1 /*- 2 * Copyright (c) 2003-2004 Networks Associates Technology, Inc. 3 * Copyright (c) 2006 SPARTA, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project in part by Network 7 * Associates Laboratories, the Security Research Division of Network 8 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 9 * as part of the DARPA CHATS research program. 10 * 11 * This software was enhanced by SPARTA ISSO under SPAWAR contract 12 * N66001-04-C-6019 ("SEFOS"). 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include "opt_mac.h" 40 41 #include <sys/param.h> 42 #include <sys/kernel.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/mutex.h> 46 #include <sys/sbuf.h> 47 #include <sys/systm.h> 48 #include <sys/vnode.h> 49 #include <sys/mount.h> 50 #include <sys/file.h> 51 #include <sys/namei.h> 52 #include <sys/sysctl.h> 53 #include <sys/msg.h> 54 55 #include <security/mac/mac_framework.h> 56 #include <security/mac/mac_internal.h> 57 #include <security/mac/mac_policy.h> 58 59 static struct label * 60 mac_sysv_msgmsg_label_alloc(void) 61 { 62 struct label *label; 63 64 label = mac_labelzone_alloc(M_WAITOK); 65 MAC_PERFORM(sysvmsg_init_label, label); 66 return (label); 67 } 68 69 void 70 mac_sysvmsg_init(struct msg *msgptr) 71 { 72 73 msgptr->label = mac_sysv_msgmsg_label_alloc(); 74 } 75 76 static struct label * 77 mac_sysv_msgqueue_label_alloc(void) 78 { 79 struct label *label; 80 81 label = mac_labelzone_alloc(M_WAITOK); 82 MAC_PERFORM(sysvmsq_init_label, label); 83 return (label); 84 } 85 86 void 87 mac_sysvmsq_init(struct msqid_kernel *msqkptr) 88 { 89 90 msqkptr->label = mac_sysv_msgqueue_label_alloc(); 91 } 92 93 static void 94 mac_sysv_msgmsg_label_free(struct label *label) 95 { 96 97 MAC_PERFORM(sysvmsg_destroy_label, label); 98 mac_labelzone_free(label); 99 } 100 101 void 102 mac_sysvmsg_destroy(struct msg *msgptr) 103 { 104 105 mac_sysv_msgmsg_label_free(msgptr->label); 106 msgptr->label = NULL; 107 } 108 109 static void 110 mac_sysv_msgqueue_label_free(struct label *label) 111 { 112 113 MAC_PERFORM(sysvmsq_destroy_label, label); 114 mac_labelzone_free(label); 115 } 116 117 void 118 mac_sysvmsq_destroy(struct msqid_kernel *msqkptr) 119 { 120 121 mac_sysv_msgqueue_label_free(msqkptr->label); 122 msqkptr->label = NULL; 123 } 124 125 void 126 mac_sysvmsg_create(struct ucred *cred, struct msqid_kernel *msqkptr, 127 struct msg *msgptr) 128 { 129 130 MAC_PERFORM(sysvmsg_create, cred, msqkptr, msqkptr->label, 131 msgptr, msgptr->label); 132 } 133 134 void 135 mac_sysvmsq_create(struct ucred *cred, struct msqid_kernel *msqkptr) 136 { 137 138 MAC_PERFORM(sysvmsq_create, cred, msqkptr, msqkptr->label); 139 } 140 141 void 142 mac_sysvmsg_cleanup(struct msg *msgptr) 143 { 144 145 MAC_PERFORM(sysvmsg_cleanup, msgptr->label); 146 } 147 148 void 149 mac_sysvmsq_cleanup(struct msqid_kernel *msqkptr) 150 { 151 152 MAC_PERFORM(sysvmsq_cleanup, msqkptr->label); 153 } 154 155 int 156 mac_sysvmsq_check_msgmsq(struct ucred *cred, struct msg *msgptr, 157 struct msqid_kernel *msqkptr) 158 { 159 int error; 160 161 MAC_CHECK(sysvmsq_check_msgmsq, cred, msgptr, msgptr->label, 162 msqkptr, msqkptr->label); 163 164 return (error); 165 } 166 167 int 168 mac_sysvmsq_check_msgrcv(struct ucred *cred, struct msg *msgptr) 169 { 170 int error; 171 172 MAC_CHECK(sysvmsq_check_msgrcv, cred, msgptr, msgptr->label); 173 174 return (error); 175 } 176 177 int 178 mac_sysvmsq_check_msgrmid(struct ucred *cred, struct msg *msgptr) 179 { 180 int error; 181 182 MAC_CHECK(sysvmsq_check_msgrmid, cred, msgptr, msgptr->label); 183 184 return (error); 185 } 186 187 int 188 mac_sysvmsq_check_msqget(struct ucred *cred, struct msqid_kernel *msqkptr) 189 { 190 int error; 191 192 MAC_CHECK(sysvmsq_check_msqget, cred, msqkptr, msqkptr->label); 193 194 return (error); 195 } 196 197 int 198 mac_sysvmsq_check_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr) 199 { 200 int error; 201 202 MAC_CHECK(sysvmsq_check_msqsnd, cred, msqkptr, msqkptr->label); 203 204 return (error); 205 } 206 207 int 208 mac_sysvmsq_check_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr) 209 { 210 int error; 211 212 MAC_CHECK(sysvmsq_check_msqrcv, cred, msqkptr, msqkptr->label); 213 214 return (error); 215 } 216 217 int 218 mac_sysvmsq_check_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr, 219 int cmd) 220 { 221 int error; 222 223 MAC_CHECK(sysvmsq_check_msqctl, cred, msqkptr, msqkptr->label, cmd); 224 225 return (error); 226 } 227