osfmk/kern/syscall_sw.c

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58
  59 #include <mach/mach_types.h>
  60 #include <mach/mach_traps.h>
  61
  62 #include <kern/syscall_sw.h>
  63 #if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
  64 #include <sys/munge.h>
  65 #endif
  66
  67 /* Forwards */
  68
  69
  70 /*
  71  *      To add a new entry:
  72  *              Add an "MACH_TRAP(routine, arg_count, num_32_bit_words, munge_routine)" to the table below.
  73  *              where,
  74  *              - routine:              The trap handling routine in the kernel
  75  *              - arg_count:            The number of arguments for the mach trap (independant of arch/arg size).
  76  *                                      This value also defines the number of 64-bit words copied in for a U64 process.
  77  *              - num_32_bit_words:     The number of 32-bit words to be copied in for a U32 process.
  78  *              - munge_routine:        The argument munging routine to align input args correctly.
  79  *
  80  *              Also, add trap definition to mach/syscall_sw.h and
  81  *              recompile user library.
  82  *
  83  *
  84  * WARNING:     If you add a trap which requires more than 7
  85  *              parameters, mach/{machine}/syscall_sw.h and {machine}/trap.c
  86  *              and/or {machine}/locore.s may need to be modified for it
  87  *              to work successfully.
  88  *
  89  * WARNING:     Don't use numbers 0 through -9.  They (along with
  90  *              the positive numbers) are reserved for Unix.
  91  */
  92
  93 int kern_invalid_debug = 0;
  94
  95 /* Include declarations of the trap functions. */
  96
  97 #include <mach/mach_traps.h>
  98 #include <mach/mach_syscalls.h>
  99 #include <kern/syscall_subr.h>
 100
 101 #include <kern/clock.h>
 102 #include <mach/mk_timer.h>
 103
 104 const mach_trap_t       mach_trap_table[MACH_TRAP_TABLE_COUNT] = {
 105 /* 0 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 106 /* 1 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 107 /* 2 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 108 /* 3 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 109 /* 4 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 110 /* 5 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 111 /* 6 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 112 /* 7 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 113 /* 8 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 114 /* 9 */         MACH_TRAP(kern_invalid, 0, 0, NULL),
 115 /* 10 */        MACH_TRAP(_kernelrpc_mach_vm_allocate_trap, 4, 5, munge_wwlw),
 116 /* 11 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 117 /* 12 */        MACH_TRAP(_kernelrpc_mach_vm_deallocate_trap, 3, 5, munge_wll),
 118 /* 13 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 119 /* 14 */        MACH_TRAP(_kernelrpc_mach_vm_protect_trap, 5, 7, munge_wllww),
 120 /* 15 */        MACH_TRAP(_kernelrpc_mach_vm_map_trap, 6, 8, munge_wwllww),
 121 /* 16 */        MACH_TRAP(_kernelrpc_mach_port_allocate_trap, 3, 3, munge_www),
 122 /* 17 */        MACH_TRAP(_kernelrpc_mach_port_destroy_trap, 2, 2, munge_ww),
 123 /* 18 */        MACH_TRAP(_kernelrpc_mach_port_deallocate_trap, 2, 2, munge_ww),
 124 /* 19 */        MACH_TRAP(_kernelrpc_mach_port_mod_refs_trap, 4, 4, munge_wwww),
 125 /* 20 */        MACH_TRAP(_kernelrpc_mach_port_move_member_trap, 3, 3, munge_www),
 126 /* 21 */        MACH_TRAP(_kernelrpc_mach_port_insert_right_trap, 4, 4, munge_wwww),
 127 /* 22 */        MACH_TRAP(_kernelrpc_mach_port_insert_member_trap, 3, 3, munge_www),
 128 /* 23 */        MACH_TRAP(_kernelrpc_mach_port_extract_member_trap, 3, 3, munge_www),
 129 /* 24 */        MACH_TRAP(_kernelrpc_mach_port_construct_trap, 4, 5, munge_wwlw),
 130 /* 25 */        MACH_TRAP(_kernelrpc_mach_port_destruct_trap, 4, 5, munge_wwwl),
 131 /* 26 */        MACH_TRAP(mach_reply_port, 0, 0, NULL),
 132 /* 27 */        MACH_TRAP(thread_self_trap, 0, 0, NULL),
 133 /* 28 */        MACH_TRAP(task_self_trap, 0, 0, NULL),
 134 /* 29 */        MACH_TRAP(host_self_trap, 0, 0, NULL),
 135 /* 30 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 136 /* 31 */        MACH_TRAP(mach_msg_trap, 7, 7, munge_wwwwwww),
 137 /* 32 */        MACH_TRAP(mach_msg_overwrite_trap, 8, 8, munge_wwwwwwww),
 138 /* 33 */        MACH_TRAP(semaphore_signal_trap, 1, 1, munge_w),
 139 /* 34 */        MACH_TRAP(semaphore_signal_all_trap, 1, 1, munge_w),
 140 /* 35 */        MACH_TRAP(semaphore_signal_thread_trap, 2, 2, munge_ww),
 141 /* 36 */        MACH_TRAP(semaphore_wait_trap, 1, 1, munge_w),
 142 /* 37 */        MACH_TRAP(semaphore_wait_signal_trap, 2, 2, munge_ww),
 143 /* 38 */        MACH_TRAP(semaphore_timedwait_trap, 3, 3, munge_www),
 144 /* 39 */        MACH_TRAP(semaphore_timedwait_signal_trap, 4, 4, munge_wwww),
 145 /* 40 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 146 /* 41 */        MACH_TRAP(_kernelrpc_mach_port_guard_trap, 4, 5, munge_wwlw),
 147 /* 42 */        MACH_TRAP(_kernelrpc_mach_port_unguard_trap, 3, 4, munge_wwl),
 148 /* 43 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 149 /* 44 */        MACH_TRAP(task_name_for_pid, 3, 3, munge_www),
 150 /* 45 */        MACH_TRAP(task_for_pid, 3, 3, munge_www),
 151 /* 46 */        MACH_TRAP(pid_for_task, 2, 2, munge_ww),
 152 /* 47 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 153 /* 48 */        MACH_TRAP(macx_swapon, 4, 5, munge_lwww),
 154 /* 49 */        MACH_TRAP(macx_swapoff, 2, 3, munge_lw),
 155 /* 50 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 156 /* 51 */        MACH_TRAP(macx_triggers, 4, 4, munge_wwww),
 157 /* 52 */        MACH_TRAP(macx_backing_store_suspend, 1, 1, munge_w),
 158 /* 53 */        MACH_TRAP(macx_backing_store_recovery, 1, 1, munge_w),
 159 /* 54 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 160 /* 55 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 161 /* 56 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 162 /* 57 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 163 /* 58 */        MACH_TRAP(pfz_exit, 0, 0, NULL),
 164 /* 59 */        MACH_TRAP(swtch_pri, 0, 0, NULL),
 165 /* 60 */        MACH_TRAP(swtch, 0, 0, NULL),
 166 /* 61 */        MACH_TRAP(thread_switch, 3, 3, munge_www),
 167 /* 62 */        MACH_TRAP(clock_sleep_trap, 5, 5, munge_wwwww),
 168 /* 63 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 169 /* traps 64 - 95 reserved (debo) */
 170 /* 64 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 171 /* 65 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 172 /* 66 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 173 /* 67 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 174 /* 68 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 175 /* 69 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 176 /* 70 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 177 /* 71 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 178 /* 72 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 179 /* 73 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 180 /* 74 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 181 /* 75 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 182 /* 76 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 183 /* 77 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 184 /* 78 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 185 /* 79 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 186 /* 80 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 187 /* 81 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 188 /* 82 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 189 /* 83 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 190 /* 84 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 191 /* 85 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 192 /* 86 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 193 /* 87 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 194 /* 88 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 195 /* 89 */        MACH_TRAP(mach_timebase_info_trap, 1, 1, munge_w),
 196 /* 90 */        MACH_TRAP(mach_wait_until_trap, 1, 2, munge_l),
 197 /* 91 */        MACH_TRAP(mk_timer_create_trap, 0, 0, NULL),
 198 /* 92 */        MACH_TRAP(mk_timer_destroy_trap, 1, 1, munge_w),
 199 /* 93 */        MACH_TRAP(mk_timer_arm_trap, 2, 3, munge_wl),
 200 /* 94 */        MACH_TRAP(mk_timer_cancel_trap, 2, 2, munge_ww),
 201 /* 95 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 202 /* traps 64 - 95 reserved (debo) */
 203 /* 96 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 204 /* 97 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 205 /* 98 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 206 /* 99 */        MACH_TRAP(kern_invalid, 0, 0, NULL),
 207 /* traps 100-107 reserved for iokit (esb) */
 208 /* 100 */       MACH_TRAP(iokit_user_client_trap, 8, 8, munge_wwwwwwww),
 209 /* 101 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 210 /* 102 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 211 /* 103 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 212 /* 104 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 213 /* 105 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 214 /* 106 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 215 /* 107 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 216 /* traps 108-127 unused */
 217 /* 108 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 218 /* 109 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 219 /* 110 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 220 /* 111 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 221 /* 112 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 222 /* 113 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 223 /* 114 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 224 /* 115 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 225 /* 116 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 226 /* 117 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 227 /* 118 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 228 /* 119 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 229 /* 120 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 230 /* 121 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 231 /* 122 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 232 /* 123 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 233 /* 124 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 234 /* 125 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 235 /* 126 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 236 /* 127 */       MACH_TRAP(kern_invalid, 0, 0, NULL),
 237 };
 238
 239 const char * mach_syscall_name_table[MACH_TRAP_TABLE_COUNT] = {
 240 /* 0 */         "kern_invalid",
 241 /* 1 */         "kern_invalid",
 242 /* 2 */         "kern_invalid",
 243 /* 3 */         "kern_invalid",
 244 /* 4 */         "kern_invalid",
 245 /* 5 */         "kern_invalid",
 246 /* 6 */         "kern_invalid",
 247 /* 7 */         "kern_invalid",
 248 /* 8 */         "kern_invalid",
 249 /* 9 */         "kern_invalid",
 250 /* 10 */        "_kernelrpc_mach_vm_allocate_trap",
 251 /* 11 */        "kern_invalid",
 252 /* 12 */        "_kernelrpc_mach_vm_deallocate_trap",
 253 /* 13 */        "kern_invalid",
 254 /* 14 */        "_kernelrpc_mach_vm_protect_trap",
 255 /* 15 */        "_kernelrpc_mach_vm_map_trap",
 256 /* 16 */        "_kernelrpc_mach_port_allocate_trap",
 257 /* 17 */        "_kernelrpc_mach_port_destroy_trap",
 258 /* 18 */        "_kernelrpc_mach_port_deallocate_trap",
 259 /* 19 */        "_kernelrpc_mach_port_mod_refs_trap",
 260 /* 20 */        "_kernelrpc_mach_port_move_member_trap",
 261 /* 21 */        "_kernelrpc_mach_port_insert_right_trap",
 262 /* 22 */        "_kernelrpc_mach_port_insert_member_trap",
 263 /* 23 */        "_kernelrpc_mach_port_extract_member_trap",
 264 /* 24 */        "_kernelrpc_mach_port_construct_trap",
 265 /* 25 */        "_kernelrpc_mach_port_destruct_trap",
 266 /* 26 */        "mach_reply_port",
 267 /* 27 */        "thread_self_trap",
 268 /* 28 */        "task_self_trap",
 269 /* 29 */        "host_self_trap",
 270 /* 30 */        "kern_invalid",
 271 /* 31 */        "mach_msg_trap",
 272 /* 32 */        "mach_msg_overwrite_trap",
 273 /* 33 */        "semaphore_signal_trap",
 274 /* 34 */        "semaphore_signal_all_trap",
 275 /* 35 */        "semaphore_signal_thread_trap",
 276 /* 36 */        "semaphore_wait_trap",
 277 /* 37 */        "semaphore_wait_signal_trap",
 278 /* 38 */        "semaphore_timedwait_trap",
 279 /* 39 */        "semaphore_timedwait_signal_trap",
 280 /* 40 */        "kern_invalid",
 281 /* 41 */        "_kernelrpc_mach_port_guard_trap",
 282 /* 42 */        "_kernelrpc_mach_port_unguard_trap",
 283 /* 43 */        "kern_invalid",
 284 /* 44 */        "task_name_for_pid",
 285 /* 45 */        "task_for_pid",
 286 /* 46 */        "pid_for_task",
 287 /* 47 */        "kern_invalid",
 288 /* 48 */        "macx_swapon",
 289 /* 49 */        "macx_swapoff",
 290 /* 50 */        "kern_invalid",
 291 /* 51 */        "macx_triggers",
 292 /* 52 */        "macx_backing_store_suspend",
 293 /* 53 */        "macx_backing_store_recovery",
 294 /* 54 */        "kern_invalid",
 295 /* 55 */        "kern_invalid",
 296 /* 56 */        "kern_invalid",
 297 /* 57 */        "kern_invalid",
 298 /* 58 */        "pfz_exit",
 299 /* 59 */        "swtch_pri",
 300 /* 60 */        "swtch",
 301 /* 61 */        "thread_switch",
 302 /* 62 */        "clock_sleep_trap",
 303 /* 63 */        "kern_invalid",
 304 /* traps 64 - 95 reserved (debo) */
 305 /* 64 */        "kern_invalid",
 306 /* 65 */        "kern_invalid",
 307 /* 66 */        "kern_invalid",
 308 /* 67 */        "kern_invalid",
 309 /* 68 */        "kern_invalid",
 310 /* 69 */        "kern_invalid",
 311 /* 70 */        "kern_invalid",
 312 /* 71 */        "kern_invalid",
 313 /* 72 */        "kern_invalid",
 314 /* 73 */        "kern_invalid",
 315 /* 74 */        "kern_invalid",
 316 /* 75 */        "kern_invalid",
 317 /* 76 */        "kern_invalid",
 318 /* 77 */        "kern_invalid",
 319 /* 78 */        "kern_invalid",
 320 /* 79 */        "kern_invalid",
 321 /* 80 */        "kern_invalid",
 322 /* 81 */        "kern_invalid",
 323 /* 82 */        "kern_invalid",
 324 /* 83 */        "kern_invalid",
 325 /* 84 */        "kern_invalid",
 326 /* 85 */        "kern_invalid",
 327 /* 86 */        "kern_invalid",
 328 /* 87 */        "kern_invalid",
 329 /* 88 */        "kern_invalid",
 330 /* 89 */        "mach_timebase_info_trap",
 331 /* 90 */        "mach_wait_until_trap",
 332 /* 91 */        "mk_timer_create_trap",
 333 /* 92 */        "mk_timer_destroy_trap",
 334 /* 93 */        "mk_timer_arm_trap",
 335 /* 94 */        "mk_timer_cancel_trap",
 336 /* 95 */        "kern_invalid",
 337 /* traps 64 - 95 reserved (debo) */
 338 /* 96 */        "kern_invalid",
 339 /* 97 */        "kern_invalid",
 340 /* 98 */        "kern_invalid",
 341 /* 99 */        "kern_invalid",
 342 /* traps 100-107 reserved for iokit (esb) */
 343 /* 100 */       "iokit_user_client_trap",
 344 /* 101 */       "kern_invalid",
 345 /* 102 */       "kern_invalid",
 346 /* 103 */       "kern_invalid",
 347 /* 104 */       "kern_invalid",
 348 /* 105 */       "kern_invalid",
 349 /* 106 */       "kern_invalid",
 350 /* 107 */       "kern_invalid",
 351 /* traps 108-127 unused */
 352 /* 108 */       "kern_invalid",
 353 /* 109 */       "kern_invalid",
 354 /* 110 */       "kern_invalid",
 355 /* 111 */       "kern_invalid",
 356 /* 112 */       "kern_invalid",
 357 /* 113 */       "kern_invalid",
 358 /* 114 */       "kern_invalid",
 359 /* 115 */       "kern_invalid",
 360 /* 116 */       "kern_invalid",
 361 /* 117 */       "kern_invalid",
 362 /* 118 */       "kern_invalid",
 363 /* 119 */       "kern_invalid",
 364 /* 120 */       "kern_invalid",
 365 /* 121 */       "kern_invalid",
 366 /* 122 */       "kern_invalid",
 367 /* 123 */       "kern_invalid",
 368 /* 124 */       "kern_invalid",
 369 /* 125 */       "kern_invalid",
 370 /* 126 */       "kern_invalid",
 371 /* 127 */       "kern_invalid",
 372 };
 373
 374 int     mach_trap_count = (sizeof(mach_trap_table) / sizeof(mach_trap_table[0]));
 375
 376 kern_return_t
 377 kern_invalid(
 378         __unused struct kern_invalid_args *args)
 379 {
 380         if (kern_invalid_debug) Debugger("kern_invalid mach trap");
 381         return(KERN_INVALID_ARGUMENT);
 382 }
 383