Re: [PATCH 15/23] block: remove blk_part_pack_uuid

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On Thu, 2017-05-18 at 08:26 +0200, Christoph Hellwig wrote:
> This helper was only used by IMA of all things, which would get spurious
> errors if CONFIG_BLOCK is disabled.  Just opencode the call there.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Acked-by: Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx>

> ---
>  include/linux/genhd.h               | 11 -----------
>  security/integrity/ima/ima_policy.c |  3 +--
>  2 files changed, 1 insertion(+), 13 deletions(-)
> 
> diff --git a/include/linux/genhd.h b/include/linux/genhd.h
> index acff9437e5c3..e619fae2f037 100644
> --- a/include/linux/genhd.h
> +++ b/include/linux/genhd.h
> @@ -219,12 +219,6 @@ static inline struct gendisk *part_to_disk(struct hd_struct *part)
>  	return NULL;
>  }
> 
> -static inline int blk_part_pack_uuid(const u8 *uuid_str, u8 *to)
> -{
> -	uuid_be_to_bin(uuid_str, (uuid_be *)to);
> -	return 0;
> -}
> -
>  static inline int disk_max_parts(struct gendisk *disk)
>  {
>  	if (disk->flags & GENHD_FL_EXT_DEVT)
> @@ -736,11 +730,6 @@ static inline dev_t blk_lookup_devt(const char *name, int partno)
>  	dev_t devt = MKDEV(0, 0);
>  	return devt;
>  }
> -
> -static inline int blk_part_pack_uuid(const u8 *uuid_str, u8 *to)
> -{
> -	return -EINVAL;
> -}
>  #endif /* CONFIG_BLOCK */
> 
>  #endif /* _LINUX_GENHD_H */
> diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
> index 3ab1067db624..49fbc3e8f012 100644
> --- a/security/integrity/ima/ima_policy.c
> +++ b/security/integrity/ima/ima_policy.c
> @@ -717,8 +717,7 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
>  				break;
>  			}
> 
> -			result = blk_part_pack_uuid(args[0].from,
> -						    entry->fsuuid);
> +			result = uuid_to_bin(args[0].from, (uuid_t *)&entry->fsuuid);
>  			if (!result)
>  				entry->flags |= IMA_FSUUID;
>  			break;




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