tools/nfsd/inject_fault.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Copyright (c) 2011 Bryan Schumaker <bjschuma@netapp.com>
   5 #
   6 # Script for easier NFSD fault injection
   7
   8 # Check that debugfs has been mounted
   9 DEBUGFS=`cat /proc/mounts | grep debugfs`
  10 if [ "$DEBUGFS" == "" ]; then
  11         echo "debugfs does not appear to be mounted!"
  12         echo "Please mount debugfs and try again"
  13         exit 1
  14 fi
  15
  16 # Check that the fault injection directory exists
  17 DEBUGDIR=`echo $DEBUGFS | awk '{print $2}'`/nfsd
  18 if [ ! -d "$DEBUGDIR" ]; then
  19         echo "$DEBUGDIR does not exist"
  20         echo "Check that your .config selects CONFIG_NFSD_FAULT_INJECTION"
  21         exit 1
  22 fi
  23
  24 function help()
  25 {
  26         echo "Usage $0 injection_type [count]"
  27         echo ""
  28         echo "Injection types are:"
  29         ls $DEBUGDIR
  30         exit 1
  31 }
  32
  33 if [ $# == 0 ]; then
  34         help
  35 elif [ ! -f $DEBUGDIR/$1 ]; then
  36         help
  37 elif [ $# != 2 ]; then
  38         COUNT=0
  39 else
  40         COUNT=$2
  41 fi
  42
  43 BEFORE=`mktemp`
  44 AFTER=`mktemp`
  45 dmesg > $BEFORE
  46 echo $COUNT > $DEBUGDIR/$1
  47 dmesg > $AFTER
  48 # Capture lines that only exist in the $AFTER file
  49 diff $BEFORE $AFTER | grep ">"
  50 rm -f $BEFORE $AFTER