xref: /freebsd/lib/libc/posix1e/acl_init.c (revision 7bd44e92236dee951d8c692333f2508155592550)
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  * $FreeBSD$
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 
41 acl_t
42 acl_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 
58 acl_t
59 acl_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