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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr.h"
#include "apr_poll.h"
#include "apr_arch_networkio.h"
#include "apr_arch_file_io.h"
#if HAVE_POLL_H
#include <poll.h>
#endif
#if HAVE_SYS_POLL_H
#include <sys/poll.h>
#endif
APR_DECLARE(apr_status_t) apr_poll_setup(apr_pollfd_t **new, apr_int32_t num, apr_pool_t *cont)
{
(*new) = (apr_pollfd_t *)apr_pcalloc(cont, sizeof(apr_pollfd_t) * (num + 1));
if ((*new) == NULL) {
return APR_ENOMEM;
}
(*new)[num].desc_type = APR_POLL_LASTDESC;
(*new)[0].p = cont;
return APR_SUCCESS;
}
static apr_pollfd_t *find_poll_sock(apr_pollfd_t *aprset, apr_socket_t *sock)
{
apr_pollfd_t *curr = aprset;
while (curr->desc.s != sock) {
if (curr->desc_type == APR_POLL_LASTDESC) {
return NULL;
}
curr++;
}
return curr;
}
APR_DECLARE(apr_status_t) apr_poll_socket_add(apr_pollfd_t *aprset,
apr_socket_t *sock, apr_int16_t event)
{
apr_pollfd_t *curr = aprset;
while (curr->desc_type != APR_NO_DESC) {
if (curr->desc_type == APR_POLL_LASTDESC) {
return APR_ENOMEM;
}
curr++;
}
curr->desc.s = sock;
curr->desc_type = APR_POLL_SOCKET;
curr->reqevents = event;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_poll_revents_get(apr_int16_t *event, apr_socket_t *sock, apr_pollfd_t *aprset)
{
apr_pollfd_t *curr = find_poll_sock(aprset, sock);
if (curr == NULL) {
return APR_NOTFOUND;
}
(*event) = curr->rtnevents;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_poll_socket_mask(apr_pollfd_t *aprset,
apr_socket_t *sock, apr_int16_t events)
{
apr_pollfd_t *curr = find_poll_sock(aprset, sock);
if (curr == NULL) {
return APR_NOTFOUND;
}
if (curr->reqevents & events) {
curr->reqevents ^= events;
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_poll_socket_remove(apr_pollfd_t *aprset, apr_socket_t *sock)
{
apr_pollfd_t *match = NULL;
apr_pollfd_t *curr;
for (curr = aprset; (curr->desc_type != APR_POLL_LASTDESC) &&
(curr->desc_type != APR_NO_DESC); curr++) {
if (curr->desc.s == sock) {
match = curr;
}
}
if (match == NULL) {
return APR_NOTFOUND;
}
/* Remove this entry by swapping the last entry into its place.
* This ensures that the non-APR_NO_DESC entries are all at the
* start of the array, so that apr_poll() doesn't have to worry
* about invalid entries in the middle of the pollset.
*/
curr--;
if (curr != match) {
*match = *curr;
}
curr->desc_type = APR_NO_DESC;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_poll_socket_clear(apr_pollfd_t *aprset, apr_int16_t events)
{
apr_pollfd_t *curr = aprset;
while (curr->desc_type != APR_POLL_LASTDESC) {
if (curr->reqevents & events) {
curr->reqevents &= ~events;
}
curr++;
}
return APR_SUCCESS;
}
#if APR_FILES_AS_SOCKETS
/* I'm not sure if this needs to return an apr_status_t or not, but
* for right now, we'll leave it this way, and change it later if
* necessary.
*/
APR_DECLARE(apr_status_t) apr_socket_from_file(apr_socket_t **newsock, apr_file_t *file)
{
(*newsock) = apr_pcalloc(file->pool, sizeof(**newsock));
(*newsock)->socketdes = file->filedes;
(*newsock)->cntxt = file->pool;
(*newsock)->timeout = file->timeout;
return APR_SUCCESS;
}
#endif
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