modules.d/45ifcfg/write-ifcfg.sh

   1 #!/bin/sh
   2 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
   3 # ex: ts=8 sw=4 sts=4 et filetype=sh
   4
   5 # NFS root might have reached here before /tmp/net.ifaces was written
   6 udevadm settle --timeout=30
   7 # Don't write anything if we don't know our bootdev
   8 [ -f /tmp/net.ifaces ] || return 1
   9
  10 read IFACES < /tmp/net.ifaces
  11
  12 if [ -e /tmp/bond.info ]; then
  13     . /tmp/bond.info
  14 fi
  15
  16 if [ -e /tmp/bridge.info ]; then
  17     . /tmp/bridge.info
  18 fi
  19
  20 mkdir -m 0755 -p /tmp/ifcfg/
  21 mkdir -m 0755 -p /tmp/ifcfg-leases/
  22
  23 for netif in $IFACES ; do
  24     # bridge?
  25     unset bridge
  26     unset bond
  27     uuid=$(cat /proc/sys/kernel/random/uuid)
  28     if [ "$netif" = "$bridgename" ]; then
  29         bridge=yes
  30     elif [ "$netif" = "$bondname" ]; then
  31     # $netif can't be bridge and bond at the same time
  32         bond=yes
  33     fi
  34     cat /sys/class/net/$netif/address > /tmp/net.$netif.hwaddr
  35     {
  36         echo "# Generated by dracut initrd"
  37         echo "DEVICE=$netif"
  38         echo "ONBOOT=yes"
  39         echo "NETBOOT=yes"
  40         echo "UUID=$uuid"
  41         [ -n "$macaddr" ] && echo "MACADDR=$macaddr"
  42         [ -n "$mtu" ] && echo "MTU=$mtu"
  43         if [ -f /tmp/net.$netif.lease ]; then
  44             strstr "$ip" '*:*:*' &&
  45             echo "DHCPV6C=yes"
  46             echo "BOOTPROTO=dhcp"
  47             cp /tmp/net.$netif.lease /tmp/ifcfg-leases/dhclient-$uuid-$netif.lease
  48         else
  49             echo "BOOTPROTO=none"
  50         # If we've booted with static ip= lines, the override file is there
  51             [ -e /tmp/net.$netif.override ] && . /tmp/net.$netif.override
  52             echo "IPADDR=$ip"
  53             if strstr "$mask" "."; then
  54                 echo "NETMASK=$mask"
  55             else
  56                 echo "PREFIX=$mask"
  57             fi
  58             [ -n "$gw" ] && echo "GATEWAY=$gw"
  59         fi
  60     } > /tmp/ifcfg/ifcfg-$netif
  61
  62     # bridge needs different things written to ifcfg
  63     if [ -z "$bridge" ] && [ -z "$bond" ]; then
  64         # standard interface
  65         {
  66             echo "HWADDR=$(cat /sys/class/net/$netif/address)"
  67             echo "TYPE=Ethernet"
  68             echo "NAME=\"Boot Disk\""
  69             [ -n "$mtu" ] && echo "MTU=$mtu"
  70         } >> /tmp/ifcfg/ifcfg-$netif
  71     fi
  72
  73     if [ -n "$bond" ] ; then
  74         # bond interface
  75         {
  76             # This variable is an indicator of a bond interface for initscripts
  77             echo "BONDING_OPTS=\"$bondoptions\""
  78             echo "NAME=\"Boot Disk\""
  79         } >> /tmp/ifcfg/ifcfg-$netif
  80
  81         for slave in $bondslaves ; do
  82             # Set ONBOOT=no to prevent initscripts from trying to setup already bonded physical interface
  83             # write separate ifcfg file for the raw eth interface
  84             {
  85                 echo "# Generated by dracut initrd"
  86                 echo "DEVICE=$slave"
  87                 echo "TYPE=Ethernet"
  88                 echo "ONBOOT=no"
  89                 echo "NETBOOT=yes"
  90                 echo "HWADDR=$(cat /sys/class/net/$slave/address)"
  91                 echo "SLAVE=yes"
  92                 echo "MASTER=$netif"
  93                 echo "NAME=$slave"
  94             } >> /tmp/ifcfg/ifcfg-$slave
  95         done
  96     fi
  97
  98     if [ -n "$bridge" ] ; then
  99         # bridge
 100         {
 101             echo "TYPE=Bridge"
 102             echo "NAME=\"Boot Disk\""
 103         } >> /tmp/ifcfg/ifcfg-$netif
 104         if [ "$ethname" = "$bondname" ] ; then
 105             {
 106                 # Set ONBOOT=no to prevent initscripts from trying to setup already bridged bond interface
 107                 echo "# Generated by dracut initrd"
 108                 echo "DEVICE=$bondname"
 109                 echo "ONBOOT=no"
 110                 echo "NETBOOT=yes"
 111                 # This variable is an indicator of a bond interface for initscripts
 112                 echo "BONDING_OPTS=\"$bondoptions\""
 113                 echo "BRIDGE=$netif"
 114                 echo "NAME=\"$bondname\""
 115             } >> /tmp/ifcfg/ifcfg-$bondname
 116             for slave in $bondslaves ; do
 117                 # write separate ifcfg file for the raw eth interface
 118                 # Set ONBOOT=no to prevent initscripts from trying to setup already bridged physical interface
 119                 {
 120                     echo "# Generated by dracut initrd"
 121                     echo "DEVICE=$slave"
 122                     echo "TYPE=Ethernet"
 123                     echo "ONBOOT=no"
 124                     echo "NETBOOT=yes"
 125                     echo "HWADDR=$(cat /sys/class/net/$slave/address)"
 126                     echo "SLAVE=yes"
 127                     echo "MASTER=$bondname"
 128                     echo "NAME=$slave"
 129                 } >> /tmp/ifcfg/ifcfg-$slave
 130             done
 131         else
 132             # write separate ifcfg file for the raw eth interface
 133             {
 134                 echo "# Generated by dracut initrd"
 135                 echo "DEVICE=$ethname"
 136                 echo "TYPE=Ethernet"
 137                 echo "ONBOOT=no"
 138                 echo "NETBOOT=yes"
 139                 echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
 140                 echo "BRIDGE=$netif"
 141                 echo "NAME=$ethname"
 142             } >> /tmp/ifcfg/ifcfg-$ethname
 143         fi
 144     fi
 145     i=1
 146     for ns in $(getargs nameserver); do
 147         echo "DNS${i}=${ns}" >> /tmp/ifcfg/ifcfg-$netif
 148         i=$((i+1))
 149     done
 150 done
 151
 152 # Pass network opts
 153 mkdir -m 0755 -p /run/initramfs/state/etc/sysconfig/network-scripts
 154 mkdir -m 0755 -p /run/initramfs/state/var/lib/dhclient
 155 echo "files /etc/sysconfig/network-scripts" >> /run/initramfs/rwtab
 156 echo "files /var/lib/dhclient" >> /run/initramfs/rwtab
 157 {
 158     cp /tmp/net.* /run/initramfs/
 159     cp /tmp/net.$netif.resolv.conf /run/initramfs/state/etc/resolv.conf
 160     cp -a -t /run/initramfs/state/etc/sysconfig/network-scripts/ /tmp/ifcfg/*
 161     cp /tmp/ifcfg-leases/* /run/initramfs/state/var/lib/dhclient
 162 } > /dev/null 2>&1