/*
* 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
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* Please see the License for the specific language governing rights and
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*
* @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_init.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)
/* Note: Consider Developer Mode when changing the default. */
#if XNU_TARGET_OS_OSX
#define IPC_CONTROL_PORT_OPTIONS_DEFAULT (ICP_OPTIONS_IMMOVABLE_1P_HARD | ICP_OPTIONS_PINNED_1P_HARD)
#else
#define IPC_CONTROL_PORT_OPTIONS_DEFAULT (ICP_OPTIONS_IMMOVABLE_ALL_HARD | \
ICP_OPTIONS_PINNED_1P_HARD | \
ICP_OPTIONS_PINNED_3P_SOFT)
#endif
TUNABLE(ipc_control_port_options_t, ipc_control_port_options,
"ipc_control_port_options", IPC_CONTROL_PORT_OPTIONS_DEFAULT);
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)
{
kern_return_t kr;
/* create special spaces */
kr = ipc_space_create_special(&ipc_space_kernel);
assert(kr == KERN_SUCCESS);
kr = ipc_space_create_special(&ipc_space_reply);
assert(kr == KERN_SUCCESS);
/* initialize modules with hidden data structures */
#if CONFIG_ARCADE
arcade_init();
#endif
bool pinned_control_port_enabled_1p = !!(ipc_control_port_options & ICP_OPTIONS_1P_PINNED);
bool immovable_control_port_enabled_1p = !!(ipc_control_port_options & ICP_OPTIONS_1P_IMMOVABLE);
bool pinned_control_port_enabled_3p = !!(ipc_control_port_options & ICP_OPTIONS_3P_PINNED);
bool immovable_control_port_enabled_3p = !!(ipc_control_port_options & ICP_OPTIONS_3P_IMMOVABLE);
if (pinned_control_port_enabled_1p && !immovable_control_port_enabled_1p) {
kprintf("Invalid ipc_control_port_options boot-arg: pinned control port cannot be enabled without immovability enforcement. Ignoring 1p pinning boot-arg.");
ipc_control_port_options &= ~ICP_OPTIONS_1P_PINNED;
}
if (pinned_control_port_enabled_3p && !immovable_control_port_enabled_3p) {
kprintf("Invalid ipc_control_port_options boot-arg: pinned control port cannot be enabled without immovability enforcement. Ignoring 3p pinning boot-arg.");
ipc_control_port_options &= ~ICP_OPTIONS_3P_PINNED;
}
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();
}
STARTUP(MACH_IPC, STARTUP_RANK_LAST, ipc_init);