xref: /freebsd/sys/security/mac/mac_sysv_msg.c (revision 282a3889ebf826db9839be296ff1dd903f6d6d6e)
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