linux-kernel - Re: [PATCH v2] coccicheck: return proper error code on fail

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Date:   Fri, 10 Aug 2018 22:31:41 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Denis Efremov <efremov@...ux.com>
cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: Re: [PATCH v2] coccicheck: return proper error code on fail



On Fri, 10 Aug 2018, efremov@...ux.com wrote:

> From: Denis Efremov <efremov@...ux.com>
>
> If coccicheck fails, it should return an error code distinct from zero
> to signal about an internal problem. Current code instead of exiting with
> the tool's error code returns the error code of 'echo "coccicheck failed"'
> which is almost always equals to zero, thus failing the original intention
> of alerting about a problem. This patch fixes the code.
>
> Found by Linux Driver Verification project (linuxtesting.org).
>
> Signed-off-by: Denis Efremov <efremov@...ux.com>

OK, I get it now.  Thanks.

Acked-by: Julia Lawall <julia.lawall@...6.fr>

> ---
>  scripts/coccicheck | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/coccicheck b/scripts/coccicheck
> index 9fedca611b7f..e04d328210ac 100755
> --- a/scripts/coccicheck
> +++ b/scripts/coccicheck
> @@ -128,9 +128,10 @@ run_cmd_parmap() {
>  	fi
>  	echo $@ >>$DEBUG_FILE
>  	$@ 2>>$DEBUG_FILE
> -	if [[ $? -ne 0 ]]; then
> +	err=$?
> +	if [[ $err -ne 0 ]]; then
>  		echo "coccicheck failed"
> -		exit $?
> +		exit $err
>  	fi
>  }
>
> --
> 2.17.1
>
>