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.
183 lines
6.2 KiB
C
183 lines
6.2 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_arch_file_io.h"
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#include "apr_strings.h"
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#include "apr_portable.h"
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#include "apr_thread_mutex.h"
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#include "apr_arch_inherit.h"
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static apr_status_t file_dup(apr_file_t **new_file,
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apr_file_t *old_file, apr_pool_t *p,
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int which_dup)
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{
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int rv;
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#ifdef HAVE_DUP3
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int flags = 0;
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#endif
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if (which_dup == 2) {
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if ((*new_file) == NULL) {
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/* We can't dup2 unless we have a valid new_file */
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return APR_EINVAL;
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}
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#ifdef HAVE_DUP3
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if (!((*new_file)->flags & (APR_FOPEN_NOCLEANUP|APR_INHERIT)))
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flags |= O_CLOEXEC;
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rv = dup3(old_file->filedes, (*new_file)->filedes, flags);
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#else
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rv = dup2(old_file->filedes, (*new_file)->filedes);
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if (!((*new_file)->flags & (APR_FOPEN_NOCLEANUP|APR_INHERIT))) {
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int flags;
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if (rv == -1)
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return errno;
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if ((flags = fcntl((*new_file)->filedes, F_GETFD)) == -1)
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return errno;
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flags |= FD_CLOEXEC;
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if (fcntl((*new_file)->filedes, F_SETFD, flags) == -1)
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return errno;
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}
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#endif
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} else {
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rv = dup(old_file->filedes);
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}
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if (rv == -1)
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return errno;
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if (which_dup == 1) {
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(*new_file) = (apr_file_t *)apr_pcalloc(p, sizeof(apr_file_t));
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(*new_file)->pool = p;
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(*new_file)->filedes = rv;
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}
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(*new_file)->fname = apr_pstrdup(p, old_file->fname);
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(*new_file)->buffered = old_file->buffered;
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/* If the existing socket in a dup2 is already buffered, we
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* have an existing and valid (hopefully) mutex, so we don't
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* want to create it again as we could leak!
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*/
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#if APR_HAS_THREADS
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if ((*new_file)->buffered && !(*new_file)->thlock && old_file->thlock) {
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apr_thread_mutex_create(&((*new_file)->thlock),
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APR_THREAD_MUTEX_DEFAULT, p);
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}
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#endif
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/* As above, only create the buffer if we haven't already
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* got one.
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*/
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if ((*new_file)->buffered && !(*new_file)->buffer) {
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(*new_file)->buffer = apr_palloc(p, old_file->bufsize);
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(*new_file)->bufsize = old_file->bufsize;
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}
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/* this is the way dup() works */
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(*new_file)->blocking = old_file->blocking;
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/* make sure unget behavior is consistent */
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(*new_file)->ungetchar = old_file->ungetchar;
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/* apr_file_dup2() retains the original cleanup, reflecting
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* the existing inherit and nocleanup flags. This means,
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* that apr_file_dup2() cannot be called against an apr_file_t
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* already closed with apr_file_close, because the expected
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* cleanup was already killed.
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*/
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if (which_dup == 2) {
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return APR_SUCCESS;
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}
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/* apr_file_dup() retains all old_file flags with the exceptions
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* of APR_INHERIT and APR_FOPEN_NOCLEANUP.
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* The user must call apr_file_inherit_set() on the dupped
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* apr_file_t when desired.
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*/
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(*new_file)->flags = old_file->flags
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& ~(APR_INHERIT | APR_FOPEN_NOCLEANUP);
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apr_pool_cleanup_register((*new_file)->pool, (void *)(*new_file),
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apr_unix_file_cleanup,
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apr_unix_child_file_cleanup);
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#ifndef WAITIO_USES_POLL
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/* Start out with no pollset. apr_wait_for_io_or_timeout() will
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* initialize the pollset if needed.
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*/
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(*new_file)->pollset = NULL;
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#endif
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_file_dup(apr_file_t **new_file,
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apr_file_t *old_file, apr_pool_t *p)
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{
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return file_dup(new_file, old_file, p, 1);
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}
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APR_DECLARE(apr_status_t) apr_file_dup2(apr_file_t *new_file,
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apr_file_t *old_file, apr_pool_t *p)
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{
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return file_dup(&new_file, old_file, p, 2);
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}
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APR_DECLARE(apr_status_t) apr_file_setaside(apr_file_t **new_file,
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apr_file_t *old_file,
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apr_pool_t *p)
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{
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*new_file = (apr_file_t *)apr_palloc(p, sizeof(apr_file_t));
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memcpy(*new_file, old_file, sizeof(apr_file_t));
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(*new_file)->pool = p;
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if (old_file->buffered) {
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(*new_file)->buffer = apr_palloc(p, old_file->bufsize);
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(*new_file)->bufsize = old_file->bufsize;
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if (old_file->direction == 1) {
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memcpy((*new_file)->buffer, old_file->buffer, old_file->bufpos);
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}
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else {
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memcpy((*new_file)->buffer, old_file->buffer, old_file->dataRead);
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}
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#if APR_HAS_THREADS
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if (old_file->thlock) {
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apr_thread_mutex_create(&((*new_file)->thlock),
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APR_THREAD_MUTEX_DEFAULT, p);
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apr_thread_mutex_destroy(old_file->thlock);
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}
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#endif /* APR_HAS_THREADS */
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}
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if (old_file->fname) {
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(*new_file)->fname = apr_pstrdup(p, old_file->fname);
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}
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if (!(old_file->flags & APR_FOPEN_NOCLEANUP)) {
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apr_pool_cleanup_register(p, (void *)(*new_file),
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apr_unix_file_cleanup,
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((*new_file)->flags & APR_INHERIT)
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? apr_pool_cleanup_null
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: apr_unix_child_file_cleanup);
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}
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old_file->filedes = -1;
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apr_pool_cleanup_kill(old_file->pool, (void *)old_file,
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apr_unix_file_cleanup);
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#ifndef WAITIO_USES_POLL
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(*new_file)->pollset = NULL;
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#endif
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return APR_SUCCESS;
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}
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