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=$uuid"
  41         if [ -f /tmp/net.$netif.lease ]; then
  42             strstr "$ip" '*:*:*' &&
  43             echo "DHCPV6C=yes"
  44             echo "BOOTPROTO=dhcp"
  45             cp /tmp/net.$netif.lease /tmp/ifcfg-leases/dhclient-$uuid-$netif.lease
  46         else
  47             echo "BOOTPROTO=none"
  48         # If we've booted with static ip= lines, the override file is there
  49             [ -e /tmp/net.$netif.override ] && . /tmp/net.$netif.override
  50             echo "IPADDR=$ip"
  51             echo "NETMASK=$mask"
  52             [ -n "$gw" ] && echo "GATEWAY=$gw"
  53         fi
  54     } > /tmp/ifcfg/ifcfg-$netif
  55
  56     # bridge needs different things written to ifcfg
  57     if [ -z "$bridge" ] && [ -z "$bond" ]; then
  58         # standard interface
  59         {
  60             echo "HWADDR=$(cat /sys/class/net/$netif/address)"
  61             echo "TYPE=Ethernet"
  62             echo "NAME=\"Boot Disk\""
  63         } >> /tmp/ifcfg/ifcfg-$netif
  64     fi
  65
  66     if [ -n "$bond" ] ; then
  67         # bond interface
  68         {
  69             # This variable is an indicator of a bond interface for initscripts
  70             echo "BONDING_OPTS=\"$bondoptions\""
  71             echo "NAME=\"Boot Disk\""
  72         } >> /tmp/ifcfg/ifcfg-$netif
  73
  74         for slave in $bondslaves ; do
  75             # Set ONBOOT=no to prevent initscripts from trying to setup already bonded physical interface
  76             # write separate ifcfg file for the raw eth interface
  77             {
  78                 echo "# Generated by dracut initrd"
  79                 echo "DEVICE=$slave"
  80                 echo "TYPE=Ethernet"
  81                 echo "ONBOOT=no"
  82                 echo "NETBOOT=yes"
  83                 echo "HWADDR=$(cat /sys/class/net/$slave/address)"
  84                 echo "SLAVE=yes"
  85                 echo "MASTER=$netif"
  86                 echo "NAME=$slave"
  87             } >> /tmp/ifcfg/ifcfg-$slave
  88         done
  89     fi
  90
  91     if [ -n "$bridge" ] ; then
  92         # bridge
  93         {
  94             echo "TYPE=Bridge"
  95             echo "NAME=\"Boot Disk\""
  96         } >> /tmp/ifcfg/ifcfg-$netif
  97         if [ "$ethname" = "$bondname" ] ; then
  98             {
  99                 # Set ONBOOT=no to prevent initscripts from trying to setup already bridged bond interface
 100                 echo "# Generated by dracut initrd"
 101                 echo "DEVICE=$bondname"
 102                 echo "ONBOOT=no"
 103                 echo "NETBOOT=yes"
 104                 # This variable is an indicator of a bond interface for initscripts
 105                 echo "BONDING_OPTS=\"$bondoptions\""
 106                 echo "BRIDGE=$netif"
 107                 echo "NAME=\"$bondname\""
 108             } >> /tmp/ifcfg/ifcfg-$bondname
 109             for slave in $bondslaves ; do
 110                 # write separate ifcfg file for the raw eth interface
 111                 # Set ONBOOT=no to prevent initscripts from trying to setup already bridged physical interface
 112                 {
 113                     echo "# Generated by dracut initrd"
 114                     echo "DEVICE=$slave"
 115                     echo "TYPE=Ethernet"
 116                     echo "ONBOOT=no"
 117                     echo "NETBOOT=yes"
 118                     echo "HWADDR=$(cat /sys/class/net/$slave/address)"
 119                     echo "SLAVE=yes"
 120                     echo "MASTER=$bondname"
 121                     echo "NAME=$slave"
 122                 } >> /tmp/ifcfg/ifcfg-$slave
 123             done
 124         else
 125             # write separate ifcfg file for the raw eth interface
 126             {
 127                 echo "# Generated by dracut initrd"
 128                 echo "DEVICE=$ethname"
 129                 echo "TYPE=Ethernet"
 130                 echo "ONBOOT=no"
 131                 echo "NETBOOT=yes"
 132                 echo "HWADDR=$(cat /sys/class/net/$ethname/address)"
 133                 echo "BRIDGE=$netif"
 134                 echo "NAME=$ethname"
 135             } >> /tmp/ifcfg/ifcfg-$ethname
 136         fi
 137     fi
 138 done
 139
 140 # Pass network opts
 141 mkdir -m 0755 -p /run/initramfs/state/etc/sysconfig/network-scripts
 142 mkdir -m 0755 -p /run/initramfs/state/var/lib/dhclient
 143 echo "files /etc/sysconfig/network-scripts" >> /run/initramfs/rwtab
 144 echo "files /var/lib/dhclient" >> /run/initramfs/rwtab
 145 {
 146     cp /tmp/net.* /run/initramfs/
 147     cp /tmp/net.$netif.resolv.conf /run/initramfs/state/etc/
 148     cp -a -t /run/initramfs/state/etc/sysconfig/network-scripts/ /tmp/ifcfg/*
 149     cp /tmp/ifcfg-leases/* /run/initramfs/state/var/lib/dhclient
 150 } > /dev/null 2>&1