netdev - Re: [PATCH iproute2-next v2 03/11] lib: utils: Add print_on_off

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Date:   Sat, 31 Oct 2020 09:38:57 -0600
From:   David Ahern <dsahern@...il.com>
To:     Petr Machata <me@...chata.org>, netdev@...r.kernel.org,
        stephen@...workplumber.org
Cc:     john.fastabend@...il.com, jiri@...dia.com, idosch@...dia.com,
        Jakub Kicinski <kuba@...nel.org>,
        Roman Mashak <mrv@...atatu.com>
Subject: Re: [PATCH iproute2-next v2 03/11] lib: utils: Add
 print_on_off_bool()

On 10/30/20 6:29 AM, Petr Machata wrote:
> diff --git a/include/utils.h b/include/utils.h
> index bd62cdcd7122..e3cdb098834a 100644
> --- a/include/utils.h
> +++ b/include/utils.h
> @@ -328,5 +328,6 @@ int do_batch(const char *name, bool force,
>  int parse_one_of(const char *msg, const char *realval, const char * const *list,
>  		 size_t len, int *p_err);
>  int parse_on_off(const char *msg, const char *realval, int *p_err);
> +void print_on_off_bool(FILE *fp, const char *flag, bool val);
>  
>  #endif /* __UTILS_H__ */
> diff --git a/lib/utils.c b/lib/utils.c
> index 930877ae0f0d..8deec86ecbcd 100644
> --- a/lib/utils.c
> +++ b/lib/utils.c
> @@ -1763,3 +1763,11 @@ int parse_on_off(const char *msg, const char *realval, int *p_err)
>  
>  	return parse_one_of(msg, realval, values_on_off, ARRAY_SIZE(values_on_off), p_err);
>  }
> +
> +void print_on_off_bool(FILE *fp, const char *flag, bool val)
> +{
> +	if (is_json_context())
> +		print_bool(PRINT_JSON, flag, NULL, val);
> +	else
> +		fprintf(fp, "%s %s ", flag, val ? "on" : "off");
> +}
> 

I think print_on_off should be fine and aligns with parse_on_off once it
returns a bool.