components/9990-netbase.sh

   1 #!/bin/sh
   2
   3 #set -e
   4
   5 Netbase ()
   6 {
   7         if [ -n "${NONETWORKING}" ]
   8         then
   9                 return
  10         fi
  11
  12         # FIXME: stop hardcoding overloading of initramfs-tools functions
  13         . /scripts/functions
  14         . /lib/live/boot/9990-initramfs-tools.sh
  15
  16         log_begin_msg "Preconfiguring networking"
  17
  18         IFFILE="/root/etc/network/interfaces"
  19         if [ -L /root/etc/resolv.conf ] ; then
  20                 # assume we have resolvconf
  21                 DNSFILE="/root/etc/resolvconf/resolv.conf.d/base"
  22         else
  23                 DNSFILE="/root/etc/resolv.conf"
  24         fi
  25
  26         if [ "${STATICIP}" = "frommedia" ] && [ -e "${IFFILE}" ]
  27         then
  28                 # will use existent /etc/network/interfaces
  29                 log_end_msg
  30                 return
  31         fi
  32
  33 cat > "${IFFILE}" << EOF
  34 auto lo
  35 iface lo inet loopback
  36
  37 EOF
  38
  39         udevadm trigger
  40         udevadm settle
  41
  42         if [ -z "${NETBOOT}" ] && [ -n "${STATICIP}" ] && [ "${STATICIP}" != "frommedia" ]
  43         then
  44                 parsed=$(echo "${STATICIP}" | sed -e 's|,| |g')
  45
  46                 for ifline in ${parsed}
  47                 do
  48                         ifname="$(echo ${ifline} | cut -f1 -d ':')"
  49                         ifaddress="$(echo ${ifline} | cut -f2 -d ':')"
  50                         ifnetmask="$(echo ${ifline} | cut -f3 -d ':')"
  51                         ifgateway="$(echo ${ifline} | cut -f4 -d ':')"
  52
  53 cat >> "${IFFILE}" << EOF
  54 allow-hotplug ${ifname}
  55 iface ${ifname} inet static
  56     address ${ifaddress}
  57     netmask ${ifnetmask}
  58 EOF
  59
  60                         if [ -n "${ifgateway}" ]
  61                         then
  62
  63 cat >> "${IFFILE}" << EOF
  64     gateway ${ifgateway}
  65
  66 EOF
  67
  68                         fi
  69                 done
  70         else
  71                 if [ -z "${NETBOOT}" ] || [ -n "${DHCP}" ]
  72                 then
  73                         # default, dhcp assigned
  74                         method="dhcp"
  75                 else
  76                         # make sure that the preconfigured interface would not get reassigned by dhcp
  77                         # on startup by ifup script - otherwise our root fs might be disconnected!
  78                         method="manual"
  79                 fi
  80
  81                 # iterate the physical interfaces and add them to the interfaces list and also add when ethdevice= called on cmdline
  82                 if [ "${method}" != dhcp ] || ([ ! -x /root/usr/sbin/NetworkManager ] && [ ! -x /root/usr/sbin/wicd ]) || [ ! -z "${ETHDEVICE}" ]
  83                 then
  84                         for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*
  85                         do
  86                                 [ -e ${interface} ] || continue
  87                                 i="$(basename ${interface})"
  88
  89 cat >> "${IFFILE}" << EOF
  90 allow-hotplug ${i}
  91 iface ${i} inet ${method}
  92
  93 EOF
  94
  95                         done
  96                 fi
  97
  98                 if [ ! -f "${DNSFILE}" ] || [ -z "$(cat ${DNSFILE})" ]
  99                 then
 100                         if [ -f /netboot.config ]
 101                         then
 102                                 # create a resolv.conf if it is not present or empty
 103                                 cp /netboot.config /root/var/log/netboot.config
 104
 105                                 rc_search=$(cat netboot.config | awk '/domain/ { print $3 }')
 106                                 rc_server0="$(cat netboot.config | awk '/dns0/ { print $5 }')"
 107
 108 cat > $DNSFILE << EOF
 109 search ${rc_search}
 110 domain ${rc_search}
 111 nameserver ${rc_server0}
 112 EOF
 113
 114                                 rc_server1=$(cat netboot.config | awk '/dns0/ { print $8 }')
 115
 116                                 if [ "${rc_server1}" != "0.0.0.0" ]
 117                                 then
 118                                         echo "nameserver ${rc_server1}" >> $DNSFILE
 119                                 fi
 120
 121                                 cat $DNSFILE >> /root/var/log/netboot.config
 122                         fi
 123                 fi
 124         fi
 125
 126         log_end_msg
 127 }