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fault-injection: fix failcmd.sh warning

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"fault-injection: add tool to run command with failslab or
fail_page_alloc" added 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@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2012-07-31 16:41:31 -07:00 committed by Linus Torvalds
parent 2e3ee61348
commit d6b09e754c
1 changed files with 1 additions and 1 deletions
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2
tools/testing/fault-injection/failcmd.sh
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@ -206,7 +206,7 @@ while true; do
esac esac
done done
[ -z "$@" ] && exit 0 [ -z "$1" ] && exit 0
echo $oom_kill_allocating_task > /proc/sys/vm/oom_kill_allocating_task echo $oom_kill_allocating_task > /proc/sys/vm/oom_kill_allocating_task
echo $task_filter > $FAULTATTR/task-filter echo $task_filter > $FAULTATTR/task-filter