X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=Documentation%2Ffault-injection%2Ffailmodule.sh;fp=Documentation%2Ffault-injection%2Ffailmodule.sh;h=474a8b971f9ca82ad722e4166e6d323cee368a36;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/Documentation/fault-injection/failmodule.sh b/Documentation/fault-injection/failmodule.sh
new file mode 100644
index 000000000..474a8b971
--- /dev/null
+++ b/Documentation/fault-injection/failmodule.sh
@@ -0,0 +1,31 @@
+#!/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