db0b82c71b
in the 3.x branch. Also remove the dependency on /usr to find the boot address/interface. Mostly-submitted-abd-tested-by: MIHIRA Sanpei Yoshiro <sanpei@sanpei.org>
102 lines
2.7 KiB
Plaintext
102 lines
2.7 KiB
Plaintext
# $FreeBSD$
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#
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# /etc/rc.diskless1 - general BOOTP startup
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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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# - fill /conf/etc (writable) with files from /etc, and then update
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# per-machine files from /conf/*/ where * is the IP of the host,
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# the IP of the subnet, "default", or nothing.
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# - mount /conf/etc over /etc so we can see the new files.
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#
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# WARNING: i thing you should not change /etc/rc or strange things could
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# happen.
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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
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# also other 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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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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# 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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# Files in /etc are copied to /conf/etc which is writable. Then
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# per-machine configs from /conf/ip.address/etc are copied onto this
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# directory. First choice is using the client's IP, then the client's
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# broadcast address, then a default configuration.
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# This way we have some flexibility to handle clusters of machines
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# on separate subnets.
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#
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# WARNING! null mounts cannot handle mmap, and since many programs
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# use mmap (such as 'cp'), we have to copy.
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#
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mount_mfs -s 2048 -T qp120at dummy /conf/etc
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cp -Rp /etc/* /conf/etc
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chkerr $? "MFS mount on /conf/etc"
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if [ -d /conf/${bootp_ipa} ] ; then
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cp -Rp /conf/${bootp_ipa}/etc/* /conf/etc
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elif [ -d /conf/${bootp_ipbca} ] ; then
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cp -Rp /conf/${bootp_ipbca}/etc/* /conf/etc
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else
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cp -Rp /conf/default/etc/* /conf/etc
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fi
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# Make the new directory available as /etc
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#
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mount_null /conf/etc /etc
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# Tell /etc/rc to run the specified script after
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# it does its mounts but before it does anything
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# else.
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#
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# This script is responsible for setting up the
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# diskless mount environment. This can be
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# overriden by /conf/ME/rc.conf.local if, for
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# example, you do not want to run the standard
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# system /etc/rc.diskless2
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diskless_mount="/etc/rc.diskless2"
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