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