lttctl/ltt-disarmall.sh

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