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.
173 lines
4.7 KiB
C
173 lines
4.7 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.h"
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#include "apr_private.h"
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#include "apr_general.h"
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#include "apr_strings.h"
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#include "apr_mmap.h"
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#include "apr_errno.h"
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#include "apr_arch_file_io.h"
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#include "apr_portable.h"
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/* System headers required for the mmap library */
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#ifdef BEOS
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#include <kernel/OS.h>
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#endif
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#if APR_HAVE_STRING_H
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#include <string.h>
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#endif
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#if APR_HAVE_STDIO_H
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#include <stdio.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#if APR_HAS_MMAP || defined(BEOS)
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static apr_status_t mmap_cleanup(void *themmap)
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{
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apr_mmap_t *mm = themmap;
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apr_mmap_t *next = APR_RING_NEXT(mm,link);
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int rv = 0;
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/* we no longer refer to the mmaped region */
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APR_RING_REMOVE(mm,link);
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APR_RING_NEXT(mm,link) = NULL;
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APR_RING_PREV(mm,link) = NULL;
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if (next != mm) {
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/* more references exist, so we're done */
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return APR_SUCCESS;
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}
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#ifdef BEOS
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rv = delete_area(mm->area);
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#else
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rv = munmap(mm->mm, mm->size);
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#endif
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mm->mm = (void *)-1;
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if (rv == 0) {
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return APR_SUCCESS;
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}
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return errno;
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}
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APR_DECLARE(apr_status_t) apr_mmap_create(apr_mmap_t **new,
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apr_file_t *file, apr_off_t offset,
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apr_size_t size, apr_int32_t flag,
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apr_pool_t *cont)
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{
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void *mm;
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#ifdef BEOS
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area_id aid = -1;
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uint32 pages = 0;
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#else
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apr_int32_t native_flags = 0;
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#endif
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#if APR_HAS_LARGE_FILES && defined(HAVE_MMAP64)
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#define mmap mmap64
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#elif APR_HAS_LARGE_FILES && SIZEOF_OFF_T == 4
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/* LFS but no mmap64: check for overflow */
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if ((apr_int64_t)offset + size > INT_MAX)
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return APR_EINVAL;
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#endif
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if (size == 0)
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return APR_EINVAL;
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if (file == NULL || file->filedes == -1 || file->buffered)
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return APR_EBADF;
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(*new) = (apr_mmap_t *)apr_pcalloc(cont, sizeof(apr_mmap_t));
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#ifdef BEOS
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/* XXX: mmap shouldn't really change the seek offset */
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apr_file_seek(file, APR_SET, &offset);
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/* There seems to be some strange interactions that mean our area must
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* be set as READ & WRITE or writev will fail! Go figure...
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* So we ignore the value in flags and always ask for both READ and WRITE
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*/
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pages = (size + B_PAGE_SIZE -1) / B_PAGE_SIZE;
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aid = create_area("apr_mmap", &mm , B_ANY_ADDRESS, pages * B_PAGE_SIZE,
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B_NO_LOCK, B_WRITE_AREA|B_READ_AREA);
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if (aid < B_NO_ERROR) {
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/* we failed to get an area we can use... */
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*new = NULL;
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return APR_ENOMEM;
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}
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if (aid >= B_NO_ERROR)
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read(file->filedes, mm, size);
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(*new)->area = aid;
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#else
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if (flag & APR_MMAP_WRITE) {
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native_flags |= PROT_WRITE;
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}
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if (flag & APR_MMAP_READ) {
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native_flags |= PROT_READ;
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}
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mm = mmap(NULL, size, native_flags, MAP_SHARED, file->filedes, offset);
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if (mm == (void *)-1) {
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/* we failed to get an mmap'd file... */
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*new = NULL;
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return errno;
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}
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#endif
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(*new)->mm = mm;
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(*new)->size = size;
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(*new)->cntxt = cont;
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APR_RING_ELEM_INIT(*new, link);
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/* register the cleanup... */
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apr_pool_cleanup_register((*new)->cntxt, (void*)(*new), mmap_cleanup,
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apr_pool_cleanup_null);
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_mmap_dup(apr_mmap_t **new_mmap,
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apr_mmap_t *old_mmap,
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apr_pool_t *p)
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{
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*new_mmap = (apr_mmap_t *)apr_pmemdup(p, old_mmap, sizeof(apr_mmap_t));
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(*new_mmap)->cntxt = p;
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APR_RING_INSERT_AFTER(old_mmap, *new_mmap, link);
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apr_pool_cleanup_register(p, *new_mmap, mmap_cleanup,
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apr_pool_cleanup_null);
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_mmap_delete(apr_mmap_t *mm)
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{
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return apr_pool_cleanup_run(mm->cntxt, mm, mmap_cleanup);
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}
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#endif
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