scripts/madwifi-unload

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