[linux.git] / tools / nfsd / inject_fault.sh

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2011 Bryan Schumaker <[email protected]>
#
# 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 $AFTER
Commit	Line	Data
800b927b	1	#!/bin/bash
b2441318	2	# SPDX-License-Identifier: GPL-2.0
800b927b BS	3	#
	4	# Copyright (c) 2011 Bryan Schumaker <[email protected]>
	5	#
	6	# Script for easier NFSD fault injection
	7
	8	# Check that debugfs has been mounted
	9	DEBUGFS=`cat /proc/mounts \| grep debugfs`
	10	if [ "$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