1 /*- 2 * Copyright (c) 2003-2004 Networks Associates Technology, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project in part by Network 6 * Associates Laboratories, the Security Research Division of Network 7 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 8 * as part of the DARPA CHATS research program. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include "opt_mac.h" 36 37 #include <sys/param.h> 38 #include <sys/kernel.h> 39 #include <sys/lock.h> 40 #include <sys/malloc.h> 41 #include <sys/mutex.h> 42 #include <sys/mac.h> 43 #include <sys/sbuf.h> 44 #include <sys/systm.h> 45 #include <sys/vnode.h> 46 #include <sys/mount.h> 47 #include <sys/file.h> 48 #include <sys/namei.h> 49 #include <sys/sysctl.h> 50 #include <sys/msg.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 static struct label * 57 mac_sysv_msgmsg_label_alloc(void) 58 { 59 struct label *label; 60 61 label = mac_labelzone_alloc(M_WAITOK); 62 MAC_PERFORM(init_sysv_msgmsg_label, label); 63 return (label); 64 } 65 66 void 67 mac_init_sysv_msgmsg(struct msg *msgptr) 68 { 69 70 msgptr->label = mac_sysv_msgmsg_label_alloc(); 71 } 72 73 static struct label * 74 mac_sysv_msgqueue_label_alloc(void) 75 { 76 struct label *label; 77 78 label = mac_labelzone_alloc(M_WAITOK); 79 MAC_PERFORM(init_sysv_msgqueue_label, label); 80 return (label); 81 } 82 83 void 84 mac_init_sysv_msgqueue(struct msqid_kernel *msqkptr) 85 { 86 87 msqkptr->label = mac_sysv_msgqueue_label_alloc(); 88 } 89 90 static void 91 mac_sysv_msgmsg_label_free(struct label *label) 92 { 93 94 MAC_PERFORM(destroy_sysv_msgmsg_label, label); 95 mac_labelzone_free(label); 96 } 97 98 void 99 mac_destroy_sysv_msgmsg(struct msg *msgptr) 100 { 101 102 mac_sysv_msgmsg_label_free(msgptr->label); 103 msgptr->label = NULL; 104 } 105 106 static void 107 mac_sysv_msgqueue_label_free(struct label *label) 108 { 109 110 MAC_PERFORM(destroy_sysv_msgqueue_label, label); 111 mac_labelzone_free(label); 112 } 113 114 void 115 mac_destroy_sysv_msgqueue(struct msqid_kernel *msqkptr) 116 { 117 118 mac_sysv_msgqueue_label_free(msqkptr->label); 119 msqkptr->label = NULL; 120 } 121 122 void 123 mac_create_sysv_msgmsg(struct ucred *cred, struct msqid_kernel *msqkptr, 124 struct msg *msgptr) 125 { 126 127 MAC_PERFORM(create_sysv_msgmsg, cred, msqkptr, msqkptr->label, 128 msgptr, msgptr->label); 129 } 130 131 void 132 mac_create_sysv_msgqueue(struct ucred *cred, struct msqid_kernel *msqkptr) 133 { 134 135 MAC_PERFORM(create_sysv_msgqueue, cred, msqkptr, msqkptr->label); 136 } 137 138 void 139 mac_cleanup_sysv_msgmsg(struct msg *msgptr) 140 { 141 142 MAC_PERFORM(cleanup_sysv_msgmsg, msgptr->label); 143 } 144 145 void 146 mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr) 147 { 148 149 MAC_PERFORM(cleanup_sysv_msgqueue, msqkptr->label); 150 } 151 152 int 153 mac_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr, 154 struct msqid_kernel *msqkptr) 155 { 156 int error; 157 158 MAC_CHECK(check_sysv_msgmsq, cred, msgptr, msgptr->label, msqkptr, 159 msqkptr->label); 160 161 return (error); 162 } 163 164 int 165 mac_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr) 166 { 167 int error; 168 169 MAC_CHECK(check_sysv_msgrcv, cred, msgptr, msgptr->label); 170 171 return (error); 172 } 173 174 int 175 mac_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr) 176 { 177 int error; 178 179 MAC_CHECK(check_sysv_msgrmid, cred, msgptr, msgptr->label); 180 181 return (error); 182 } 183 184 int 185 mac_check_sysv_msqget(struct ucred *cred, struct msqid_kernel *msqkptr) 186 { 187 int error; 188 189 MAC_CHECK(check_sysv_msqget, cred, msqkptr, msqkptr->label); 190 191 return (error); 192 } 193 194 int 195 mac_check_sysv_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr) 196 { 197 int error; 198 199 MAC_CHECK(check_sysv_msqsnd, cred, msqkptr, msqkptr->label); 200 201 return (error); 202 } 203 204 int 205 mac_check_sysv_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr) 206 { 207 int error; 208 209 MAC_CHECK(check_sysv_msqrcv, cred, msqkptr, msqkptr->label); 210 211 return (error); 212 } 213 214 int 215 mac_check_sysv_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr, 216 int cmd) 217 { 218 int error; 219 220 MAC_CHECK(check_sysv_msqctl, cred, msqkptr, msqkptr->label, cmd); 221 222 return (error); 223 } 224