1/*
2 * Copyright (c) 2003 Apple Computer, 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 * @OSF_COPYRIGHT@
30 */
31
32/*
33 * Define a service to map from a kernel-generated port name
34 * to server-defined "type" and "value" data to be associated
35 * with the port.
36 */
37
38#ifndef PORT_OBJ_H
39#define PORT_OBJ_H
40
41#include <mach/port.h>
42
43struct port_obj_tentry {
44	void *pos_value;
45	int pos_type;
46};
47
48#include <sys/cdefs.h>
49
50__BEGIN_DECLS
51extern void port_obj_init(int);
52__END_DECLS
53
54extern struct port_obj_tentry *port_obj_table;
55extern int port_obj_table_size;
56
57#ifndef PORT_OBJ_ASSERT
58
59#define port_set_obj_value_type(pname, value, type)	\
60do {							\
61	int ndx;					\
62							\
63	if (!port_obj_table)				\
64		port_obj_init(port_obj_table_size);	\
65	ndx = MACH_PORT_INDEX(pname);			\
66	port_obj_table[ndx].pos_value = (value);	\
67	port_obj_table[ndx].pos_type = (type);		\
68} while (0)
69
70#define port_get_obj_value(pname)			\
71	(port_obj_table[MACH_PORT_INDEX(pname)].pos_value)
72
73#define port_get_obj_type(pname)			\
74	(port_obj_table[MACH_PORT_INDEX(pname)].pos_type)
75
76#else	/* PORT_OBJ_ASSERT */
77
78#define port_set_obj_value_type(pname, value, type)	\
79do {							\
80	int ndx;					\
81							\
82	if (!port_obj_table)				\
83		port_obj_init(port_obj_table_size);	\
84	ndx = MACH_PORT_INDEX(pname);			\
85	assert(ndx > 0);				\
86	assert(ndx < port_obj_table_size);		\
87	port_obj_table[ndx].pos_value = (value);	\
88	port_obj_table[ndx].pos_type = (type);		\
89} while (0)
90
91#define port_get_obj_value(pname)				\
92	((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?	\
93	port_obj_table[MACH_PORT_INDEX(pname)].pos_value :	\
94	(panic("port_get_obj_value: index too big"), (void *)-1))
95
96#define port_get_obj_type(pname)				\
97	((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?	\
98	port_obj_table[MACH_PORT_INDEX(pname)].pos_type :	\
99	(panic("port_get_obj_type: index too big"), -1))
100
101#endif	/* PORT_OBJ_ASSERT */
102
103#endif	/* PORT_OBJ_H */
104