scripts/madwifi-unload

   1 #!/bin/sh
   2 # Copyright 2006        Kel Modderman <kelrin@tpg.com.au>
   3 #
   4 # Taken from madwifi scripts. This unloads madwifi
   5
   6 : ${PATTERN='\(ath_.*\|wlan_.*\|wlan\)$'}
   7 : ${MAX_TRIES=10}
   8
   9 test "`id -u`" = 0 || {
  10         echo "ERROR: You must be root to run this script" >&2
  11         exit 1
  12 }
  13
  14 test -r /proc/modules || {
  15         echo "ERROR: Cannot read /proc/modules" >&2
  16         exit 1
  17 }
  18
  19 tries="$MAX_TRIES"
  20 while test "$tries" != "0"; do
  21         skipped=0
  22         IFS='
  23 '
  24         for line in `cat /proc/modules`; do
  25                 IFS='   '
  26                 set x $line
  27                 name="$2"
  28                 size="$3"
  29                 use_count="$4"
  30                 use_name="$5"
  31                 state="$6"
  32                 expr "$name" : "$PATTERN" >/dev/null || continue
  33
  34                 # Compatibility for Linux 2.4.x
  35                 test -z "$state" && { use_name="-"; state="Live"; }
  36
  37                 if test "$state" != "Live" || test "$use_count" != "0" || \
  38                    test "$use_name" != "-"; then
  39                         # Don't skip unload in the last run
  40                         if test "$tries" != "1"; then
  41                                 skipped=1
  42                                 continue
  43                         fi
  44                 fi
  45
  46                 echo "Unloading \"$name\""
  47                 sync    # to be safe
  48                 /sbin/rmmod "$name" || {
  49                         echo "ERROR: cannot unload module \"$name\"" >&2
  50                         exit 1
  51                 }
  52                 sync    # to be even safer
  53         done
  54         test "$skipped" = "0" && break
  55         tries=$(($tries - 1))
  56 done
  57
  58 exit 0