2 * Copyright (c) 2003-2004 Networks Associates Technology, Inc.
3 * Copyright (c) 2006 SPARTA, Inc.
4 * Copyright (c) 2009 Robert N. M. Watson
7 * This software was developed for the FreeBSD Project in part by Network
8 * Associates Laboratories, the Security Research Division of Network
9 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
10 * as part of the DARPA CHATS research program.
12 * This software was enhanced by SPARTA ISSO under SPAWAR contract
13 * N66001-04-C-6019 ("SEFOS").
15 * This software was developed at the University of Cambridge Computer
16 * Laboratory with support from a grant from Google, Inc.
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
45 #include <sys/param.h>
46 #include <sys/kernel.h>
48 #include <sys/malloc.h>
49 #include <sys/mutex.h>
51 #include <sys/systm.h>
52 #include <sys/vnode.h>
53 #include <sys/mount.h>
55 #include <sys/namei.h>
57 #include <sys/sysctl.h>
60 #include <security/mac/mac_framework.h>
61 #include <security/mac/mac_internal.h>
62 #include <security/mac/mac_policy.h>
65 mac_sysv_shm_label_alloc(void)
69 label = mac_labelzone_alloc(M_WAITOK);
70 MAC_POLICY_PERFORM(sysvshm_init_label, label);
75 mac_sysvshm_init(struct shmid_kernel *shmsegptr)
78 if (mac_labeled & MPC_OBJECT_SYSVSHM)
79 shmsegptr->label = mac_sysv_shm_label_alloc();
81 shmsegptr->label = NULL;
85 mac_sysv_shm_label_free(struct label *label)
88 MAC_POLICY_PERFORM_NOSLEEP(sysvshm_destroy_label, label);
89 mac_labelzone_free(label);
93 mac_sysvshm_destroy(struct shmid_kernel *shmsegptr)
96 if (shmsegptr->label != NULL) {
97 mac_sysv_shm_label_free(shmsegptr->label);
98 shmsegptr->label = NULL;
103 mac_sysvshm_create(struct ucred *cred, struct shmid_kernel *shmsegptr)
106 MAC_POLICY_PERFORM_NOSLEEP(sysvshm_create, cred, shmsegptr,
111 mac_sysvshm_cleanup(struct shmid_kernel *shmsegptr)
114 MAC_POLICY_PERFORM_NOSLEEP(sysvshm_cleanup, shmsegptr->label);
117 MAC_CHECK_PROBE_DEFINE3(sysvshm_check_shmat, "struct ucred *",
118 "struct shmid_kernel *", "int");
121 mac_sysvshm_check_shmat(struct ucred *cred, struct shmid_kernel *shmsegptr,
126 MAC_POLICY_CHECK_NOSLEEP(sysvshm_check_shmat, cred, shmsegptr,
127 shmsegptr->label, shmflg);
128 MAC_CHECK_PROBE3(sysvshm_check_shmat, error, cred, shmsegptr,
134 MAC_CHECK_PROBE_DEFINE3(sysvshm_check_shmctl, "struct ucred *",
135 "struct shmid_kernel *", "int");
138 mac_sysvshm_check_shmctl(struct ucred *cred, struct shmid_kernel *shmsegptr,
143 MAC_POLICY_CHECK_NOSLEEP(sysvshm_check_shmctl, cred, shmsegptr,
144 shmsegptr->label, cmd);
145 MAC_CHECK_PROBE3(sysvshm_check_shmctl, error, cred, shmsegptr, cmd);
150 MAC_CHECK_PROBE_DEFINE2(sysvshm_check_shmdt, "struct ucred *",
154 mac_sysvshm_check_shmdt(struct ucred *cred, struct shmid_kernel *shmsegptr)
158 MAC_POLICY_CHECK_NOSLEEP(sysvshm_check_shmdt, cred, shmsegptr,
160 MAC_CHECK_PROBE2(sysvshm_check_shmdt, error, cred, shmsegptr);
165 MAC_CHECK_PROBE_DEFINE3(sysvshm_check_shmget, "struct ucred *",
166 "struct shmid_kernel *", "int");
169 mac_sysvshm_check_shmget(struct ucred *cred, struct shmid_kernel *shmsegptr,
174 MAC_POLICY_CHECK_NOSLEEP(sysvshm_check_shmget, cred, shmsegptr,
175 shmsegptr->label, shmflg);
176 MAC_CHECK_PROBE3(sysvshm_check_shmget, error, cred, shmsegptr,