/*
* Copyright (c) 2000-2020 Apple 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@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* 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.
*/
/*
* NOTICE: This file was modified by McAfee Research in 2004 to introduce
* support for mandatory and extensible security protections. This notice
* is included in support of clause 2.2 (b) of the Apple Public License,
* Version 2.0.
* Copyright (c) 2005 SPARTA, Inc.
*/
/*
*/
/*
* File: ipc/ipc_init.c
* Author: Rich Draves
* Date: 1989
*
* Functions to initialize the IPC system.
*/
#include <mach/port.h>
#include <mach/message.h>
#include <mach/kern_return.h>
#include <kern/kern_types.h>
#include <kern/arcade.h>
#include <kern/kalloc.h>
#include <kern/simple_lock.h>
#include <kern/mach_param.h>
#include <kern/ipc_host.h>
#include <kern/ipc_kobject.h>
#include <kern/ipc_mig.h>
#include <kern/host_notify.h>
#include <kern/misc_protos.h>
#include <kern/sync_sema.h>
#include <kern/ux_handler.h>
#include <vm/vm_map_xnu.h>
#include <vm/vm_kern_xnu.h>
#include <ipc/ipc_entry.h>
#include <ipc/ipc_space.h>
#include <ipc/ipc_object.h>
#include <ipc/ipc_port.h>
#include <ipc/ipc_pset.h>
#include <ipc/ipc_notify.h>
#include <ipc/ipc_kmsg.h>
#include <ipc/ipc_hash.h>
#include <ipc/ipc_voucher.h>
#include <ipc/ipc_eventlink.h>
#include <mach/machine/ndr_def.h> /* NDR_record */
SECURITY_READ_ONLY_LATE(vm_map_t) ipc_kernel_map;
/* values to limit physical copy out-of-line memory descriptors */
SECURITY_READ_ONLY_LATE(vm_map_t) ipc_kernel_copy_map;
#define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
const vm_size_t ipc_kmsg_max_vm_space = ((IPC_KERNEL_COPY_MAP_SIZE * 7) / 8);
#define IPC_KERNEL_MAP_SIZE (CONFIG_IPC_KERNEL_MAP_SIZE << 20)
LCK_GRP_DECLARE(ipc_lck_grp, "ipc");
LCK_ATTR_DECLARE(ipc_lck_attr, 0, 0);
/*
* As an optimization, 'small' out of line data regions using a
* physical copy strategy are copied into kalloc'ed buffers.
* The value of 'small' is determined here. Requests kalloc()
* with sizes greater than msg_ool_size_small may fail.
*/
const vm_size_t msg_ool_size_small = KHEAP_MAX_SIZE;
__startup_data
static struct mach_vm_range ipc_kernel_range;
__startup_data
static struct mach_vm_range ipc_kernel_copy_range;
KMEM_RANGE_REGISTER_STATIC(ipc_kernel_map, &ipc_kernel_range,
IPC_KERNEL_MAP_SIZE);
KMEM_RANGE_REGISTER_STATIC(ipc_kernel_copy_map, &ipc_kernel_copy_range,
IPC_KERNEL_COPY_MAP_SIZE);
/*
* Routine: ipc_init
* Purpose:
* Final initialization
*/
__startup_func
static void
ipc_init(void)
{
/* create special spaces */
ipc_space_kernel = ipc_space_create_special();
ipc_space_reply = ipc_space_create_special();
/* initialize modules with hidden data structures */
#if CONFIG_ARCADE
arcade_init();
#endif
ipc_kernel_map = kmem_suballoc(kernel_map, &ipc_kernel_range.min_address,
IPC_KERNEL_MAP_SIZE, VM_MAP_CREATE_PAGEABLE,
VM_FLAGS_FIXED | VM_FLAGS_OVERWRITE, KMS_PERMANENT | KMS_NOFAIL,
VM_KERN_MEMORY_IPC).kmr_submap;
ipc_kernel_copy_map = kmem_suballoc(kernel_map, &ipc_kernel_copy_range.min_address,
IPC_KERNEL_COPY_MAP_SIZE,
VM_MAP_CREATE_PAGEABLE | VM_MAP_CREATE_DISABLE_HOLELIST,
VM_FLAGS_FIXED | VM_FLAGS_OVERWRITE, KMS_PERMANENT | KMS_NOFAIL,
VM_KERN_MEMORY_IPC).kmr_submap;
ipc_kernel_copy_map->no_zero_fill = TRUE;
ipc_kernel_copy_map->wait_for_space = TRUE;
ipc_host_init();
ux_handler_init();
}
#ifndef __BUILDING_XNU_LIB_UNITTEST__ /* unittests don't support creating submap in kernel_map */
STARTUP(MACH_IPC, STARTUP_RANK_LAST, ipc_init);
#endif /* __BUILDING_XNU_LIB_UNITTEST__ */