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 "${NONETWORKING}" ]
  24 then
  25         exit 0
  26 fi
  27
  28 # FIXME: stop hardcoding overloading of initramfs-tools functions
  29 . /scripts/functions
  30 . /lib/live/boot/initramfs-tools.sh
  31
  32 log_begin_msg "Preconfiguring networking"
  33
  34 # live-boot script
  35
  36 IFFILE="/root/etc/network/interfaces"
  37
  38 if [ "${STATICIP}" = "frommedia" -a -e  "${IFFILE}" ]
  39 then
  40         # will use existent /etc/network/interfaces
  41         log_end_msg
  42         exit 0
  43 fi
  44
  45 cat > "${IFFILE}" << EOF
  46 auto lo
  47 iface lo inet loopback
  48
  49 EOF
  50
  51 udevadm trigger
  52 udevadm settle
  53
  54 if [ -z "${NETBOOT}" -a -n "${STATICIP}" -a "${STATICIP}" != "frommedia" ]
  55 then
  56         parsed=$(echo "${STATICIP}" | sed -e 's/,/ /g')
  57
  58         for ifline in ${parsed}
  59         do
  60                 ifname="$(echo ${ifline} | cut -f1 -d ':')"
  61                 ifaddress="$(echo ${ifline} | cut -f2 -d ':')"
  62                 ifnetmask="$(echo ${ifline} | cut -f3 -d ':')"
  63                 ifgateway="$(echo ${ifline} | cut -f4 -d ':')"
  64
  65 cat >> "${IFFILE}" << EOF
  66 allow-hotplug ${ifname}
  67 iface ${ifname} inet static
  68     address ${ifaddress}
  69     netmask ${ifnetmask}
  70 EOF
  71
  72 if [ -n "${ifgateway}" ]
  73 then
  74
  75 cat >> "${IFFILE}" << EOF
  76     gateway ${ifgateway}
  77
  78 EOF
  79
  80 fi
  81
  82         done
  83 else
  84         if [ -z "${NETBOOT}" ] || [ -n "${DHCP}" ]
  85         then
  86                 # default, dhcp assigned
  87                 method="dhcp"
  88         else
  89                 # make sure that the preconfigured interface would not get reassigned by dhcp
  90                 # on startup by ifup script - otherwise our root fs might be disconnected!
  91                 method="manual"
  92         fi
  93
  94         # iterate the physical interfaces and add them to the interfaces list and also add when ethdevice= called on cmdline
  95         if [ "${method}" != dhcp ] || ([ ! -x /root/usr/sbin/NetworkManager ] && [ ! -x /root/usr/sbin/wicd ]) || [ ! -z "${ETHDEVICE}" ]
  96         then
  97                 for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*
  98                 do
  99                         [ -e ${interface} ] || continue
 100                         i="$(basename ${interface})"
 101
 102 cat >> "${IFFILE}" << EOF
 103 allow-hotplug ${i}
 104 iface ${i} inet ${method}
 105
 106 EOF
 107
 108                 done
 109         fi
 110
 111         if [ ! -f /root/etc/resolv.conf ] || [ -z "$(cat /root/etc/resolv.conf)" ]
 112         then
 113                 if [ -f /netboot.config ]
 114                 then
 115                         # create a resolv.conf if it is not present or empty
 116                         cp /netboot.config /root/var/log/netboot.config
 117
 118                         rc_search=$(cat netboot.config | awk '/domain/{print $3}')
 119                         rc_server0=$(cat netboot.config | awk '/dns0/{print $5}')
 120                         rc_server1=$(cat netboot.config | awk '/dns0/{print $8}')
 121                         rc_server0="nameserver ${rc_server0}"
 122
 123                         if [ "${rc_server1}" = "0.0.0.0" ]
 124                         then
 125                                 rc_server1=""
 126                         else
 127                                 rc_server1="nameserver ${rc_server1}"
 128                         fi
 129
 130 cat > /root/etc/resolv.conf << EOF
 131 # /etc/resolv.conf
 132 # Autogenerated by live-boot
 133 search ${rc_search}
 134 domain ${rc_search}
 135 ${rc_server0}
 136 ${rc_server1}
 137 EOF
 138
 139                         cat /root/etc/resolv.conf >> /root/var/log/netboot.config
 140                 fi
 141         fi
 142 fi
 143
 144 #if [ ! -x /root/usr/sbin/NetworkManager ]
 145 #then
 146 #       for i in eth0 eth1 eth2 ath0 wlan0
 147 #       do
 148 #               grep -q "iface ${i}" ${IFFILE} && continue
 149 #
 150 #cat >> "${IFFILE}" << EOF
 151 #allow-hotplug ${i}
 152 #iface ${i} inet dhcp
 153 #
 154 #EOF
 155 #
 156 #       done
 157 #fi
 158
 159 log_end_msg