src/udev/network-hotplug

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2011  Michael Tremer & Christian Schmidt                      #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 IN_HOTPLUG_EVENT=1
  23
  24 # Setup logging.
  25 LOG_FACILITY="network-hotplug"
  26
  27 . /usr/lib/network/functions
  28
  29 # Read network settings
  30 network_settings_read
  31
  32 log DEBUG "Called with SUBSYSTEM='${SUBSYSTEM}', ACTION='${ACTION}', INTERFACE='${INTERFACE}', DEVPATH='${DEVPATH}'"
  33
  34 # Check if the udev environment variables are properly set.
  35 assert isset ACTION
  36
  37 case "${SUBSYSTEM}" in
  38         ieee80211)
  39                 PHY="$(basename "${DEVPATH}")"
  40
  41                 # Check if the PHY exists
  42                 if ! phy_exists "${PHY}"; then
  43                         exit ${EXIT_OK}
  44                 fi
  45
  46                 case "${ACTION}" in
  47                         add)
  48                                 # Load regulatory domain for wireless devices
  49                                 wireless_init_reg_domain
  50
  51                                 # Configure LEDs
  52                                 phy_leds_autoconf "${PHY}"
  53                                 ;;
  54                 esac
  55
  56                 # Propagate the hotplug event to all configured port hooks
  57                 hotplug_propagate_all_ports || exit ${EXIT_ERROR}
  58
  59                 # Everything went fine
  60                 exit ${EXIT_OK}
  61                 ;;
  62
  63         net)
  64                 assert isset INTERFACE
  65
  66                 # Stop processing rules for the loopback device
  67                 if device_is_loopback ${INTERFACE}; then
  68                         exit ${EXIT_OK}
  69
  70                 # Skip all pppN interfaces (for pppoe-server)
  71                 elif device_is_ppp "${INTERFACE}" && [[ ${INTERFACE} =~ ^ppp[0-9]+$ ]]; then
  72                         log DEBUG "Ignoring PPP device"
  73                         exit ${EXIT_OK}
  74
  75                 # Stop processing rules for wireless monitoring devices
  76                 elif device_is_wireless_monitor ${INTERFACE}; then
  77                         exit ${EXIT_OK}
  78                 fi
  79
  80                 # Did we get called for a non-existing interface?
  81                 if ! zone_exists "${INTERFACE}" && ! port_exists "${INTERFACE}"; then
  82                         case "${ACTION}" in
  83                                 add)
  84                                         # Ignore this for some special devices
  85                                         case "${INTERFACE}" in
  86                                                 gre0|ip6gre0|ip6tnl0|ip6_vti0|ip_vti0)
  87                                                         log DEBUG "Ignoring special device ${INTERFACE}"
  88                                                         exit ${EXIT_OK}
  89                                                         ;;
  90                                         esac
  91
  92                                         log WARNING "Got to hotplug event for a port which does not exist: ${INTERFACE}"
  93
  94                                         # Try to remove the device again
  95
  96                                         # Bonding
  97                                         if device_is_bonding "${INTERFACE}"; then
  98                                                 bonding_remove "${INTERFACE}"
  99
 100                                         # Dummy
 101                                         elif device_is_dummy "${INTERFACE}"; then
 102                                                 dummy_remove "${INTERFACE}"
 103
 104                                         # Wireless
 105                                         elif device_is_wireless "${INTERFACE}"; then
 106                                                 wireless_remove "${INTERFACE}"
 107
 108                                         # Everything else
 109                                         else
 110                                                 device_delete "${INTERFACE}"
 111                                         fi
 112
 113                                         # Check if the device still exists and if so, log an error
 114                                         if device_exists "${INTERFACE}"; then
 115                                                 log ERROR "Could not delete ${INTERFACE}"
 116                                                 exit ${EXIT_ERROR}
 117                                         fi
 118
 119                                         exit ${EXIT_OK}
 120                                         ;;
 121
 122                                 remove)
 123                                         # Don't propagate removal events for ports that don't exist
 124                                         exit ${EXIT_OK}
 125                                         ;;
 126                         esac
 127                 fi
 128
 129                 # Propagate the hotplug event to all configured port hooks
 130                 hotplug_propagate_all_ports || exit ${EXIT_ERROR}
 131
 132                 # Propagate the hotplug event to all configured zones
 133                 hotplug_propagate_all_zones || exit ${EXIT_ERROR}
 134
 135                 exit ${EXIT_OK}
 136                 ;;
 137
 138         *)
 139                 log ERROR "Called for an unsupported subsystem: ${SUBSYSTEM}"
 140                 exit ${EXIT_ERROR}
 141                 ;;
 142 esac
 143
 144 exit ${EXIT_NOT_HANDLED}