Checking if RR type is a 'metatype'.

libknot/util/descriptor.c

@@ -636,3 +636,14 @@ size_t knot_wireformat_size(unsigned int wire_type)
 	} /* switch */
 }
 
+int knot_rrtype_is_metatype(uint16_t type)
+{
+	/*! \todo Check if there are some other metatypes. */
+	return (type == KNOT_RRTYPE_ANY
+	        || type == KNOT_RRTYPE_AXFR
+	        || type == KNOT_RRTYPE_IXFR
+	        || type == KNOT_RRTYPE_MAILA
+	        || type == KNOT_RRTYPE_MAILB
+	        || type == KNOT_RRTYPE_OPT);
+}
+

libknot/util/descriptor.h

@@ -336,6 +336,8 @@ uint16_t knot_rrclass_from_string(const char *name);
  */
 size_t knot_wireformat_size(unsigned int wire_type);
 
+int knot_rrtype_is_metatype(uint16_t type);
+
 #endif /* _KNOT_DESCRIPTOR_H_ */
 
 /*! @} */