xref: /freebsd/lib/libc/posix1e/acl_init.c (revision 0f6263079e626b2fababe9cc131b589d1ecb3337)
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>
347bd44e92SThomas Moestl #include "namespace.h"
35515d7c92SRobert Watson #include <sys/acl.h>
367bd44e92SThomas Moestl #include "un-namespace.h"
37515d7c92SRobert Watson #include <errno.h>
38515d7c92SRobert Watson #include <stdlib.h>
39515d7c92SRobert Watson #include <string.h>
40515d7c92SRobert Watson 
41515d7c92SRobert Watson acl_t
42515d7c92SRobert Watson acl_init(int count)
43515d7c92SRobert Watson {
440f626307SChris D. Faulhaber 	acl_t acl;
45515d7c92SRobert Watson 
46d3352316SRobert Watson 	if (count > ACL_MAX_ENTRIES) {
47515d7c92SRobert Watson 		errno = ENOMEM;
48f0078215SRobert Watson 		return (NULL);
49515d7c92SRobert Watson 	}
500f626307SChris D. Faulhaber 	if (count < 0) {
510f626307SChris D. Faulhaber 		errno = EINVAL;
520f626307SChris D. Faulhaber 		return (NULL);
530f626307SChris D. Faulhaber 	}
54515d7c92SRobert Watson 
550f626307SChris D. Faulhaber 	acl = malloc(sizeof(struct acl_t_struct));
565db6984bSRobert Watson 	if (acl != NULL)
570f626307SChris D. Faulhaber 		bzero(acl, sizeof(struct acl_t_struct));
58515d7c92SRobert Watson 
59515d7c92SRobert Watson 	return (acl);
60515d7c92SRobert Watson }
61515d7c92SRobert Watson 
628f45e8c0SRobert Watson acl_t
638f45e8c0SRobert Watson acl_dup(acl_t acl)
648f45e8c0SRobert Watson {
650f626307SChris D. Faulhaber 	acl_t	acl_new;
668f45e8c0SRobert Watson 
678f45e8c0SRobert Watson 	acl_new = acl_init(ACL_MAX_ENTRIES);
688f45e8c0SRobert Watson 	if (!acl_new)
690f626307SChris D. Faulhaber 		return NULL;
708f45e8c0SRobert Watson 	*acl_new = *acl;
710f626307SChris D. Faulhaber 	acl->ats_cur_entry = 0;
720f626307SChris D. Faulhaber 	acl_new->ats_cur_entry = 0;
738f45e8c0SRobert Watson 
748f45e8c0SRobert Watson 	return(acl_new);
758f45e8c0SRobert Watson }
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