net/isc-dhcp/files/dhcrelay4.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2012 OpenWrt.org
   3
   4 START=91
   5
   6 SERVICE_SIG="KILL"
   7 SERVICE_PID_FILE="/var/run/dhcrelay4.pid"
   8 SERVICE_USE_PID=1
   9
  10 start() {
  11         . /lib/functions/network.sh
  12         config_load dhcrelay
  13         local args=""
  14
  15         local enabled
  16         config_get_bool enabled ipv4 enabled 0
  17         [ "$enabled" -eq 0 ] && return 0
  18
  19         # listen interfaces
  20         local interfaces
  21         local ifname
  22         config_get interfaces ipv4 interfaces
  23         for net in $interfaces; do
  24                 if network_get_device ifname "$net"; then
  25                         append args "-i $ifname"
  26                 fi
  27         done
  28
  29         # link selection sub-option (RFC3527)
  30         local link_selection
  31         config_get link_selection ipv4 link_selection
  32         if network_get_device ifname "$link_selection"; then
  33                 append args "-l $ifname"
  34         fi
  35
  36         # relay mode
  37         local relay_mode
  38         config_get relay_mode ipv4 relay_mode
  39         [ -n "$relay_mode" ] && append args "-m $relay_mode"
  40
  41         # dhcp server address
  42         local server
  43         config_get server ipv4 dhcpserver
  44         [ -n "$server" ] || return 0
  45         append args "$server"
  46
  47         service_start /usr/sbin/dhcrelay -4 -q \
  48                 -pf $SERVICE_PID_FILE $args
  49 }
  50
  51 stop() {
  52         service_stop /usr/sbin/dhcrelay
  53 }