1 /* $NetBSD: src/lib/libc/citrus/citrus_mmap.c,v 1.3 2005/01/19 00:52:37 mycroft Exp $ */
2 /* $DragonFly: src/lib/libc/citrus/citrus_mmap.c,v 1.3 2008/04/10 10:21:01 hasso Exp $ */
5 * Copyright (c)2003 Citrus Project,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/types.h>
42 #include "citrus_namespace.h"
43 #include "citrus_region.h"
44 #include "citrus_mmap.h"
47 _citrus_map_file(struct _citrus_region
* __restrict r
,
48 const char * __restrict path
)
54 _DIAGASSERT(r
!= NULL
);
56 _region_init(r
, NULL
, 0);
58 if ((fd
= open(path
, O_RDONLY
)) == -1)
60 if (fcntl(fd
, F_SETFD
, FD_CLOEXEC
) == -1) {
65 if (fstat(fd
, &st
) == -1) {
69 if (!S_ISREG(st
.st_mode
)) {
74 head
= mmap(NULL
, (size_t)st
.st_size
, PROT_READ
, MAP_FILE
|MAP_PRIVATE
,
76 if (head
== MAP_FAILED
) {
80 _region_init(r
, head
, (size_t)st
.st_size
);
88 _citrus_unmap_file(struct _citrus_region
*r
)
90 _DIAGASSERT(r
!= NULL
);
92 if (_region_head(r
) != NULL
) {
93 munmap(_region_head(r
), _region_size(r
));
94 _region_init(r
, NULL
, 0);