linux-kernel - Re: [PATCH] parse_options(): replace deprecated strcpy with strscpy

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Message-ID: <a1471ca1-e119-4106-8965-cd954c373a62@kernel.org>
Date: Fri, 8 Nov 2024 17:46:54 +0800
From: Chao Yu <chao@...nel.org>
To: Daniel Yang <danielyangkang@...il.com>, Jaegeuk Kim <jaegeuk@...nel.org>,
 "open list:F2FS FILE SYSTEM" <linux-f2fs-devel@...ts.sourceforge.net>,
 open list <linux-kernel@...r.kernel.org>
Cc: Chao Yu <chao@...nel.org>
Subject: Re: [PATCH] parse_options(): replace deprecated strcpy with strscpy

On 2024/11/6 10:58, Daniel Yang wrote:
> strcpy is deprecated. Kernel docs recommend replacing strcpy with
> strscpy. The function strcpy() return value isn't used so there
> shouldn't be an issue replacing with the safer alternative strscpy.

It's better to add "f2fs: " prefix for commit title.

> 
> Signed-off-by: Daniel Yang <danielyangkang@...il.com>
> ---
>   fs/f2fs/super.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index 87ab5696b..ee8861b95 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -1158,7 +1158,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
>   				break;
>   			}
>   
> -			strcpy(ext[ext_cnt], name);
> +			strscpy(ext[ext_cnt], name);

Needs to handle return value of strscpy()?

>   			F2FS_OPTION(sbi).compress_ext_cnt++;
>   			kfree(name);
>   			break;
> @@ -1187,7 +1187,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
>   				break;
>   			}
>   
> -			strcpy(noext[noext_cnt], name);
> +			strscpy(noext[noext_cnt], name);

Ditto,

Thanks,

>   			F2FS_OPTION(sbi).nocompress_ext_cnt++;
>   			kfree(name);
>   			break;