From: Colin Vidal <colin@isc.org>
Date: Tue, 26 May 2026 16:13:44 +0000 (+0200)
Subject: Fix delegdb flush API
X-Git-Tag: v9.21.23~24^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f9ba0517878801d1dbde69d7a87b0b314db9b10;p=thirdparty%2Fbind9.git

Fix delegdb flush API

The `rndc flush` command flushes the delegdb by deleting the
existing database and creating a new one. In the process, the
delegdb was losing its configured size limit; as a result, once
flushed, the delegdb size became unbounded.

This is now fixed by using `dns_delegdb_getconfig()` to back up the
current configuration before instantiating a new delegdb, then
restoring it with `dns_delegdb_setconfig()`.
---

diff --git a/bin/named/server.c b/bin/named/server.c
index 52faae029cd..c58a01467e7 100644
--- a/bin/named/server.c
+++ b/bin/named/server.c
@@ -11263,9 +11263,12 @@ cleanup:
 
 static void
 flush_delegdb(dns_view_t *view) {
+	dns_delegdb_config_t config = dns_delegdb_getconfig(view->deleg);
+
 	dns_delegdb_shutdown(view->deleg);
 	dns_delegdb_detach(&view->deleg);
 	dns_delegdb_create(&view->deleg);
+	dns_delegdb_setconfig(view->deleg, &config);
 }
 
 isc_result_t