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