acl_init.c revision 75185 
1/*-
2 * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/lib/libc/posix1e/acl_init.c 75185 2001-04-04 18:00:52Z tmm $
27 */
28/*
29 * acl_init -- return a fresh acl structure
30 * acl_dup -- duplicate an acl and return the new copy
31 */
32
33#include <sys/types.h>
34#include "namespace.h"
35#include <sys/acl.h>
36#include "un-namespace.h"
37#include <errno.h>
38#include <stdlib.h>
39#include <string.h>
40
41acl_t
42acl_init(int count)
43{
44	struct acl	*acl;
45
46	if (count > ACL_MAX_ENTRIES) {
47		errno = ENOMEM;
48		return (NULL);
49	}
50
51	acl = (struct acl *) malloc(sizeof(struct acl));
52	if (acl != NULL)
53		bzero(acl, sizeof(struct acl));
54
55	return (acl);
56}
57
58acl_t
59acl_dup(acl_t acl)
60{
61	struct acl	*acl_new;
62
63	acl_new = acl_init(ACL_MAX_ENTRIES);
64	if (!acl_new)
65		return(NULL);
66
67	*acl_new = *acl;
68
69	return(acl_new);
70}
71