From 014892d86d30b7eceb0003d51788f9b5cadfc1bf Mon Sep 17 00:00:00 2001
From: Andreas Gustafsson <source@isc.org>
Date: Sat, 29 Apr 2000 01:49:37 +0000
Subject: [PATCH] added dns_rdatatype_isknown()

---
 CHANGES                     |  2 ++
 lib/dns/include/dns/rdata.h | 10 ++++++++++
 lib/dns/rdata.c             | 12 +++++++++++-
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 0695e3e5f5..c41e32f81c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,5 @@
+ 143.   [func]		Added function dns_rdatatype_isknown().
+
  142.   [cleanup]       <isc/stdtime.h> does not need <time.h> or
                         <isc/result.h>.
 
diff --git a/lib/dns/include/dns/rdata.h b/lib/dns/include/dns/rdata.h
index 785da0efe2..7078b269e9 100644
--- a/lib/dns/include/dns/rdata.h
+++ b/lib/dns/include/dns/rdata.h
@@ -483,6 +483,16 @@ isc_boolean_t dns_rdatatype_iszonecutauth(dns_rdatatype_t type);
  *
  */
 
+isc_boolean_t dns_rdatatype_isknown(dns_rdatatype_t type);
+/*
+ * Return true iff the rdata type 'type' is known.
+ *
+ * Requires:
+ * 	'type' is a valid rdata type.
+ *
+ */
+
+
 isc_result_t
 dns_rdata_additionaldata(dns_rdata_t *rdata, dns_additionaldatafunc_t add,
 			 void *arg);
diff --git a/lib/dns/rdata.c b/lib/dns/rdata.c
index dda7bb301f..8fb9e93508 100644
--- a/lib/dns/rdata.c
+++ b/lib/dns/rdata.c
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: rdata.c,v 1.80 2000/04/27 00:01:44 tale Exp $ */
+/* $Id: rdata.c,v 1.81 2000/04/29 01:48:11 gson Exp $ */
 
 #include <config.h>
 
@@ -1635,3 +1635,13 @@ dns_rdatatype_iszonecutauth(dns_rdatatype_t type)
 		dns_rdatatype_isdnssec(type) ?
 		ISC_TRUE : ISC_FALSE);
 }
+
+isc_boolean_t
+dns_rdatatype_isknown(dns_rdatatype_t type)
+{
+	if ((dns_rdatatype_attributes(type) & DNS_RDATATYPEATTR_UNKNOWN)
+	    == 0)
+		return (ISC_TRUE);
+	return (ISC_FALSE);
+}
+