[LTP] [PATCH v2] testcases:Fix the failure of shell script to get path

[Petr Vorel]

Hi Hao,

> For example:
> in the file testcases/kernel/controllers/cpuset/cpuset_funcs.sh,
> if the path is obtained by
> find "$CPUSET" -type d | sort | sed -n '2,$p' | tac | while read subdir,
> the escaped characters will be lost,and by adding the -r option,
> the escaped characters will be kept as they are without escaping
> The errors are as follows:
> /opt/ltp/testcases/bin/cpuset_funcs.sh:line178:
> /dev/cpuset/machine.slice/machine-qemux2d157x2dzhx2dsxf.scope/vcpu7/tasks:
> The file or directory is not available
> rmdir: delete
> '/dev/cpuset/machine.slice/machine-qemux2d157x2dzhx2dsxf.scope/vcpu7'
> Failure: The file or directory is not available
> cpuset_memory_pressure 1 TFAIL: Couldn't remove subdir -
> /opt/ltp/testcases/bin/cpuset_funcs.sh:line178:
> /dev/cpuset/machine.slice/machine-qemux2d157x2dzhx2dsxf.scope/vcpu7/tasks:
> The file or directory is not available
> rmdir: delete
> '/dev/cpuset/machine.slice/machine-qemux2d157x2dzhx2dsxf.scope/vcpu7'
> Failure: The file or directory is not available
> cpuset_memory_pressure 1 TFAIL: Couldn't remove subdir -

> Signed-off-by: Hao Zeng <zenghao@kylinos.cn>
> Suggested-by: Petr Vorel <pvorel@suse.cz>
> ---
>  testcases/kernel/controllers/cpuset/cpuset_funcs.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

> diff --git a/testcases/kernel/controllers/cpuset/cpuset_funcs.sh b/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
> index 87ba7da1f..0cfa0c17e 100755
> --- a/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
> +++ b/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
> @@ -184,7 +184,7 @@ cleanup()
>  	echo $CHILDREN_VALUE > $CLONE_CHILDREN
>  	echo $SCHED_LB_VALUE > $SCHED_LB

> -	find "$CPUSET" -type d | sort | sed -n '2,$p' | tac | while read subdir
> +	find "$CPUSET" -type d | sort | sed -n '2,$p' | tac | while read -r subdir

Is it testcases/kernel/controllers/cpuctl_fj/run_cpuctl_test_fj.sh working
without -r ? I'd expect it'd be also needed (it was in your v1 patch [1]).

I only didn't want to take
testcases/open_posix_testsuite/scripts/generate-makefiles.sh because it does not
work with /dev/cpuset/.

Kind regards,
Petr

[1] https://lore.kernel.org/ltp/6b2a7ceb.4466.1874a537430.Coremail.crawler2015@163.com/
>  	do
>  		while read pid
>  		do