lttctl/ltt-disarmall.sh

   1 #!/bin/bash
   2 # Copyright (C) 2009 Benjamin Poirier
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License along
  15 # with this program; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 DEBUGFSROOT=$(grep ^debugfs /proc/mounts | head -1 | awk '{print $2}')
  19 MARKERSROOT=${DEBUGFSROOT}/ltt/markers
  20
  21 usage () {
  22         echo "Usage: $0 [OPTION]..." > /dev/stderr
  23         echo "Disconnect lttng markers" > /dev/stderr
  24         echo "" > /dev/stderr
  25         echo "Options:" > /dev/stderr
  26         printf "\t-q           Quiet mode, suppress output\n" > /dev/stderr
  27         printf "\t-h           Print this help\n" > /dev/stderr
  28         echo "" > /dev/stderr
  29 }
  30
  31 if [ ! "$DEBUGFSROOT" ]; then
  32         echo "Error: debugfs not mounted" > /dev/stderr
  33         exit 1;
  34 fi
  35
  36 if [ ! -d "$MARKERSROOT" ]; then
  37         echo "Error: LTT trace controller not found (did you compile and load LTTng?)" > /dev/stderr
  38         exit 1;
  39 fi
  40
  41 while getopts "qh" options; do
  42         case $options in
  43                 q) QUIET="0";;
  44                 h) usage;
  45                         exit 0;;
  46                 \?) usage;
  47                         exit 1;;
  48         esac
  49 done
  50 shift $(($OPTIND - 1))
  51
  52 while read -r -d $'\0' marker; do
  53         grep "^1$" "$marker" -q
  54         if [ $? -ne 0 ]; then
  55                 continue
  56         fi
  57         if [ ! $QUIET ]; then
  58                 echo "Disconnecting ${marker%/enable}"
  59         fi
  60         echo 0 > $marker
  61 done < <(eval "find '$MARKERSROOT' -name metadata -prune -o -name enable -print0")