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 . /usr/lib/network/functions
  23
  24 # Read network settings
  25 network_settings_read
  26
  27 # Setup logging.
  28 LOG_FACILITY="network-hotplug"
  29
  30 log DEBUG "Called with ACTION='${ACTION}', INTERFACE='${INTERFACE}'."
  31
  32 # Check if the udev environment variables are properly set.
  33 assert isset ACTION
  34 assert isset INTERFACE
  35
  36 # Check, if the device is a physical network interface and
  37 # if we can handle it.
  38 if device_exists ${INTERFACE}; then
  39         if ! device_is_ethernet ${INTERFACE}; then
  40                 log DEBUG "Called for interface '${INTERFACE}' which is a virtual interface. Exiting."
  41                 exit ${EXIT_OK}
  42         fi
  43 fi
  44
  45 case "${ACTION}" in
  46         add|register)
  47                 # Check, if there is a configuration for that device.
  48                 if port_exists ${INTERFACE}; then
  49                         port=${INTERFACE}
  50
  51                 # Create new configuration for _real_ network devices.
  52                 else
  53                         type=$(device_get_type ${INTERFACE})
  54                         case "${type}" in
  55                                 # If the given device was not configured,
  56                                 # we create an initial configuration.
  57                                 ethernet|real)
  58                                         port_create ethernet ${INTERFACE}
  59                                         ;;
  60
  61                                 # Handle batman-adv and wireless devices.
  62                                 batman-adv|batman-adv-port|wireless)
  63                                         # Load regulatory domain for wireless devices
  64                                         wireless_init_reg_domain
  65
  66                                         # Save the phy of this device for later.
  67                                         phy=$(phy_get ${INTERFACE})
  68                                         assert isset phy
  69
  70                                         # Remove the unconfigured wireless device.
  71                                         wireless_remove ${INTERFACE}
  72
  73                                         # Create configured child devices.
  74                                         for port in $(ports_get_all); do
  75                                                 port_cmd hotplug "${port}" "${phy}"
  76                                                 ret=$?
  77
  78                                                 case "${ret}" in
  79                                                         ${EXIT_OK})
  80                                                                 log DEBUG "phy '${phy}' was handled by port '${port}'"
  81                                                                 break
  82                                                                 ;;
  83                                                         ${EXIT_NOT_HANDLED})
  84                                                                 log DEBUG "phy '${phy}' was not handled by port '${port}'"
  85                                                                 ;;
  86                                                         *)
  87                                                                 log WARNING "Unknown exit code for port '${port}': ${ret}"
  88                                                                 ;;
  89                                                 esac
  90                                         done
  91                                         ;;
  92
  93                                 # Do nothing for all the rest.
  94                                 *)
  95                                         log DEBUG "Don't create a port configuration for device '${INTERFACE}' of type '${type}'."
  96                                         ;;
  97                         esac
  98                         exit ${EXIT_OK}
  99                 fi
 100
 101                 zone=$(port_zone ${port})
 102
 103                 # Check, if the device is configured in a zone.
 104                 # If not, there is nothing to do.
 105                 isset zone || exit ${EXIT_OK}
 106
 107                 # If the zone is already up or enabled for auto-start,
 108                 # we add the device to the zone.
 109                 if zone_is_up "${zone}" || zone_is_enabled "${zone}"; then
 110                         zone_up "${zone}"
 111                 fi
 112                 ;;
 113
 114         remove|unregister)
 115                 # After the interface has been removed/unplugged,
 116                 # there are often daemons (like hostapd) which need
 117                 # to be stopped.
 118                 port_exists ${INTERFACE} && port_down ${INTERFACE}
 119                 ;;
 120 esac
 121
 122 exit ${EXIT_OK}