#
|
|
|
|
|
# We retarget /conf/ME using a -o union mount. This allows
|
|
|
|
|
# us to 'mkdir' over whatever was there previously.
|
|
|
|
|
#
|
|
|
|
|
# WARNING! null mounts cannot handle mmap, and since many programs
|
|
|
|
|
# use mmap (such as 'cp'), we have to copy.
|
|
|
|
|
|
|
|
|
|
mount_mfs -s 256 -T qp120at -o union dummy /conf
|
|
|
|
|
chkerr $? "MFS mount on /conf"
|
|
|
|
|
|
|
|
|
|
mkdir /conf/ME
|
|
|
|
|
cp -Rp /conf/$bootp_ipa/* /conf/ME
|
|
|
|
|
|
|
|
|
|
# retarget the kernel
|
|
|
|
|
#
|
|
|
|
|
|
|
|
|
|
sysctl -w kern.bootfile=/conf/ME/kernel
|
|
|
|
|
|
|
|
|
|
# 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"
|
