initramfs-tools/scripts/live-bottom/23networking

   1 #!/bin/sh
   2
   3 #set -e
   4
   5 # initramfs-tools header
   6
   7 PREREQ=""
   8
   9 prereqs()
  10 {
  11         echo "${PREREQ}"
  12 }
  13
  14 case "${1}" in
  15         prereqs)
  16                 prereqs
  17                 exit 0
  18                 ;;
  19 esac
  20
  21 # live-boot header
  22
  23 if [ -n "${NONETWORKING}" ]
  24 then
  25         exit 0
  26 fi
  27
  28 . /scripts/live-functions
  29
  30 log_begin_msg "Preconfiguring networking"
  31
  32 # live-boot script
  33
  34 IFFILE="/root/etc/network/interfaces"
  35
  36 if [ "${STATICIP}" = "frommedia" -a -e  "${IFFILE}" ]
  37 then
  38         # will use existent /etc/network/interfaces
  39         log_end_msg
  40         exit 0
  41 fi
  42
  43 cat > "${IFFILE}" << EOF
  44 auto lo
  45 iface lo inet loopback
  46
  47 EOF
  48
  49 udevadm trigger
  50 udevadm settle
  51
  52 if [ -z "${NETBOOT}" -a -n "${STATICIP}" -a "${STATICIP}" != "frommedia" ]
  53 then
  54         parsed=$(echo "${STATICIP}" | sed -e 's/,/ /g')
  55
  56         for ifline in ${parsed}
  57         do
  58                 ifname="$(echo ${ifline} | cut -f1 -d ':')"
  59                 ifaddress="$(echo ${ifline} | cut -f2 -d ':')"
  60                 ifnetmask="$(echo ${ifline} | cut -f3 -d ':')"
  61                 ifgateway="$(echo ${ifline} | cut -f4 -d ':')"
  62
  63 cat >> "${IFFILE}" << EOF
  64 allow-hotplug ${ifname}
  65 iface ${ifname} inet static
  66     address ${ifaddress}
  67     netmask ${ifnetmask}
  68 EOF
  69
  70 if [ -n "${ifgateway}" ]
  71 then
  72
  73 cat >> "${IFFILE}" << EOF
  74     gateway ${ifgateway}
  75
  76 EOF
  77
  78 fi
  79
  80         done
  81 else
  82         if [ -z "${NETBOOT}" ] || [ -n "${DHCP}" ]
  83         then
  84                 # default, dhcp assigned
  85                 method="dhcp"
  86         else
  87                 # make sure that the preconfigured interface would not get reassigned by dhcp
  88                 # on startup by ifup script - otherwise our root fs might be disconnected!
  89                 method="manual"
  90         fi
  91
  92         # iterate the physical interfaces and add them to the interfaces list and also add when ethdevice= called on cmdline
  93         if [ "${method}" != dhcp ] || ([ ! -x /root/usr/sbin/NetworkManager ] && [ ! -x /root/usr/sbin/wicd ]) || [ ! -z "${ETHDEVICE}" ]
  94         then
  95                 for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*
  96                 do
  97                         [ -e ${interface} ] || continue
  98                         i="$(basename ${interface})"
  99
 100 cat >> "${IFFILE}" << EOF
 101 allow-hotplug ${i}
 102 iface ${i} inet ${method}
 103
 104 EOF
 105
 106                 done
 107         fi
 108
 109         if [ ! -f /root/etc/resolv.conf ] || [ -z "$(cat /root/etc/resolv.conf)" ]
 110         then
 111                 if [ -f /netboot.config ]
 112                 then
 113                         # create a resolv.conf if it is not present or empty
 114                         cp /netboot.config /root/var/log/netboot.config
 115
 116                         rc_search=$(cat netboot.config | awk '/domain/{print $3}')
 117                         rc_server0=$(cat netboot.config | awk '/dns0/{print $5}')
 118                         rc_server1=$(cat netboot.config | awk '/dns0/{print $8}')
 119                         rc_server0="nameserver ${rc_server0}"
 120
 121                         if [ "${rc_server1}" = "0.0.0.0" ]
 122                         then
 123                                 rc_server1=""
 124                         else
 125                                 rc_server1="nameserver ${rc_server1}"
 126                         fi
 127
 128 cat > /root/etc/resolv.conf << EOF
 129 # /etc/resolv.conf
 130 # Autogenerated by live-boot
 131 search ${rc_search}
 132 domain ${rc_search}
 133 ${rc_server0}
 134 ${rc_server1}
 135 EOF
 136
 137                         cat /root/etc/resolv.conf >> /root/var/log/netboot.config
 138                 fi
 139         fi
 140 fi
 141
 142 #if [ ! -x /root/usr/sbin/NetworkManager ]
 143 #then
 144 #       for i in eth0 eth1 eth2 ath0 wlan0
 145 #       do
 146 #               grep -q "iface ${i}" ${IFFILE} && continue
 147 #
 148 #cat >> "${IFFILE}" << EOF
 149 #allow-hotplug ${i}
 150 #iface ${i} inet dhcp
 151 #
 152 #EOF
 153 #
 154 #       done
 155 #fi
 156
 157 log_end_msg