obsolete-buildroot/sources/openwrt/root/etc/functions.sh

   1 #!/bin/ash
   2
   3 alias debug=${DEBUG:-:}
   4
   5 # allow env to override nvram
   6 nvram () {
   7   case $1 in
   8     get) eval "echo \${NVRAM_$2:-\$(command nvram get $2)}";;
   9     *) command nvram $*;;
  10   esac
  11 }
  12 . /etc/nvram.overrides
  13
  14 # valid interface?
  15 if_valid () (
  16   [ "${1%%[0-9]}" = "vlan" ] && {
  17     i=${1#vlan}
  18     hwname=$(nvram get vlan${i}hwname)
  19     hwaddr=$(nvram get ${hwname}macaddr)
  20     [ -z "$hwaddr" ] && return 1
  21
  22     vif=$(ifconfig -a | awk '/^eth.*'$hwaddr'/ {print $1; exit}' IGNORECASE=1)
  23     debug "# vlan$i: $hwname $hwaddr => $vif"
  24
  25     $DEBUG ifconfig $vif up
  26     $DEBUG vconfig add $vif $i 2>/dev/null
  27   }
  28   ifconfig "$1" >/dev/null 2>&1 || [ "${1%%[0-9]}" = "br" ]
  29   [ $? = 0 ] || { echo -e "# $1 ignored: no such interface"; return 1; }
  30 )