modules.d/40network/net-genrules.sh

   1 #!/bin/sh
   2
   3 # pxelinux provides macaddr '-' separated, but we need ':'
   4 fix_bootif() {
   5     local macaddr=${1}
   6     local IFS='-'
   7     macaddr=$(for i in ${macaddr} ; do echo -n $i:; done)
   8     macaddr=${macaddr%:}
   9     echo $macaddr
  10 }
  11
  12 # Don't continue if we don't need network
  13 [ -z "$netroot" ] && return;
  14
  15 # Write udev rules
  16 {
  17     # bridge: attempt only the defined interface
  18     if [ -e /tmp/bridge.info ]; then
  19         . /tmp/bridge.info
  20         IFACES=$ethname
  21     fi
  22
  23     # BOOTIF says everything, use only that one
  24     BOOTIF=$(getarg 'BOOTIF=')
  25     if [ -n "$BOOTIF" ] ; then
  26         BOOTIF=$(fix_bootif "$BOOTIF")
  27         printf 'ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="%s", RUN+="/sbin/ifup $env{INTERFACE}"\n' "$BOOTIF"
  28
  29     # If we have to handle multiple interfaces, handle only them.
  30     elif [ -n "$IFACES" ] ; then
  31         for iface in $IFACES ; do
  32             printf 'ACTION=="add", SUBSYSTEM=="net", KERNEL=="%s", RUN+="/sbin/ifup $env{INTERFACE}"\n' "$iface"
  33         done
  34
  35     # Default: We don't know the interface to use, handle all
  36     else
  37         printf 'ACTION=="add", SUBSYSTEM=="net", RUN+="/sbin/ifup $env{INTERFACE}"\n'
  38     fi
  39
  40     # Udev event 'online' only gets fired from ifup/dhclient-script.
  41     # No special rules required
  42     printf 'ACTION=="online", SUBSYSTEM=="net", RUN+="/sbin/netroot $env{INTERFACE}"\n'
  43 } > /etc/udev/rules.d/60-net.rules