src/dhclient-helper

   1 #!/bin/bash
   2
   3 . /usr/lib/network/functions
   4
   5 action="${1}"
   6 assert isset action
   7
   8 interface="${2}"
   9 assert isset interface
  10
  11 proto=${3}
  12 assert isset proto
  13
  14 # Check if the given interface is a zone.
  15 assert zone_exists ${interface}
  16
  17 case "${action}" in
  18         start)
  19                 leases_file=""
  20
  21                 # Create dhclient configuration file.
  22                 case "${proto}" in
  23                         ipv4)
  24                                 config_file="${RUN_DIR}/dhclient/${interface}/dhclient4.conf"
  25                                 ;;
  26                         ipv6)
  27                                 config_file="${RUN_DIR}/dhclient/${interface}/dhclient6.conf"
  28                                 leases_file="/var/lib/dhclient/dhclient6-${interface}.leases"
  29                                 ;;
  30                 esac
  31                 assert isset config_file
  32
  33                 # Update the dhclient configuration files
  34                 dhclient_write_config "${interface}" \
  35                         --config-file="${config_file}" \
  36                         --leases-file="${leases_file}" || exit $?
  37
  38                 exit ${EXIT_OK}
  39                 ;;
  40
  41         stop)
  42                 case "${proto}" in
  43                         ipv4)
  44                                 reason="STOP"
  45                                 ;;
  46                         ipv6)
  47                                 reason="STOP6"
  48                                 ;;
  49                 esac
  50                 assert isset reason
  51
  52                 export interface
  53                 export reason
  54
  55                 exec /usr/sbin/dhclient-script
  56
  57                 log ERROR $"execing dhclient-script has failed."
  58                 exit ${EXIT_ERROR}
  59                 ;;
  60
  61         *)
  62                 log ERROR "Unknown action passed: ${action}"
  63                 exit ${EXIT_ERROR}
  64                 ;;
  65 esac