linux-kernel - Re: [PATCH 3/3] parser: add unsigned int parser

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Date:   Wed, 27 Jan 2021 19:27:30 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     bingjingc <bingjingc@...ology.com>, viro@...iv.linux.org.uk,
        jack@...e.com, jack@...e.cz, axboe@...nel.dk,
        linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, cccheng@...ology.com,
        robbieko@...ology.com
Subject: Re: [PATCH 3/3] parser: add unsigned int parser

Hi,

On 1/27/21 6:20 PM, bingjingc wrote:
> From: BingJing Chang <bingjingc@...ology.com>
> 
> Will be used by fs parsing options
> 
> Reviewed-by: Robbie Ko<robbieko@...ology.com>
> Reviewed-by: Chung-Chiang Cheng <cccheng@...ology.com>
> Signed-off-by: BingJing Chang <bingjingc@...ology.com>
> ---
>  fs/isofs/inode.c       | 16 ++--------------
>  fs/udf/super.c         | 16 ++--------------
>  include/linux/parser.h |  1 +
>  lib/parser.c           | 22 ++++++++++++++++++++++
>  4 files changed, 27 insertions(+), 28 deletions(-)

[snip]

> diff --git a/lib/parser.c b/lib/parser.c
> index f5b3e5d..2ec9c4f 100644
> --- a/lib/parser.c
> +++ b/lib/parser.c
> @@ -189,6 +189,28 @@ int match_int(substring_t *s, int *result)
>  EXPORT_SYMBOL(match_int);
>  
>  /**
> + * match_uint: - scan a decimal representation of an integer from a substring_t

This shows us that all of the kernel-doc for functions in
lib/parser.c is formatted incorrectly.

The above should be:

 * match_uint - scan a decimal representation of an integer from a substring_t

i.e., drop the ':' only on the function name lines, for all functions in
this source file.


If you don't want to do that, I'll plan to do it.


> + * @s: substring_t to be scanned
> + * @result: resulting integer on success
> + *
> + * Description: Attempts to parse the &substring_t @s as a decimal integer. On
> + * success, sets @result to the integer represented by the string and returns 0.
> + * Returns -ENOMEM, -EINVAL, or -ERANGE on failure.
> + */
> +int match_uint(substring_t *s, unsigned int *result)
> +{
> +	int err = -ENOMEM;
> +	char *buf = match_strdup(s);
> +
> +	if (buf) {
> +		err = kstrtouint(buf, 10, result);
> +		kfree(buf);
> +	}
> +	return err;
> +}
> +EXPORT_SYMBOL(match_uint);
> +
> +/**
>   * match_u64: - scan a decimal representation of a u64 from
>   *                  a substring_t

ditto.

>   * @s: substring_t to be scanned
> 


thanks.
-- 
~Randy