netconf_hook

#!/usr/bin/ash

configure_device ()
{
    local line i address netmask gateway dns0 dns1 rootserver rootpath defaultrootpath defaultserver

    : > /ip_opts

    if [ -n "${ip_dev}" ]; then
        if [ -n "$netconf_timeout" ]; then
            ipconfig_cmd="ipconfig -t $netconf_timeout ip=${ip_dev}"
        else
            ipconfig_cmd="ipconfig ip=${ip_dev}"
        fi
        # setup network and save some values
        $ipconfig_cmd | while read line; do
            if [ "${line#"IP-Config:"}" != "${line}" ]; then
                continue
            fi

            line="$(echo ${line} | sed -e 's/ :/:/g;s/: /=/g')"

            for i in ${line}; do
                case "${i}" in
                    address=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    netmask=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    gateway=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    dns0=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    dns1=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    rootserver=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    rootpath=*)
                        echo "${i}" >> /ip_opts
                        ;;
                esac
            done
        done

        echo "device=$(echo ${ip_dev} | cut -d: -f6)" >> /ip_opts
        echo "$(echo ${ip_dev} | cut -d: -f6)" >> /ip_devices

        . /ip_opts
        echo "IP-Config: ${device}: ${address}/${netmask}"
        echo "IP-Config: ${device}: gw: ${gateway}    dns0: ${dns0}    dns1: ${dns1}"

        return 0
    fi
}

run_hook ()
{


  : > /ip_devices

  if [ -z "${ip}" -a -n "${nfsaddrs}" ]; then
    ip="${nfsaddrs}"
  fi

  if [ -n "${ip}" ]; then
      case ${ip} in
          ip=*)
              for ip_dev in $(echo ${ip} | sed -e 's/ip=/\n/g' | sed -e 's/:$//g' | sed '/^$/d'); do
                  configure_device
              done
              ;;
          *)
              ip_dev="${ip}"
              configure_device
              ;;
      esac

  fi

  # set link up for lo
  /sbin/ip link set up lo
}

run_cleanuphook ()
{
    for device in $(cat /ip_devices); do
        /sbin/ip addr flush dev "$device"
        /sbin/ip link set down "$device"
    done

    # set ip link down for lo
    /sbin/ip link set down lo
}