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Text File  |  2009-09-19  |  2.3 KB  |  89 lines
  1. #!/bin/sh
  2.  
  3. ### BEGIN INIT INFO
  4. # Provides:             wpa-ifupdown
  5. # Required-Start:       $network
  6. # Required-Stop:        $network $remote_fs
  7. # Should-Start:
  8. # Should-Stop:
  9. # Default-Start:
  10. # Default-Stop:         0 6
  11. # Short-Description:    Stop wpa_supplicant processes started via ifupdown
  12. # Description:          Run ifdown on interfaces authenticated via
  13. #                       wpa_supplicant. Sendsigs terminates wpa_supplicant
  14. #                       processes before networking is stopped causing each
  15. #                       network interface authenticated via a wpa_supplicant
  16. #                       daemon to be terminated abrubtly.
  17. #                       Since initscripts package version 2.86.ds1-48 an
  18. #                       interface exists to omit process id's from sendsigs. If
  19. #                       this interface is present this script is a no-op.
  20. ### END INIT INFO
  21.  
  22. PATH=/usr/sbin:/usr/bin:/sbin:/bin
  23.  
  24. test -d /var/run || exit 0
  25.  
  26. test -x /sbin/ifdown || exit 0
  27.  
  28. . /lib/lsb/init-functions
  29.  
  30. stop_wpa_action () {
  31.     test -x /sbin/wpa_action || return 0
  32.     IFACES=$(find /var/run -maxdepth 1 -type f -name 'wpa_action.*.pid' -printf '%P\n' | \
  33.         cut -d'.' -f2 2>/dev/null)
  34.     if test -n "$IFACES"; then
  35.         log_daemon_msg "Stopping wpa_action roaming interfaces"
  36.         for iface in $IFACES; do
  37.             log_progress_msg "$iface"
  38.             # wpa_action executes /sbin/ifdown
  39.             wpa_action "$iface" stop >/dev/null 2>&1
  40.         done
  41.         log_end_msg 0
  42.     fi
  43. }
  44.  
  45. stop_wpa_supplicant () {
  46.     IFACES=$(find /var/run -maxdepth 1 -type f -name 'wpa_supplicant.*.pid' -printf '%P\n' | \
  47.         grep -v wpa_supplicant.dbus.pid | cut -d'.' -f2 2>/dev/null)
  48.     if test -n "$IFACES"; then
  49.         log_daemon_msg "Stopping wpa_supplicant interfaces"
  50.         for iface in $IFACES; do
  51.             log_progress_msg "$iface"
  52.             ifdown "$iface" >/dev/null 2>&1
  53.         done
  54.         log_end_msg 0
  55.     fi
  56. }
  57.  
  58. sendsigs_omission_support () {
  59.     if [ -d /lib/init/rw/sendsigs.omit.d/ ]; then
  60.         # Debian
  61.         return 0
  62.     elif [ -d /var/run/sendsigs.omit.d/ ]; then
  63.         # Ubuntu, cf. https://bugs.launchpad.net/bugs/181541
  64.         return 0
  65.     fi
  66.  
  67.     return 1
  68. }
  69.  
  70. case "$1" in
  71.     start|restart|force-reload)
  72.         # No-op
  73.         ;;
  74.     stop)
  75.         if sendsigs_omission_support; then
  76.             stop_wpa_action
  77.         else
  78.             stop_wpa_action
  79.             stop_wpa_supplicant
  80.         fi
  81.         ;;
  82.     *)
  83.         echo "Usage: $0 {start|stop|restart|force-reload}" >&2
  84.         exit 3
  85.         ;;
  86. esac
  87.  
  88. exit 0
  89.