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
mac_system_check_acct(kauth_cred_t cred,struct vnode * vp)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
mac_system_check_host_priv(kauth_cred_t cred)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
mac_system_check_info(kauth_cred_t cred,const char * info_type)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
mac_system_check_nfsd(kauth_cred_t cred)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
mac_system_check_reboot(kauth_cred_t cred,int howto)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
mac_system_check_settime(kauth_cred_t cred)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
mac_system_check_swapon(kauth_cred_t cred,struct vnode * vp)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
mac_system_check_swapoff(kauth_cred_t cred,struct vnode * vp)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
mac_system_check_sysctlbyname(kauth_cred_t cred,const char * namestring,int * name,size_t namelen,user_addr_t oldctl,size_t oldlen,user_addr_t newctl,size_t newlen)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
mac_system_check_kas_info(kauth_cred_t cred,int selector)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