linux-kernel - Re: [PATCH 1/1] fs: udf: parse

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Message-ID: <20140130001108.GA24649@quack.suse.cz>
Date:	Thu, 30 Jan 2014 01:11:08 +0100
From:	Jan Kara <jack@...e.cz>
To:	Fabian Frederick <fabf@...net.be>
Cc:	linux-kernel@...r.kernel.org, jack@...e.cz,
	akpm@...ux-foundation.org, rdunlap@...radead.org,
	viro@...iv.linux.org.uk
Subject: Re: [PATCH 1/1] fs: udf: parse_options: blocksize check

On Wed 29-01-14 17:13:16, Fabian Frederick wrote:
> Both affs and isofs check for blocksize integrity during
> parse_options.Do the same thing for udf.
> 
> Valid values : 512, 1024, 2048 or 4096 bytes.
  Thanks. Merged into my tree.

							Honza

> 
> Signed-off-by: Fabian Frederick <fabf@...net.be>
> ---
>  fs/udf/super.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/udf/super.c b/fs/udf/super.c
> index 3306b9f..ac76538 100644
> --- a/fs/udf/super.c
> +++ b/fs/udf/super.c
> @@ -505,6 +505,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
>  	while ((p = strsep(&options, ",")) != NULL) {
>  		substring_t args[MAX_OPT_ARGS];
>  		int token;
> +		unsigned n;
>  		if (!*p)
>  			continue;
>  
> @@ -516,7 +517,10 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
>  		case Opt_bs:
>  			if (match_int(&args[0], &option))
>  				return 0;
> -			uopt->blocksize = option;
> +			n = option;
> +			if (n != 512 && n != 1024 && n != 2048 && n != 4096)
> +				return 0;
> +			uopt->blocksize = n;
>  			uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET);
>  			break;
>  		case Opt_unhide:
> -- 
> 1.8.1.4
> 
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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