1 | /* |
2 | * Copyright (c) 2007 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | /*- |
30 | * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson |
31 | * Copyright (c) 2001 Ilmar S. Habibulin |
32 | * Copyright (c) 2001, 2002, 2003, 2004 Networks Associates Technology, Inc. |
33 | * |
34 | * This software was developed by Robert Watson and Ilmar Habibulin for the |
35 | * TrustedBSD Project. |
36 | * |
37 | * This software was developed for the FreeBSD Project in part by Network |
38 | * Associates Laboratories, the Security Research Division of Network |
39 | * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), |
40 | * as part of the DARPA CHATS research program. |
41 | * |
42 | * Redistribution and use in source and binary forms, with or without |
43 | * modification, are permitted provided that the following conditions |
44 | * are met: |
45 | * 1. Redistributions of source code must retain the above copyright |
46 | * notice, this list of conditions and the following disclaimer. |
47 | * 2. Redistributions in binary form must reproduce the above copyright |
48 | * notice, this list of conditions and the following disclaimer in the |
49 | * documentation and/or other materials provided with the distribution. |
50 | * |
51 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
52 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
53 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
54 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
55 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
56 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
57 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
58 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
59 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
60 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
61 | * SUCH DAMAGE. |
62 | * |
63 | */ |
64 | |
65 | #include <sys/param.h> |
66 | #include <sys/vnode.h> |
67 | #include <sys/vnode_internal.h> |
68 | |
69 | #include <security/mac_internal.h> |
70 | |
71 | |
72 | int |
73 | mac_system_check_acct(kauth_cred_t cred, struct vnode *vp) |
74 | { |
75 | int error; |
76 | |
77 | #if SECURITY_MAC_CHECK_ENFORCE |
78 | /* 21167099 - only check if we allow write */ |
79 | if (!mac_system_enforce) { |
80 | return 0; |
81 | } |
82 | #endif |
83 | |
84 | MAC_CHECK(system_check_acct, cred, vp, |
85 | vp != NULL ? mac_vnode_label(vp) : NULL); |
86 | |
87 | return error; |
88 | } |
89 | |
90 | int |
91 | mac_system_check_host_priv(kauth_cred_t cred) |
92 | { |
93 | int error; |
94 | |
95 | #if SECURITY_MAC_CHECK_ENFORCE |
96 | /* 21167099 - only check if we allow write */ |
97 | if (!mac_system_enforce) { |
98 | return 0; |
99 | } |
100 | #endif |
101 | |
102 | MAC_CHECK(system_check_host_priv, cred); |
103 | |
104 | return error; |
105 | } |
106 | |
107 | int |
108 | mac_system_check_info(kauth_cred_t cred, const char *info_type) |
109 | { |
110 | int error; |
111 | |
112 | #if SECURITY_MAC_CHECK_ENFORCE |
113 | /* 21167099 - only check if we allow write */ |
114 | if (!mac_system_enforce) { |
115 | return 0; |
116 | } |
117 | #endif |
118 | |
119 | MAC_CHECK(system_check_info, cred, info_type); |
120 | |
121 | return error; |
122 | } |
123 | |
124 | int |
125 | mac_system_check_nfsd(kauth_cred_t cred) |
126 | { |
127 | int error; |
128 | |
129 | #if SECURITY_MAC_CHECK_ENFORCE |
130 | /* 21167099 - only check if we allow write */ |
131 | if (!mac_system_enforce) { |
132 | return 0; |
133 | } |
134 | #endif |
135 | |
136 | MAC_CHECK(system_check_nfsd, cred); |
137 | |
138 | return error; |
139 | } |
140 | |
141 | int |
142 | mac_system_check_reboot(kauth_cred_t cred, int howto) |
143 | { |
144 | int error; |
145 | |
146 | #if SECURITY_MAC_CHECK_ENFORCE |
147 | /* 21167099 - only check if we allow write */ |
148 | if (!mac_system_enforce) { |
149 | return 0; |
150 | } |
151 | #endif |
152 | |
153 | MAC_CHECK(system_check_reboot, cred, howto); |
154 | |
155 | return error; |
156 | } |
157 | |
158 | |
159 | int |
160 | mac_system_check_settime(kauth_cred_t cred) |
161 | { |
162 | int error; |
163 | |
164 | #if SECURITY_MAC_CHECK_ENFORCE |
165 | /* 21167099 - only check if we allow write */ |
166 | if (!mac_system_enforce) { |
167 | return 0; |
168 | } |
169 | #endif |
170 | |
171 | MAC_CHECK(system_check_settime, cred); |
172 | |
173 | return error; |
174 | } |
175 | |
176 | int |
177 | mac_system_check_swapon(kauth_cred_t cred, struct vnode *vp) |
178 | { |
179 | int error; |
180 | |
181 | #if SECURITY_MAC_CHECK_ENFORCE |
182 | /* 21167099 - only check if we allow write */ |
183 | if (!mac_system_enforce) { |
184 | return 0; |
185 | } |
186 | #endif |
187 | |
188 | MAC_CHECK(system_check_swapon, cred, vp, mac_vnode_label(vp)); |
189 | return error; |
190 | } |
191 | |
192 | int |
193 | mac_system_check_swapoff(kauth_cred_t cred, struct vnode *vp) |
194 | { |
195 | int error; |
196 | |
197 | #if SECURITY_MAC_CHECK_ENFORCE |
198 | /* 21167099 - only check if we allow write */ |
199 | if (!mac_system_enforce) { |
200 | return 0; |
201 | } |
202 | #endif |
203 | |
204 | MAC_CHECK(system_check_swapoff, cred, vp, mac_vnode_label(vp)); |
205 | return error; |
206 | } |
207 | |
208 | int |
209 | mac_system_check_sysctlbyname(kauth_cred_t cred, const char *namestring, int *name, |
210 | size_t namelen, user_addr_t oldctl, size_t oldlen, |
211 | user_addr_t newctl, size_t newlen) |
212 | { |
213 | int error; |
214 | |
215 | #if SECURITY_MAC_CHECK_ENFORCE |
216 | /* 21167099 - only check if we allow write */ |
217 | if (!mac_system_enforce) { |
218 | return 0; |
219 | } |
220 | #endif |
221 | |
222 | MAC_CHECK(system_check_sysctlbyname, cred, namestring, |
223 | name, namelen, oldctl, oldlen, newctl, newlen); |
224 | |
225 | return error; |
226 | } |
227 | |
228 | int |
229 | mac_system_check_kas_info(kauth_cred_t cred, int selector) |
230 | { |
231 | int error; |
232 | |
233 | #if SECURITY_MAC_CHECK_ENFORCE |
234 | /* 21167099 - only check if we allow write */ |
235 | if (!mac_system_enforce) { |
236 | return 0; |
237 | } |
238 | #endif |
239 | |
240 | MAC_CHECK(system_check_kas_info, cred, selector); |
241 | |
242 | return error; |
243 | } |
244 | |