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 * Copyright (c) 2003-2005 Networks Associates Technology, Inc. 30 * All rights reserved. 31 * 32 * This software was developed for the FreeBSD Project in part by Network 33 * Associates Laboratories, the Security Research Division of Network 34 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 35 * as part of the DARPA CHATS research program. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58 59 #include <sys/cdefs.h> 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/lock.h> 65 #include <sys/malloc.h> 66 #include <sys/sbuf.h> 67 #include <sys/systm.h> 68 #include <sys/vnode.h> 69 #include <sys/mount.h> 70 #include <sys/file.h> 71 #include <sys/namei.h> 72 #include <sys/sysctl.h> 73 #include <sys/msg.h> 74 75 #include <security/mac_internal.h> 76 77 static struct label * 78 mac_sysv_msgmsg_label_alloc(void) 79 { 80 struct label *label; 81 82 label = mac_labelzone_alloc(MAC_WAITOK); 83 if (label == NULL) 84 return (NULL); 85 MAC_PERFORM(sysvmsg_label_init, label); 86 return (label); 87 } 88 89 void 90 mac_sysvmsg_label_init(struct msg *msgptr) 91 { 92 93 msgptr->label = mac_sysv_msgmsg_label_alloc(); 94 } 95 96 static struct label * 97 mac_sysv_msgqueue_label_alloc(void) 98 { 99 struct label *label; 100 101 label = mac_labelzone_alloc(MAC_WAITOK); 102 if (label == NULL) 103 return (NULL); 104 MAC_PERFORM(sysvmsq_label_init, label); 105 return (label); 106 } 107 108 void 109 mac_sysvmsq_label_init(struct msqid_kernel *msqptr) 110 { 111 112 msqptr->label = mac_sysv_msgqueue_label_alloc(); 113 } 114 115 void 116 mac_sysvmsg_label_associate(kauth_cred_t cred, struct msqid_kernel *msqptr, 117 struct msg *msgptr) 118 { 119 120 MAC_PERFORM(sysvmsg_label_associate, cred, msqptr, msqptr->label, 121 msgptr, msgptr->label); 122 } 123 124 void 125 mac_sysvmsq_label_associate(kauth_cred_t cred, struct msqid_kernel *msqptr) 126 { 127 128 MAC_PERFORM(sysvmsq_label_associate, cred, msqptr, msqptr->label); 129 } 130 131 void 132 mac_sysvmsg_label_recycle(struct msg *msgptr) 133 { 134 135 MAC_PERFORM(sysvmsg_label_recycle, msgptr->label); 136 } 137 138 void 139 mac_sysvmsq_label_recycle(struct msqid_kernel *msqptr) 140 { 141 142 MAC_PERFORM(sysvmsq_label_recycle, msqptr->label); 143 } 144 145 int 146 mac_sysvmsq_check_enqueue(kauth_cred_t cred, struct msg *msgptr, 147 struct msqid_kernel *msqptr) 148 { 149 int error; 150 151 if (!mac_sysvmsg_enforce) 152 return (0); 153 154 MAC_CHECK(sysvmsq_check_enqueue, cred, msgptr, msgptr->label, msqptr, 155 msqptr->label); 156 157 return(error); 158 } 159 160 int 161 mac_sysvmsq_check_msgrcv(kauth_cred_t cred, struct msg *msgptr) 162 { 163 int error; 164 165 if (!mac_sysvmsg_enforce) 166 return (0); 167 168 MAC_CHECK(sysvmsq_check_msgrcv, cred, msgptr, msgptr->label); 169 170 return(error); 171 } 172 173 int 174 mac_sysvmsq_check_msgrmid(kauth_cred_t cred, struct msg *msgptr) 175 { 176 int error; 177 178 if (!mac_sysvmsg_enforce) 179 return (0); 180 181 MAC_CHECK(sysvmsq_check_msgrmid, cred, msgptr, msgptr->label); 182 183 return(error); 184 } 185 186 int 187 mac_sysvmsq_check_msqget(kauth_cred_t cred, struct msqid_kernel *msqptr) 188 { 189 int error; 190 191 if (!mac_sysvmsg_enforce) 192 return (0); 193 194 MAC_CHECK(sysvmsq_check_msqget, cred, msqptr, msqptr->label); 195 196 return(error); 197 } 198 199 int 200 mac_sysvmsq_check_msqsnd(kauth_cred_t cred, struct msqid_kernel *msqptr) 201 { 202 int error; 203 204 if (!mac_sysvmsg_enforce) 205 return (0); 206 207 MAC_CHECK(sysvmsq_check_msqsnd, cred, msqptr, msqptr->label); 208 209 return(error); 210 } 211 212 int 213 mac_sysvmsq_check_msqrcv(kauth_cred_t cred, struct msqid_kernel *msqptr) 214 { 215 int error; 216 217 if (!mac_sysvmsg_enforce) 218 return (0); 219 220 MAC_CHECK(sysvmsq_check_msqrcv, cred, msqptr, msqptr->label); 221 222 return(error); 223 } 224 225 int 226 mac_sysvmsq_check_msqctl(kauth_cred_t cred, struct msqid_kernel *msqptr, 227 int cmd) 228 { 229 int error; 230 231 if (!mac_sysvmsg_enforce) 232 return (0); 233 234 MAC_CHECK(sysvmsq_check_msqctl, cred, msqptr, msqptr->label, cmd); 235 236 return(error); 237 } 238