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1.1 root 1: /*
2: * Mach Operating System
3: * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
4: * All Rights Reserved.
5: *
6: * Permission to use, copy, modify and distribute this software and its
7: * documentation is hereby granted, provided that both the copyright
8: * notice and this permission notice appear in all copies of the
9: * software, derivative works or modified versions, and any portions
10: * thereof, and that both notices appear in supporting documentation.
11: *
12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15: *
16: * Carnegie Mellon requests users of this software to return to
17: *
18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
22: *
23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
25: */
26: /*
27: * File: mach/port.h
28: *
29: * Definition of a port
30: *
31: * [The basic mach_port_t type should probably be machine-dependent,
32: * as it must be represented by a 32-bit integer.]
33: */
34:
35: #ifndef _MACH_PORT_H_
36: #define _MACH_PORT_H_
37:
38: #include <mach/boolean.h>
39: #include <mach/machine/vm_types.h>
40:
41:
1.1.1.2 ! root 42: typedef vm_offset_t mach_port_t;
1.1 root 43: typedef mach_port_t *mach_port_array_t;
44: typedef int *rpc_signature_info_t;
45:
46: /*
47: * MACH_PORT_NULL is a legal value that can be carried in messages.
48: * It indicates the absence of any port or port rights. (A port
49: * argument keeps the message from being "simple", even if the
50: * value is MACH_PORT_NULL.) The value MACH_PORT_DEAD is also
51: * a legal value that can be carried in messages. It indicates
52: * that a port right was present, but it died.
53: */
54:
55: #define MACH_PORT_NULL ((mach_port_t) 0)
56: #define MACH_PORT_DEAD ((mach_port_t) ~0)
57:
58: #define MACH_PORT_VALID(name) \
59: (((name) != MACH_PORT_NULL) && ((name) != MACH_PORT_DEAD))
60:
61: /*
62: * These are the different rights a task may have.
63: * The MACH_PORT_RIGHT_* definitions are used as arguments
64: * to mach_port_allocate, mach_port_get_refs, etc, to specify
65: * a particular right to act upon. The mach_port_names and
66: * mach_port_type calls return bitmasks using the MACH_PORT_TYPE_*
67: * definitions. This is because a single name may denote
68: * multiple rights.
69: */
70:
71: typedef natural_t mach_port_right_t;
72:
73: #define MACH_PORT_RIGHT_SEND ((mach_port_right_t) 0)
74: #define MACH_PORT_RIGHT_RECEIVE ((mach_port_right_t) 1)
75: #define MACH_PORT_RIGHT_SEND_ONCE ((mach_port_right_t) 2)
76: #define MACH_PORT_RIGHT_PORT_SET ((mach_port_right_t) 3)
77: #define MACH_PORT_RIGHT_DEAD_NAME ((mach_port_right_t) 4)
78: #define MACH_PORT_RIGHT_NUMBER ((mach_port_right_t) 5)
79:
80: typedef natural_t mach_port_type_t;
81: typedef mach_port_type_t *mach_port_type_array_t;
82:
83: #define MACH_PORT_TYPE(right) ((mach_port_type_t)(1 << ((right)+16)))
84: #define MACH_PORT_TYPE_NONE ((mach_port_type_t) 0)
85: #define MACH_PORT_TYPE_SEND MACH_PORT_TYPE(MACH_PORT_RIGHT_SEND)
86: #define MACH_PORT_TYPE_RECEIVE MACH_PORT_TYPE(MACH_PORT_RIGHT_RECEIVE)
87: #define MACH_PORT_TYPE_SEND_ONCE MACH_PORT_TYPE(MACH_PORT_RIGHT_SEND_ONCE)
88: #define MACH_PORT_TYPE_PORT_SET MACH_PORT_TYPE(MACH_PORT_RIGHT_PORT_SET)
89: #define MACH_PORT_TYPE_DEAD_NAME MACH_PORT_TYPE(MACH_PORT_RIGHT_DEAD_NAME)
90:
91: /* Convenient combinations. */
92:
93: #define MACH_PORT_TYPE_SEND_RECEIVE \
94: (MACH_PORT_TYPE_SEND|MACH_PORT_TYPE_RECEIVE)
95: #define MACH_PORT_TYPE_SEND_RIGHTS \
96: (MACH_PORT_TYPE_SEND|MACH_PORT_TYPE_SEND_ONCE)
97: #define MACH_PORT_TYPE_PORT_RIGHTS \
98: (MACH_PORT_TYPE_SEND_RIGHTS|MACH_PORT_TYPE_RECEIVE)
99: #define MACH_PORT_TYPE_PORT_OR_DEAD \
100: (MACH_PORT_TYPE_PORT_RIGHTS|MACH_PORT_TYPE_DEAD_NAME)
101: #define MACH_PORT_TYPE_ALL_RIGHTS \
102: (MACH_PORT_TYPE_PORT_OR_DEAD|MACH_PORT_TYPE_PORT_SET)
103:
104: /* Dummy type bits that mach_port_type/mach_port_names can return. */
105:
106: #define MACH_PORT_TYPE_DNREQUEST 0x80000000U
107: #define MACH_PORT_TYPE_MAREQUEST 0x40000000
108: #define MACH_PORT_TYPE_COMPAT 0x20000000
109:
110: /* User-references for capabilities. */
111:
112: typedef natural_t mach_port_urefs_t;
113: typedef integer_t mach_port_delta_t; /* change in urefs */
114:
115: /* Attributes of ports. (See mach_port_get_receive_status.) */
116:
117: typedef natural_t mach_port_seqno_t; /* sequence number */
118: typedef unsigned int mach_port_mscount_t; /* make-send count */
119: typedef unsigned int mach_port_msgcount_t; /* number of msgs */
120: typedef unsigned int mach_port_rights_t; /* number of rights */
121:
122: typedef struct mach_port_status {
123: mach_port_t mps_pset; /* containing port set */
124: mach_port_seqno_t mps_seqno; /* sequence number */
125: /*mach_port_mscount_t*/natural_t mps_mscount; /* make-send count */
126: /*mach_port_msgcount_t*/natural_t mps_qlimit; /* queue limit */
127: /*mach_port_msgcount_t*/natural_t mps_msgcount; /* number in the queue */
128: /*mach_port_rights_t*/natural_t mps_sorights; /* how many send-once rights */
129: /*boolean_t*/natural_t mps_srights; /* do send rights exist? */
130: /*boolean_t*/natural_t mps_pdrequest; /* port-deleted requested? */
131: /*boolean_t*/natural_t mps_nsrequest; /* no-senders requested? */
132: } mach_port_status_t;
133:
134: #define MACH_PORT_QLIMIT_DEFAULT ((mach_port_msgcount_t) 5)
135: #define MACH_PORT_QLIMIT_MAX ((mach_port_msgcount_t) 16)
136:
137: /*
138: * Compatibility definitions, for code written
139: * before there was an mps_seqno field.
140: */
141:
142: typedef struct old_mach_port_status {
143: mach_port_t mps_pset; /* containing port set */
144: /*mach_port_mscount_t*/natural_t mps_mscount; /* make-send count */
145: /*mach_port_msgcount_t*/natural_t mps_qlimit; /* queue limit */
146: /*mach_port_msgcount_t*/natural_t mps_msgcount; /* number in the queue */
147: /*mach_port_rights_t*/natural_t mps_sorights; /* how many send-once rights */
148: /*boolean_t*/natural_t mps_srights; /* do send rights exist? */
149: /*boolean_t*/natural_t mps_pdrequest; /* port-deleted requested? */
150: /*boolean_t*/natural_t mps_nsrequest; /* no-senders requested? */
151: } old_mach_port_status_t;
152:
153: #endif /* _MACH_PORT_H_ */
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