# Re: \[PATCH v2 3/3\] blk-crypto: show crypto capabilities in sysfs

- From: Hannes Reinecke \<hare@suse.de\>
- Date: 2021-12-01 06:45:24 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2021/12/1592495
- Thread: https://ratatoskr.run/linux-block/2021/11/1590823/t.md

```text
On 11/30/21 8:40 AM, Eric Biggers wrote:
> On Tue, Nov 30, 2021 at 07:49:54AM +0100, Hannes Reinecke wrote:
>>>     - "modes" is a sub-subdirectory, since there may be multiple supported
>>>       crypto modes, and sysfs is supposed to have one value per file.
>>>
>> Why do you have a sub-directory here?
>>  From what I can see, that subdirectory just contains the supported modes, so
>> wouldn't it be easier to create individual files like 'mode_<modename>'
>> instead of a subdirectory?
>
> It is a group of attributes, so it makes sense to group them together rather
> than put them all in the parent directory alongside other attributes.  It also
> allows the use of proper names like "AES-256-XTS" rather than weird names like
> "mode_AES-256-XTS" or "mode_aes_256_xts".
>
Right.

Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
```