syscall_sw.c   [plain text]

/*
 * Copyright (c) 2000-2005, 2020 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,
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 * Please see the License for the specific language governing rights and
 * limitations under the License.
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 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 * 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.
 */
/*
 */

#include <mach/mach_types.h>
#include <mach/mach_traps.h>

#include <kern/syscall_sw.h>
#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
#include <sys/munge.h>
#endif

/* Forwards */


/*
 *	To add a new entry:
 *		Add an "MACH_TRAP(routine, arg_count, num_32_bit_words, munge_routine)" to the table below.
 *		where,
 *		- routine:		The trap handling routine in the kernel
 *		- arg_count:		The number of arguments for the mach trap (independant of arch/arg size).
 *					This value also defines the number of 64-bit words copied in for a U64 process.
 *		- num_32_bit_words:	The number of 32-bit words to be copied in for a U32 process.
 *		- munge_routine:	The argument munging routine to align input args correctly.
 *
 *		Also, add trap definition to mach/syscall_sw.h and
 *		recompile user library.
 *
 *
 * WARNING:	If you add a trap which requires more than 7
 *		parameters, mach/{machine}/syscall_sw.h and {machine}/trap.c
 *		and/or {machine}/locore.s may need to be modified for it
 *		to work successfully.
 *
 * WARNING:	Don't use numbers 0 through -9.  They (along with
 *		the positive numbers) are reserved for Unix.
 */

int kern_invalid_debug = 0;

/* Include declarations of the trap functions. */

#include <mach/mach_traps.h>
#include <mach/mach_syscalls.h>
#include <kern/syscall_subr.h>

#include <kern/clock.h>
#include <mach/mk_timer.h>

const mach_trap_t       mach_trap_table[MACH_TRAP_TABLE_COUNT] = {
/* 0 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 1 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 2 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 3 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 4 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 5 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 6 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 7 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 8 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 9 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 10 */ MACH_TRAP(_kernelrpc_mach_vm_allocate_trap, 4, 5, munge_wwlw),
/* 11 */ MACH_TRAP(_kernelrpc_mach_vm_purgable_control_trap, 4, 5, munge_wlww),
/* 12 */ MACH_TRAP(_kernelrpc_mach_vm_deallocate_trap, 3, 5, munge_wll),
/* 13 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 14 */ MACH_TRAP(_kernelrpc_mach_vm_protect_trap, 5, 7, munge_wllww),
/* 15 */ MACH_TRAP(_kernelrpc_mach_vm_map_trap, 6, 8, munge_wwllww),
/* 16 */ MACH_TRAP(_kernelrpc_mach_port_allocate_trap, 3, 3, munge_www),
/* 17 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 18 */ MACH_TRAP(_kernelrpc_mach_port_deallocate_trap, 2, 2, munge_ww),
/* 19 */ MACH_TRAP(_kernelrpc_mach_port_mod_refs_trap, 4, 4, munge_wwww),
/* 20 */ MACH_TRAP(_kernelrpc_mach_port_move_member_trap, 3, 3, munge_www),
/* 21 */ MACH_TRAP(_kernelrpc_mach_port_insert_right_trap, 4, 4, munge_wwww),
/* 22 */ MACH_TRAP(_kernelrpc_mach_port_insert_member_trap, 3, 3, munge_www),
/* 23 */ MACH_TRAP(_kernelrpc_mach_port_extract_member_trap, 3, 3, munge_www),
/* 24 */ MACH_TRAP(_kernelrpc_mach_port_construct_trap, 4, 5, munge_wwlw),
/* 25 */ MACH_TRAP(_kernelrpc_mach_port_destruct_trap, 4, 5, munge_wwwl),
/* 26 */ MACH_TRAP(mach_reply_port, 0, 0, NULL),
/* 27 */ MACH_TRAP(thread_self_trap, 0, 0, NULL),
/* 28 */ MACH_TRAP(task_self_trap, 0, 0, NULL),
/* 29 */ MACH_TRAP(host_self_trap, 0, 0, NULL),
/* 30 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 31 */ MACH_TRAP(mach_msg_trap, 7, 7, munge_wwwwwww),
/* 32 */ MACH_TRAP(mach_msg_overwrite_trap, 8, 8, munge_wwwwwwww),
/* 33 */ MACH_TRAP(semaphore_signal_trap, 1, 1, munge_w),
/* 34 */ MACH_TRAP(semaphore_signal_all_trap, 1, 1, munge_w),
/* 35 */ MACH_TRAP(semaphore_signal_thread_trap, 2, 2, munge_ww),
/* 36 */ MACH_TRAP(semaphore_wait_trap, 1, 1, munge_w),
/* 37 */ MACH_TRAP(semaphore_wait_signal_trap, 2, 2, munge_ww),
/* 38 */ MACH_TRAP(semaphore_timedwait_trap, 3, 3, munge_www),
/* 39 */ MACH_TRAP(semaphore_timedwait_signal_trap, 4, 4, munge_wwww),
/* 40 */ MACH_TRAP(_kernelrpc_mach_port_get_attributes_trap, 5, 5, munge_wwwww),
/* 41 */ MACH_TRAP(_kernelrpc_mach_port_guard_trap, 4, 5, munge_wwlw),
/* 42 */ MACH_TRAP(_kernelrpc_mach_port_unguard_trap, 3, 4, munge_wwl),
/* 43 */ MACH_TRAP(mach_generate_activity_id, 3, 3, munge_www),
/* 44 */ MACH_TRAP(task_name_for_pid, 3, 3, munge_www),
/* 45 */ MACH_TRAP(task_for_pid, 3, 3, munge_www),
/* 46 */ MACH_TRAP(pid_for_task, 2, 2, munge_ww),
/* 47 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 48 */ MACH_TRAP(macx_swapon, 4, 5, munge_lwww),
/* 49 */ MACH_TRAP(macx_swapoff, 2, 3, munge_lw),
/* 50 */ MACH_TRAP(thread_get_special_reply_port, 0, 0, NULL),
/* 51 */ MACH_TRAP(macx_triggers, 4, 4, munge_wwww),
/* 52 */ MACH_TRAP(macx_backing_store_suspend, 1, 1, munge_w),
/* 53 */ MACH_TRAP(macx_backing_store_recovery, 1, 1, munge_w),
/* 54 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 55 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 56 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 57 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 58 */ MACH_TRAP(pfz_exit, 0, 0, NULL),
/* 59 */ MACH_TRAP(swtch_pri, 0, 0, NULL),
/* 60 */ MACH_TRAP(swtch, 0, 0, NULL),
/* 61 */ MACH_TRAP(thread_switch, 3, 3, munge_www),
/* 62 */ MACH_TRAP(clock_sleep_trap, 5, 5, munge_wwwww),
/* 63 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 64 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 65 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 66 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 67 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 68 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 69 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 70 */ MACH_TRAP(host_create_mach_voucher_trap, 4, 4, munge_wwww),
/* 71 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 72 */ MACH_TRAP(mach_voucher_extract_attr_recipe_trap, 4, 4, munge_wwww),
/* 73 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 74 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 75 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 76 */ MACH_TRAP(_kernelrpc_mach_port_type_trap, 3, 3, munge_wwww),
/* 77 */ MACH_TRAP(_kernelrpc_mach_port_request_notification_trap, 7, 7, munge_wwwwwww),
/* 78 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 79 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 80 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 81 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 82 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 83 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 84 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 85 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 86 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 87 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 88 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 89 */ MACH_TRAP(mach_timebase_info_trap, 1, 1, munge_w),
/* 90 */ MACH_TRAP(mach_wait_until_trap, 1, 2, munge_l),
/* 91 */ MACH_TRAP(mk_timer_create_trap, 0, 0, NULL),
/* 92 */ MACH_TRAP(mk_timer_destroy_trap, 1, 1, munge_w),
/* 93 */ MACH_TRAP(mk_timer_arm_trap, 2, 3, munge_wl),
/* 94 */ MACH_TRAP(mk_timer_cancel_trap, 2, 2, munge_ww),
/* 95 */ MACH_TRAP(mk_timer_arm_leeway_trap, 4, 6, munge_wlll),
/* 96 */ MACH_TRAP(debug_control_port_for_pid, 3, 3, munge_www),
/* 97 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 98 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 99 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* traps 100-107 reserved for IOKit */
/* 100 */ MACH_TRAP(iokit_user_client_trap, 8, 8, munge_wwwwwwww),
/* 101 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 102 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 103 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 104 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 105 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 106 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 107 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 108 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 109 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 110 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 111 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 112 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 113 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 114 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 115 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 116 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 117 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 118 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 119 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 120 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 121 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 122 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 123 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 124 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 125 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 126 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
/* 127 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
};

const char * mach_syscall_name_table[MACH_TRAP_TABLE_COUNT] = {
/* 0 */ "kern_invalid",
/* 1 */ "kern_invalid",
/* 2 */ "kern_invalid",
/* 3 */ "kern_invalid",
/* 4 */ "kern_invalid",
/* 5 */ "kern_invalid",
/* 6 */ "kern_invalid",
/* 7 */ "kern_invalid",
/* 8 */ "kern_invalid",
/* 9 */ "kern_invalid",
/* 10 */ "_kernelrpc_mach_vm_allocate_trap",
/* 11 */ "kern_invalid",
/* 12 */ "_kernelrpc_mach_vm_deallocate_trap",
/* 13 */ "kern_invalid",
/* 14 */ "_kernelrpc_mach_vm_protect_trap",
/* 15 */ "_kernelrpc_mach_vm_map_trap",
/* 16 */ "_kernelrpc_mach_port_allocate_trap",
/* 17 */ "kern_invalid",
/* 18 */ "_kernelrpc_mach_port_deallocate_trap",
/* 19 */ "_kernelrpc_mach_port_mod_refs_trap",
/* 20 */ "_kernelrpc_mach_port_move_member_trap",
/* 21 */ "_kernelrpc_mach_port_insert_right_trap",
/* 22 */ "_kernelrpc_mach_port_insert_member_trap",
/* 23 */ "_kernelrpc_mach_port_extract_member_trap",
/* 24 */ "_kernelrpc_mach_port_construct_trap",
/* 25 */ "_kernelrpc_mach_port_destruct_trap",
/* 26 */ "mach_reply_port",
/* 27 */ "thread_self_trap",
/* 28 */ "task_self_trap",
/* 29 */ "host_self_trap",
/* 30 */ "kern_invalid",
/* 31 */ "mach_msg_trap",
/* 32 */ "mach_msg_overwrite_trap",
/* 33 */ "semaphore_signal_trap",
/* 34 */ "semaphore_signal_all_trap",
/* 35 */ "semaphore_signal_thread_trap",
/* 36 */ "semaphore_wait_trap",
/* 37 */ "semaphore_wait_signal_trap",
/* 38 */ "semaphore_timedwait_trap",
/* 39 */ "semaphore_timedwait_signal_trap",
/* 40 */ "kern_invalid",
/* 41 */ "_kernelrpc_mach_port_guard_trap",
/* 42 */ "_kernelrpc_mach_port_unguard_trap",
/* 43 */ "mach_generate_activity_id",
/* 44 */ "task_name_for_pid",
/* 45 */ "task_for_pid",
/* 46 */ "pid_for_task",
/* 47 */ "kern_invalid",
/* 48 */ "macx_swapon",
/* 49 */ "macx_swapoff",
/* 50 */ "thread_get_special_reply_port",
/* 51 */ "macx_triggers",
/* 52 */ "macx_backing_store_suspend",
/* 53 */ "macx_backing_store_recovery",
/* 54 */ "kern_invalid",
/* 55 */ "kern_invalid",
/* 56 */ "kern_invalid",
/* 57 */ "kern_invalid",
/* 58 */ "pfz_exit",
/* 59 */ "swtch_pri",
/* 60 */ "swtch",
/* 61 */ "thread_switch",
/* 62 */ "clock_sleep_trap",
/* 63 */ "kern_invalid",
/* traps 64 - 95 reserved (debo) */
/* 64 */ "kern_invalid",
/* 65 */ "kern_invalid",
/* 66 */ "kern_invalid",
/* 67 */ "kern_invalid",
/* 68 */ "kern_invalid",
/* 69 */ "kern_invalid",
/* 70 */ "host_create_mach_voucher_trap",
/* 71 */ "kern_invalid",
/* 72 */ "mach_voucher_extract_attr_recipe_trap",
/* 73 */ "kern_invalid",
/* 74 */ "kern_invalid",
/* 75 */ "kern_invalid",
/* 76 */ "_kernelrpc_mach_port_type_trap",
/* 77 */ "_kernelrpc_mach_port_request_notification_trap",
/* 78 */ "kern_invalid",
/* 79 */ "kern_invalid",
/* 80 */ "kern_invalid",
/* 81 */ "kern_invalid",
/* 82 */ "kern_invalid",
/* 83 */ "kern_invalid",
/* 84 */ "kern_invalid",
/* 85 */ "kern_invalid",
/* 86 */ "kern_invalid",
/* 87 */ "kern_invalid",
/* 88 */ "kern_invalid",
/* 89 */ "mach_timebase_info_trap",
/* 90 */ "mach_wait_until_trap",
/* 91 */ "mk_timer_create_trap",
/* 92 */ "mk_timer_destroy_trap",
/* 93 */ "mk_timer_arm_trap",
/* 94 */ "mk_timer_cancel_trap",
/* 95 */ "kern_invalid",
/* traps 64 - 95 reserved (debo) */
/* 96 */ "debug_control_port_for_pid",
/* 97 */ "kern_invalid",
/* 98 */ "kern_invalid",
/* 99 */ "kern_invalid",
/* traps 100-107 reserved for iokit (esb) */
/* 100 */ "iokit_user_client_trap",
/* 101 */ "kern_invalid",
/* 102 */ "kern_invalid",
/* 103 */ "kern_invalid",
/* 104 */ "kern_invalid",
/* 105 */ "kern_invalid",
/* 106 */ "kern_invalid",
/* 107 */ "kern_invalid",
/* traps 108-127 unused */
/* 108 */ "kern_invalid",
/* 109 */ "kern_invalid",
/* 110 */ "kern_invalid",
/* 111 */ "kern_invalid",
/* 112 */ "kern_invalid",
/* 113 */ "kern_invalid",
/* 114 */ "kern_invalid",
/* 115 */ "kern_invalid",
/* 116 */ "kern_invalid",
/* 117 */ "kern_invalid",
/* 118 */ "kern_invalid",
/* 119 */ "kern_invalid",
/* 120 */ "kern_invalid",
/* 121 */ "kern_invalid",
/* 122 */ "kern_invalid",
/* 123 */ "kern_invalid",
/* 124 */ "kern_invalid",
/* 125 */ "kern_invalid",
/* 126 */ "kern_invalid",
/* 127 */ "kern_invalid",
};

int     mach_trap_count = (sizeof(mach_trap_table) / sizeof(mach_trap_table[0]));

kern_return_t
kern_invalid(
	__unused struct kern_invalid_args *args)
{
	if (kern_invalid_debug) {
		Debugger("kern_invalid mach trap");
	}
	return KERN_INVALID_ARGUMENT;
}