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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2011 Bryan Schumaker <bjschuma@netapp.com>
#
# Script for easier NFSD fault injection
# Check that debugfs has been mounted
DEBUGFS=`cat /proc/mounts | grep debugfs`
if [ "$DEBUGFS" == "" ]; then
echo "debugfs does not appear to be mounted!"
echo "Please mount debugfs and try again"
exit 1
fi
# Check that the fault injection directory exists
DEBUGDIR=`echo $DEBUGFS | awk '{print $2}'`/nfsd
if [ ! -d "$DEBUGDIR" ]; then
echo "$DEBUGDIR does not exist"
echo "Check that your .config selects CONFIG_NFSD_FAULT_INJECTION"
exit 1
fi
function help()
{
echo "Usage $0 injection_type [count]"
echo ""
echo "Injection types are:"
ls $DEBUGDIR
exit 1
}
if [ $# == 0 ]; then
help
elif [ ! -f $DEBUGDIR/$1 ]; then
help
elif [ $# != 2 ]; then
COUNT=0
else
COUNT=$2
fi
BEFORE=`mktemp`
AFTER=`mktemp`
dmesg > $BEFORE
echo $COUNT > $DEBUGDIR/$1
dmesg > $AFTER
# Capture lines that only exist in the $AFTER file
diff $BEFORE $AFTER | grep ">"
rm -f $BEFORE $AFTER