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/* ====================================================================
* Copyright (c) 2000 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Software Foundation
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Software Foundation
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE Apache Software Foundation ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE Apache Software Foundation OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation.
* For more information on the Apache Software Foundation and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
#include "mmap_h.h"
ap_status_t mmap_cleanup(void *themmap)
{
struct mmap_t *mm = themmap;
int rv;
rv = delete_area(mm->area);
if (rv == 0) {
mm->mm = 0;
mm->area = -1;
return APR_SUCCESS;
}
else
return errno;
}
ap_status_t ap_mmap_create(struct mmap_t **new, ap_file_t *file, ap_off_t offset, ap_size_t size,
ap_context_t *cont)
{
void *mm;
area_id aid = -1;
char *areaname = "apr_mmap\0";
uint32 pages = 0;
if (file == NULL || file->buffered || file->filedes == -1)
return APR_EBADF;
(*new) = (struct mmap_t *)ap_palloc(cont, sizeof(struct mmap_t));
pages = ((size -1) / B_PAGE_SIZE) + 1;
ap_seek(file, APR_SET, &offset);
aid = create_area(areaname, &mm , B_ANY_ADDRESS, pages * B_PAGE_SIZE,
B_FULL_LOCK, B_READ_AREA|B_WRITE_AREA);
if (aid < B_NO_ERROR) {
/* we failed to get an mmap'd file... */
return APR_ENOMEM;
}
if (aid >= B_NO_ERROR)
read(file->filedes, mm, size);
(*new)->mm = mm;
(*new)->size = size;
(*new)->area = aid;
(*new)->cntxt = cont;
/* register the cleanup... */
ap_register_cleanup((*new)->cntxt, (void*)(*new), mmap_cleanup,
ap_null_cleanup);
return APR_SUCCESS;
}
ap_status_t ap_mmap_delete(struct mmap_t *mmap)
{
ap_status_t rv;
if (mmap->area == -1)
return APR_ENOENT;
if ((rv = mmap_cleanup(mmap)) == APR_SUCCESS) {
ap_kill_cleanup(mmap->cntxt, mmap, mmap_cleanup);
return APR_SUCCESS;
}
return rv;
}
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