linux-kernel - Re: [PATCH 1/3] Add a kstrtobool function matching semantics of existing in kernel equivalents.

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Message-ID: <20110323135435.GE17108@twin.jikos.cz>
Date:	Wed, 23 Mar 2011 14:54:35 +0100
From:	David Sterba <dave@...os.cz>
To:	Jonathan Cameron <jic23@....ac.uk>
Cc:	linux-kernel@...r.kernel.org, greg@...ah.com,
	rusty@...tcorp.com.au, adobriyan@...il.com
Subject: Re: [PATCH 1/3] Add a kstrtobool function matching semantics of
 existing in kernel equivalents.

Hi,

you've missed a few breaks :)

On Wed, Mar 23, 2011 at 01:39:12PM +0000, Jonathan Cameron wrote:
> Signed-off-by: Jonathan Cameron <jic23@....ac.uk>
> ---
>  include/linux/kernel.h |    1 +
>  lib/kstrtox.c          |   18 ++++++++++++++++++
>  2 files changed, 19 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index 00cec4d..0babad3 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -247,6 +247,7 @@ int __must_check kstrtou16(const char *s, unsigned int base, u16 *res);
>  int __must_check kstrtos16(const char *s, unsigned int base, s16 *res);
>  int __must_check kstrtou8(const char *s, unsigned int base, u8 *res);
>  int __must_check kstrtos8(const char *s, unsigned int base, s8 *res);
> +int __must_check kstrtobool(const char *s, bool *res);
>  
>  extern unsigned long simple_strtoul(const char *,char **,unsigned int);
>  extern long simple_strtol(const char *,char **,unsigned int);
> diff --git a/lib/kstrtox.c b/lib/kstrtox.c
> index 05672e8..84cf08f 100644
> --- a/lib/kstrtox.c
> +++ b/lib/kstrtox.c
> @@ -225,4 +225,21 @@ int kstrtos8(const char *s, unsigned int base, s8 *res)
>  	return 0;
>  }
>  EXPORT_SYMBOL(kstrtos8);
> +
> +int kstrtobool(const char *s, bool *res)
> +{
> +	switch (s[0]) {
> +	case 'y':
> +	case 'Y':
> +	case '1':
> +		*res = true;
                break;

> +	case 'n':
> +	case 'N':
> +	case '0':
> +		*res = false;
                break;

> +	default:
> +		return -EINVAL;
> +	}
> +	return 0;
> +}
> +EXPORT_SYMBOL(kstrtobool);
> -- 
> 1.7.3.4
> 
> --
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