linux/Documentation/fault-injection/failmodule.sh
Don Mullis 5d0ffa2b84 [PATCH] fault-injection: Correct, disambiguate, and reformat documentation
Correct, disambiguate, and reformat documentation.

Signed-off-by: Don Mullis <dwm@meer.net>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:29:03 -08:00

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#!/bin/bash
#
# Usage: failmodule <failname> <modulename> [stacktrace-depth]
#
# <failname>: "failslab", "fail_alloc_page", or "fail_make_request"
#
# <modulename>: module name that you want to inject faults.
#
# [stacktrace-depth]: the maximum number of stacktrace walking allowed
#
STACKTRACE_DEPTH=5
if [ $# -gt 2 ]; then
STACKTRACE_DEPTH=$3
fi
if [ ! -d /debug/$1 ]; then
echo "Fault-injection $1 does not exist" >&2
exit 1
fi
if [ ! -d /sys/module/$2 ]; then
echo "Module $2 does not exist" >&2
exit 1
fi
# Disable any fault injection
echo 0 > /debug/$1/stacktrace-depth
echo `cat /sys/module/$2/sections/.text` > /debug/$1/require-start
echo `cat /sys/module/$2/sections/.exit.text` > /debug/$1/require-end
echo $STACKTRACE_DEPTH > /debug/$1/stacktrace-depth