linux-kernel - Re: [PATCH 14/16] block: remove blk_part_pack

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Date:   Wed, 10 May 2017 20:09:42 +0200
From:   Christoph Hellwig <hch@....de>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Amir Goldstein <amir73il@...il.com>,
        linux-fsdevel@...r.kernel.org
Cc:     Shaohua Li <shli@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        David Howells <dhowells@...hat.com>,
        Steven Whitehouse <swhiteho@...hat.com>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        linux-xfs@...r.kernel.org, linux-raid@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 14/16] block: remove blk_part_pack_uuid

On Wed, May 10, 2017 at 08:02:12PM +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@....de>
> [andy: correctly handle error returns from uuid_to_bin]
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  security/integrity/ima/ima_policy.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
> index 4d1178610145..49fbc3e8f012 100644
> --- a/security/integrity/ima/ima_policy.c
> +++ b/security/integrity/ima/ima_policy.c
> @@ -717,8 +717,9 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
>  				break;
>  			}
>  
> -			uuid_to_bin(args[0].from, (uuid_t *)entry->fsuuid);
> -			entry->flags |= IMA_FSUUID;
> +			result = uuid_to_bin(args[0].from, (uuid_t *)&entry->fsuuid);
> +			if (!result)
> +				entry->flags |= IMA_FSUUID;

This should have been folded into the previous patch..