evm: Use defined constant for UUID representation

Instead of sizeof use pre-defined constant for UUID representation.

While here, drop the implementation details of uuid_t type.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index 43e2dc3a60d008652553e61f4caf8050f19a7d9e..c37d08118af5dadfa7b97946fa8fbcc48d7495dc 100644 (file)
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -173,8 +173,7 @@ static void hmac_add_misc(struct shash_desc *desc, struct inode *inode,
        crypto_shash_update(desc, (const u8 *)&hmac_misc, sizeof(hmac_misc));
        if ((evm_hmac_attrs & EVM_ATTR_FSUUID) &&
            type != EVM_XATTR_PORTABLE_DIGSIG)
-               crypto_shash_update(desc, &inode->i_sb->s_uuid.b[0],
-                                   sizeof(inode->i_sb->s_uuid));
+               crypto_shash_update(desc, (u8 *)&inode->i_sb->s_uuid, UUID_SIZE);
        crypto_shash_final(desc, digest);
 }