1 /*
2 * Copyright (c) 2021 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 #include <sys/param.h>
30 #include <sys/proc.h>
31 #include <sys/kauth.h>
32 #include <security/mac_framework.h>
33 #include <security/mac_internal.h>
34
35 int
mac_necp_check_open(proc_t proc,int flags)36 mac_necp_check_open(proc_t proc, int flags)
37 {
38 int error;
39
40 #if SECURITY_MAC_CHECK_ENFORCE
41 /* 21167099 - only check if we allow write */
42 if (!mac_proc_enforce) {
43 return 0;
44 }
45 #endif
46
47 if (!mac_proc_check_enforce(proc)) {
48 return 0;
49 }
50
51 MAC_CHECK(necp_check_open, current_cached_proc_cred(proc), flags);
52 return error;
53 }
54
55 int
mac_necp_check_client_action(proc_t proc,struct fileglob * fg,uint32_t action)56 mac_necp_check_client_action(proc_t proc, struct fileglob *fg, uint32_t action)
57 {
58 int error;
59
60 #if SECURITY_MAC_CHECK_ENFORCE
61 /* 21167099 - only check if we allow write */
62 if (!mac_proc_enforce) {
63 return 0;
64 }
65 #endif
66
67 if (!mac_proc_check_enforce(proc)) {
68 return 0;
69 }
70
71 MAC_CHECK(necp_check_client_action, current_cached_proc_cred(proc), fg, action);
72 return error;
73 }
74