937a200089
This is actually a fully functional build except: * All internal shared libraries are static linked to make sure there is no interference with ports (and to reduce build time). * It does not have the python/perl/etc plugin or API support. * By default, it installs as "svnlite" rather than "svn". * If WITH_SVN added in make.conf, you get "svn". * If WITHOUT_SVNLITE is in make.conf, this is completely disabled. To be absolutely clear, this is not intended for any use other than checking out freebsd source and committing, like we once did with cvs. It should be usable for small scale local repositories that don't need the python/perl plugin architecture.
75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "apr_network_io.h"
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#include "apr_poll.h"
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APR_DECLARE(apr_status_t) apr_socket_atreadeof(apr_socket_t *sock, int *atreadeof)
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{
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apr_pollfd_t pfds[1];
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apr_status_t rv;
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apr_int32_t nfds;
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/* The purpose here is to return APR_SUCCESS only in cases in
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* which it can be unambiguously determined whether or not the
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* socket will return EOF on next read. In case of an unexpected
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* error, return that. */
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pfds[0].reqevents = APR_POLLIN;
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pfds[0].desc_type = APR_POLL_SOCKET;
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pfds[0].desc.s = sock;
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do {
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rv = apr_poll(&pfds[0], 1, &nfds, 0);
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} while (APR_STATUS_IS_EINTR(rv));
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if (APR_STATUS_IS_TIMEUP(rv)) {
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/* Read buffer empty -> subsequent reads would block, so,
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* definitely not at EOF. */
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*atreadeof = 0;
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return APR_SUCCESS;
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}
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else if (rv) {
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/* Some other error -> unexpected error. */
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return rv;
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}
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else if (nfds == 1 && pfds[0].rtnevents == APR_POLLIN) {
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apr_sockaddr_t unused;
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apr_size_t len = 1;
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char buf;
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/* The socket is readable - peek to see whether it returns EOF
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* without consuming bytes from the socket buffer. */
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rv = apr_socket_recvfrom(&unused, sock, MSG_PEEK, &buf, &len);
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if (rv == APR_EOF) {
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*atreadeof = 1;
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return APR_SUCCESS;
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}
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else if (rv) {
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/* Read error -> unexpected error. */
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return rv;
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}
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else {
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*atreadeof = 0;
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return APR_SUCCESS;
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}
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}
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/* Should not fall through here. */
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return APR_EGENERAL;
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}
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