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