Re: [PATCH v2 5/6] fs/ntfs3: Add iocharset= mount option as alias for nls=

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On Thursday 19 August 2021 03:26:32 Kari Argillander wrote:
> Other fs drivers are using iocharset= mount option for specifying charset.
> So add it also for ntfs3 and mark old nls= mount option as deprecated.
> 
> Signed-off-by: Kari Argillander <kari.argillander@xxxxxxxxx>
> ---
>  Documentation/filesystems/ntfs3.rst |  4 ++--
>  fs/ntfs3/super.c                    | 12 ++++++++----
>  2 files changed, 10 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/filesystems/ntfs3.rst b/Documentation/filesystems/ntfs3.rst
> index af7158de6fde..ded706474825 100644
> --- a/Documentation/filesystems/ntfs3.rst
> +++ b/Documentation/filesystems/ntfs3.rst
> @@ -32,12 +32,12 @@ generic ones.
>  
>  ===============================================================================
>  
> -nls=name		This option informs the driver how to interpret path
> +iocharset=name		This option informs the driver how to interpret path
>  			strings and translate them to Unicode and back. If
>  			this option is not set, the default codepage will be
>  			used (CONFIG_NLS_DEFAULT).
>  			Examples:
> -				'nls=utf8'
> +				'iocharset=utf8'
>  
>  uid=
>  gid=
> diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
> index 8e86e1956486..c3c07c181f15 100644
> --- a/fs/ntfs3/super.c
> +++ b/fs/ntfs3/super.c
> @@ -240,7 +240,7 @@ enum Opt {
>  	Opt_nohidden,
>  	Opt_showmeta,
>  	Opt_acl,
> -	Opt_nls,
> +	Opt_iocharset,
>  	Opt_prealloc,
>  	Opt_no_acs_rules,
>  	Opt_err,
> @@ -259,9 +259,13 @@ static const struct fs_parameter_spec ntfs_fs_parameters[] = {
>  	fsparam_flag_no("hidden",		Opt_nohidden),
>  	fsparam_flag_no("acl",			Opt_acl),
>  	fsparam_flag_no("showmeta",		Opt_showmeta),
> -	fsparam_string("nls",			Opt_nls),
>  	fsparam_flag_no("prealloc",		Opt_prealloc),
>  	fsparam_flag("no_acs_rules",		Opt_no_acs_rules),
> +	fsparam_string("iocharset",		Opt_iocharset),
> +
> +	__fsparam(fs_param_is_string,
> +		  "nls", Opt_iocharset,
> +		  fs_param_deprecated, NULL),

Anyway, this is a new filesystem driver. Therefore, do we need to have
for it since beginning deprecated option?

>  	{}
>  };
>  
> @@ -332,7 +336,7 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
>  	case Opt_showmeta:
>  		opts->showmeta = result.negated ? 0 : 1;
>  		break;
> -	case Opt_nls:
> +	case Opt_iocharset:
>  		opts->nls_name = param->string;
>  		param->string = NULL;
>  		break;
> @@ -519,7 +523,7 @@ static int ntfs_show_options(struct seq_file *m, struct dentry *root)
>  	if (opts->dmask)
>  		seq_printf(m, ",dmask=%04o", ~opts->fs_dmask_inv);
>  	if (opts->nls_name)
> -		seq_printf(m, ",nls=%s", opts->nls_name);
> +		seq_printf(m, ",iocharset=%s", opts->nls_name);
>  	if (opts->sys_immutable)
>  		seq_puts(m, ",sys_immutable");
>  	if (opts->discard)
> -- 
> 2.25.1
> 



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