#!/bin/sh
#
# Petitboot udhcpc user script.  Should be run by udhcpc when
# there is a change in the dhcp configuration.  For more info
# see the udhcpc man page and the Linux kernel source file
# Documentation/filesystems/nfsroot.txt.
#

PBOOT_USER_EVENT_SOCKET="/tmp/petitboot.ev"
log="/var/log/petitboot/pb-udhcpc.log"

pb_add () {
	# Looks like udhcpc will give us different names, depending if the
	# parameter was in the header, or specified by options
	[ -z "$bootfile" ] && bootfile=${boot_file}

	mac=$(cat /sys/class/net/$interface/address)
	paramstr=''

	# Collect relevant DHCP response parameters into $paramstr
	for name in pxeconffile pxepathprefix reboottime bootfile mac ip \
	        siaddr serverid tftp ipv6 bootfile_url bootfile_param
	do
		value=$(eval "echo \${$name}")
		[ -n "$value" ] || continue;

		paramstr="$paramstr $name=$value"
	done

	pb-event dhcp@${interface} $paramstr

	# Check if an explicit boot file present. If there is, add it as
	# an option directly.
	if [ -z "${bootfile}" ]
	then
		return;
	fi

	paramstr=""

	# Collect relevant parameters to add an option to the bootfile
	# parameter
	for name in rootpath siaddr bootfile mac
        do
                value=$(eval "echo \${$name}")
                [ -n "$value" ] || continue;

                paramstr="$paramstr $name=$value"
        done

	pb-event add@${interface} name="netboot $interface ($bootfile)" \
		$paramstr
}

pb_remove () {
	mac=$(cat /sys/class/net/$interface/address)
	pb-event remove@${interface} mac=$mac
}

case "$1" in
bound)
	pb_add
	;;
deconfig)
	pb_remove
	;;
*)
	;;
esac

printf "--- $1 ---\n" >> ${log}
set >> ${log}
printf "---------------\n" >> ${log}