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

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Date:   Mon, 18 May 2020 11:33:34 -0700
From:   Matt Helsley <mhelsley@...are.com>
To:     Josh Poimboeuf <jpoimboe@...hat.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 Fri, May 15, 2020 at 02:52:53PM -0500, Josh Poimboeuf wrote:
> 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.

OK, removed the 'else'.

Cheers,
    -Matt Helsley