/*
 * Copyright (c) 1999-2014 Apple Computer, 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@
 */
/*
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 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.
 */

/*
 *  Includes all the types that a normal user
 *  of Mach programs should need
 */

#ifndef _MACH_H_
#define _MACH_H_

#define __MACH30__
#define MACH_IPC_FLAVOR UNTYPED

#include <mach/std_types.h>
#include <mach/mach_types.h>
#include <mach/mach_interface.h>
#include <mach/mach_port.h>
#include <mach/mach_init.h>
#include <mach/mach_host.h>
#include <mach/thread_switch.h>

#include <mach/rpc.h>           /* for compatibility only */
#include <mach/mig.h>

#include <mach/mig_errors.h>
#include <mach/mach_error.h>

#include <sys/cdefs.h>

__BEGIN_DECLS
/*
 * Standard prototypes
 */
extern void                     panic_init(mach_port_t);
extern void                     panic(const char *, ...);

extern void                     safe_gets(char *,
    char *,
    int);

extern void                     slot_name(cpu_type_t,
    cpu_subtype_t,
    char **,
    char **);

extern void                     mig_reply_setup(mach_msg_header_t *,
    mach_msg_header_t *);

__WATCHOS_PROHIBITED __TVOS_PROHIBITED
extern void                     mach_msg_destroy(mach_msg_header_t *);

__WATCHOS_PROHIBITED __TVOS_PROHIBITED
extern mach_msg_return_t        mach_msg_receive(mach_msg_header_t *);

__WATCHOS_PROHIBITED __TVOS_PROHIBITED
extern mach_msg_return_t        mach_msg_send(mach_msg_header_t *);

__WATCHOS_PROHIBITED __TVOS_PROHIBITED
extern mach_msg_return_t        mach_msg_server_once(boolean_t (*)
    (mach_msg_header_t *,
    mach_msg_header_t *),
    mach_msg_size_t,
    mach_port_t,
    mach_msg_options_t);

__WATCHOS_PROHIBITED __TVOS_PROHIBITED
extern mach_msg_return_t        mach_msg_server(boolean_t (*)
    (mach_msg_header_t *,
    mach_msg_header_t *),
    mach_msg_size_t,
    mach_port_t,
    mach_msg_options_t);

__WATCHOS_PROHIBITED __TVOS_PROHIBITED
extern mach_msg_return_t        mach_msg_server_importance(boolean_t (*)
    (mach_msg_header_t *,
    mach_msg_header_t *),
    mach_msg_size_t,
    mach_port_t,
    mach_msg_options_t);

/*
 * Prototypes for compatibility
 */
extern kern_return_t    clock_get_res(mach_port_t,
    clock_res_t *);
extern kern_return_t    clock_set_res(mach_port_t,
    clock_res_t);

extern kern_return_t    clock_sleep(mach_port_t,
    int,
    mach_timespec_t,
    mach_timespec_t *);

/*!
 * @group voucher_mach_msg Prototypes
 */

#define VOUCHER_MACH_MSG_API_VERSION 20140205

/*!
 * @typedef voucher_mach_msg_state_t
 *
 * @abstract
 * Opaque object encapsulating state changed by voucher_mach_msg_adopt().
 */
typedef struct voucher_mach_msg_state_s *voucher_mach_msg_state_t;

/*!
 * @const VOUCHER_MACH_MSG_STATE_UNCHANGED
 *
 * @discussion
 * Constant indicating no state change occurred.
 */
#define VOUCHER_MACH_MSG_STATE_UNCHANGED ((voucher_mach_msg_state_t)~0ul)

/*!
 * @function voucher_mach_msg_set
 *
 * @abstract
 * Change specified message header to contain current mach voucher with a
 * COPY_SEND disposition.
 * Does not change message if it already has non-zero MACH_MSGH_BITS_VOUCHER.
 *
 * @discussion
 * Borrows reference to current thread voucher so message should be sent
 * immediately (without intervening calls that might change that voucher).
 *
 * @param msg
 * The message to modify.
 *
 * @result
 * True if header was changed.
 */
extern boolean_t voucher_mach_msg_set(mach_msg_header_t *msg);

/*!
 * @function voucher_mach_msg_clear
 *
 * @abstract
 * Removes changes made to specified message header by voucher_mach_msg_set()
 * and any mach_msg() send operations (successful or not).
 * If the message is not needed further, mach_msg_destroy() should be called
 * instead.
 *
 * @discussion
 * Not intended to be called if voucher_mach_msg_set() returned false.
 * Releases reference to message mach voucher if an extra reference was
 * acquired due to an unsuccessful send operation (pseudo-receive).
 *
 * @param msg
 * The message to modify.
 */
extern void voucher_mach_msg_clear(mach_msg_header_t *msg);

/*!
 * @function voucher_mach_msg_adopt
 *
 * @abstract
 * Adopt the voucher contained in the specified message on the current thread
 * and return the previous thread voucher state.
 *
 * @discussion
 * Ownership of the mach voucher in the message is transferred to the current
 * thread and the message header voucher fields are cleared.
 *
 * @param msg
 * The message to query and modify.
 *
 * @result
 * The previous thread voucher state or VOUCHER_MACH_MSG_STATE_UNCHANGED if no
 * state change occurred.
 */
extern voucher_mach_msg_state_t voucher_mach_msg_adopt(mach_msg_header_t *msg);

/*!
 * @function voucher_mach_msg_revert
 *
 * @abstract
 * Restore thread voucher state previously modified by voucher_mach_msg_adopt().
 *
 * @discussion
 * Current thread voucher reference is released.
 * No change to thread voucher state if passed VOUCHER_MACH_MSG_STATE_UNCHANGED.
 *
 * @param state
 * The thread voucher state to restore.
 */

extern void voucher_mach_msg_revert(voucher_mach_msg_state_t state);

__END_DECLS

#endif  /* _MACH_H_ */
