1 /*-
2 * Copyright (c) 2008, 2009 Edward Tomasz Napierała <trasz@FreeBSD.org>
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <stdio.h>
31 #include <errno.h>
32 #include <sys/acl.h>
33
34 #include "acl_support.h"
35
36 static int
_flag_is_invalid(acl_flag_t flag)37 _flag_is_invalid(acl_flag_t flag)
38 {
39
40 if ((flag & ACL_FLAGS_BITS) == flag)
41 return (0);
42
43 errno = EINVAL;
44
45 return (1);
46 }
47
48 int
acl_add_flag_np(acl_flagset_t flagset_d,acl_flag_t flag)49 acl_add_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
50 {
51
52 if (flagset_d == NULL) {
53 errno = EINVAL;
54 return (-1);
55 }
56
57 if (_flag_is_invalid(flag))
58 return (-1);
59
60 *flagset_d |= flag;
61
62 return (0);
63 }
64
65 int
acl_clear_flags_np(acl_flagset_t flagset_d)66 acl_clear_flags_np(acl_flagset_t flagset_d)
67 {
68
69 if (flagset_d == NULL) {
70 errno = EINVAL;
71 return (-1);
72 }
73
74 *flagset_d |= 0;
75
76 return (0);
77 }
78
79 int
acl_delete_flag_np(acl_flagset_t flagset_d,acl_flag_t flag)80 acl_delete_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
81 {
82
83 if (flagset_d == NULL) {
84 errno = EINVAL;
85 return (-1);
86 }
87
88 if (_flag_is_invalid(flag))
89 return (-1);
90
91 *flagset_d &= ~flag;
92
93 return (0);
94 }
95
96 int
acl_get_flag_np(acl_flagset_t flagset_d,acl_flag_t flag)97 acl_get_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
98 {
99
100 if (flagset_d == NULL) {
101 errno = EINVAL;
102 return (-1);
103 }
104
105 if (_flag_is_invalid(flag))
106 return (-1);
107
108 if (*flagset_d & flag)
109 return (1);
110
111 return (0);
112 }
113
114 int
acl_get_flagset_np(acl_entry_t entry_d,acl_flagset_t * flagset_p)115 acl_get_flagset_np(acl_entry_t entry_d, acl_flagset_t *flagset_p)
116 {
117
118 if (entry_d == NULL || flagset_p == NULL) {
119 errno = EINVAL;
120 return (-1);
121 }
122
123 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
124 errno = EINVAL;
125 return (-1);
126 }
127
128 *flagset_p = &entry_d->ae_flags;
129
130 return (0);
131 }
132
133 int
acl_set_flagset_np(acl_entry_t entry_d,acl_flagset_t flagset_d)134 acl_set_flagset_np(acl_entry_t entry_d, acl_flagset_t flagset_d)
135 {
136
137 if (entry_d == NULL) {
138 errno = EINVAL;
139 return (-1);
140 }
141
142 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
143 errno = EINVAL;
144 return (-1);
145 }
146
147 _entry_brand_as(entry_d, ACL_BRAND_NFS4);
148
149 if (_flag_is_invalid(*flagset_d))
150 return (-1);
151
152 entry_d->ae_flags = *flagset_d;
153
154 return (0);
155 }
156