1 /*-
2 * Copyright (c) 1999-2002, 2009 Robert N. M. Watson
3 * Copyright (c) 2001 Ilmar S. Habibulin
4 * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
5 * Copyright (c) 2006 SPARTA, Inc.
6 *
7 * This software was developed by Robert Watson and Ilmar Habibulin for the
8 * TrustedBSD Project.
9 *
10 * This software was developed for the FreeBSD Project in part by Network
11 * Associates Laboratories, the Security Research Division of Network
12 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
13 * as part of the DARPA CHATS research program.
14 *
15 * This software was enhanced by SPARTA ISSO under SPAWAR contract
16 * N66001-04-C-6019 ("SEFOS").
17 *
18 * This software was developed at the University of Cambridge Computer
19 * Laboratory with support from a grant from Google, Inc.
20 *
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
23 * are met:
24 * 1. Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in the
28 * documentation and/or other materials provided with the distribution.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * SUCH DAMAGE.
41 */
42
43 #include <sys/param.h>
44 #include <sys/kernel.h>
45 #include <sys/module.h>
46 #include <sys/queue.h>
47 #include <sys/sdt.h>
48 #include <sys/vnode.h>
49
50 #include <security/audit/audit.h>
51
52 #include <security/mac/mac_framework.h>
53 #include <security/mac/mac_internal.h>
54 #include <security/mac/mac_policy.h>
55
56 MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit, "struct ucred *",
57 "struct auditinfo *");
58
59 int
mac_cred_check_setaudit(struct ucred * cred,struct auditinfo * ai)60 mac_cred_check_setaudit(struct ucred *cred, struct auditinfo *ai)
61 {
62 int error;
63
64 MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit, cred, ai);
65 MAC_CHECK_PROBE2(cred_check_setaudit, error, cred, ai);
66
67 return (error);
68 }
69
70 MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit_addr, "struct ucred *",
71 "struct auditinfo_addr *");
72
73 int
mac_cred_check_setaudit_addr(struct ucred * cred,struct auditinfo_addr * aia)74 mac_cred_check_setaudit_addr(struct ucred *cred, struct auditinfo_addr *aia)
75 {
76 int error;
77
78 MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit_addr, cred, aia);
79 MAC_CHECK_PROBE2(cred_check_setaudit_addr, error, cred, aia);
80
81 return (error);
82 }
83
84 MAC_CHECK_PROBE_DEFINE2(cred_check_setauid, "struct ucred *", "uid_t");
85
86 int
mac_cred_check_setauid(struct ucred * cred,uid_t auid)87 mac_cred_check_setauid(struct ucred *cred, uid_t auid)
88 {
89 int error;
90
91 MAC_POLICY_CHECK_NOSLEEP(cred_check_setauid, cred, auid);
92 MAC_CHECK_PROBE2(cred_check_setauid, error, cred, auid);
93
94 return (error);
95 }
96
97 MAC_CHECK_PROBE_DEFINE3(system_check_audit, "struct ucred *", "void *",
98 "int");
99
100 int
mac_system_check_audit(struct ucred * cred,void * record,int length)101 mac_system_check_audit(struct ucred *cred, void *record, int length)
102 {
103 int error;
104
105 MAC_POLICY_CHECK_NOSLEEP(system_check_audit, cred, record, length);
106 MAC_CHECK_PROBE3(system_check_audit, error, cred, record, length);
107
108 return (error);
109 }
110
111 MAC_CHECK_PROBE_DEFINE2(system_check_auditctl, "struct ucred *",
112 "struct vnode *");
113
114 int
mac_system_check_auditctl(struct ucred * cred,struct vnode * vp)115 mac_system_check_auditctl(struct ucred *cred, struct vnode *vp)
116 {
117 int error;
118 struct label *vl;
119
120 ASSERT_VOP_LOCKED(vp, "mac_system_check_auditctl");
121
122 vl = (vp != NULL) ? vp->v_label : NULL;
123 MAC_POLICY_CHECK(system_check_auditctl, cred, vp, vl);
124 MAC_CHECK_PROBE2(system_check_auditctl, error, cred, vp);
125
126 return (error);
127 }
128
129 MAC_CHECK_PROBE_DEFINE2(system_check_auditon, "struct ucred *", "int");
130
131 int
mac_system_check_auditon(struct ucred * cred,int cmd)132 mac_system_check_auditon(struct ucred *cred, int cmd)
133 {
134 int error;
135
136 MAC_POLICY_CHECK_NOSLEEP(system_check_auditon, cred, cmd);
137 MAC_CHECK_PROBE2(system_check_auditon, error, cred, cmd);
138
139 return (error);
140 }
141