[PATCH -mm] fault-injection: fix failcmd.sh warning

From: Akinobu Mita
Date: Fri Jul 27 2012 - 23:47:34 EST


fault-injection-add-tool-to-run-command-with-failslab-or-fail_page_alloc.patch
in -mm tree adds tools/testing/fault-injection/failcmd.sh to make it
easier to inject slab/page allocation failures by fault injection.

failcmd.sh prints the following warning when running with arguments
for command.

# ./failcmd.sh echo aaa
failcmd.sh: line 209: [: echo: binary operator expected
aaa

This warning is caused by an improper check whether at least one
parameter is left after parsing command options.

Fix it by testing the length of $1 instead of $@

Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
---
tools/testing/fault-injection/failcmd.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/fault-injection/failcmd.sh b/tools/testing/fault-injection/failcmd.sh
index 1776e92..78a9ed7 100755
--- a/tools/testing/fault-injection/failcmd.sh
+++ b/tools/testing/fault-injection/failcmd.sh
@@ -206,7 +206,7 @@ while true; do
esac
done

-[ -z "$@" ] && exit 0
+[ -z "$1" ] && exit 0

echo $oom_kill_allocating_task > /proc/sys/vm/oom_kill_allocating_task
echo $task_filter > $FAULTATTR/task-filter
--
1.7.10.4

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