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Delay kserver cleanup until all tasks finishes

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It might be possible some pending task would run when kserver is already
cleaned up. Postpone gsstsig structures cleanup after task and timer
managers are destroyed. No pending threads are possible after it.

Make action in maybeshutdown only if doshutdown was not already called.
Might be called from getinput event.

(cherry picked from commit 2685e69be8)
This commit is contained in:
Petr Mensik 2020-03-27 21:03:40 +01:00 committed by Ondřej Surý
parent ded53d8762
commit d33aef43de
1 changed files with 26 additions and 14 deletions
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40
bin/nsupdate/nsupdate.c
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@ -831,6 +831,10 @@ doshutdown(void) {
static void
maybeshutdown(void) {
/* when called from getinput, doshutdown might be already finished */
if (requestmgr == NULL)
return;
ddebug("Shutting down request manager");
dns_requestmgr_shutdown(requestmgr);
@ -2979,6 +2983,8 @@ send_gssrequest(isc_sockaddr_t *destaddr, dns_message_t *msg,
isc_sockaddr_t *srcaddr;
debug("send_gssrequest");
REQUIRE(destaddr != NULL);
reqinfo = isc_mem_get(gmctx, sizeof(nsu_gssinfo_t));
if (reqinfo == NULL)
fatal("out of memory");
@ -3269,20 +3275,6 @@ cleanup(void) {
ddebug("Detaching GSS-TSIG keyring");
dns_tsigkeyring_detach(&gssring);
}
if (kserver != NULL) {
isc_mem_put(gmctx, kserver, sizeof(isc_sockaddr_t));
kserver = NULL;
}
if (realm != NULL) {
isc_mem_free(gmctx, realm);
realm = NULL;
}
if (dns_name_dynamic(&tmpzonename)) {
dns_name_free(&tmpzonename, gmctx);
}
if (dns_name_dynamic(&restart_master)) {
dns_name_free(&restart_master, gmctx);
}
#endif
if (sig0key != NULL)
@ -3306,6 +3298,26 @@ cleanup(void) {
ddebug("Destroying name state");
dns_name_destroy();
#ifdef GSSAPI
/*
* Cleanup GSSAPI resources after taskmgr has been destroyed.
*/
if (kserver != NULL) {
isc_mem_put(gmctx, kserver, sizeof(isc_sockaddr_t));
kserver = NULL;
}
if (realm != NULL) {
isc_mem_free(gmctx, realm);
realm = NULL;
}
if (dns_name_dynamic(&tmpzonename)) {
dns_name_free(&tmpzonename, gmctx);
}
if (dns_name_dynamic(&restart_master)) {
dns_name_free(&restart_master, gmctx);
}
#endif
ddebug("Removing log context");
isc_log_destroy(&glctx);