mac_sysv_msg.c revision 165469
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: head/sys/security/mac/mac_sysv_msg.c 165469 2006-12-22 23:34:47Z rwatson $"); 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 56static struct label * 57mac_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 66void 67mac_init_sysv_msgmsg(struct msg *msgptr) 68{ 69 70 msgptr->label = mac_sysv_msgmsg_label_alloc(); 71} 72 73static struct label * 74mac_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 83void 84mac_init_sysv_msgqueue(struct msqid_kernel *msqkptr) 85{ 86 87 msqkptr->label = mac_sysv_msgqueue_label_alloc(); 88} 89 90static void 91mac_sysv_msgmsg_label_free(struct label *label) 92{ 93 94 MAC_PERFORM(destroy_sysv_msgmsg_label, label); 95 mac_labelzone_free(label); 96} 97 98void 99mac_destroy_sysv_msgmsg(struct msg *msgptr) 100{ 101 102 mac_sysv_msgmsg_label_free(msgptr->label); 103 msgptr->label = NULL; 104} 105 106static void 107mac_sysv_msgqueue_label_free(struct label *label) 108{ 109 110 MAC_PERFORM(destroy_sysv_msgqueue_label, label); 111 mac_labelzone_free(label); 112} 113 114void 115mac_destroy_sysv_msgqueue(struct msqid_kernel *msqkptr) 116{ 117 118 mac_sysv_msgqueue_label_free(msqkptr->label); 119 msqkptr->label = NULL; 120} 121 122void 123mac_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 131void 132mac_create_sysv_msgqueue(struct ucred *cred, struct msqid_kernel *msqkptr) 133{ 134 135 MAC_PERFORM(create_sysv_msgqueue, cred, msqkptr, msqkptr->label); 136} 137 138void 139mac_cleanup_sysv_msgmsg(struct msg *msgptr) 140{ 141 142 MAC_PERFORM(cleanup_sysv_msgmsg, msgptr->label); 143} 144 145void 146mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr) 147{ 148 149 MAC_PERFORM(cleanup_sysv_msgqueue, msqkptr->label); 150} 151 152int 153mac_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 164int 165mac_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 174int 175mac_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 184int 185mac_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 194int 195mac_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 204int 205mac_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 214int 215mac_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