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When the client informs the dispatcher of a received response, have the

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dispatcher copy the event instead of reusing the original one.
This commit is contained in:
Brian Wellington
2001-02-10 02:00:11 +00:00
parent 64e7f8541d
commit 319d2971f1
3 changed files with 32 additions and 22 deletions
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5
bin/named/client.c
View File

@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: client.c,v 1.145 2001/02/09 21:25:55 gson Exp $ */
/* $Id: client.c,v 1.146 2001/02/10 02:00:08 bwelling Exp $ */
#include <config.h>
@@ -1228,7 +1228,7 @@ client_request(isc_task_t *task, isc_event_t *event) {
ns_client_next(client, DNS_R_FORMERR);
goto cleanup_serverlock;
} else {
dns_dispatch_importrecv(client->dispatch, &event);
dns_dispatch_importrecv(client->dispatch, event);
ns_client_next(client, ISC_R_SUCCESS);
goto cleanup_serverlock;
}
@@ -1460,7 +1460,6 @@ client_request(isc_task_t *task, isc_event_t *event) {
dns_zonemgr_unlockconf(ns_g_server->zonemgr, isc_rwlocktype_read);
RWUNLOCK(&ns_g_server->conflock, isc_rwlocktype_read);
if (event != NULL)
isc_event_free(&event);
}

35
lib/dns/dispatch.c
View File

@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: dispatch.c,v 1.92 2001/02/09 00:23:12 gson Exp $ */
/* $Id: dispatch.c,v 1.93 2001/02/10 02:00:09 bwelling Exp $ */
#include <config.h>
@@ -2054,29 +2054,40 @@ dns_dispatch_changeattributes(dns_dispatch_t *disp,
}
void
dns_dispatch_importrecv(dns_dispatch_t *disp, isc_event_t **eventp) {
dns_dispatch_importrecv(dns_dispatch_t *disp, isc_event_t *event) {
void *buf;
isc_socketevent_t *sevent;
isc_socketevent_t *sevent, *newsevent;
REQUIRE(VALID_DISPATCH(disp));
REQUIRE((disp->attributes & DNS_DISPATCHATTR_NOLISTEN) != 0);
REQUIRE(eventp != NULL && *eventp != NULL);
REQUIRE(event != NULL);
sevent = (isc_socketevent_t *)*eventp;
sevent = (isc_socketevent_t *)event;
INSIST(sevent->n <= disp->mgr->buffersize);
newsevent = (isc_socketevent_t *)
isc_event_allocate(disp->mgr->mctx, NULL,
ISC_SOCKEVENT_RECVDONE, udp_recv,
disp, sizeof(isc_socketevent_t));
if (newsevent == NULL)
return;
buf = allocate_udp_buffer(disp);
if (buf == NULL) {
isc_event_free(eventp);
isc_event_free((isc_event_t **)&newsevent);
return;
}
memcpy(buf, sevent->region.base, sevent->n);
sevent->region.base = buf;
sevent->region.length = disp->mgr->buffersize;
sevent->ev_action = udp_recv;
sevent->ev_arg = disp;
sevent->ev_sender = NULL;
isc_task_send(disp->task, eventp);
newsevent->region.base = buf;
newsevent->region.length = disp->mgr->buffersize;
newsevent->n = sevent->n;
newsevent->result = sevent->result;
newsevent->address = sevent->address;
newsevent->timestamp = sevent->timestamp;
newsevent->pktinfo = sevent->pktinfo;
newsevent->attributes = sevent->attributes;
isc_task_send(disp->task, (isc_event_t **)&newsevent);
}
#if 0

12
lib/dns/include/dns/dispatch.h
View File

@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: dispatch.h,v 1.41 2001/02/09 00:23:16 gson Exp $ */
/* $Id: dispatch.h,v 1.42 2001/02/10 02:00:11 bwelling Exp $ */
#ifndef DNS_DISPATCH_H
#define DNS_DISPATCH_H 1
@@ -408,15 +408,15 @@ dns_dispatch_changeattributes(dns_dispatch_t *disp,
*/
void
dns_dispatch_importrecv(dns_dispatch_t *disp, isc_event_t **eventp);
dns_dispatch_importrecv(dns_dispatch_t *disp, isc_event_t *event);
/*
* Give a socket receive event to the dispatcher. This is used for sockets
* shared between dispatchers and clients. If the dispatcher fails to send
* the event, it frees it.
* Inform the dispatcher of a socket receive. This is used for sockets
* shared between dispatchers and clients. If the dispatcher fails to copy
* or send the event, nothing happens.
*
* Requires:
* disp is valid, and the attribute DNS_DISPATCHATTR_NOLISTEN is set.
* eventp != NULL && *eventp != NULL
* event != NULL
*/
ISC_LANG_ENDDECLS