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.
145 lines
4.1 KiB
C
145 lines
4.1 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_buckets.h"
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#if APR_HAS_MMAP
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static apr_status_t mmap_bucket_read(apr_bucket *b, const char **str,
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apr_size_t *length, apr_read_type_e block)
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{
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apr_bucket_mmap *m = b->data;
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apr_status_t ok;
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void *addr;
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if (!m->mmap) {
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/* the apr_mmap_t was already cleaned up out from under us */
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return APR_EINVAL;
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}
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ok = apr_mmap_offset(&addr, m->mmap, b->start);
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if (ok != APR_SUCCESS) {
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return ok;
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}
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*str = addr;
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*length = b->length;
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return APR_SUCCESS;
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}
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static apr_status_t mmap_bucket_cleanup(void *data)
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{
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/* the apr_mmap_t is about to disappear out from under us, so we
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* have no choice but to pretend it doesn't exist anymore. the
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* refcount is now useless because there's nothing to refer to
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* anymore. so the only valid action on any remaining referrer
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* is to delete it. no more reads, no more anything. */
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apr_bucket_mmap *m = data;
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m->mmap = NULL;
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return APR_SUCCESS;
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}
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static void mmap_bucket_destroy(void *data)
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{
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apr_bucket_mmap *m = data;
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if (apr_bucket_shared_destroy(m)) {
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if (m->mmap) {
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apr_pool_cleanup_kill(m->mmap->cntxt, m, mmap_bucket_cleanup);
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apr_mmap_delete(m->mmap);
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}
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apr_bucket_free(m);
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}
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}
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/*
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* XXX: are the start and length arguments useful?
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*/
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APU_DECLARE(apr_bucket *) apr_bucket_mmap_make(apr_bucket *b, apr_mmap_t *mm,
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apr_off_t start,
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apr_size_t length)
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{
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apr_bucket_mmap *m;
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m = apr_bucket_alloc(sizeof(*m), b->list);
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m->mmap = mm;
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apr_pool_cleanup_register(mm->cntxt, m, mmap_bucket_cleanup,
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apr_pool_cleanup_null);
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b = apr_bucket_shared_make(b, m, start, length);
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b->type = &apr_bucket_type_mmap;
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return b;
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}
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APU_DECLARE(apr_bucket *) apr_bucket_mmap_create(apr_mmap_t *mm,
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apr_off_t start,
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apr_size_t length,
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apr_bucket_alloc_t *list)
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{
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apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
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APR_BUCKET_INIT(b);
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b->free = apr_bucket_free;
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b->list = list;
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return apr_bucket_mmap_make(b, mm, start, length);
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}
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static apr_status_t mmap_bucket_setaside(apr_bucket *b, apr_pool_t *p)
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{
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apr_bucket_mmap *m = b->data;
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apr_mmap_t *mm = m->mmap;
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apr_mmap_t *new_mm;
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apr_status_t ok;
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if (!mm) {
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/* the apr_mmap_t was already cleaned up out from under us */
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return APR_EINVAL;
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}
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/* shortcut if possible */
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if (apr_pool_is_ancestor(mm->cntxt, p)) {
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return APR_SUCCESS;
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}
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/* duplicate apr_mmap_t into new pool */
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ok = apr_mmap_dup(&new_mm, mm, p);
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if (ok != APR_SUCCESS) {
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return ok;
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}
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/* decrement refcount on old apr_bucket_mmap */
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mmap_bucket_destroy(m);
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/* create new apr_bucket_mmap pointing to new apr_mmap_t */
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apr_bucket_mmap_make(b, new_mm, b->start, b->length);
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return APR_SUCCESS;
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}
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APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_mmap = {
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"MMAP", 5, APR_BUCKET_DATA,
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mmap_bucket_destroy,
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mmap_bucket_read,
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mmap_bucket_setaside,
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apr_bucket_shared_split,
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apr_bucket_shared_copy
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};
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#endif
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