2 * Copyright (c) 2003-2006 SPARTA, Inc.
3 * Copyright (c) 2009 Robert N. M. Watson
6 * This software was developed for the FreeBSD Project in part by Network
7 * Associates Laboratories, the Security Research Division of Network
8 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
9 * as part of the DARPA CHATS research program.
11 * This software was enhanced by SPARTA ISSO under SPAWAR contract
12 * N66001-04-C-6019 ("SEFOS").
14 * This software was developed at the University of Cambridge Computer
15 * Laboratory with support from a grant from Google, Inc.
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
43 #include "opt_posix.h"
45 #include <sys/param.h>
46 #include <sys/kernel.h>
48 #include <sys/malloc.h>
49 #include <sys/module.h>
51 #include <sys/systm.h>
52 #include <sys/sysctl.h>
54 #include <security/mac/mac_framework.h>
55 #include <security/mac/mac_internal.h>
56 #include <security/mac/mac_policy.h>
59 mac_posixsem_label_alloc(void)
63 label = mac_labelzone_alloc(M_WAITOK);
64 MAC_POLICY_PERFORM(posixsem_init_label, label);
69 mac_posixsem_init(struct ksem *ks)
72 if (mac_labeled & MPC_OBJECT_POSIXSEM)
73 ks->ks_label = mac_posixsem_label_alloc();
79 mac_posixsem_label_free(struct label *label)
82 MAC_POLICY_PERFORM_NOSLEEP(posixsem_destroy_label, label);
83 mac_labelzone_free(label);
87 mac_posixsem_destroy(struct ksem *ks)
90 if (ks->ks_label != NULL) {
91 mac_posixsem_label_free(ks->ks_label);
97 mac_posixsem_create(struct ucred *cred, struct ksem *ks)
100 MAC_POLICY_PERFORM_NOSLEEP(posixsem_create, cred, ks, ks->ks_label);
103 MAC_CHECK_PROBE_DEFINE2(posixsem_check_open, "struct ucred *",
107 mac_posixsem_check_open(struct ucred *cred, struct ksem *ks)
111 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_open, cred, ks,
113 MAC_CHECK_PROBE2(posixsem_check_open, error, cred, ks);
118 MAC_CHECK_PROBE_DEFINE3(posixsem_check_getvalue, "struct ucred *",
119 "struct ucred *", "struct ksem *");
122 mac_posixsem_check_getvalue(struct ucred *active_cred, struct ucred *file_cred,
127 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_getvalue, active_cred,
128 file_cred, ks, ks->ks_label);
129 MAC_CHECK_PROBE3(posixsem_check_getvalue, error, active_cred,
135 MAC_CHECK_PROBE_DEFINE3(posixsem_check_post, "struct ucred *",
136 "struct ucred *", "struct ksem *");
139 mac_posixsem_check_post(struct ucred *active_cred, struct ucred *file_cred,
144 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_post, active_cred, file_cred,
146 MAC_CHECK_PROBE3(posixsem_check_post, error, active_cred, file_cred,
152 MAC_CHECK_PROBE_DEFINE3(posixsem_check_stat, "struct ucred *",
153 "struct ucred *", "struct ksem *");
156 mac_posixsem_check_stat(struct ucred *active_cred, struct ucred *file_cred,
161 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_stat, active_cred, file_cred,
163 MAC_CHECK_PROBE3(posixsem_check_stat, error, active_cred, file_cred,
169 MAC_CHECK_PROBE_DEFINE2(posixsem_check_unlink, "struct ucred *",
173 mac_posixsem_check_unlink(struct ucred *cred, struct ksem *ks)
177 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_unlink, cred, ks,
179 MAC_CHECK_PROBE2(posixsem_check_unlink, error, cred, ks);
184 MAC_CHECK_PROBE_DEFINE3(posixsem_check_wait, "struct ucred *",
185 "struct ucred *", "struct ksem *");
188 mac_posixsem_check_wait(struct ucred *active_cred, struct ucred *file_cred,
193 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_wait, active_cred, file_cred,
195 MAC_CHECK_PROBE3(posixsem_check_wait, error, active_cred, file_cred,
201 MAC_CHECK_PROBE_DEFINE3(posixsem_check_setmode, "struct ucred *",
202 "struct ksem *", "mode_t");
205 mac_posixsem_check_setmode(struct ucred *cred, struct ksem *ks, mode_t mode)
209 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_setmode, cred, ks,
211 MAC_CHECK_PROBE3(posixsem_check_setmode, error, cred, ks, mode);
216 MAC_CHECK_PROBE_DEFINE4(posixsem_check_setowner, "struct ucred *",
217 "struct ks *", "uid_t", "gid_t");
220 mac_posixsem_check_setowner(struct ucred *cred, struct ksem *ks, uid_t uid,
225 MAC_POLICY_CHECK_NOSLEEP(posixsem_check_setowner, cred, ks,
226 ks->ks_label, uid, gid);
227 MAC_CHECK_PROBE4(posixsem_check_setowner, error, cred, ks,