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/sbuf.h> 43 #include <sys/systm.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/file.h> 47 #include <sys/namei.h> 48 #include <sys/sysctl.h> 49 #include <sys/msg.h> 50 51 #include <security/mac/mac_framework.h> 52 #include <security/mac/mac_internal.h> 53 #include <security/mac/mac_policy.h> 54 55 static struct label * 56 mac_sysv_msgmsg_label_alloc(void) 57 { 58 struct label *label; 59 60 label = mac_labelzone_alloc(M_WAITOK); 61 MAC_PERFORM(init_sysv_msgmsg_label, label); 62 return (label); 63 } 64 65 void 66 mac_init_sysv_msgmsg(struct msg *msgptr) 67 { 68 69 msgptr->label = mac_sysv_msgmsg_label_alloc(); 70 } 71 72 static struct label * 73 mac_sysv_msgqueue_label_alloc(void) 74 { 75 struct label *label; 76 77 label = mac_labelzone_alloc(M_WAITOK); 78 MAC_PERFORM(init_sysv_msgqueue_label, label); 79 return (label); 80 } 81 82 void 83 mac_init_sysv_msgqueue(struct msqid_kernel *msqkptr) 84 { 85 86 msqkptr->label = mac_sysv_msgqueue_label_alloc(); 87 } 88 89 static void 90 mac_sysv_msgmsg_label_free(struct label *label) 91 { 92 93 MAC_PERFORM(destroy_sysv_msgmsg_label, label); 94 mac_labelzone_free(label); 95 } 96 97 void 98 mac_destroy_sysv_msgmsg(struct msg *msgptr) 99 { 100 101 mac_sysv_msgmsg_label_free(msgptr->label); 102 msgptr->label = NULL; 103 } 104 105 static void 106 mac_sysv_msgqueue_label_free(struct label *label) 107 { 108 109 MAC_PERFORM(destroy_sysv_msgqueue_label, label); 110 mac_labelzone_free(label); 111 } 112 113 void 114 mac_destroy_sysv_msgqueue(struct msqid_kernel *msqkptr) 115 { 116 117 mac_sysv_msgqueue_label_free(msqkptr->label); 118 msqkptr->label = NULL; 119 } 120 121 void 122 mac_create_sysv_msgmsg(struct ucred *cred, struct msqid_kernel *msqkptr, 123 struct msg *msgptr) 124 { 125 126 MAC_PERFORM(create_sysv_msgmsg, cred, msqkptr, msqkptr->label, 127 msgptr, msgptr->label); 128 } 129 130 void 131 mac_create_sysv_msgqueue(struct ucred *cred, struct msqid_kernel *msqkptr) 132 { 133 134 MAC_PERFORM(create_sysv_msgqueue, cred, msqkptr, msqkptr->label); 135 } 136 137 void 138 mac_cleanup_sysv_msgmsg(struct msg *msgptr) 139 { 140 141 MAC_PERFORM(cleanup_sysv_msgmsg, msgptr->label); 142 } 143 144 void 145 mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr) 146 { 147 148 MAC_PERFORM(cleanup_sysv_msgqueue, msqkptr->label); 149 } 150 151 int 152 mac_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr, 153 struct msqid_kernel *msqkptr) 154 { 155 int error; 156 157 MAC_CHECK(check_sysv_msgmsq, cred, msgptr, msgptr->label, msqkptr, 158 msqkptr->label); 159 160 return (error); 161 } 162 163 int 164 mac_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr) 165 { 166 int error; 167 168 MAC_CHECK(check_sysv_msgrcv, cred, msgptr, msgptr->label); 169 170 return (error); 171 } 172 173 int 174 mac_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr) 175 { 176 int error; 177 178 MAC_CHECK(check_sysv_msgrmid, cred, msgptr, msgptr->label); 179 180 return (error); 181 } 182 183 int 184 mac_check_sysv_msqget(struct ucred *cred, struct msqid_kernel *msqkptr) 185 { 186 int error; 187 188 MAC_CHECK(check_sysv_msqget, cred, msqkptr, msqkptr->label); 189 190 return (error); 191 } 192 193 int 194 mac_check_sysv_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr) 195 { 196 int error; 197 198 MAC_CHECK(check_sysv_msqsnd, cred, msqkptr, msqkptr->label); 199 200 return (error); 201 } 202 203 int 204 mac_check_sysv_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr) 205 { 206 int error; 207 208 MAC_CHECK(check_sysv_msqrcv, cred, msqkptr, msqkptr->label); 209 210 return (error); 211 } 212 213 int 214 mac_check_sysv_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr, 215 int cmd) 216 { 217 int error; 218 219 MAC_CHECK(check_sysv_msqctl, cred, msqkptr, msqkptr->label, cmd); 220 221 return (error); 222 } 223