Add SPDX license identifiers to source files under the LGPL

[thirdparty/systemd.git] / src / resolve / resolved-dns-answer.h

diff --git a/src/resolve/resolved-dns-answer.h b/src/resolve/resolved-dns-answer.h
index 1875fd61366bde4a8816f7aeeddfab2ad3d6f586..af3378704415ad99fea192cebf06d333234bbae5 100644 (file)
--- a/src/resolve/resolved-dns-answer.h
+++ b/src/resolve/resolved-dns-answer.h
@@ -1,5 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
 /***
@@ -32,12 +31,14 @@ typedef struct DnsAnswerItem DnsAnswerItem;
  * can qualify A and AAAA RRs referring to a local link with the
  * right ifindex.
  *
- * Note that we usually encode the the empty DnsAnswer object as a simple NULL. */
+ * Note that we usually encode the empty DnsAnswer object as a simple NULL. */
 
 typedef enum DnsAnswerFlags {
-        DNS_ANSWER_AUTHENTICATED = 1, /* Item has been authenticated */
-        DNS_ANSWER_CACHEABLE     = 2, /* Item is subject to caching */
-        DNS_ANSWER_SHARED_OWNER  = 4, /* For mDNS: RRset may be owner by multiple peers */
+        DNS_ANSWER_AUTHENTICATED = 1,  /* Item has been authenticated */
+        DNS_ANSWER_CACHEABLE     = 2,  /* Item is subject to caching */
+        DNS_ANSWER_SHARED_OWNER  = 4,  /* For mDNS: RRset may be owner by multiple peers */
+        DNS_ANSWER_CACHE_FLUSH   = 8,  /* For mDNS: sets cache-flush bit in the rrclass of response records */
+        DNS_ANSWER_GOODBYE       = 16, /* For mDNS: item is subject to disappear */
 } DnsAnswerFlags;
 
 struct DnsAnswerItem {
@@ -58,7 +59,7 @@ DnsAnswer *dns_answer_unref(DnsAnswer *a);
 
 int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr, int ifindex, DnsAnswerFlags flags);
 int dns_answer_add_extend(DnsAnswer **a, DnsResourceRecord *rr, int ifindex, DnsAnswerFlags flags);
-int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl);
+int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl, int ifindex);
 
 int dns_answer_match_key(DnsAnswer *a, const DnsResourceKey *key, DnsAnswerFlags *combined_flags);
 int dns_answer_contains_rr(DnsAnswer *a, DnsResourceRecord *rr, DnsAnswerFlags *combined_flags);
@@ -89,6 +90,10 @@ static inline unsigned dns_answer_size(DnsAnswer *a) {
         return a ? a->n_rrs : 0;
 }
 
+static inline bool dns_answer_isempty(DnsAnswer *a) {
+        return dns_answer_size(a) <= 0;
+}
+
 void dns_answer_dump(DnsAnswer *answer, FILE *f);
 
 DEFINE_TRIVIAL_CLEANUP_FUNC(DnsAnswer*, dns_answer_unref);