[CRIU] [PATCH 2/6] zdtm: Replace `ps -p` with `kill -0`

[Andrew Vagin]

On Wed, Aug 06, 2014 at 06:02:10PM -0400, Christopher Covington wrote:
> The -p argument to `ps` is not supported by Busybox v1.19.4. Sending
> signal 0 with the `kill` command is an alternative way to check
> whether a process is still running.
> 
> http://www.linuxjournal.com/content/monitoring-processes-kill-0

Acked-by: Andrew Vagin <avagin at parallels.com>
> 
> Signed-off-by: Christopher Covington <cov at codeaurora.org>
> ---
>  test/zdtm.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/test/zdtm.sh b/test/zdtm.sh
> index 19f74da..55e333a 100755
> --- a/test/zdtm.sh
> +++ b/test/zdtm.sh
> @@ -403,7 +403,7 @@ start_test()
>  	[ -z "$PIDNS" ] || cd -
>  
>  	PID=`cat "$TPID"` || return 1
> -	if ! ps -p $PID ; then
> +	if ! kill -0 $PID ; then
>  		echo "Test failed to start"
>  		return 1
>  	fi
> -- 
> Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> hosted by the Linux Foundation.
>