Re: [PATCH v2] sign-file: Fix confusing error messages

[Tianjia Zhang]

ping.

On 6/24/21 6:48 PM, Tianjia Zhang wrote:
> When an error occurs, use errx() instead of err() to display the
> error message, because openssl has its own error record. When an
> error occurs, errno will not be changed, while err() displays the
> errno error message. It will cause confusion. For example, when
> CMS_add1_signer() fails, the following message will appear:
>
>    sign-file: CMS_add1_signer: Success
>
> errx() ignores errno and does not cause such issue.
>
> Signed-off-by: Tianjia Zhang <tianjia.zhang@xxxxxxxxxxxxxxxxx>
> ---
>   scripts/sign-file.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/sign-file.c b/scripts/sign-file.c
> index fbd34b8e8f57..37d8760cb0d1 100644
> --- a/scripts/sign-file.c
> +++ b/scripts/sign-file.c
> @@ -107,7 +107,7 @@ static void drain_openssl_errors(void)
>   		bool __cond = (cond);			\
>   		display_openssl_errors(__LINE__);	\
>   		if (__cond) {				\
> -			err(1, fmt, ## __VA_ARGS__);	\
> +			errx(1, fmt, ## __VA_ARGS__);	\
>   		}					\
>   	} while(0)
>