evm: replace hmac_status with evm_status

We will use digital signatures in addtion to hmac.
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>

security/integrity/evm/evm_main.c

@@ -56,8 +56,8 @@ static enum integrity_status evm_verify_hmac(struct dentry *dentry,
 	struct evm_ima_xattr_data xattr_data;
 	int rc;
 
-	if (iint->hmac_status == INTEGRITY_PASS)
-		return iint->hmac_status;
+	if (iint->evm_status == INTEGRITY_PASS)
+		return iint->evm_status;
 
 	/* if status is not PASS, try to check again - against -ENOMEM */
 
@@ -71,18 +71,18 @@ static enum integrity_status evm_verify_hmac(struct dentry *dentry,
 			   sizeof xattr_data, GFP_NOFS);
 	if (rc < 0)
 		goto err_out;
-	iint->hmac_status = INTEGRITY_PASS;
-	return iint->hmac_status;
+	iint->evm_status = INTEGRITY_PASS;
+	return iint->evm_status;
 
 err_out:
 	switch (rc) {
 	case -ENODATA:		/* file not labelled */
-		iint->hmac_status = INTEGRITY_NOLABEL;
+		iint->evm_status = INTEGRITY_NOLABEL;
 		break;
 	default:
-		iint->hmac_status = INTEGRITY_FAIL;
+		iint->evm_status = INTEGRITY_FAIL;
 	}
-	return iint->hmac_status;
+	return iint->evm_status;
 }
 
 static int evm_protected_xattr(const char *req_xattr_name)

security/integrity/iint.c

@@ -157,7 +157,7 @@ static void init_once(void *foo)
 	iint->version = 0;
 	iint->flags = 0UL;
 	mutex_init(&iint->mutex);
-	iint->hmac_status = INTEGRITY_UNKNOWN;
+	iint->evm_status = INTEGRITY_UNKNOWN;
 }
 
 static int __init integrity_iintcache_init(void)

security/integrity/integrity.h

@@ -37,7 +37,7 @@ struct integrity_iint_cache {
 	unsigned char flags;
 	u8 digest[SHA1_DIGEST_SIZE];
 	struct mutex mutex;	/* protects: version, flags, digest */
-	enum integrity_status hmac_status;
+	enum integrity_status evm_status;
 };
 
 /* rbtree tree calls to lookup, insert, delete