2 * Copyright (c) 2003-2004 Networks Associates Technology, Inc.
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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
38 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/mutex.h>
44 #include <sys/systm.h>
45 #include <sys/vnode.h>
46 #include <sys/mount.h>
48 #include <sys/namei.h>
49 #include <sys/sysctl.h>
52 #include <sys/mac_policy.h>
54 #include <security/mac/mac_internal.h>
56 static int mac_enforce_sysv_msg = 1;
57 SYSCTL_INT(_security_mac, OID_AUTO, enforce_sysv_msg, CTLFLAG_RW,
58 &mac_enforce_sysv_msg, 0,
59 "Enforce MAC policy on System V IPC Message Queues");
60 TUNABLE_INT("security.mac.enforce_sysv_msg", &mac_enforce_sysv_msg);
63 static unsigned int nmacipcmsgs, nmacipcmsqs;
64 SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipc_msgs, CTLFLAG_RD,
65 &nmacipcmsgs, 0, "number of sysv ipc messages inuse");
66 SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipc_msqs, CTLFLAG_RD,
67 &nmacipcmsqs, 0, "number of sysv ipc message queue identifiers inuse");
71 mac_sysv_msgmsg_label_alloc(void)
75 label = mac_labelzone_alloc(M_WAITOK);
76 MAC_PERFORM(init_sysv_msgmsg_label, label);
77 MAC_DEBUG_COUNTER_INC(&nmacipcmsgs);
82 mac_init_sysv_msgmsg(struct msg *msgptr)
85 msgptr->label = mac_sysv_msgmsg_label_alloc();
89 mac_sysv_msgqueue_label_alloc(void)
93 label = mac_labelzone_alloc(M_WAITOK);
94 MAC_PERFORM(init_sysv_msgqueue_label, label);
95 MAC_DEBUG_COUNTER_INC(&nmacipcmsqs);
100 mac_init_sysv_msgqueue(struct msqid_kernel *msqkptr)
103 msqkptr->label = mac_sysv_msgqueue_label_alloc();
107 mac_sysv_msgmsg_label_free(struct label *label)
110 MAC_PERFORM(destroy_sysv_msgmsg_label, label);
111 mac_labelzone_free(label);
112 MAC_DEBUG_COUNTER_DEC(&nmacipcmsgs);
116 mac_destroy_sysv_msgmsg(struct msg *msgptr)
119 mac_sysv_msgmsg_label_free(msgptr->label);
120 msgptr->label = NULL;
124 mac_sysv_msgqueue_label_free(struct label *label)
127 MAC_PERFORM(destroy_sysv_msgqueue_label, label);
128 mac_labelzone_free(label);
129 MAC_DEBUG_COUNTER_DEC(&nmacipcmsqs);
133 mac_destroy_sysv_msgqueue(struct msqid_kernel *msqkptr)
136 mac_sysv_msgqueue_label_free(msqkptr->label);
137 msqkptr->label = NULL;
141 mac_create_sysv_msgmsg(struct ucred *cred, struct msqid_kernel *msqkptr,
145 MAC_PERFORM(create_sysv_msgmsg, cred, msqkptr, msqkptr->label,
146 msgptr, msgptr->label);
150 mac_create_sysv_msgqueue(struct ucred *cred, struct msqid_kernel *msqkptr)
153 MAC_PERFORM(create_sysv_msgqueue, cred, msqkptr, msqkptr->label);
157 mac_cleanup_sysv_msgmsg(struct msg *msgptr)
160 MAC_PERFORM(cleanup_sysv_msgmsg, msgptr->label);
164 mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr)
167 MAC_PERFORM(cleanup_sysv_msgqueue, msqkptr->label);
171 mac_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr,
172 struct msqid_kernel *msqkptr)
176 if (!mac_enforce_sysv_msg)
179 MAC_CHECK(check_sysv_msgmsq, cred, msgptr, msgptr->label, msqkptr,
186 mac_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr)
190 if (!mac_enforce_sysv_msg)
193 MAC_CHECK(check_sysv_msgrcv, cred, msgptr, msgptr->label);
199 mac_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr)
203 if (!mac_enforce_sysv_msg)
206 MAC_CHECK(check_sysv_msgrmid, cred, msgptr, msgptr->label);
212 mac_check_sysv_msqget(struct ucred *cred, struct msqid_kernel *msqkptr)
216 if (!mac_enforce_sysv_msg)
219 MAC_CHECK(check_sysv_msqget, cred, msqkptr, msqkptr->label);
225 mac_check_sysv_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr)
229 if (!mac_enforce_sysv_msg)
232 MAC_CHECK(check_sysv_msqsnd, cred, msqkptr, msqkptr->label);
238 mac_check_sysv_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr)
242 if (!mac_enforce_sysv_msg)
245 MAC_CHECK(check_sysv_msqrcv, cred, msqkptr, msqkptr->label);
251 mac_check_sysv_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr,
256 if (!mac_enforce_sysv_msg)
259 MAC_CHECK(check_sysv_msqctl, cred, msqkptr, msqkptr->label, cmd);