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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: mach/port.h
*
* Definition of a port
*
* [The basic mach_port_t type should probably be machine-dependent,
* as it must be represented by a 32-bit integer.]
*/
#ifndef _MACH_PORT_H_
#define _MACH_PORT_H_
#include <mach/boolean.h>
#include <mach/machine/vm_types.h>
typedef natural_t mach_port_t;
typedef mach_port_t *mach_port_array_t;
typedef int *rpc_signature_info_t;
/*
* MACH_PORT_NULL is a legal value that can be carried in messages.
* It indicates the absence of any port or port rights. (A port
* argument keeps the message from being "simple", even if the
* value is MACH_PORT_NULL.) The value MACH_PORT_DEAD is also
* a legal value that can be carried in messages. It indicates
* that a port right was present, but it died.
*/
#define MACH_PORT_NULL ((mach_port_t) 0)
#define MACH_PORT_DEAD ((mach_port_t) ~0)
#define MACH_PORT_VALID(name) \
(((name) != MACH_PORT_NULL) && ((name) != MACH_PORT_DEAD))
/*
* These are the different rights a task may have.
* The MACH_PORT_RIGHT_* definitions are used as arguments
* to mach_port_allocate, mach_port_get_refs, etc, to specify
* a particular right to act upon. The mach_port_names and
* mach_port_type calls return bitmasks using the MACH_PORT_TYPE_*
* definitions. This is because a single name may denote
* multiple rights.
*/
typedef natural_t mach_port_right_t;
#define MACH_PORT_RIGHT_SEND ((mach_port_right_t) 0)
#define MACH_PORT_RIGHT_RECEIVE ((mach_port_right_t) 1)
#define MACH_PORT_RIGHT_SEND_ONCE ((mach_port_right_t) 2)
#define MACH_PORT_RIGHT_PORT_SET ((mach_port_right_t) 3)
#define MACH_PORT_RIGHT_DEAD_NAME ((mach_port_right_t) 4)
#define MACH_PORT_RIGHT_NUMBER ((mach_port_right_t) 5)
typedef natural_t mach_port_type_t;
typedef mach_port_type_t *mach_port_type_array_t;
#define MACH_PORT_TYPE(right) ((mach_port_type_t)(1 << ((right)+16)))
#define MACH_PORT_TYPE_NONE ((mach_port_type_t) 0)
#define MACH_PORT_TYPE_SEND MACH_PORT_TYPE(MACH_PORT_RIGHT_SEND)
#define MACH_PORT_TYPE_RECEIVE MACH_PORT_TYPE(MACH_PORT_RIGHT_RECEIVE)
#define MACH_PORT_TYPE_SEND_ONCE MACH_PORT_TYPE(MACH_PORT_RIGHT_SEND_ONCE)
#define MACH_PORT_TYPE_PORT_SET MACH_PORT_TYPE(MACH_PORT_RIGHT_PORT_SET)
#define MACH_PORT_TYPE_DEAD_NAME MACH_PORT_TYPE(MACH_PORT_RIGHT_DEAD_NAME)
/* Convenient combinations. */
#define MACH_PORT_TYPE_SEND_RECEIVE \
(MACH_PORT_TYPE_SEND|MACH_PORT_TYPE_RECEIVE)
#define MACH_PORT_TYPE_SEND_RIGHTS \
(MACH_PORT_TYPE_SEND|MACH_PORT_TYPE_SEND_ONCE)
#define MACH_PORT_TYPE_PORT_RIGHTS \
(MACH_PORT_TYPE_SEND_RIGHTS|MACH_PORT_TYPE_RECEIVE)
#define MACH_PORT_TYPE_PORT_OR_DEAD \
(MACH_PORT_TYPE_PORT_RIGHTS|MACH_PORT_TYPE_DEAD_NAME)
#define MACH_PORT_TYPE_ALL_RIGHTS \
(MACH_PORT_TYPE_PORT_OR_DEAD|MACH_PORT_TYPE_PORT_SET)
/* Dummy type bits that mach_port_type/mach_port_names can return. */
#define MACH_PORT_TYPE_DNREQUEST 0x80000000U
#define MACH_PORT_TYPE_MAREQUEST 0x40000000
#define MACH_PORT_TYPE_COMPAT 0x20000000
/* User-references for capabilities. */
typedef natural_t mach_port_urefs_t;
typedef integer_t mach_port_delta_t; /* change in urefs */
/* Attributes of ports. (See mach_port_get_receive_status.) */
typedef natural_t mach_port_seqno_t; /* sequence number */
typedef unsigned int mach_port_mscount_t; /* make-send count */
typedef unsigned int mach_port_msgcount_t; /* number of msgs */
typedef unsigned int mach_port_rights_t; /* number of rights */
typedef struct mach_port_status {
mach_port_t mps_pset; /* containing port set */
mach_port_seqno_t mps_seqno; /* sequence number */
/*mach_port_mscount_t*/natural_t mps_mscount; /* make-send count */
/*mach_port_msgcount_t*/natural_t mps_qlimit; /* queue limit */
/*mach_port_msgcount_t*/natural_t mps_msgcount; /* number in the queue */
/*mach_port_rights_t*/natural_t mps_sorights; /* how many send-once rights */
/*boolean_t*/natural_t mps_srights; /* do send rights exist? */
/*boolean_t*/natural_t mps_pdrequest; /* port-deleted requested? */
/*boolean_t*/natural_t mps_nsrequest; /* no-senders requested? */
} mach_port_status_t;
#define MACH_PORT_QLIMIT_DEFAULT ((mach_port_msgcount_t) 5)
#define MACH_PORT_QLIMIT_MAX ((mach_port_msgcount_t) 16)
/*
* Compatibility definitions, for code written
* before there was an mps_seqno field.
*/
typedef struct old_mach_port_status {
mach_port_t mps_pset; /* containing port set */
/*mach_port_mscount_t*/natural_t mps_mscount; /* make-send count */
/*mach_port_msgcount_t*/natural_t mps_qlimit; /* queue limit */
/*mach_port_msgcount_t*/natural_t mps_msgcount; /* number in the queue */
/*mach_port_rights_t*/natural_t mps_sorights; /* how many send-once rights */
/*boolean_t*/natural_t mps_srights; /* do send rights exist? */
/*boolean_t*/natural_t mps_pdrequest; /* port-deleted requested? */
/*boolean_t*/natural_t mps_nsrequest; /* no-senders requested? */
} old_mach_port_status_t;
#endif /* _MACH_PORT_H_ */
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