2 * Copyright (c) 2002-2003 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/module.h>
50 #include <sys/mutex.h>
53 #include <sys/systm.h>
54 #include <sys/vnode.h>
56 #include <sys/sysctl.h>
58 #include <security/mac/mac_framework.h>
59 #include <security/mac/mac_internal.h>
60 #include <security/mac/mac_policy.h>
63 mac_pipe_label_alloc(void)
67 label = mac_labelzone_alloc(M_WAITOK);
68 MAC_POLICY_PERFORM(pipe_init_label, label);
73 mac_pipe_init(struct pipepair *pp)
76 if (mac_labeled & MPC_OBJECT_PIPE)
77 pp->pp_label = mac_pipe_label_alloc();
83 mac_pipe_label_free(struct label *label)
86 MAC_POLICY_PERFORM_NOSLEEP(pipe_destroy_label, label);
87 mac_labelzone_free(label);
91 mac_pipe_destroy(struct pipepair *pp)
94 if (pp->pp_label != NULL) {
95 mac_pipe_label_free(pp->pp_label);
101 mac_pipe_copy_label(struct label *src, struct label *dest)
104 MAC_POLICY_PERFORM_NOSLEEP(pipe_copy_label, src, dest);
108 mac_pipe_externalize_label(struct label *label, char *elements,
109 char *outbuf, size_t outbuflen)
113 MAC_POLICY_EXTERNALIZE(pipe, label, elements, outbuf, outbuflen);
119 mac_pipe_internalize_label(struct label *label, char *string)
123 MAC_POLICY_INTERNALIZE(pipe, label, string);
129 mac_pipe_create(struct ucred *cred, struct pipepair *pp)
132 MAC_POLICY_PERFORM_NOSLEEP(pipe_create, cred, pp, pp->pp_label);
136 mac_pipe_relabel(struct ucred *cred, struct pipepair *pp,
137 struct label *newlabel)
140 MAC_POLICY_PERFORM_NOSLEEP(pipe_relabel, cred, pp, pp->pp_label,
144 MAC_CHECK_PROBE_DEFINE4(pipe_check_ioctl, "struct ucred *",
145 "struct pipepair *", "unsigned long", "void *");
148 mac_pipe_check_ioctl(struct ucred *cred, struct pipepair *pp,
149 unsigned long cmd, void *data)
153 mtx_assert(&pp->pp_mtx, MA_OWNED);
155 MAC_POLICY_CHECK_NOSLEEP(pipe_check_ioctl, cred, pp, pp->pp_label,
157 MAC_CHECK_PROBE4(pipe_check_ioctl, error, cred, pp, cmd, data);
162 MAC_CHECK_PROBE_DEFINE2(pipe_check_poll, "struct ucred *",
163 "struct pipepair *");
166 mac_pipe_check_poll(struct ucred *cred, struct pipepair *pp)
170 mtx_assert(&pp->pp_mtx, MA_OWNED);
172 MAC_POLICY_CHECK_NOSLEEP(pipe_check_poll, cred, pp, pp->pp_label);
173 MAC_CHECK_PROBE2(pipe_check_poll, error, cred, pp);
178 MAC_CHECK_PROBE_DEFINE2(pipe_check_read, "struct ucred *",
179 "struct pipepair *");
182 mac_pipe_check_read(struct ucred *cred, struct pipepair *pp)
186 mtx_assert(&pp->pp_mtx, MA_OWNED);
188 MAC_POLICY_CHECK_NOSLEEP(pipe_check_read, cred, pp, pp->pp_label);
189 MAC_CHECK_PROBE2(pipe_check_read, error, cred, pp);
194 MAC_CHECK_PROBE_DEFINE3(pipe_check_relabel, "struct ucred *",
195 "struct pipepair *", "struct label *");
198 mac_pipe_check_relabel(struct ucred *cred, struct pipepair *pp,
199 struct label *newlabel)
203 mtx_assert(&pp->pp_mtx, MA_OWNED);
205 MAC_POLICY_CHECK_NOSLEEP(pipe_check_relabel, cred, pp, pp->pp_label,
207 MAC_CHECK_PROBE3(pipe_check_relabel, error, cred, pp, newlabel);
212 MAC_CHECK_PROBE_DEFINE2(pipe_check_stat, "struct ucred *",
213 "struct pipepair *");
216 mac_pipe_check_stat(struct ucred *cred, struct pipepair *pp)
220 mtx_assert(&pp->pp_mtx, MA_OWNED);
222 MAC_POLICY_CHECK_NOSLEEP(pipe_check_stat, cred, pp, pp->pp_label);
223 MAC_CHECK_PROBE2(pipe_check_stat, error, cred, pp);
228 MAC_CHECK_PROBE_DEFINE2(pipe_check_write, "struct ucred *",
229 "struct pipepair *");
232 mac_pipe_check_write(struct ucred *cred, struct pipepair *pp)
236 mtx_assert(&pp->pp_mtx, MA_OWNED);
238 MAC_POLICY_CHECK_NOSLEEP(pipe_check_write, cred, pp, pp->pp_label);
239 MAC_CHECK_PROBE2(pipe_check_write, error, cred, pp);
245 mac_pipe_label_set(struct ucred *cred, struct pipepair *pp,
250 mtx_assert(&pp->pp_mtx, MA_OWNED);
252 error = mac_pipe_check_relabel(cred, pp, label);
256 mac_pipe_relabel(cred, pp, label);