Re: [PATCH 1/2] crypto: use SM3 instead of SM3_256

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On Sat, 2021-10-09 at 21:08 +0800, Tianjia Zhang wrote:
[...]
> diff --git a/include/uapi/linux/hash_info.h
> b/include/uapi/linux/hash_info.h
> index 74a8609fcb4d..1355525dd4aa 100644
> --- a/include/uapi/linux/hash_info.h
> +++ b/include/uapi/linux/hash_info.h
> @@ -32,7 +32,7 @@ enum hash_algo {
>  	HASH_ALGO_TGR_128,
>  	HASH_ALGO_TGR_160,
>  	HASH_ALGO_TGR_192,
> -	HASH_ALGO_SM3_256,
> +	HASH_ALGO_SM3,
>  	HASH_ALGO_STREEBOG_256,
>  	HASH_ALGO_STREEBOG_512,
>  	HASH_ALGO__LAST

This is another one you can't do: all headers in UAPI are exports to
userspace and the definitions constitute an ABI.  If you simply do a
rename, every userspace program that uses the current definition will
immediately break on compile.  You could add HASH_ALGO_SM3, but you
can't remove HASH_ALGO_SM3_256

James





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