linux-kernel - Re: [RFC][PATCH 1/5] objtool: Exit successfully when requesting help

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Date:   Fri, 15 May 2020 14:52:53 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Matt Helsley <mhelsley@...are.com>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Julien Thierry <jthierry@...hat.com>,
        Miroslav Benes <mbenes@...e.cz>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC][PATCH 1/5] objtool: Exit successfully when requesting help

On Mon, May 11, 2020 at 10:35:09AM -0700, Matt Helsley wrote:
> When the user requests help it's not an error so do not exit with
> a non-zero exit code. This is not especially useful for a user but
> any script that might wish to check that objtool --help is at least
> available can't rely on the exit code to crudely check that, for
> example building an objtool executable succeeds.
> 
> Signed-off-by: Matt Helsley <mhelsley@...are.com>
> ---
>  tools/objtool/objtool.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/objtool/objtool.c b/tools/objtool/objtool.c
> index 0b3528f05053..593ec85915a9 100644
> --- a/tools/objtool/objtool.c
> +++ b/tools/objtool/objtool.c
> @@ -58,7 +58,10 @@ static void cmd_usage(void)
>  
>  	printf("\n");
>  
> -	exit(129);
> +	if (!help)
> +		exit(129);
> +	else
> +		exit(0);

Looks fine, though the 'else' isn't needed.

-- 
Josh