2 /* $NetBSD: citrus_mmap.c,v 1.4 2011/10/15 23:00:01 christos Exp $ */
5 * SPDX-License-Identifier: BSD-2-Clause
7 * Copyright (c)2003 Citrus Project,
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include "namespace.h"
33 #include <sys/cdefs.h>
35 #include <sys/types.h>
46 #include "un-namespace.h"
48 #include "citrus_namespace.h"
49 #include "citrus_region.h"
50 #include "citrus_mmap.h"
53 _citrus_map_file(struct _citrus_region * __restrict r,
54 const char * __restrict path)
62 _region_init(r, NULL, 0);
64 if ((fd = _open(path, O_RDONLY | O_CLOEXEC)) == -1)
67 if (_fstat(fd, &st) == -1) {
71 if (!S_ISREG(st.st_mode)) {
76 head = mmap(NULL, (size_t)st.st_size, PROT_READ, MAP_FILE|MAP_PRIVATE,
78 if (head == MAP_FAILED) {
82 _region_init(r, head, (size_t)st.st_size);
90 _citrus_unmap_file(struct _citrus_region *r)
93 if (_region_head(r) != NULL) {
94 (void)munmap(_region_head(r), _region_size(r));
95 _region_init(r, NULL, 0);