/src/SockFuzzer/third_party/xnu/security/mac_internal.h

Source
/*
 * Copyright (c) 2007 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*-
 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
 * Copyright (c) 2001 Ilmar S. Habibulin
 * Copyright (c) 2001, 2002, 2003, 2004 Networks Associates Technology, Inc.
 * Copyright (c) 2005 SPARTA, Inc.
 * All rights reserved.
 *
 * This software was developed by Robert Watson and Ilmar Habibulin for the
 * TrustedBSD Project.
 *
 * This software was developed for the FreeBSD Project in part by Network
 * Associates Laboratories, the Security Research Division of Network
 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
 * as part of the DARPA CHATS research program.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#ifndef _SECURITY_MAC_INTERNAL_H_
#define _SECURITY_MAC_INTERNAL_H_

#ifndef PRIVATE
#warning "MAC policy is not KPI, see Technical Q&A QA1574, this header will be removed in next version"
#endif

#include <string.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <security/mac.h>
#include <security/mac_framework.h>
#include <security/mac_policy.h>
#include <security/mac_data.h>
#include <sys/sysctl.h>
#include <kern/locks.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/sbuf.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/vnode.h>

/*
 * MAC Framework sysctl namespace.
 */

SYSCTL_DECL(_security);
SYSCTL_DECL(_security_mac);

extern int mac_late;

struct mac_policy_list_element {
  struct mac_policy_conf *mpc;
};

struct mac_policy_list {
  u_int                           numloaded;
  u_int                           max;
  u_int                           maxindex;
  u_int                           staticmax;
  u_int                           chunks;
  u_int                           freehint;
  struct mac_policy_list_element  *entries;
};

typedef struct mac_policy_list mac_policy_list_t;


/*
 * Policy that has registered with the framework for a specific
 * label namespace name.
 */
struct mac_label_listener {
  mac_policy_handle_t             mll_handle;
  LIST_ENTRY(mac_label_listener)  mll_list;
};

LIST_HEAD(mac_label_listeners_t, mac_label_listener);

/*
 * Type of list used to manage label namespace names.
 */
struct mac_label_element {
  char                            mle_name[MAC_MAX_LABEL_ELEMENT_NAME];
  struct mac_label_listeners_t    mle_listeners;
  LIST_ENTRY(mac_label_element)   mle_list;
};

LIST_HEAD(mac_label_element_list_t, mac_label_element);

/*
 * MAC Framework global variables.
 */

extern struct mac_label_element_list_t mac_label_element_list;
extern struct mac_label_element_list_t mac_static_label_element_list;

extern struct mac_policy_list mac_policy_list;

/*
 * global flags to control whether a MACF subsystem is configured
 * at all in the system.
 */
extern unsigned int mac_device_enforce;
extern unsigned int mac_pipe_enforce;
extern unsigned int mac_posixsem_enforce;
extern unsigned int mac_posixshm_enforce;
extern unsigned int mac_proc_enforce;
extern unsigned int mac_socket_enforce;
extern unsigned int mac_system_enforce;
extern unsigned int mac_sysvmsg_enforce;
extern unsigned int mac_sysvsem_enforce;
extern unsigned int mac_sysvshm_enforce;
extern unsigned int mac_vm_enforce;
extern unsigned int mac_vnode_enforce;

extern unsigned int mac_label_vnodes;
extern unsigned int mac_vnode_label_count;

static bool mac_proc_check_enforce(proc_t p);

static __inline__ bool
mac_proc_check_enforce(proc_t p)
{
#if CONFIG_MACF
  // Don't apply policies to the kernel itself.
  return p != kernproc;
#else
#pragma unused(p)
  return false;
#endif // CONFIG_MACF
}

static bool mac_cred_check_enforce(kauth_cred_t cred);

static __inline__ bool
mac_cred_check_enforce(kauth_cred_t cred)
{
#if CONFIG_MACF
  return cred != proc_ucred(kernproc);
#else
#pragma unused(p)
  return false;
#endif // CONFIG_MACF
}

/*
 * MAC Framework infrastructure functions.
 */

int mac_error_select(int error1, int error2);

void  mac_policy_list_busy(void);
int   mac_policy_list_conditional_busy(void);
void  mac_policy_list_unbusy(void);

void           mac_labelzone_init(void);
struct label  *mac_labelzone_alloc(int flags);
void           mac_labelzone_free(struct label *label);

void  mac_label_init(struct label *label);
void  mac_label_destroy(struct label *label);
#if KERNEL
int   mac_check_structmac_consistent(struct user_mac *mac);
#else
int   mac_check_structmac_consistent(struct mac *mac);
#endif

int mac_cred_label_externalize(struct label *, char *e, char *out, size_t olen, int flags);
int mac_vnode_label_externalize(struct label *, char *e, char *out, size_t olen, int flags);

int mac_cred_label_internalize(struct label *label, char *string);
int mac_vnode_label_internalize(struct label *label, char *string);

/*
 * MAC_CHECK performs the designated check by walking the policy
 * module list and checking with each as to how it feels about the
 * request.  Note that it returns its value via 'error' in the scope
 * of the caller.
 */
#define MAC_CHECK(check, args...) do {                                  \
  struct mac_policy_conf *mpc;                                    \
  u_int i;                                                        \
                                                                        \
  error = 0;                                                      \
  for (i = 0; i < mac_policy_list.staticmax; i++) {               \
          mpc = mac_policy_list.entries[i].mpc;                   \
          if (mpc == NULL)                                        \
                  continue;                                       \
                                                                        \
          if (mpc->mpc_ops->mpo_ ## check != NULL)                \
                  error = mac_error_select(                       \
                      mpc->mpc_ops->mpo_ ## check (args),         \
                      error);                                     \
  }                                                               \
  if (mac_policy_list_conditional_busy() != 0) {                  \
          for (; i <= mac_policy_list.maxindex; i++) {            \
                  mpc = mac_policy_list.entries[i].mpc;           \
                  if (mpc == NULL)                                \
                          continue;                               \
                                                                        \
                  if (mpc->mpc_ops->mpo_ ## check != NULL)        \
                          error = mac_error_select(               \
                              mpc->mpc_ops->mpo_ ## check (args), \
                              error);                             \
          }                                                       \
          mac_policy_list_unbusy();                               \
  }                                                               \
} while (0)

/*
 * MAC_GRANT performs the designated check by walking the policy
 * module list and checking with each as to how it feels about the
 * request.  Unlike MAC_CHECK, it grants if any policies return '0',
 * and otherwise returns EPERM.  Note that it returns its value via
 * 'error' in the scope of the caller.
 */
#define MAC_GRANT(check, args...) do {                                  \
  struct mac_policy_conf *mpc;                                    \
  u_int i;                                                        \
                                                                        \
  error = EPERM;                                                  \
  for (i = 0; i < mac_policy_list.staticmax; i++) {               \
          mpc = mac_policy_list.entries[i].mpc;                   \
          if (mpc == NULL)                                        \
                  continue;                                       \
                                                                        \
          if (mpc->mpc_ops->mpo_ ## check != NULL) {              \
                  if (mpc->mpc_ops->mpo_ ## check (args) == 0)    \
                          error = 0;                              \
          }                                                       \
  }                                                               \
  if (mac_policy_list_conditional_busy() != 0) {                  \
          for (; i <= mac_policy_list.maxindex; i++) {            \
                  mpc = mac_policy_list.entries[i].mpc;           \
                  if (mpc == NULL)                                \
                          continue;                               \
                                                                        \
                  if (mpc->mpc_ops->mpo_ ## check != NULL) {      \
                          if (mpc->mpc_ops->mpo_ ## check (args)  \
                              == 0)                               \
                                  error = 0;                      \
                  }                                               \
          }                                                       \
          mac_policy_list_unbusy();                               \
  }                                                               \
} while (0)

/*
 * MAC_BOOLEAN performs the designated boolean composition by walking
 * the module list, invoking each instance of the operation, and
 * combining the results using the passed C operator.  Note that it
 * returns its value via 'result' in the scope of the caller, which
 * should be initialized by the caller in a meaningful way to get
 * a meaningful result.
 */
#define MAC_BOOLEAN(operation, composition, args...) do {               \
  struct mac_policy_conf *mpc;                                    \
  u_int i;                                                        \
                                                                        \
  for (i = 0; i < mac_policy_list.staticmax; i++) {               \
          mpc = mac_policy_list.entries[i].mpc;                   \
          if (mpc == NULL)                                        \
                  continue;                                       \
                                                                        \
          if (mpc->mpc_ops->mpo_ ## operation != NULL)            \
                  result = result composition                     \
                      mpc->mpc_ops->mpo_ ## operation             \
                      (args);                                     \
  }                                                               \
  if (mac_policy_list_conditional_busy() != 0) {                  \
          for (; i <= mac_policy_list.maxindex; i++) {            \
                  mpc = mac_policy_list.entries[i].mpc;           \
                  if (mpc == NULL)                                \
                          continue;                               \
                                                                        \
                  if (mpc->mpc_ops->mpo_ ## operation != NULL)    \
                          result = result composition             \
                              mpc->mpc_ops->mpo_ ## operation     \
                              (args);                             \
          }                                                       \
          mac_policy_list_unbusy();                               \
  }                                                               \
} while (0)

#define MAC_INTERNALIZE(obj, label, instring)                           \
  mac_internalize(offsetof(struct mac_policy_ops, mpo_ ## obj ## _label_internalize), label, instring)

#define MAC_EXTERNALIZE(obj, label, elementlist, outbuf, outbuflen)     \
  mac_externalize(offsetof(struct mac_policy_ops, mpo_ ## obj ## _label_externalize), label, elementlist, outbuf, outbuflen)

#define MAC_EXTERNALIZE_AUDIT(obj, label, outbuf, outbuflen)    \
  mac_externalize(offsetof(struct mac_policy_ops, mpo_ ## obj ## _label_externalize_audit), label, "*", outbuf, outbuflen)

/*
 * MAC_PERFORM performs the designated operation by walking the policy
 * module list and invoking that operation for each policy.
 */
#define MAC_PERFORM(operation, args...) do {                            \
  struct mac_policy_conf *mpc;                                    \
  u_int i;                                                        \
                                                                        \
  for (i = 0; i < mac_policy_list.staticmax; i++) {               \
          mpc = mac_policy_list.entries[i].mpc;                   \
          if (mpc == NULL)                                        \
                  continue;                                       \
                                                                        \
          if (mpc->mpc_ops->mpo_ ## operation != NULL)            \
                  mpc->mpc_ops->mpo_ ## operation (args);         \
  }                                                               \
  if (mac_policy_list_conditional_busy() != 0) {                  \
          for (; i <= mac_policy_list.maxindex; i++) {            \
                  mpc = mac_policy_list.entries[i].mpc;           \
                  if (mpc == NULL)                                \
                          continue;                               \
                                                                        \
                  if (mpc->mpc_ops->mpo_ ## operation != NULL)    \
                          mpc->mpc_ops->mpo_ ## operation (args); \
          }                                                       \
          mac_policy_list_unbusy();                               \
  }                                                               \
} while (0)

struct __mac_get_pid_args;
struct __mac_get_proc_args;
struct __mac_set_proc_args;
struct __mac_get_lcid_args;
struct __mac_get_fd_args;
struct __mac_get_file_args;
struct __mac_get_link_args;
struct __mac_set_fd_args;
struct __mac_set_file_args;
struct __mac_syscall_args;

void mac_policy_addto_labellist(const mac_policy_handle_t, int);
void mac_policy_removefrom_labellist(const mac_policy_handle_t);

int mac_externalize(size_t mpo_externalize_off, struct label *label,
    const char *elementlist, char *outbuf, size_t outbuflen);
int mac_internalize(size_t mpo_internalize_off, struct label *label,
    char *elementlist);
#endif  /* !_SECURITY_MAC_INTERNAL_H_ */

Coverage Report

Created: 2026-04-09 06:21

Line	Count	Source
1		/*
2		* Copyright (c) 2007 Apple Inc. All rights reserved.
3		*
4		* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5		*
6		* This file contains Original Code and/or Modifications of Original Code
7		* as defined in and that are subject to the Apple Public Source License
8		* Version 2.0 (the 'License'). You may not use this file except in
9		* compliance with the License. The rights granted to you under the License
10		* may not be used to create, or enable the creation or redistribution of,
11		* unlawful or unlicensed copies of an Apple operating system, or to
12		* circumvent, violate, or enable the circumvention or violation of, any
13		* terms of an Apple operating system software license agreement.
14		*
15		* Please obtain a copy of the License at
16		* http://www.opensource.apple.com/apsl/ and read it before using this file.
17		*
18		* The Original Code and all software distributed under the License are
19		* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20		* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21		* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22		* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23		* Please see the License for the specific language governing rights and
24		* limitations under the License.
25		*
26		* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27		*/
28
29		/*-
30		* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
31		* Copyright (c) 2001 Ilmar S. Habibulin
32		* Copyright (c) 2001, 2002, 2003, 2004 Networks Associates Technology, Inc.
33		* Copyright (c) 2005 SPARTA, Inc.
34		* All rights reserved.
35		*
36		* This software was developed by Robert Watson and Ilmar Habibulin for the
37		* TrustedBSD Project.
38		*
39		* This software was developed for the FreeBSD Project in part by Network
40		* Associates Laboratories, the Security Research Division of Network
41		* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
42		* as part of the DARPA CHATS research program.
43		*
44		* Redistribution and use in source and binary forms, with or without
45		* modification, are permitted provided that the following conditions
46		* are met:
47		* 1. Redistributions of source code must retain the above copyright
48		* notice, this list of conditions and the following disclaimer.
49		* 2. Redistributions in binary form must reproduce the above copyright
50		* notice, this list of conditions and the following disclaimer in the
51		* documentation and/or other materials provided with the distribution.
52		*
53		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
54		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56		* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
57		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63		* SUCH DAMAGE.
64		*
65		*/
66
67		#ifndef _SECURITY_MAC_INTERNAL_H_
68		#define _SECURITY_MAC_INTERNAL_H_
69
70		#ifndef PRIVATE
71		#warning "MAC policy is not KPI, see Technical Q&A QA1574, this header will be removed in next version"
72		#endif
73
74		#include <string.h>
75		#include <sys/param.h>
76		#include <sys/queue.h>
77		#include <security/mac.h>
78		#include <security/mac_framework.h>
79		#include <security/mac_policy.h>
80		#include <security/mac_data.h>
81		#include <sys/sysctl.h>
82		#include <kern/locks.h>
83		#include <sys/kernel.h>
84		#include <sys/lock.h>
85		#include <sys/malloc.h>
86		#include <sys/sbuf.h>
87		#include <sys/proc.h>
88		#include <sys/systm.h>
89		#include <sys/socket.h>
90		#include <sys/socketvar.h>
91		#include <sys/vnode.h>
92
93		/*
94		* MAC Framework sysctl namespace.
95		*/
96
97		SYSCTL_DECL(_security);
98		SYSCTL_DECL(_security_mac);
99
100		extern int mac_late;
101
102		struct mac_policy_list_element {
103		struct mac_policy_conf *mpc;
104		};
105
106		struct mac_policy_list {
107		u_int numloaded;
108		u_int max;
109		u_int maxindex;
110		u_int staticmax;
111		u_int chunks;
112		u_int freehint;
113		struct mac_policy_list_element *entries;
114		};
115
116		typedef struct mac_policy_list mac_policy_list_t;
117
118
119		/*
120		* Policy that has registered with the framework for a specific
121		* label namespace name.
122		*/
123		struct mac_label_listener {
124		mac_policy_handle_t mll_handle;
125		LIST_ENTRY(mac_label_listener) mll_list;
126		};
127
128		LIST_HEAD(mac_label_listeners_t, mac_label_listener);
129
130		/*
131		* Type of list used to manage label namespace names.
132		*/
133		struct mac_label_element {
134		char mle_name[MAC_MAX_LABEL_ELEMENT_NAME];
135		struct mac_label_listeners_t mle_listeners;
136		LIST_ENTRY(mac_label_element) mle_list;
137		};
138
139		LIST_HEAD(mac_label_element_list_t, mac_label_element);
140
141		/*
142		* MAC Framework global variables.
143		*/
144
145		extern struct mac_label_element_list_t mac_label_element_list;
146		extern struct mac_label_element_list_t mac_static_label_element_list;
147
148		extern struct mac_policy_list mac_policy_list;
149
150		/*
151		* global flags to control whether a MACF subsystem is configured
152		* at all in the system.
153		*/
154		extern unsigned int mac_device_enforce;
155		extern unsigned int mac_pipe_enforce;
156		extern unsigned int mac_posixsem_enforce;
157		extern unsigned int mac_posixshm_enforce;
158		extern unsigned int mac_proc_enforce;
159		extern unsigned int mac_socket_enforce;
160		extern unsigned int mac_system_enforce;
161		extern unsigned int mac_sysvmsg_enforce;
162		extern unsigned int mac_sysvsem_enforce;
163		extern unsigned int mac_sysvshm_enforce;
164		extern unsigned int mac_vm_enforce;
165		extern unsigned int mac_vnode_enforce;
166
167		extern unsigned int mac_label_vnodes;
168		extern unsigned int mac_vnode_label_count;
169
170		static bool mac_proc_check_enforce(proc_t p);
171
172		static __inline__ bool
173		mac_proc_check_enforce(proc_t p)
174	0	{
175	0	#if CONFIG_MACF
176	0	// Don't apply policies to the kernel itself.
177	0	return p != kernproc;
178	0	#else
179	0	#pragma unused(p)
180	0	return false;
181	0	#endif // CONFIG_MACF
182	0	}
183
184		static bool mac_cred_check_enforce(kauth_cred_t cred);
185
186		static __inline__ bool
187		mac_cred_check_enforce(kauth_cred_t cred)
188	0	{
189	0	#if CONFIG_MACF
190	0	return cred != proc_ucred(kernproc);
191	0	#else
192	0	#pragma unused(p)
193	0	return false;
194	0	#endif // CONFIG_MACF
195	0	}
196
197		/*
198		* MAC Framework infrastructure functions.
199		*/
200
201		int mac_error_select(int error1, int error2);
202
203		void mac_policy_list_busy(void);
204		int mac_policy_list_conditional_busy(void);
205		void mac_policy_list_unbusy(void);
206
207		void mac_labelzone_init(void);
208		struct label *mac_labelzone_alloc(int flags);
209		void mac_labelzone_free(struct label *label);
210
211		void mac_label_init(struct label *label);
212		void mac_label_destroy(struct label *label);
213		#if KERNEL
214		int mac_check_structmac_consistent(struct user_mac *mac);
215		#else
216		int mac_check_structmac_consistent(struct mac *mac);
217		#endif
218
219		int mac_cred_label_externalize(struct label , char e, char *out, size_t olen, int flags);
220		int mac_vnode_label_externalize(struct label , char e, char *out, size_t olen, int flags);
221
222		int mac_cred_label_internalize(struct label label, char string);
223		int mac_vnode_label_internalize(struct label label, char string);
224
225		/*
226		* MAC_CHECK performs the designated check by walking the policy
227		* module list and checking with each as to how it feels about the
228		* request. Note that it returns its value via 'error' in the scope
229		* of the caller.
230		*/
231	0	#define MAC_CHECK(check, args...) do { \
232	0	struct mac_policy_conf *mpc; \
233	0	u_int i; \
234	0	\
235	0	error = 0; \
236	0	for (i = 0; i < mac_policy_list.staticmax; i++) { \
237	0	mpc = mac_policy_list.entries[i].mpc; \
238	0	if (mpc == NULL) \
239	0	continue; \
240	0	\
241	0	if (mpc->mpc_ops->mpo_ ## check != NULL) \
242	0	error = mac_error_select( \
243	0	mpc->mpc_ops->mpo_ ## check (args), \
244	0	error); \
245	0	} \
246	0	if (mac_policy_list_conditional_busy() != 0) { \
247	0	for (; i <= mac_policy_list.maxindex; i++) { \
248	0	mpc = mac_policy_list.entries[i].mpc; \
249	0	if (mpc == NULL) \
250	0	continue; \
251	0	\
252	0	if (mpc->mpc_ops->mpo_ ## check != NULL) \
253	0	error = mac_error_select( \
254	0	mpc->mpc_ops->mpo_ ## check (args), \
255	0	error); \
256	0	} \
257	0	mac_policy_list_unbusy(); \
258	0	} \
259	0	} while (0)
260
261		/*
262		* MAC_GRANT performs the designated check by walking the policy
263		* module list and checking with each as to how it feels about the
264		* request. Unlike MAC_CHECK, it grants if any policies return '0',
265		* and otherwise returns EPERM. Note that it returns its value via
266		* 'error' in the scope of the caller.
267		*/
268		#define MAC_GRANT(check, args...) do { \
269		struct mac_policy_conf *mpc; \
270		u_int i; \
271		\
272		error = EPERM; \
273		for (i = 0; i < mac_policy_list.staticmax; i++) { \
274		mpc = mac_policy_list.entries[i].mpc; \
275		if (mpc == NULL) \
276		continue; \
277		\
278		if (mpc->mpc_ops->mpo_ ## check != NULL) { \
279		if (mpc->mpc_ops->mpo_ ## check (args) == 0) \
280		error = 0; \
281		} \
282		} \
283		if (mac_policy_list_conditional_busy() != 0) { \
284		for (; i <= mac_policy_list.maxindex; i++) { \
285		mpc = mac_policy_list.entries[i].mpc; \
286		if (mpc == NULL) \
287		continue; \
288		\
289		if (mpc->mpc_ops->mpo_ ## check != NULL) { \
290		if (mpc->mpc_ops->mpo_ ## check (args) \
291		== 0) \
292		error = 0; \
293		} \
294		} \
295		mac_policy_list_unbusy(); \
296		} \
297		} while (0)
298
299		/*
300		* MAC_BOOLEAN performs the designated boolean composition by walking
301		* the module list, invoking each instance of the operation, and
302		* combining the results using the passed C operator. Note that it
303		* returns its value via 'result' in the scope of the caller, which
304		* should be initialized by the caller in a meaningful way to get
305		* a meaningful result.
306		*/
307		#define MAC_BOOLEAN(operation, composition, args...) do { \
308		struct mac_policy_conf *mpc; \
309		u_int i; \
310		\
311		for (i = 0; i < mac_policy_list.staticmax; i++) { \
312		mpc = mac_policy_list.entries[i].mpc; \
313		if (mpc == NULL) \
314		continue; \
315		\
316		if (mpc->mpc_ops->mpo_ ## operation != NULL) \
317		result = result composition \
318		mpc->mpc_ops->mpo_ ## operation \
319		(args); \
320		} \
321		if (mac_policy_list_conditional_busy() != 0) { \
322		for (; i <= mac_policy_list.maxindex; i++) { \
323		mpc = mac_policy_list.entries[i].mpc; \
324		if (mpc == NULL) \
325		continue; \
326		\
327		if (mpc->mpc_ops->mpo_ ## operation != NULL) \
328		result = result composition \
329		mpc->mpc_ops->mpo_ ## operation \
330		(args); \
331		} \
332		mac_policy_list_unbusy(); \
333		} \
334		} while (0)
335
336		#define MAC_INTERNALIZE(obj, label, instring) \
337		mac_internalize(offsetof(struct mac_policy_ops, mpo_ ## obj ## _label_internalize), label, instring)
338
339		#define MAC_EXTERNALIZE(obj, label, elementlist, outbuf, outbuflen) \
340		mac_externalize(offsetof(struct mac_policy_ops, mpo_ ## obj ## _label_externalize), label, elementlist, outbuf, outbuflen)
341
342		#define MAC_EXTERNALIZE_AUDIT(obj, label, outbuf, outbuflen) \
343		mac_externalize(offsetof(struct mac_policy_ops, mpo_ ## obj ## _label_externalize_audit), label, "*", outbuf, outbuflen)
344
345		/*
346		* MAC_PERFORM performs the designated operation by walking the policy
347		* module list and invoking that operation for each policy.
348		*/
349		#define MAC_PERFORM(operation, args...) do { \
350		struct mac_policy_conf *mpc; \
351		u_int i; \
352		\
353		for (i = 0; i < mac_policy_list.staticmax; i++) { \
354		mpc = mac_policy_list.entries[i].mpc; \
355		if (mpc == NULL) \
356		continue; \
357		\
358		if (mpc->mpc_ops->mpo_ ## operation != NULL) \
359		mpc->mpc_ops->mpo_ ## operation (args); \
360		} \
361		if (mac_policy_list_conditional_busy() != 0) { \
362		for (; i <= mac_policy_list.maxindex; i++) { \
363		mpc = mac_policy_list.entries[i].mpc; \
364		if (mpc == NULL) \
365		continue; \
366		\
367		if (mpc->mpc_ops->mpo_ ## operation != NULL) \
368		mpc->mpc_ops->mpo_ ## operation (args); \
369		} \
370		mac_policy_list_unbusy(); \
371		} \
372		} while (0)
373
374		struct __mac_get_pid_args;
375		struct __mac_get_proc_args;
376		struct __mac_set_proc_args;
377		struct __mac_get_lcid_args;
378		struct __mac_get_fd_args;
379		struct __mac_get_file_args;
380		struct __mac_get_link_args;
381		struct __mac_set_fd_args;
382		struct __mac_set_file_args;
383		struct __mac_syscall_args;
384
385		void mac_policy_addto_labellist(const mac_policy_handle_t, int);
386		void mac_policy_removefrom_labellist(const mac_policy_handle_t);
387
388		int mac_externalize(size_t mpo_externalize_off, struct label *label,
389		const char elementlist, char outbuf, size_t outbuflen);
390		int mac_internalize(size_t mpo_internalize_off, struct label *label,
391		char *elementlist);
392		#endif /* !_SECURITY_MAC_INTERNAL_H_ */