2ca85e3d5e
a per-machine or per-cluster (with different ways of expressing what's part of a cluster) basis. In order for this to be effective, rc.conf has to be reread after initdiskless is finished. Implement this by adding a hook to etc/rc which rereads rc.conf by request. This can also be implemented by renaming initdiskless to initdiskless.sh and sourcing rc.conf there manually, but it was decided that, that would be uglier than a hook in etc/rc. Developed in concert with: gordon
143 lines
4.0 KiB
Bash
143 lines
4.0 KiB
Bash
#!/bin/sh
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#
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# Copyright (c) 1999 Matt Dillion
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# PROVIDE: initdiskless
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# KEYWORD: FreeBSD
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dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null`
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[ ${dlv:=0} -eq 0 ] && exit 0
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#
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# BOOTP has mounted / for us. Assume a read-only mount. We must then
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# - figure out our IP by querying the interface
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# - mount /etc as an MFS
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# - populate /etc from /conf/default version
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# - override files in /etc with files from /conf/*/etc where
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# '*' is default, netmask of client, ip-address of client
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#
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# The operator is in charge of setting /conf/*/etc/* things as appropriate.
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# Typically rc.conf and fstab need to be changed, but possibly also other
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# files such as inetd.conf etc.
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# chkerr:
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#
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# Routine to check for error
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#
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# checks error code and drops into shell on failure.
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# if shell exits, terminates script as well as /etc/rc.
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#
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chkerr()
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{
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case $1 in
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0)
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;;
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*)
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echo "$2 failed: dropping into /bin/sh"
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/bin/sh
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# RESUME
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;;
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esac
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}
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mount_md()
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{
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/sbin/mdmfs -i 4096 -s $1 -M md$3 $2
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}
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# DEBUGGING
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#
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# set -v
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# Figure out our interface and IP.
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#
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bootp_ifc=""
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bootp_ipa=""
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bootp_ipbca=""
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iflist=`ifconfig -l`
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for i in ${iflist} ; do
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set `ifconfig ${i}`
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while [ $# -ge 1 ] ; do
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if [ "${bootp_ifc}" = "" -a "$1" = "inet" ] ; then
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bootp_ifc=${i} ; bootp_ipa=${2} ; shift
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fi
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if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ] ; then
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bootp_ipbca=$2; shift
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fi
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shift
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done
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if [ "${bootp_ifc}" != "" ] ; then
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break
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fi
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done
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echo "Interface ${bootp_ifc} IP-Address ${bootp_ipa} Broadcast ${bootp_ipbca}"
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if [ -z "`hostname -s`" ]; then
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hostname=`kenv dhcp.host-name`
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hostname $hostname
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echo "Hostname is $hostname"
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fi
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if [ -d /conf/default/etc ]; then
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mount_md 4096 /etc 0
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chkerr $? "MFS mount on /etc"
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/bin/chmod 755 /etc
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/bin/cp -Rp /conf/default/etc/* /etc
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chkerr $? "cp /conf/default/etc to /etc MFS"
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fi
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# Allow for override files to replace files in /etc. Use /conf/*/etc to find
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# the override files. First choice is default files that # always override,
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# then files that from the directory that matches the client's broadcast
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# address, finally followed by overrides that match the client's IP address.
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#
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# This way we have some flexibility to handle clusters of machines on
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# separate subnets.
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for i in ${bootp_ipbca} ${bootp_ipa} ${hostname} ; do
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if [ -d /conf/${i}/etc ]; then
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cp -Rp /conf/${i}/etc/* /etc
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fi
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done
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#
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# if the info is available via dhcp/kenv
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# build the resolv.conf
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#
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if [ ! -e /etc/resolv.conf ]; then
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echo domain `kenv dhcp.domain-name` > /etc/resolv.conf
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set `kenv dhcp.domain-name-servers`
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for ns in `IFS=','; echo $*`; do
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echo nameserver $ns >> /etc/resolv.conf;
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done
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fi
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exit 2 # Tell /etc/rc to re-source rc.conf
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