2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * acl_init -- return a fresh acl structure
30 * acl_dup -- duplicate an acl and return the new copy
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/types.h>
37 #include "namespace.h"
39 #include "un-namespace.h"
45 #include "acl_support.h"
48 #define CTASSERT(x) _CTASSERT(x, __LINE__)
49 #define _CTASSERT(x, y) __CTASSERT(x, y)
50 #define __CTASSERT(x, y) typedef char __assert_ ## y [(x) ? 1 : -1]
53 CTASSERT(1 << _ACL_T_ALIGNMENT_BITS > sizeof(struct acl_t_struct));
61 if (count > ACL_MAX_ENTRIES) {
70 error = posix_memalign((void *)&acl, 1 << _ACL_T_ALIGNMENT_BITS,
71 sizeof(struct acl_t_struct));
77 bzero(acl, sizeof(struct acl_t_struct));
78 acl->ats_brand = ACL_BRAND_UNKNOWN;
79 acl->ats_acl.acl_maxcnt = ACL_MAX_ENTRIES;
89 acl_new = acl_init(ACL_MAX_ENTRIES);
90 if (acl_new != NULL) {
92 acl->ats_cur_entry = 0;
93 acl_new->ats_cur_entry = 0;