modules.d/40network/parse-vlan.sh

   1 #!/bin/sh
   2 #
   3 # Format:
   4 #       vlan=<vlanname>:<phydevice>
   5 #
   6
   7 # return if vlan already parsed
   8 [ -n "$vlanname" ] && return
   9
  10 # Check if vlan parameter is valid
  11 if getarg vlan= >/dev/null ; then
  12     :
  13 fi
  14
  15 parsevlan() {
  16     local v=${1}:
  17     set --
  18     while [ -n "$v" ]; do
  19         set -- "$@" "${v%%:*}"
  20         v=${v#*:}
  21     done
  22
  23     unset vlanname phydevice
  24     case $# in
  25     2)  vlanname=$1; phydevice=$2 ;;
  26     *)  die "vlan= requires two parameters" ;;
  27     esac
  28 }
  29
  30 unset vlanname phydevice
  31
  32 if getarg vlan >/dev/null; then
  33     # Read vlan= parameters if they exist
  34     vlan="$(getarg vlan=)"
  35     if [ ! "$vlan" = "vlan" ]; then
  36         parsevlan "$(getarg vlan=)"
  37     fi
  38
  39     echo "$phydevice" > /tmp/vlan.${phydevice}.phy
  40     echo "$vlanname" > /tmp/vlan.${vlanname}.${phydevice}
  41     return
  42 fi