1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2008, 2009 Edward Tomasz Napierała <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 #if 0
31 __FBSDID("$FreeBSD: head/lib/libc/posix1e/acl_flag.c 326193 2017-11-25 17:12:48Z pfg $");
32 #else
33 __RCSID("$NetBSD: acl_flag.c,v 1.1 2020/05/16 18:31:47 christos Exp $");
34 #endif
35
36 #include <stdio.h>
37 #include <errno.h>
38 #include <sys/acl.h>
39
40 #include "acl_support.h"
41
42 static int
_flag_is_invalid(acl_flag_t flag)43 _flag_is_invalid(acl_flag_t flag)
44 {
45
46 if ((flag & ACL_FLAGS_BITS) == flag)
47 return (0);
48
49 errno = EINVAL;
50
51 return (1);
52 }
53
54 int
acl_add_flag_np(acl_flagset_t flagset_d,acl_flag_t flag)55 acl_add_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
56 {
57
58 if (flagset_d == NULL) {
59 errno = EINVAL;
60 return (-1);
61 }
62
63 if (_flag_is_invalid(flag))
64 return (-1);
65
66 *flagset_d |= flag;
67
68 return (0);
69 }
70
71 int
acl_clear_flags_np(acl_flagset_t flagset_d)72 acl_clear_flags_np(acl_flagset_t flagset_d)
73 {
74
75 if (flagset_d == NULL) {
76 errno = EINVAL;
77 return (-1);
78 }
79
80 *flagset_d = 0;
81
82 return (0);
83 }
84
85 int
acl_delete_flag_np(acl_flagset_t flagset_d,acl_flag_t flag)86 acl_delete_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
87 {
88
89 if (flagset_d == NULL) {
90 errno = EINVAL;
91 return (-1);
92 }
93
94 if (_flag_is_invalid(flag))
95 return (-1);
96
97 *flagset_d &= ~flag;
98
99 return (0);
100 }
101
102 int
acl_get_flag_np(acl_flagset_t flagset_d,acl_flag_t flag)103 acl_get_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
104 {
105
106 if (flagset_d == NULL) {
107 errno = EINVAL;
108 return (-1);
109 }
110
111 if (_flag_is_invalid(flag))
112 return (-1);
113
114 if (*flagset_d & flag)
115 return (1);
116
117 return (0);
118 }
119
120 int
acl_get_flagset_np(acl_entry_t entry_d,acl_flagset_t * flagset_p)121 acl_get_flagset_np(acl_entry_t entry_d, acl_flagset_t *flagset_p)
122 {
123
124 if (entry_d == NULL || flagset_p == NULL) {
125 errno = EINVAL;
126 return (-1);
127 }
128
129 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
130 errno = EINVAL;
131 return (-1);
132 }
133
134 *flagset_p = &entry_d->ae_flags;
135
136 return (0);
137 }
138
139 int
acl_set_flagset_np(acl_entry_t entry_d,acl_flagset_t flagset_d)140 acl_set_flagset_np(acl_entry_t entry_d, acl_flagset_t flagset_d)
141 {
142
143 if (entry_d == NULL) {
144 errno = EINVAL;
145 return (-1);
146 }
147
148 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
149 errno = EINVAL;
150 return (-1);
151 }
152
153 _entry_brand_as(entry_d, ACL_BRAND_NFS4);
154
155 if (_flag_is_invalid(*flagset_d))
156 return (-1);
157
158 entry_d->ae_flags = *flagset_d;
159
160 return (0);
161 }
162