Use catzs->lock in dns_catz_prereconfig()

There can be an update running in another thread, so use a lock,
like it's done in dns_catz_postreconfig().

(cherry picked from commit 3973724d67651d3a3d90c6a4d32add040ba2b707)

diff --git a/lib/dns/catz.c b/lib/dns/catz.c
index 30722db30702d5f8809b28efe03fcad9246dd33b..2a69d088c6daa2dd663c7bdb0ed24cf5b4100fe1 100644 (file)
--- a/lib/dns/catz.c
+++ b/lib/dns/catz.c
@@ -2579,6 +2579,7 @@ dns_catz_prereconfig(dns_catz_zones_t *catzs) {
 
        REQUIRE(DNS_CATZ_ZONES_VALID(catzs));
 
+       LOCK(&catzs->lock);
        isc_ht_iter_create(catzs->zones, &iter);
        for (result = isc_ht_iter_first(iter); result == ISC_R_SUCCESS;
             result = isc_ht_iter_next(iter))
@@ -2587,6 +2588,7 @@ dns_catz_prereconfig(dns_catz_zones_t *catzs) {
                isc_ht_iter_current(iter, (void **)&catz);
                catz->active = false;
        }
+       UNLOCK(&catzs->lock);
        INSIST(result == ISC_R_NOMORE);
        isc_ht_iter_destroy(&iter);
 }