This is xnu-8019. See this file in:
/*
 * Copyright (c) 1999 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@
 */
/*
 *	File:	slot_name.c
 *	Author:	Avadis Tevanian, Jr.
 *
 *	Copyright (C) 1987, Avadis Tevanian, Jr.
 *
 *	Convert machine slot values to human readable strings.
 *
 * HISTORY
 * 26-Jan-88  Mary Thompson (mrt) at Carnegie Mellon
 *	added case for CUP_SUBTYPE_RT_APC
 *
 * 28-Feb-87  Avadis Tevanian (avie) at Carnegie-Mellon University
 *	Created.
 *
 */

#include <mach/mach.h>
#include <stddef.h>

kern_return_t
msg_rpc(void)
{
	return KERN_FAILURE;
}

kern_return_t
msg_send(void)
{
	return KERN_FAILURE;
}

kern_return_t
msg_receive(void)
{
	return KERN_FAILURE;
}

mach_port_t
task_self_(void)
{
	return mach_task_self();
}

mach_port_t
host_self(void)
{
	return mach_host_self();
}