xref: /freebsd/lib/libc/posix1e/acl_init.c (revision 2de14c39b5bb20fc70ea555ac36fbe165857ac91)
1515d7c92SRobert Watson /*-
22de14c39SRobert Watson  * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
3515d7c92SRobert Watson  * All rights reserved.
4515d7c92SRobert Watson  *
5515d7c92SRobert Watson  * Redistribution and use in source and binary forms, with or without
6515d7c92SRobert Watson  * modification, are permitted provided that the following conditions
7515d7c92SRobert Watson  * are met:
8515d7c92SRobert Watson  * 1. Redistributions of source code must retain the above copyright
9515d7c92SRobert Watson  *    notice, this list of conditions and the following disclaimer.
10515d7c92SRobert Watson  * 2. Redistributions in binary form must reproduce the above copyright
11515d7c92SRobert Watson  *    notice, this list of conditions and the following disclaimer in the
12515d7c92SRobert Watson  *    documentation and/or other materials provided with the distribution.
13515d7c92SRobert Watson  *
14515d7c92SRobert Watson  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15515d7c92SRobert Watson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16515d7c92SRobert Watson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17515d7c92SRobert Watson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18515d7c92SRobert Watson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19515d7c92SRobert Watson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20515d7c92SRobert Watson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21515d7c92SRobert Watson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22515d7c92SRobert Watson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23515d7c92SRobert Watson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24515d7c92SRobert Watson  * SUCH DAMAGE.
25515d7c92SRobert Watson  *
26515d7c92SRobert Watson  * $FreeBSD$
27515d7c92SRobert Watson  */
28515d7c92SRobert Watson /*
29515d7c92SRobert Watson  * acl_init -- return a fresh acl structure
308f45e8c0SRobert Watson  * acl_dup -- duplicate an acl and return the new copy
31515d7c92SRobert Watson  */
32515d7c92SRobert Watson 
33515d7c92SRobert Watson #include <sys/types.h>
34515d7c92SRobert Watson #include <sys/acl.h>
35515d7c92SRobert Watson #include <errno.h>
36515d7c92SRobert Watson #include <stdlib.h>
37515d7c92SRobert Watson #include <string.h>
38515d7c92SRobert Watson 
39515d7c92SRobert Watson acl_t
40515d7c92SRobert Watson acl_init(int count)
41515d7c92SRobert Watson {
42515d7c92SRobert Watson 	struct acl	*acl;
43515d7c92SRobert Watson 
44d3352316SRobert Watson 	if (count > ACL_MAX_ENTRIES) {
45515d7c92SRobert Watson 		errno = ENOMEM;
46f0078215SRobert Watson 		return (NULL);
47515d7c92SRobert Watson 	}
48515d7c92SRobert Watson 
49515d7c92SRobert Watson 	acl = (struct acl *) malloc(sizeof(struct acl));
505db6984bSRobert Watson 	if (acl != NULL)
51515d7c92SRobert Watson 		bzero(acl, sizeof(struct acl));
52515d7c92SRobert Watson 
53515d7c92SRobert Watson 	return (acl);
54515d7c92SRobert Watson }
55515d7c92SRobert Watson 
568f45e8c0SRobert Watson acl_t
578f45e8c0SRobert Watson acl_dup(acl_t acl)
588f45e8c0SRobert Watson {
598f45e8c0SRobert Watson 	struct acl	*acl_new;
608f45e8c0SRobert Watson 
618f45e8c0SRobert Watson 	acl_new = acl_init(ACL_MAX_ENTRIES);
628f45e8c0SRobert Watson 	if (!acl_new)
638f45e8c0SRobert Watson 		return(NULL);
648f45e8c0SRobert Watson 
658f45e8c0SRobert Watson 	*acl_new = *acl;
668f45e8c0SRobert Watson 
678f45e8c0SRobert Watson 	return(acl_new);
688f45e8c0SRobert Watson }
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