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Code Issues Releases Wiki Activity

hold a nta reference while fetching

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This commit is contained in:
Mark Andrews 2014-07-10 10:24:47 +10:00
parent 1c1290afab
commit dcc7a2738f
1 changed files with 23 additions and 8 deletions
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17
lib/dns/nta.c
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@ -55,6 +55,15 @@ struct dns_nta {
#define NTA_MAGIC ISC_MAGIC('N', 'T', 'A', 'n')
#define VALID_NTA(nn) ISC_MAGIC_VALID(nn, NTA_MAGIC)
/*
* Obtain a reference to the nta object. Released by
* nta_detach.
*/
static void
nta_ref(dns_nta_t *nta) {
isc_refcount_increment(&nta->refcount, NULL);
}
static void
nta_detach(isc_mem_t *mctx, dns_nta_t **ntap) {
unsigned int refs;
@ -197,6 +206,7 @@ fetch_done(isc_task_t *task, isc_event_t *event) {
dns_nta_t *nta = devent->ev_arg;
isc_result_t eresult = devent->result;
dns_ntatable_t *ntatable = nta->ntatable;
dns_view_t *view = ntatable->view;
isc_stdtime_t now;
UNUSED(task);
@ -234,6 +244,7 @@ fetch_done(isc_task_t *task, isc_event_t *event) {
if (nta->timer != NULL && nta->expiry - now < ntatable->recheck)
(void) isc_timer_reset(nta->timer, isc_timertype_inactive,
NULL, NULL, ISC_TRUE);
nta_detach(view->mctx, &nta);
}
static void
@ -241,6 +252,7 @@ checkbogus(isc_task_t *task, isc_event_t *event) {
dns_nta_t *nta = event->ev_arg;
dns_ntatable_t *ntatable = nta->ntatable;
dns_view_t *view = ntatable->view;
isc_result_t result;
if (nta->fetch != NULL) {
dns_resolver_cancelfetch(nta->fetch);
@ -253,7 +265,8 @@ checkbogus(isc_task_t *task, isc_event_t *event) {
isc_event_free(&event);
(void)dns_resolver_createfetch(view->resolver, nta->name,
nta_ref(nta);
result = dns_resolver_createfetch(view->resolver, nta->name,
dns_rdatatype_nsec,
NULL, NULL, NULL,
DNS_FETCHOPT_NONTA,
@ -261,6 +274,8 @@ checkbogus(isc_task_t *task, isc_event_t *event) {
&nta->rdataset,
&nta->sigrdataset,
&nta->fetch);
if (result != ISC_R_SUCCESS)
nta_detach(view->mctx, &nta);
}
static isc_result_t