acl_flag.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2008, 2009 Edward Tomasz Napiera��a <trasz@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/lib/libc/posix1e/acl_flag.c 330897 2018-03-14 03:19:51Z eadler $");
31
32#include <stdio.h>
33#include <errno.h>
34#include <sys/acl.h>
35
36#include "acl_support.h"
37
38static int
39_flag_is_invalid(acl_flag_t flag)
40{
41
42	if ((flag & ACL_FLAGS_BITS) == flag)
43		return (0);
44
45	errno = EINVAL;
46
47	return (1);
48}
49
50int
51acl_add_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
52{
53
54	if (flagset_d == NULL) {
55		errno = EINVAL;
56		return (-1);
57	}
58
59	if (_flag_is_invalid(flag))
60		return (-1);
61
62	*flagset_d |= flag;
63
64	return (0);
65}
66
67int
68acl_clear_flags_np(acl_flagset_t flagset_d)
69{
70
71	if (flagset_d == NULL) {
72		errno = EINVAL;
73		return (-1);
74	}
75
76	*flagset_d = 0;
77
78	return (0);
79}
80
81int
82acl_delete_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
83{
84
85	if (flagset_d == NULL) {
86		errno = EINVAL;
87		return (-1);
88	}
89
90	if (_flag_is_invalid(flag))
91		return (-1);
92
93	*flagset_d &= ~flag;
94
95	return (0);
96}
97
98int
99acl_get_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
100{
101
102	if (flagset_d == NULL) {
103		errno = EINVAL;
104		return (-1);
105	}
106
107	if (_flag_is_invalid(flag))
108		return (-1);
109
110	if (*flagset_d & flag)
111		return (1);
112
113	return (0);
114}
115
116int
117acl_get_flagset_np(acl_entry_t entry_d, acl_flagset_t *flagset_p)
118{
119
120	if (entry_d == NULL || flagset_p == NULL) {
121		errno = EINVAL;
122		return (-1);
123	}
124
125	if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
126		errno = EINVAL;
127		return (-1);
128	}
129
130	*flagset_p = &entry_d->ae_flags;
131
132	return (0);
133}
134
135int
136acl_set_flagset_np(acl_entry_t entry_d, acl_flagset_t flagset_d)
137{
138
139	if (entry_d == NULL) {
140		errno = EINVAL;
141		return (-1);
142	}
143
144	if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
145		errno = EINVAL;
146		return (-1);
147	}
148
149	_entry_brand_as(entry_d, ACL_BRAND_NFS4);
150
151	if (_flag_is_invalid(*flagset_d))
152		return (-1);
153
154	entry_d->ae_flags = *flagset_d;
155
156	return (0);
157}
158