Root/tools/nfsd/inject_fault.sh

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

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