debian/patches/15_networking_grml.dpatch

   1 #! /bin/sh /usr/share/dpatch/dpatch-run
   2 ## 15_networking_grml.dpatch by Christian Hofstaedtler <ch@grml.org>
   3 ## Licensed under GPLv2+.
   4 ##
   5 ## All lines beginning with `## DP:' are a description of the patch.
   6 ## DP: Ship our own networking script, which is compatible with the kernel's
   7 ## DP: notion of ip= as well as resolvconf.
   8
   9 @DPATCH@
  10
  11 diff a/scripts/live-bottom/23networking_grml b/scripts/live-bottom/23networking_grml
  12 --- /dev/null
  13 +++ b/scripts/live-bottom/23networking_grml
  14 @@ -0,0 +1,102 @@
  15 +#!/bin/sh
  16 +
  17 +#set -e
  18 +
  19 +# initramfs-tools header
  20 +
  21 +PREREQ=""
  22 +
  23 +prereqs()
  24 +{
  25 +   echo "${PREREQ}"
  26 +}
  27 +
  28 +case "${1}" in
  29 +   prereqs)
  30 +      prereqs
  31 +      exit 0
  32 +   ;;
  33 +esac
  34 +
  35 +. /scripts/live-functions
  36 +
  37 +if [ -n "${NONETWORKING}" ]; then
  38 +   exit 0
  39 +fi
  40 +
  41 +modprobe af_packet # req'd for DHCP
  42 +
  43 +# initialize udev
  44 +# (this /might/ be required for firmware loading to complete)
  45 +if grep -q noudev /proc/cmdline; then
  46 +   log_begin_msg "Networking: Skipping udev as requested via bootoption noudev."
  47 +else
  48 +   udevadm trigger
  49 +   udevadm settle
  50 +fi
  51 +
  52 +if [ -n "${IP}" ]; then
  53 +   # call into initramfs-tools provided network setup functions, so basic
  54 +   # networking is fine.
  55 +   log_begin_msg "Networking: Waiting for basic network to come up..."
  56 +   configure_networking
  57 +fi
  58 +
  59 +# prepare a new /etc/network/interfaces file (and, possibly, a new /etc/resolv.conf)
  60 +IFFILE="/root/etc/network/interfaces"
  61 +RESOLVCONF="/root/etc/resolv.conf"
  62 +
  63 +# config for loopback networking
  64 +cat > $IFFILE << EOF
  65 +# Initially generated on boot by initramfs' 23networking.
  66 +
  67 +auto lo
  68 +iface lo inet loopback
  69 +
  70 +EOF
  71 +
  72 +# generate config for each present network device
  73 +for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*; do
  74 +    [ -e ${interface} ] || continue
  75 +    interface=$(basename ${interface})
  76 +    method="dhcp"
  77 +
  78 +    # NODHCP or a previously run ipconfig mean that ifupdown should never
  79 +    # touch this interface (IP-stack wise).
  80 +    netconfig=/tmp/net-${interface}.conf
  81 +    if [ -n "$NODHCP" ] || [ -e "${netconfig}" ]; then
  82 +        method="manual"
  83 +    fi
  84 +
  85 +    cat >> $IFFILE << EOF
  86 +allow-hotplug ${interface}
  87 +iface ${interface} inet ${method}
  88 +EOF
  89 +
  90 +    # DNS for resolvconf and /etc/resolv.conf
  91 +    if [ -e "${netconfig}" ]; then
  92 +        . "${netconfig}"
  93 +        if [ -n "${DNSDOMAIN}" ]; then
  94 +            echo "    dns-search ${DNSDOMAIN}" >> $IFFILE
  95 +        fi
  96 +        # make sure we don't have any 0.0.0.0 nameservers
  97 +        IPV4DNSLIST=""
  98 +        for IPV4DNS in ${IPV4DNS0} ${IPV4DNS1}; do
  99 +            [ -n "${IPV4DNS}" ] || continue
 100 +            [ "${IPV4DNS}" != "0.0.0.0" ] || continue
 101 +            IPV4DNSLIST="${IPV4DNSLIST}${IPV4DNS} "
 102 +        done
 103 +        if [ -n "${IPV4DNSLIST}" ]; then
 104 +            echo "    dns-nameservers ${IPV4DNSLIST}" >> $IFFILE
 105 +            for IPV4DNS in ${IPV4DNSLIST}; do
 106 +                echo "nameserver ${IPV4DNS}" >> $RESOLVCONF
 107 +            done
 108 +        fi
 109 +    fi
 110 +    unset DEVICE IPV4ADDR IPV4BROADCAST IPV4NETMASK IPV4GATEWAY IPV4DNS0 IPV4DNS1 HOSTNAME DNSDOMAIN NISDOMAIN ROOTSERVER ROOTPATH filename
 111 +    unset IPV4DNS IPV4DNSLIST
 112 +
 113 +    echo>> $IFFILE
 114 +done
 115 +
 116 +