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("$FreeBSD$");
43 #include "opt_kdtrace.h"
46 #include <sys/param.h>
47 #include <sys/kernel.h>
49 #include <sys/malloc.h>
50 #include <sys/mutex.h>
52 #include <sys/systm.h>
53 #include <sys/vnode.h>
54 #include <sys/mount.h>
56 #include <sys/namei.h>
58 #include <sys/sysctl.h>
61 #include <security/mac/mac_framework.h>
62 #include <security/mac/mac_internal.h>
63 #include <security/mac/mac_policy.h>
66 mac_sysv_sem_label_alloc(void)
70 label = mac_labelzone_alloc(M_WAITOK);
71 MAC_POLICY_PERFORM(sysvsem_init_label, label);
76 mac_sysvsem_init(struct semid_kernel *semakptr)
79 if (mac_labeled & MPC_OBJECT_SYSVSEM)
80 semakptr->label = mac_sysv_sem_label_alloc();
82 semakptr->label = NULL;
86 mac_sysv_sem_label_free(struct label *label)
89 MAC_POLICY_PERFORM_NOSLEEP(sysvsem_destroy_label, label);
90 mac_labelzone_free(label);
94 mac_sysvsem_destroy(struct semid_kernel *semakptr)
97 if (semakptr->label != NULL) {
98 mac_sysv_sem_label_free(semakptr->label);
99 semakptr->label = NULL;
104 mac_sysvsem_create(struct ucred *cred, struct semid_kernel *semakptr)
107 MAC_POLICY_PERFORM_NOSLEEP(sysvsem_create, cred, semakptr,
112 mac_sysvsem_cleanup(struct semid_kernel *semakptr)
115 MAC_POLICY_PERFORM_NOSLEEP(sysvsem_cleanup, semakptr->label);
118 MAC_CHECK_PROBE_DEFINE3(sysvsem_check_semctl, "struct ucred *",
119 "struct semid_kernel *", "int");
122 mac_sysvsem_check_semctl(struct ucred *cred, struct semid_kernel *semakptr,
127 MAC_POLICY_CHECK_NOSLEEP(sysvsem_check_semctl, cred, semakptr,
128 semakptr->label, cmd);
129 MAC_CHECK_PROBE3(sysvsem_check_semctl, error, cred, semakptr, cmd);
134 MAC_CHECK_PROBE_DEFINE2(sysvsem_check_semget, "struct ucred *",
135 "struct semid_kernel *");
138 mac_sysvsem_check_semget(struct ucred *cred, struct semid_kernel *semakptr)
142 MAC_POLICY_CHECK_NOSLEEP(sysvsem_check_semget, cred, semakptr,
148 MAC_CHECK_PROBE_DEFINE3(sysvsem_check_semop, "struct ucred *",
149 "struct semid_kernel *", "size_t");
152 mac_sysvsem_check_semop(struct ucred *cred, struct semid_kernel *semakptr,
157 MAC_POLICY_CHECK_NOSLEEP(sysvsem_check_semop, cred, semakptr,
158 semakptr->label, accesstype);
159 MAC_CHECK_PROBE3(sysvsem_check_semop, error, cred, semakptr,