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/cdefs.h>
44__FBSDID("$FreeBSD$");
45
46#include "opt_kdtrace.h"
47
48#include <sys/param.h>
49#include <sys/kernel.h>
50#include <sys/module.h>
51#include <sys/queue.h>
52#include <sys/sdt.h>
53#include <sys/vnode.h>
54
55#include <security/audit/audit.h>
56
57#include <security/mac/mac_framework.h>
58#include <security/mac/mac_internal.h>
59#include <security/mac/mac_policy.h>
60
61MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit, "struct ucred *",
62    "struct auditinfo *");
63
64int
65mac_cred_check_setaudit(struct ucred *cred, struct auditinfo *ai)
66{
67	int error;
68
69	MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit, cred, ai);
70	MAC_CHECK_PROBE2(cred_check_setaudit, error, cred, ai);
71
72	return (error);
73}
74
75MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit_addr, "struct ucred *",
76    "struct auditinfo_addr *");
77
78int
79mac_cred_check_setaudit_addr(struct ucred *cred, struct auditinfo_addr *aia)
80{
81	int error;
82
83	MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit_addr, cred, aia);
84	MAC_CHECK_PROBE2(cred_check_setaudit_addr, error, cred, aia);
85
86	return (error);
87}
88
89MAC_CHECK_PROBE_DEFINE2(cred_check_setauid, "struct ucred *", "uid_t");
90
91int
92mac_cred_check_setauid(struct ucred *cred, uid_t auid)
93{
94	int error;
95
96	MAC_POLICY_CHECK_NOSLEEP(cred_check_setauid, cred, auid);
97	MAC_CHECK_PROBE2(cred_check_setauid, error, cred, auid);
98
99	return (error);
100}
101
102MAC_CHECK_PROBE_DEFINE3(system_check_audit, "struct ucred *", "void *",
103    "int");
104
105int
106mac_system_check_audit(struct ucred *cred, void *record, int length)
107{
108	int error;
109
110	MAC_POLICY_CHECK_NOSLEEP(system_check_audit, cred, record, length);
111	MAC_CHECK_PROBE3(system_check_audit, error, cred, record, length);
112
113	return (error);
114}
115
116MAC_CHECK_PROBE_DEFINE2(system_check_auditctl, "struct ucred *",
117    "struct vnode *");
118
119int
120mac_system_check_auditctl(struct ucred *cred, struct vnode *vp)
121{
122	int error;
123	struct label *vl;
124
125	ASSERT_VOP_LOCKED(vp, "mac_system_check_auditctl");
126
127	vl = (vp != NULL) ? vp->v_label : NULL;
128	MAC_POLICY_CHECK(system_check_auditctl, cred, vp, vl);
129	MAC_CHECK_PROBE2(system_check_auditctl, error, cred, vp);
130
131	return (error);
132}
133
134MAC_CHECK_PROBE_DEFINE2(system_check_auditon, "struct ucred *", "int");
135
136int
137mac_system_check_auditon(struct ucred *cred, int cmd)
138{
139	int error;
140
141	MAC_POLICY_CHECK_NOSLEEP(system_check_auditon, cred, cmd);
142	MAC_CHECK_PROBE2(system_check_auditon, error, cred, cmd);
143
144	return (error);
145}
146