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review of worker.c

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git-svn-id: file:///svn/unbound/trunk@211 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2007-04-02 10:16:02 +00:00
parent 6849e91549
commit c6ab7d4f50
4 changed files with 21 additions and 7 deletions
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17
daemon/worker.c
View file

@ -158,13 +158,15 @@ worker_handle_reply(struct comm_point* c, void* arg, int error,
replyerror(LDNS_RCODE_SERVFAIL, w);
return 0;
}
memmove(rep->reply, ldns_buffer_at(c->buffer, DNS_ID_AND_FLAGS),
memcpy(rep->reply, ldns_buffer_at(c->buffer, DNS_ID_AND_FLAGS),
rep->replysize);
reply_info_answer_iov(rep, w->query_id, w->query_flags,
&w->query_reply);
req_release(w);
/* store or update reply in the cache */
if(!(e = query_info_entrysetup(&w->qinfo, rep, w->query_hash))) {
free(rep->reply);
free(rep);
log_err("out of memory");
return 0;
}
@ -291,10 +293,11 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
}
h = query_info_hash(&qinfo);
if((e=slabhash_lookup(worker->daemon->msg_cache, h, &qinfo, 0))) {
/* answer from cache */
/* answer from cache - we have acquired a readlock on it */
uint16_t id;
log_info("answer from the cache");
reply_info_answer_iov((struct reply_info*)e->data,
ldns_buffer_read_u16_at(c->buffer, 0),
memcpy(&id, ldns_buffer_begin(c->buffer), sizeof(uint16_t));
reply_info_answer_iov((struct reply_info*)e->data, id,
ldns_buffer_read_u16_at(c->buffer, 2), repinfo);
lock_rw_unlock(&e->lock);
return 0;
@ -307,7 +310,7 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
}
/* grab a work request structure for this new request */
if(!worker->free_queries) {
if(!(w = worker->free_queries)) {
/* we could get this due to a slow tcp incoming query,
that started before we performed listen_pushback */
verbose(VERB_DETAIL, "worker: too many incoming requests "
@ -315,7 +318,6 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
comm_point_drop_reply(repinfo);
return 0;
}
w = worker->free_queries;
worker->free_queries = w->next;
worker->num_requests ++;
log_assert(worker->num_requests <= worker->request_size);
@ -351,14 +353,17 @@ worker_sighandler(int sig, void* arg)
break;
case SIGINT:
log_info("caught signal SIGINT");
worker->need_to_restart = 0;
comm_base_exit(worker->base);
break;
case SIGQUIT:
log_info("caught signal SIGQUIT");
worker->need_to_restart = 0;
comm_base_exit(worker->base);
break;
case SIGTERM:
log_info("caught signal SIGTERM");
worker->need_to_restart = 0;
comm_base_exit(worker->base);
break;
default:

5
doc/Changelog
View file

@ -1,3 +1,8 @@
2 April 2007: Wouter
- check sizes of udp received messages, not too short.
- review changes. Some memmoves can be memcpys: 4byte aligned.
set id correctly on cached answers.
29 March 2007: Wouter
- writev or sendmsg used when answering from cache.
This avoids a copy of the data.

4
services/outside_network.c
View file

@ -123,6 +123,10 @@ outnet_udp_cb(struct comm_point* c, void* arg, int error,
log_info("outnetudp got udp error %d", error);
return 0;
}
if(ldns_buffer_limit(c->buffer) < LDNS_HEADER_SIZE) {
log_info("outnetudp udp too short");
return 0;
}
log_assert(reply_info);
/* setup lookup key */

2
util/data/msgreply.c
View file

@ -98,7 +98,7 @@ query_info_allocqname(struct query_info* m)
log_err("query_info_allocqname: out of memory");
return 0; /* out of memory */
}
memmove(m->qname, q, m->qnamesize);
memcpy(m->qname, q, m->qnamesize);
return 1;
}