145203ddbSJohn Marino /* $FreeBSD: head/lib/libc/iconv/citrus_mmap.c 263986 2014-04-01 10:36:11Z tijl $ */
245203ddbSJohn Marino /* $NetBSD: citrus_mmap.c,v 1.4 2011/10/15 23:00:01 christos Exp $ */
32180e8afSJoerg Sonnenberger
42180e8afSJoerg Sonnenberger /*-
52180e8afSJoerg Sonnenberger * Copyright (c)2003 Citrus Project,
62180e8afSJoerg Sonnenberger * All rights reserved.
72180e8afSJoerg Sonnenberger *
82180e8afSJoerg Sonnenberger * Redistribution and use in source and binary forms, with or without
92180e8afSJoerg Sonnenberger * modification, are permitted provided that the following conditions
102180e8afSJoerg Sonnenberger * are met:
112180e8afSJoerg Sonnenberger * 1. Redistributions of source code must retain the above copyright
122180e8afSJoerg Sonnenberger * notice, this list of conditions and the following disclaimer.
132180e8afSJoerg Sonnenberger * 2. Redistributions in binary form must reproduce the above copyright
142180e8afSJoerg Sonnenberger * notice, this list of conditions and the following disclaimer in the
152180e8afSJoerg Sonnenberger * documentation and/or other materials provided with the distribution.
162180e8afSJoerg Sonnenberger *
172180e8afSJoerg Sonnenberger * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
182180e8afSJoerg Sonnenberger * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
192180e8afSJoerg Sonnenberger * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
202180e8afSJoerg Sonnenberger * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
212180e8afSJoerg Sonnenberger * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
222180e8afSJoerg Sonnenberger * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
232180e8afSJoerg Sonnenberger * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
242180e8afSJoerg Sonnenberger * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
252180e8afSJoerg Sonnenberger * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
262180e8afSJoerg Sonnenberger * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
272180e8afSJoerg Sonnenberger * SUCH DAMAGE.
282180e8afSJoerg Sonnenberger */
292180e8afSJoerg Sonnenberger
30*806a5ed7SSascha Wildner #include "namespace.h"
310d5acd74SJohn Marino #include <sys/cdefs.h>
322180e8afSJoerg Sonnenberger #include <sys/mman.h>
330d5acd74SJohn Marino #include <sys/types.h>
342180e8afSJoerg Sonnenberger #include <sys/stat.h>
350d5acd74SJohn Marino
362180e8afSJoerg Sonnenberger #include <assert.h>
372180e8afSJoerg Sonnenberger #include <errno.h>
382180e8afSJoerg Sonnenberger #include <fcntl.h>
392180e8afSJoerg Sonnenberger #include <limits.h>
402180e8afSJoerg Sonnenberger #include <stdio.h>
412180e8afSJoerg Sonnenberger #include <stdlib.h>
422180e8afSJoerg Sonnenberger #include <string.h>
432180e8afSJoerg Sonnenberger #include <unistd.h>
44*806a5ed7SSascha Wildner #include "un-namespace.h"
452180e8afSJoerg Sonnenberger
462180e8afSJoerg Sonnenberger #include "citrus_namespace.h"
472180e8afSJoerg Sonnenberger #include "citrus_region.h"
482180e8afSJoerg Sonnenberger #include "citrus_mmap.h"
492180e8afSJoerg Sonnenberger
502180e8afSJoerg Sonnenberger int
_citrus_map_file(struct _citrus_region * __restrict r,const char * __restrict path)512180e8afSJoerg Sonnenberger _citrus_map_file(struct _citrus_region * __restrict r,
522180e8afSJoerg Sonnenberger const char * __restrict path)
532180e8afSJoerg Sonnenberger {
542180e8afSJoerg Sonnenberger struct stat st;
552180e8afSJoerg Sonnenberger void *head;
560d5acd74SJohn Marino int fd, ret;
572180e8afSJoerg Sonnenberger
580d5acd74SJohn Marino ret = 0;
592180e8afSJoerg Sonnenberger
602180e8afSJoerg Sonnenberger _region_init(r, NULL, 0);
612180e8afSJoerg Sonnenberger
62*806a5ed7SSascha Wildner if ((fd = _open(path, O_RDONLY | O_CLOEXEC)) == -1)
630d5acd74SJohn Marino return (errno);
642180e8afSJoerg Sonnenberger
65*806a5ed7SSascha Wildner if (_fstat(fd, &st) == -1) {
662180e8afSJoerg Sonnenberger ret = errno;
672180e8afSJoerg Sonnenberger goto error;
682180e8afSJoerg Sonnenberger }
692180e8afSJoerg Sonnenberger if (!S_ISREG(st.st_mode)) {
702180e8afSJoerg Sonnenberger ret = EOPNOTSUPP;
712180e8afSJoerg Sonnenberger goto error;
722180e8afSJoerg Sonnenberger }
732180e8afSJoerg Sonnenberger
742180e8afSJoerg Sonnenberger head = mmap(NULL, (size_t)st.st_size, PROT_READ, MAP_FILE|MAP_PRIVATE,
752180e8afSJoerg Sonnenberger fd, (off_t)0);
762180e8afSJoerg Sonnenberger if (head == MAP_FAILED) {
772180e8afSJoerg Sonnenberger ret = errno;
782180e8afSJoerg Sonnenberger goto error;
792180e8afSJoerg Sonnenberger }
802180e8afSJoerg Sonnenberger _region_init(r, head, (size_t)st.st_size);
812180e8afSJoerg Sonnenberger
822180e8afSJoerg Sonnenberger error:
83*806a5ed7SSascha Wildner (void)_close(fd);
840d5acd74SJohn Marino return (ret);
852180e8afSJoerg Sonnenberger }
862180e8afSJoerg Sonnenberger
872180e8afSJoerg Sonnenberger void
_citrus_unmap_file(struct _citrus_region * r)882180e8afSJoerg Sonnenberger _citrus_unmap_file(struct _citrus_region *r)
892180e8afSJoerg Sonnenberger {
902180e8afSJoerg Sonnenberger
912180e8afSJoerg Sonnenberger if (_region_head(r) != NULL) {
920d5acd74SJohn Marino (void)munmap(_region_head(r), _region_size(r));
932180e8afSJoerg Sonnenberger _region_init(r, NULL, 0);
942180e8afSJoerg Sonnenberger }
952180e8afSJoerg Sonnenberger }
96