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Commit 3ddd814a authored by Michael Graff's avatar Michael Graff
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dns_result_t is no more. s/dns_result_t/isc_result_t/ -- more later, when I need a break.

parent 542189f2
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Showing with 768 additions and 766 deletions
bin/named/include/named/zoneconf.h
View file @ 3ddd814a
......@@ -30,7 +30,7 @@
* table in 'cctx'.
*/
dns_result_t dns_zone_configure(isc_log_t *lctx, dns_c_ctx_t *ctx,
isc_result_t dns_zone_configure(isc_log_t *lctx, dns_c_ctx_t *ctx,
dns_aclconfctx_t *ac,
dns_c_zone_t *czone, dns_zone_t *zone);
/*
......
bin/named/interfacemgr.c
View file @ 3ddd814a
......@@ -96,7 +96,7 @@ ns_interfacemgr_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
return (DNS_R_SUCCESS);
}
static dns_result_t
static isc_result_t
ns_interface_create(ns_interfacemgr_t *mgr, isc_sockaddr_t *addr,
isc_boolean_t udp_only, ns_interface_t **ifpret) {
ns_interface_t *ifp;
......@@ -239,7 +239,7 @@ ns_interface_create(ns_interfacemgr_t *mgr, isc_sockaddr_t *addr,
return (DNS_R_UNEXPECTED);
}
static dns_result_t
static isc_result_t
ns_interface_destroy(ns_interface_t **ifpret) {
ns_interface_t *ifp;
REQUIRE(ifpret != NULL);
......@@ -291,7 +291,7 @@ purge_old_interfaces(ns_interfacemgr_t *mgr) {
INSIST(VALID_IFACE(ifp));
next = ISC_LIST_NEXT(ifp, link);
if (ifp->generation != mgr->generation) {
dns_result_t result = ns_interface_destroy(&ifp);
isc_result_t result = ns_interface_destroy(&ifp);
RUNTIME_CHECK(result == DNS_R_SUCCESS);
}
}
......
bin/named/notify.c
View file @ 3ddd814a
......@@ -134,7 +134,7 @@
/**************************************************************************/
static void
respond(ns_client_t *client, dns_result_t result) {
respond(ns_client_t *client, isc_result_t result) {
dns_rcode_t rcode;
dns_message_t *message;
isc_result_t msg_result;
......@@ -157,7 +157,7 @@ void
ns_notify_start(ns_client_t *client)
{
dns_message_t *request = client->message;
dns_result_t result;
isc_result_t result;
dns_name_t *zonename;
dns_rdataset_t *zone_rdataset;
dns_zone_t *zone = NULL;
......
bin/named/query.c
View file @ 3ddd814a
......@@ -432,7 +432,7 @@ query_simplefind(void *arg, dns_name_t *name, dns_rdatatype_t type,
db = NULL;
result = dns_zt_find(client->view->zonetable, name, NULL, &zone);
if (result == DNS_R_SUCCESS || result == DNS_R_PARTIALMATCH) {
dns_result_t tresult;
isc_result_t tresult;
tresult = dns_zone_getdb(zone, &db);
if (tresult != DNS_R_SUCCESS)
result = tresult;
......@@ -552,7 +552,7 @@ query_isduplicate(ns_client_t *client, dns_name_t *name,
{
dns_section_t section;
dns_name_t *mname = NULL;
dns_result_t result;
isc_result_t result;
for (section = DNS_SECTION_ANSWER;
section <= DNS_SECTION_ADDITIONAL;
......@@ -637,7 +637,7 @@ query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t qtype) {
*/
result = dns_zt_find(client->view->zonetable, name, NULL, &zone);
if (result == DNS_R_SUCCESS || result == DNS_R_PARTIALMATCH) {
dns_result_t tresult;
isc_result_t tresult;
tresult = dns_zone_getdb(zone, &db);
if (tresult != DNS_R_SUCCESS)
result = tresult;
......
bin/named/rootns.c
View file @ 3ddd814a
......@@ -66,7 +66,7 @@ static char root_ns[] =
isc_result_t
ns_rootns_init(void) {
dns_result_t result, eresult;
isc_result_t result, eresult;
isc_buffer_t source;
size_t len;
int soacount, nscount;
......
bin/named/server.c
View file @ 3ddd814a
......@@ -158,7 +158,7 @@ create_default_view(dns_c_ctx_t *cctx, isc_mem_t *mctx,
*/
static isc_result_t
create_version_view(dns_c_ctx_t *configctx, dns_view_t **viewp) {
dns_result_t result;
isc_result_t result;
dns_db_t *db = NULL;
dns_zone_t *zone = NULL;
dns_dbversion_t *dbver = NULL;
......
bin/named/update.c
View file @ 3ddd814a
......@@ -153,7 +153,7 @@ typedef struct update_event update_event_t;
struct update_event {
ISC_EVENT_COMMON(update_event_t);
dns_zone_t *zone;
dns_result_t result;
isc_result_t result;
};
......@@ -175,13 +175,13 @@ static void updatedone_action(isc_task_t *task, isc_event_t *event);
* '*tuple' == NULL. Either the tuple is freed, or its
* ownership has been transferred to the diff.
*/
static dns_result_t
static isc_result_t
do_one_tuple(dns_difftuple_t **tuple,
dns_db_t *db, dns_dbversion_t *ver,
dns_diff_t *diff)
{
dns_diff_t temp_diff;
dns_result_t result;
isc_result_t result;
/* Create a singleton diff */
dns_diff_init(diff->mctx, &temp_diff);
......@@ -202,13 +202,13 @@ do_one_tuple(dns_difftuple_t **tuple,
return (DNS_R_SUCCESS);
}
static dns_result_t
static isc_result_t
update_one_rr(dns_db_t *db, dns_dbversion_t *ver, dns_diff_t *diff,
dns_diffop_t op, dns_name_t *name,
dns_ttl_t ttl, dns_rdata_t *rdata)
{
dns_difftuple_t *tuple = NULL;
dns_result_t result;
isc_result_t result;
result = dns_difftuple_create(diff->mctx, op,
name, ttl, rdata, &tuple);
if (result != DNS_R_SUCCESS)
......@@ -237,10 +237,10 @@ update_one_rr(dns_db_t *db, dns_dbversion_t *ver, dns_diff_t *diff,
*/
/* Function type for foreach_rrset() iterator actions. */
typedef dns_result_t rrset_func(void *data, dns_rdataset_t *rrset);
typedef isc_result_t rrset_func(void *data, dns_rdataset_t *rrset);
/* Function type for foreach_rr() iterator actions. */
typedef dns_result_t rr_func(void *data, rr_t *rr);
typedef isc_result_t rr_func(void *data, rr_t *rr);
/* Internal context struct for foreach_node_rr(). */
typedef struct {
......@@ -249,10 +249,10 @@ typedef struct {
} foreach_node_rr_ctx_t;
/* Internal helper function for foreach_node_rr(). */
static dns_result_t
static isc_result_t
foreach_node_rr_action(void *data, dns_rdataset_t *rdataset)
{
dns_result_t result;
isc_result_t result;
foreach_node_rr_ctx_t *ctx = data;
for (result = dns_rdataset_first(rdataset);
result == DNS_R_SUCCESS;
......@@ -277,14 +277,14 @@ foreach_node_rr_action(void *data, dns_rdataset_t *rdataset)
*
* If 'action' returns an error, abort iteration and return the error.
*/
static dns_result_t
static isc_result_t
foreach_rrset(dns_db_t *db,
dns_dbversion_t *ver,
dns_name_t *name,
rrset_func *action,
void *action_data)
{
dns_result_t result;
isc_result_t result;
dns_dbnode_t *node;
dns_rdatasetiter_t *iter;
......@@ -336,7 +336,7 @@ foreach_rrset(dns_db_t *db,
* If 'action' returns an error, abort iteration
* and return the error.
*/
static dns_result_t
static isc_result_t
foreach_node_rr(dns_db_t *db,
dns_dbversion_t *ver,
dns_name_t *name,
......@@ -360,7 +360,7 @@ foreach_node_rr(dns_db_t *db,
*
* If 'action' returns an error, abort iteration and return the error.
*/
static dns_result_t
static isc_result_t
foreach_rr(dns_db_t *db,
dns_dbversion_t *ver,
dns_name_t *name,
......@@ -370,7 +370,7 @@ foreach_rr(dns_db_t *db,
void *rr_action_data)
{
dns_result_t result;
isc_result_t result;
dns_dbnode_t *node;
dns_rdataset_t rdataset;
......@@ -431,7 +431,7 @@ foreach_rr(dns_db_t *db,
typedef isc_boolean_t rr_predicate(dns_rdata_t *update_rr, dns_rdata_t *db_rr);
/* Helper function for rrset_exists(). */
static dns_result_t
static isc_result_t
rrset_exists_action(void *data, rr_t *rr) /*ARGSUSED*/
{
data = data; /* Unused */
......@@ -463,19 +463,19 @@ rrset_exists_action(void *data, rr_t *rr) /*ARGSUSED*/
* Set '*exists' to true iff an rrset of the given type exists,
* to false otherwise.
*/
static dns_result_t
static isc_result_t
rrset_exists(dns_db_t *db, dns_dbversion_t *ver,
dns_name_t *name, dns_rdatatype_t type, dns_rdatatype_t covers,
isc_boolean_t *exists)
{
dns_result_t result;
isc_result_t result;
result = foreach_rr(db, ver, name, type, covers,
rrset_exists_action, NULL);
RETURN_EXISTENCE_FLAG;
}
/* Helper function for cname_incompatible_rrset_exists */
static dns_result_t
static isc_result_t
cname_compatibility_action(void *data, dns_rdataset_t *rrset)
/*ARGSUSED*/
{
......@@ -494,17 +494,17 @@ cname_compatibility_action(void *data, dns_rdataset_t *rrset)
* If such an incompatible rrset exists, set '*exists' to ISC_TRUE.
* Otherwise, set it to ISC_FALSE.
*/
static dns_result_t
static isc_result_t
cname_incompatible_rrset_exists(dns_db_t *db, dns_dbversion_t *ver,
dns_name_t *name, isc_boolean_t *exists) {
dns_result_t result;
isc_result_t result;
result = foreach_rrset(db, ver, name,
cname_compatibility_action, NULL);
RETURN_EXISTENCE_FLAG;
}
/* Helper function for rr_count(). */
static dns_result_t
static isc_result_t
count_rr_action(void *data, rr_t *rr) /*ARGSUSED*/ {
int *countp = data;
rr = rr; /* Unused. */
......@@ -515,7 +515,7 @@ count_rr_action(void *data, rr_t *rr) /*ARGSUSED*/ {
/*
* Count the number of RRs of 'type' belonging to 'name' in 'ver' of 'db'.
*/
static dns_result_t
static isc_result_t
rr_count(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
dns_rdatatype_t type, dns_rdatatype_t covers, int *countp)
{
......@@ -536,7 +536,7 @@ typedef struct {
/* Helper function for matching_rr_exists(). */
static dns_result_t
static isc_result_t
matching_rr_exists_action(void *data, rr_t *rr) {
matching_rr_exists_ctx_t *ctx = data;
if ((*ctx->predicate)(ctx->update_rr, &rr->rdata))
......@@ -550,7 +550,7 @@ matching_rr_exists_action(void *data, rr_t *rr) {
* true for at least one of them, set '*exists' to ISC_TRUE. Otherwise,
* set it to ISC_FALSE.
*/
static dns_result_t
static isc_result_t
matching_rr_exists(rr_predicate *predicate,
dns_db_t *db,
dns_dbversion_t *ver,
......@@ -560,7 +560,7 @@ matching_rr_exists(rr_predicate *predicate,
dns_rdata_t *update_rr,
isc_boolean_t *exists)
{
dns_result_t result;
isc_result_t result;
matching_rr_exists_ctx_t ctx;
ctx.predicate = predicate;
ctx.db = db;
......@@ -575,7 +575,7 @@ matching_rr_exists(rr_predicate *predicate,
/* Context struct and helper function for name_exists() */
static dns_result_t
static isc_result_t
name_exists_action(void *data, dns_rdataset_t *rrset) /*ARGSUSED*/
{
data = data; /* Unused */
......@@ -586,11 +586,11 @@ name_exists_action(void *data, dns_rdataset_t *rrset) /*ARGSUSED*/
/*
* Set '*exists' to true iff the given name exists, to false otherwise.
*/
static dns_result_t
static isc_result_t
name_exists(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
isc_boolean_t *exists)
{
dns_result_t result;
isc_result_t result;
result = foreach_rrset(db, ver, name,
name_exists_action, NULL);
RETURN_EXISTENCE_FLAG;
......@@ -612,10 +612,10 @@ name_exists(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
* Append a tuple asserting the existence of the RR with
* 'name' and 'rdata' to 'diff'.
*/
static dns_result_t
static isc_result_t
temp_append(dns_diff_t *diff, dns_name_t *name, dns_rdata_t *rdata)
{
dns_result_t result;
isc_result_t result;
dns_difftuple_t *tuple = NULL;
REQUIRE(DNS_DIFF_VALID(diff));
......@@ -632,7 +632,7 @@ temp_append(dns_diff_t *diff, dns_name_t *name, dns_rdata_t *rdata)
* Return DNS_R_SUCCESS if the rdatasets are equal, rcode(dns_rcode_nxrrset)
* if not.
*/
static dns_result_t
static isc_result_t
temp_check_rrset(dns_difftuple_t *a, dns_difftuple_t *b) {
for (;;) {
if (a == NULL || b == NULL)
......@@ -681,11 +681,11 @@ temp_order(const void *av, const void *bv)
* rcode(dns_rcode_nxrrset) if not.
*/
static dns_result_t
static isc_result_t
temp_check(isc_mem_t *mctx, dns_diff_t *temp, dns_db_t *db,
dns_dbversion_t *ver)
{
dns_result_t result;
isc_result_t result;
dns_name_t *name;
dns_dbnode_t *node;
dns_difftuple_t *t;
......@@ -901,11 +901,11 @@ replaces_p(dns_rdata_t *update_rr, dns_rdata_t *db_rr) {
}
/* Internal helper function for delete_if(). */
static dns_result_t
static isc_result_t
delete_if_action(void *data, rr_t *rr) {
conditional_delete_ctx_t *ctx = data;
if ((*ctx->predicate)(ctx->update_rr, &rr->rdata)) {
dns_result_t result;
isc_result_t result;
result = update_one_rr(ctx->db, ctx->ver, ctx->diff,
DNS_DIFFOP_DEL, ctx->name,
rr->ttl, &rr->rdata);
......@@ -922,7 +922,7 @@ delete_if_action(void *data, rr_t *rr) {
* RRs for which the predicate returns true, and log the
* deletions in 'diff'.
*/
static dns_result_t
static isc_result_t
delete_if(rr_predicate *predicate,
dns_db_t *db,
dns_dbversion_t *ver,
......@@ -963,7 +963,7 @@ get_current_rr(dns_message_t *msg, dns_section_t section,
dns_rdataclass_t *update_class)
{
dns_rdataset_t *rdataset;
dns_result_t result;
isc_result_t result;
dns_message_currentname(msg, section, name);
rdataset = ISC_LIST_HEAD((*name)->list);
INSIST(rdataset != NULL);
......@@ -990,14 +990,14 @@ get_current_rr(dns_message_t *msg, dns_section_t section,
* or the SOA rdataset warrant at least an UNEXPECTED_ERROR().
*/
static dns_result_t
static isc_result_t
increment_soa_serial(dns_db_t *db, dns_dbversion_t *ver,
dns_diff_t *diff, isc_mem_t *mctx)
{
dns_difftuple_t *deltuple = NULL;
dns_difftuple_t *addtuple = NULL;
isc_uint32_t serial;
dns_result_t result;
isc_result_t result;
CHECK(dns_db_createsoatuple(db, ver, mctx, DNS_DIFFOP_DEL, &deltuple));
CHECK(dns_difftuple_copy(deltuple, &addtuple));
......@@ -1043,14 +1043,14 @@ increment_soa_serial(dns_db_t *db, dns_dbversion_t *ver,
* Paul says 3.4.2.2 is correct.
*
*/
static dns_result_t
static isc_result_t
check_soa_increment(dns_db_t *db, dns_dbversion_t *ver,
dns_rdata_t *update_rdata,
isc_boolean_t *ok)
{
isc_uint32_t db_serial;
isc_uint32_t update_serial;
dns_result_t result;
isc_result_t result;
update_serial = dns_soa_getserial(update_rdata);
......@@ -1079,9 +1079,9 @@ check_soa_increment(dns_db_t *db, dns_dbversion_t *ver,
* We abuse the dns_diff_t type to represent a set of domain names
* affected by the update.
*/
static dns_result_t
static isc_result_t
namelist_append_name(dns_diff_t *list, dns_name_t *name) {
dns_result_t result;
isc_result_t result;
dns_difftuple_t *tuple = NULL;
static dns_rdata_t dummy_rdata = { NULL, 0, 0, 0, { NULL, NULL } };
CHECK(dns_difftuple_create(list->mctx, DNS_DIFFOP_EXISTS, name, 0,
......@@ -1091,10 +1091,10 @@ namelist_append_name(dns_diff_t *list, dns_name_t *name) {
return (result);
}
static dns_result_t
static isc_result_t
namelist_append_subdomain(dns_db_t *db, dns_name_t *name, dns_diff_t *affected)
{
dns_result_t result;
isc_result_t result;
dns_fixedname_t fixedname;
dns_name_t *child;
dns_dbiterator_t *dbit = NULL;
......@@ -1125,7 +1125,7 @@ namelist_append_subdomain(dns_db_t *db, dns_name_t *name, dns_diff_t *affected)
/* Helper function for non_nxt_rrset_exists(). */
static dns_result_t
static isc_result_t
is_non_nxt_action(void *data, dns_rdataset_t *rrset)
/*ARGSUSED*/
{
......@@ -1145,10 +1145,10 @@ is_non_nxt_action(void *data, dns_rdataset_t *rrset)
* If such an rrset exists, set '*exists' to ISC_TRUE.
* Otherwise, set it to ISC_FALSE.
*/
static dns_result_t
static isc_result_t
non_nxt_rrset_exists(dns_db_t *db, dns_dbversion_t *ver,
dns_name_t *name, isc_boolean_t *exists) {
dns_result_t result;
isc_result_t result;
result = foreach_rrset(db, ver, name,
is_non_nxt_action, NULL);
RETURN_EXISTENCE_FLAG;
......@@ -1167,9 +1167,9 @@ name_order(const void *av, const void *bv)
return (dns_name_compare(&a->name, &b->name));
}
static dns_result_t
static isc_result_t
uniqify_name_list(dns_diff_t *list) {
dns_result_t result;
isc_result_t result;
dns_difftuple_t *p, *q;
CHECK(dns_diff_sort(list, name_order));
......@@ -1190,11 +1190,11 @@ uniqify_name_list(dns_diff_t *list) {
}
static dns_result_t
static isc_result_t
is_glue(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
isc_boolean_t *flag)
{
dns_result_t result;
isc_result_t result;
dns_fixedname_t foundname;
dns_fixedname_init(&foundname);
result = dns_db_find(db, name, ver, dns_rdatatype_any,
......@@ -1223,11 +1223,11 @@ is_glue(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
* have had their NXTs removed because they are obscured by
* a zone cut.
*/
static dns_result_t
static isc_result_t
next_active(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *oldname,
dns_name_t *newname, isc_boolean_t forward)
{
dns_result_t result;
isc_result_t result;
dns_dbiterator_t *dbit = NULL;
isc_boolean_t has_nxt;
......@@ -1272,9 +1272,9 @@ next_active(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *oldname,
/*
* Add a NXT record for "name", recording the change in "diff".
*/
static dns_result_t
static isc_result_t
add_nxt(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name, dns_diff_t *diff) {
dns_result_t result;
isc_result_t result;
dns_dbnode_t *node = NULL;
unsigned char buffer[DNS_NXT_BUFFERSIZE];
dns_rdata_t rdata;
......@@ -1311,9 +1311,9 @@ add_nxt(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name, dns_diff_t *diff)
/*
* Add a placeholder NXT record for "name", recording the change in "diff".
*/
static dns_result_t
static isc_result_t
add_placeholder_nxt(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name, dns_diff_t *diff) {
dns_result_t result;
isc_result_t result;
dns_difftuple_t *tuple = NULL;
isc_region_t r;
unsigned char data[1] = { 0 }; /* The root domain, no bits. */
......@@ -1329,11 +1329,11 @@ add_placeholder_nxt(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name, dns_di
return (result);
}
static dns_result_t
static isc_result_t
find_zone_keys(dns_db_t *db, dns_dbversion_t *ver, isc_mem_t *mctx,
unsigned int maxkeys, dst_key_t **keys, unsigned int *nkeys)
{
dns_result_t result;
isc_result_t result;
dns_dbnode_t *node = NULL;
CHECK(dns_db_findnode(db, dns_db_origin(db), ISC_FALSE, &node));
CHECK(dns_dnssec_findzonekeys(db, ver, node, dns_db_origin(db),
......@@ -1347,13 +1347,13 @@ find_zone_keys(dns_db_t *db, dns_dbversion_t *ver, isc_mem_t *mctx,
/*
* Add SIG records for an RRset, recording the change in "diff".
*/
static dns_result_t
static isc_result_t
add_sigs(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
dns_rdatatype_t type, dns_diff_t *diff, dst_key_t **keys,
unsigned int nkeys, isc_mem_t *mctx, isc_stdtime_t now,
isc_stdtime_t expire)
{
dns_result_t result;
isc_result_t result;
dns_dbnode_t *node = NULL;
dns_rdataset_t rdataset;
dns_rdata_t sig_rdata;
......@@ -1400,11 +1400,11 @@ add_sigs(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
* The necessary SIG and NXT changes will be applied to "newver"
* and added (as a minimal diff) to "diff".
*/
static dns_result_t
static isc_result_t
update_signatures(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *oldver,
dns_dbversion_t *newver, dns_diff_t *diff)
{
dns_result_t result;
isc_result_t result;
dns_difftuple_t *t;
dns_diff_t diffnames;
dns_diff_t affected;
......@@ -1697,9 +1697,9 @@ update_signatures(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *oldver,
* the RFC2136 pseudocode as closely as possible.
*/
static dns_result_t
static isc_result_t
send_update_event(ns_client_t *client, dns_zone_t *zone) {
dns_result_t result = DNS_R_SUCCESS;
isc_result_t result = DNS_R_SUCCESS;
update_event_t *event = NULL;
isc_task_t *zonetask = NULL;
......@@ -1721,16 +1721,17 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
}
static void
respond(ns_client_t *client, dns_result_t result) {
int msg_result;
respond(ns_client_t *client, isc_result_t result) {
isc_result_t msg_result;
dns_message_t *response = NULL;
msg_result = dns_message_create(client->mctx, DNS_MESSAGE_INTENTRENDER,
&response);
if (msg_result != DNS_R_SUCCESS)
goto msg_failure;
response->id = client->message->id;
response->rcode = dns_result_torcode(result));
response->rcode = dns_result_torcode(result);
response->flags = client->message->flags;
response->flags |= DNS_MESSAGEFLAG_QR;
response->opcode = client->message->opcode;
......@@ -1752,7 +1753,7 @@ void
ns_update_start(ns_client_t *client)
{
dns_message_t *request = client->message;
dns_result_t result;
isc_result_t result;
dns_name_t *zonename;
dns_rdataset_t *zone_rdataset;
dns_zone_t *zone = NULL;
......@@ -1821,7 +1822,7 @@ update_action(isc_task_t *task, isc_event_t *event)
dns_zone_t *zone = uev->zone;
ns_client_t *client = (ns_client_t *) event->arg;
dns_result_t result;
isc_result_t result;
dns_db_t *db = NULL;
dns_dbversion_t *oldver = NULL;