1
/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
4
* Licensed under the Apache License, Version 2.0 (the "License");
5
* you may not use this file except in compliance with the License.
6
* You may obtain a copy of the License at
8
* http://www.apache.org/licenses/LICENSE-2.0
10
* Unless required by applicable law or agreed to in writing, software
11
* distributed under the License is distributed on an "AS IS" BASIS,
12
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13
* See the License for the specific language governing permissions and
14
* limitations under the License.
17
#include "apr_buckets.h"
21
static apr_status_t mmap_bucket_read(apr_bucket *b, const char **str,
22
apr_size_t *length, apr_read_type_e block)
24
apr_bucket_mmap *m = b->data;
29
/* the apr_mmap_t was already cleaned up out from under us */
33
ok = apr_mmap_offset(&addr, m->mmap, b->start);
34
if (ok != APR_SUCCESS) {
42
static apr_status_t mmap_bucket_cleanup(void *data)
44
/* the apr_mmap_t is about to disappear out from under us, so we
45
* have no choice but to pretend it doesn't exist anymore. the
46
* refcount is now useless because there's nothing to refer to
47
* anymore. so the only valid action on any remaining referrer
48
* is to delete it. no more reads, no more anything. */
49
apr_bucket_mmap *m = data;
55
static void mmap_bucket_destroy(void *data)
57
apr_bucket_mmap *m = data;
59
if (apr_bucket_shared_destroy(m)) {
61
apr_pool_cleanup_kill(m->mmap->cntxt, m, mmap_bucket_cleanup);
62
apr_mmap_delete(m->mmap);
69
* XXX: are the start and length arguments useful?
71
APU_DECLARE(apr_bucket *) apr_bucket_mmap_make(apr_bucket *b, apr_mmap_t *mm,
77
m = apr_bucket_alloc(sizeof(*m), b->list);
80
apr_pool_cleanup_register(mm->cntxt, m, mmap_bucket_cleanup,
81
apr_pool_cleanup_null);
83
b = apr_bucket_shared_make(b, m, start, length);
84
b->type = &apr_bucket_type_mmap;
90
APU_DECLARE(apr_bucket *) apr_bucket_mmap_create(apr_mmap_t *mm,
93
apr_bucket_alloc_t *list)
95
apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
98
b->free = apr_bucket_free;
100
return apr_bucket_mmap_make(b, mm, start, length);
103
static apr_status_t mmap_bucket_setaside(apr_bucket *b, apr_pool_t *p)
105
apr_bucket_mmap *m = b->data;
106
apr_mmap_t *mm = m->mmap;
111
/* the apr_mmap_t was already cleaned up out from under us */
115
/* shortcut if possible */
116
if (apr_pool_is_ancestor(mm->cntxt, p)) {
120
/* duplicate apr_mmap_t into new pool */
121
/* XXX: the transfer_ownership flag on this call
122
* will go away soon.. it's ignored right now. */
123
ok = apr_mmap_dup(&new_mm, mm, p, 1);
124
if (ok != APR_SUCCESS) {
128
/* decrement refcount on old apr_bucket_mmap */
129
mmap_bucket_destroy(m);
131
/* create new apr_bucket_mmap pointing to new apr_mmap_t */
132
apr_bucket_mmap_make(b, new_mm, b->start, b->length);
137
APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_mmap = {
138
"MMAP", 5, APR_BUCKET_DATA,
141
mmap_bucket_setaside,
142
apr_bucket_shared_split,
143
apr_bucket_shared_copy