1 /*
2 * Copyright (c) 2000-2019 Apple 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_FREE_COPYRIGHT@
30 */
31 /*
32 * Mach Operating System
33 * Copyright (c) 1991,1990,1989,1988 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 [email protected]
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 * File: task.h
60 * Author: Avadis Tevanian, Jr.
61 *
62 * This file contains the structure definitions for tasks.
63 *
64 */
65 /*
66 * Copyright (c) 1993 The University of Utah and
67 * the Computer Systems Laboratory (CSL). All rights reserved.
68 *
69 * Permission to use, copy, modify and distribute this software and its
70 * documentation is hereby granted, provided that both the copyright
71 * notice and this permission notice appear in all copies of the
72 * software, derivative works or modified versions, and any portions
73 * thereof, and that both notices appear in supporting documentation.
74 *
75 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
76 * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
77 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
78 *
79 * CSL requests users of this software to return to [email protected] any
80 * improvements that they make and grant CSL redistribution rights.
81 *
82 */
83 /*
84 * NOTICE: This file was modified by McAfee Research in 2004 to introduce
85 * support for mandatory and extensible security protections. This notice
86 * is included in support of clause 2.2 (b) of the Apple Public License,
87 * Version 2.0.
88 * Copyright (c) 2005 SPARTA, Inc.
89 */
90
91 #ifndef _KERN_TASK_H_
92 #define _KERN_TASK_H_
93
94 #include <kern/kern_types.h>
95 #include <kern/task_ref.h>
96 #include <mach/mach_types.h>
97 #include <sys/cdefs.h>
98
99 #ifdef XNU_KERNEL_PRIVATE
100 #include <kern/btlog.h>
101 #include <kern/kern_cdata.h>
102 #include <mach/sfi_class.h>
103 #include <kern/counter.h>
104 #include <kern/cs_blobs.h>
105 #include <kern/queue.h>
106 #include <kern/recount.h>
107 #include <sys/kern_sysctl.h>
108 #if CONFIG_EXCLAVES
109 #include <mach/exclaves.h>
110 #endif /* CONFIG_EXCLAVES */
111 #endif /* XNU_KERNEL_PRIVATE */
112
113 #ifdef MACH_KERNEL_PRIVATE
114 #include <mach/boolean.h>
115 #include <mach/port.h>
116 #include <mach/time_value.h>
117 #include <mach/message.h>
118 #include <mach/mach_param.h>
119 #include <mach/task_info.h>
120 #include <mach/exception_types.h>
121 #include <mach/vm_statistics.h>
122 #include <machine/task.h>
123
124 #include <kern/cpu_data.h>
125 #include <kern/queue.h>
126 #include <kern/exception.h>
127 #include <kern/locks.h>
128 #include <security/_label.h>
129 #include <ipc/ipc_port.h>
130
131 #include <kern/thread.h>
132 #include <mach/coalition.h>
133 #include <stdatomic.h>
134 #include <os/refcnt.h>
135
136 #if CONFIG_DEFERRED_RECLAIM
137 typedef struct vm_deferred_reclamation_metadata_s *vm_deferred_reclamation_metadata_t;
138 #endif /* CONFIG_DEFFERED_RECLAIM */
139
140 struct _cpu_time_qos_stats {
141 uint64_t cpu_time_qos_default;
142 uint64_t cpu_time_qos_maintenance;
143 uint64_t cpu_time_qos_background;
144 uint64_t cpu_time_qos_utility;
145 uint64_t cpu_time_qos_legacy;
146 uint64_t cpu_time_qos_user_initiated;
147 uint64_t cpu_time_qos_user_interactive;
148 };
149
150 struct task_writes_counters {
151 uint64_t task_immediate_writes;
152 uint64_t task_deferred_writes;
153 uint64_t task_invalidated_writes;
154 uint64_t task_metadata_writes;
155 };
156
157 struct task_watchports;
158 #include <bank/bank_internal.h>
159
160 #ifdef MACH_BSD
161 struct proc;
162 struct proc_ro;
163 #endif
164
165 struct task {
166 /* Synchronization/destruction information */
167 decl_lck_mtx_data(, lock); /* Task's lock */
168 os_refcnt_t ref_count; /* Number of references to me */
169
170 #if DEVELOPMENT || DEBUG
171 struct os_refgrp *ref_group;
172 lck_spin_t ref_group_lock;
173 #endif /* DEVELOPMENT || DEBUG */
174
175 bool active; /* Task has not been terminated */
176 bool ipc_active; /* IPC with the task ports is allowed */
177 bool halting; /* Task is being halted */
178 bool message_app_suspended; /* Let iokit know when pidsuspended */
179
180 /* Virtual timers */
181 uint32_t vtimers;
182 uint32_t loadTag; /* dext ID used for logging identity */
183
184 /* Globally uniqueid to identify tasks and corpses */
185 uint64_t task_uniqueid;
186
187 /* Miscellaneous */
188 vm_map_t XNU_PTRAUTH_SIGNED_PTR("task.map") map; /* Address space description */
189 queue_chain_t tasks; /* global list of tasks */
190 struct task_watchports *watchports; /* watchports passed in spawn */
191 turnstile_inheritor_t returnwait_inheritor; /* inheritor for task_wait */
192
193 #if defined(CONFIG_SCHED_MULTIQ)
194 sched_group_t sched_group;
195 #endif /* defined(CONFIG_SCHED_MULTIQ) */
196
197 /* Threads in this task */
198 queue_head_t threads;
199 struct restartable_ranges *t_rr_ranges;
200
201 processor_set_t pset_hint;
202 struct affinity_space *affinity_space;
203
204 int thread_count;
205 uint32_t active_thread_count;
206 int suspend_count; /* Internal scheduling only */
207 #ifdef CONFIG_TASK_SUSPEND_STATS
208 struct task_suspend_stats_s t_suspend_stats; /* suspension statistics for this task */
209 task_suspend_source_array_t t_suspend_sources; /* array of suspender debug info for this task */
210 #endif /* CONFIG_TASK_SUSPEND_STATS */
211
212 /* User-visible scheduling information */
213 integer_t user_stop_count; /* outstanding stops */
214 integer_t legacy_stop_count; /* outstanding legacy stops */
215
216 int16_t priority; /* base priority for threads */
217 int16_t max_priority; /* maximum priority for threads */
218
219 integer_t importance; /* priority offset (BSD 'nice' value) */
220
221 #define task_is_immovable(task) \
222 !!(task_get_control_port_options(task) & TASK_CONTROL_PORT_IMMOVABLE)
223 #define task_is_pinned(task) \
224 !!(task_get_control_port_options(task) & TASK_CONTROL_PORT_PINNED)
225
226 /* Statistics */
227 uint64_t total_runnable_time;
228
229 struct recount_task tk_recount;
230
231 /* IPC structures */
232 decl_lck_mtx_data(, itk_lock_data);
233 /*
234 * Different flavors of task port.
235 * These flavors TASK_FLAVOR_* are defined in mach_types.h
236 */
237 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_task_ports") itk_task_ports[TASK_SELF_PORT_COUNT];
238 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_settable_self") itk_settable_self; /* a send right */
239 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_self") itk_self; /* immovable/pinned task port, does not hold right */
240 struct exception_action exc_actions[EXC_TYPES_COUNT];
241 /* a send right each valid element */
242 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_host") itk_host; /* a send right */
243 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_bootstrap") itk_bootstrap; /* a send right */
244 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_debug_control") itk_debug_control; /* send right for debugmode communications */
245 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_task_access") itk_task_access; /* and another send right */
246 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_resume") itk_resume; /* a receive right to resume this task */
247 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_registered") itk_registered[TASK_PORT_REGISTER_MAX];
248 /* all send rights */
249 ipc_port_t * XNU_PTRAUTH_SIGNED_PTR("task.itk_dyld_notify") itk_dyld_notify; /* lazy send rights array of size DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT */
250 #if CONFIG_PROC_RESOURCE_LIMITS
251 struct ipc_port * XNU_PTRAUTH_SIGNED_PTR("task.itk_resource_notify") itk_resource_notify; /* a send right to the resource notify port */
252 #endif /* CONFIG_PROC_RESOURCE_LIMITS */
253 struct ipc_space * XNU_PTRAUTH_SIGNED_PTR("task.itk_space") itk_space;
254
255 ledger_t ledger;
256 /* Synchronizer ownership information */
257 queue_head_t semaphore_list; /* list of owned semaphores */
258 int semaphores_owned; /* number of semaphores owned */
259
260 unsigned int priv_flags; /* privilege resource flags */
261 #define VM_BACKING_STORE_PRIV 0x1
262
263 MACHINE_TASK
264
265 counter_t faults; /* faults counter */
266 counter_t pageins; /* pageins counter */
267 counter_t cow_faults; /* copy on write fault counter */
268 counter_t messages_sent; /* messages sent counter */
269 counter_t messages_received; /* messages received counter */
270 uint32_t decompressions; /* decompression counter */
271 uint32_t syscalls_mach; /* mach system call counter */
272 uint32_t syscalls_unix; /* unix system call counter */
273 uint32_t c_switch; /* total context switches */
274 uint32_t p_switch; /* total processor switches */
275 uint32_t ps_switch; /* total pset switches */
276
277 #ifdef MACH_BSD
278 struct proc_ro * bsd_info_ro;
279 #endif
280 kcdata_descriptor_t corpse_info;
281 uint64_t crashed_thread_id;
282 queue_chain_t corpse_tasks;
283 #ifdef CONFIG_MACF
284 struct label * crash_label;
285 #endif
286 volatile uint32_t t_flags; /* general-purpose task flags protected by task_lock (TL) */
287 #define TF_NONE 0
288 #define TF_64B_ADDR 0x00000001 /* task has 64-bit addressing */
289 #define TF_64B_DATA 0x00000002 /* task has 64-bit data registers */
290 #define TF_CPUMON_WARNING 0x00000004 /* task has at least one thread in CPU usage warning zone */
291 #define TF_WAKEMON_WARNING 0x00000008 /* task is in wakeups monitor warning zone */
292 #define TF_TELEMETRY (TF_CPUMON_WARNING | TF_WAKEMON_WARNING) /* task is a telemetry participant */
293 #define TF_GPU_DENIED 0x00000010 /* task is not allowed to access the GPU */
294 #define TF_PENDING_CORPSE 0x00000040 /* task corpse has not been reported yet */
295 #define TF_CORPSE_FORK 0x00000080 /* task is a forked corpse */
296 #define TF_CA_CLIENT_WI 0x00000800 /* task has CA_CLIENT work interval */
297 #define TF_DARKWAKE_MODE 0x00001000 /* task is in darkwake mode */
298 #define TF_NO_SMT 0x00002000 /* task threads must not be paired with SMT threads */
299 #define TF_SYS_VERSION_COMPAT 0x00008000 /* shim task accesses to OS version data (macOS - app compatibility) */
300 #define TF_TECS 0x00020000 /* task threads must enable CPU security */
301 #if defined(__x86_64__)
302 #define TF_INSN_COPY_OPTOUT 0x00040000 /* task threads opt out of unhandled-fault instruction stream collection */
303 #endif
304 #define TF_COALITION_MEMBER 0x00080000 /* task is a member of a coalition */
305 #define TF_NO_CORPSE_FORKING 0x00100000 /* do not fork a corpse for this task */
306 #define TF_USE_PSET_HINT_CLUSTER_TYPE 0x00200000 /* bind task to task->pset_hint->pset_cluster_type */
307 #define TF_DYLD_ALL_IMAGE_FINAL 0x00400000 /* all_image_info_addr can no longer be changed */
308 #define TF_HASPROC 0x00800000 /* task points to a proc */
309 #define TF_HAS_REPLY_PORT_TELEMETRY 0x10000000 /* Rate limit telemetry for reply port security semantics violations rdar://100244531 */
310 #define TF_HAS_EXCEPTION_TELEMETRY 0x20000000 /* Rate limit telemetry for exception identity violations rdar://100729339 */
311 #define TF_GAME_MODE 0x40000000 /* Set the game mode bit for CLPC */
312
313 /*
314 * WARNING: These TF_ and TFRO_ flags are NOT automatically inherited by a child of fork
315 * If you believe something should be inherited, you must manually inherit the flags in `task_create_internal`
316 */
317
318 /*
319 * RO-protected flags:
320 */
321 #define TFRO_CORPSE 0x00000020 /* task is a corpse */
322 #define TFRO_HARDENED 0x00000100 /* task is a hardened runtime binary */
323 #if XNU_TARGET_OS_OSX
324 #define TFRO_MACH_HARDENING_OPT_OUT 0x00000200 /* task might load third party plugins on macOS and should be opted out of mach hardening */
325 #endif /* XNU_TARGET_OS_OSX */
326 #define TFRO_PLATFORM 0x00000400 /* task is a platform binary */
327 #define TFRO_FILTER_MSG 0x00004000 /* task calls into message filter callback before sending a message */
328 #define TFRO_PAC_EXC_FATAL 0x00010000 /* task is marked a corpse if a PAC exception occurs */
329 #define TFRO_PAC_ENFORCE_USER_STATE 0x01000000 /* Enforce user and kernel signed thread state */
330
331 /*
332 * Task is running within a 64-bit address space.
333 */
334 #define task_has_64Bit_addr(task) \
335 (((task)->t_flags & TF_64B_ADDR) != 0)
336 #define task_set_64Bit_addr(task) \
337 ((task)->t_flags |= TF_64B_ADDR)
338 #define task_clear_64Bit_addr(task) \
339 ((task)->t_flags &= ~TF_64B_ADDR)
340
341 /*
342 * Task is using 64-bit machine state.
343 */
344 #define task_has_64Bit_data(task) \
345 (((task)->t_flags & TF_64B_DATA) != 0)
346 #define task_set_64Bit_data(task) \
347 ((task)->t_flags |= TF_64B_DATA)
348 #define task_clear_64Bit_data(task) \
349 ((task)->t_flags &= ~TF_64B_DATA)
350
351 #define task_corpse_pending_report(task) \
352 (((task)->t_flags & TF_PENDING_CORPSE) != 0)
353
354 #define task_set_corpse_pending_report(task) \
355 ((task)->t_flags |= TF_PENDING_CORPSE)
356
357 #define task_clear_corpse_pending_report(task) \
358 ((task)->t_flags &= ~TF_PENDING_CORPSE)
359
360 #define task_is_a_corpse_fork(task) \
361 (((task)->t_flags & TF_CORPSE_FORK) != 0)
362
363 #define task_set_coalition_member(task) \
364 ((task)->t_flags |= TF_COALITION_MEMBER)
365
366 #define task_clear_coalition_member(task) \
367 ((task)->t_flags &= ~TF_COALITION_MEMBER)
368
369 #define task_is_coalition_member(task) \
370 (((task)->t_flags & TF_COALITION_MEMBER) != 0)
371
372 #define task_has_proc(task) \
373 (((task)->t_flags & TF_HASPROC) != 0)
374
375 #define task_set_has_proc(task) \
376 ((task)->t_flags |= TF_HASPROC)
377
378 #define task_clear_has_proc(task) \
379 ((task)->t_flags &= ~TF_HASPROC)
380
381 #define task_has_reply_port_telemetry(task) \
382 (((task)->t_flags & TF_HAS_REPLY_PORT_TELEMETRY) != 0)
383
384 #define task_set_reply_port_telemetry(task) \
385 ((task)->t_flags |= TF_HAS_REPLY_PORT_TELEMETRY)
386
387 #define task_has_exception_telemetry(task) \
388 (((task)->t_flags & TF_HAS_EXCEPTION_TELEMETRY) != 0)
389
390 #define task_set_exception_telemetry(task) \
391 ((task)->t_flags |= TF_HAS_EXCEPTION_TELEMETRY)
392
393 uint32_t t_procflags; /* general-purpose task flags protected by proc_lock (PL) */
394 #define TPF_NONE 0
395 #define TPF_DID_EXEC 0x00000001 /* task has been execed to a new task */
396 #define TPF_EXEC_COPY 0x00000002 /* task is the new copy of an exec */
397
398 #define task_did_exec_internal(task) \
399 (((task)->t_procflags & TPF_DID_EXEC) != 0)
400
401 #define task_is_exec_copy_internal(task) \
402 (((task)->t_procflags & TPF_EXEC_COPY) != 0)
403
404 mach_vm_address_t all_image_info_addr; /* dyld __all_image_info */
405 mach_vm_size_t all_image_info_size; /* section location and size */
406
407 #if CONFIG_CPU_COUNTERS
408 #define TASK_KPC_FORCED_ALL_CTRS 0x2 /* Bit in "t_kpc" signifying this task forced all counters */
409 uint32_t t_kpc; /* kpc flags */
410 #endif /* CONFIG_CPU_COUNTERS */
411
412 bool pidsuspended; /* pid_suspend called; no threads can execute */
413 bool frozen; /* frozen; private resident pages committed to swap */
414 bool changing_freeze_state; /* in the process of freezing or thawing */
415 bool is_large_corpse;
416 uint16_t policy_ru_cpu :4,
417 policy_ru_cpu_ext :4,
418 applied_ru_cpu :4,
419 applied_ru_cpu_ext :4;
420 uint8_t rusage_cpu_flags;
421 uint8_t rusage_cpu_percentage; /* Task-wide CPU limit percentage */
422 uint8_t rusage_cpu_perthr_percentage; /* Per-thread CPU limit percentage */
423 #if MACH_ASSERT
424 int8_t suspends_outstanding; /* suspends this task performed in excess of resumes */
425 #endif
426 uint8_t t_returnwaitflags;
427 #define TWF_NONE 0
428 #define TRW_LRETURNWAIT 0x01 /* task is waiting for fork/posix_spawn/exec to complete */
429 #define TRW_LRETURNWAITER 0x02 /* task is waiting for TRW_LRETURNWAIT to get cleared */
430 #define TRW_LEXEC_COMPLETE 0x04 /* thread should call exec complete */
431
432 #if CONFIG_EXCLAVES
433 uint8_t t_exclave_state;
434 #define TES_NONE 0
435 #define TES_CONCLAVE_TAINTED 0x01 /* Task has talked to conclave, xnu has tainted the process */
436 #define TES_CONCLAVE_UNTAINTABLE 0x02 /* Task can not be tainted by xnu when it talks to conclave */
437 #endif /* CONFIG_EXCLAVES */
438
439 #if __has_feature(ptrauth_calls)
440 bool shared_region_auth_remapped; /* authenticated sections ready for use */
441 char *shared_region_id; /* determines which ptr auth key to use */
442 #endif /* __has_feature(ptrauth_calls) */
443 struct vm_shared_region *shared_region;
444
445 uint64_t rusage_cpu_interval; /* Task-wide CPU limit interval */
446 uint64_t rusage_cpu_perthr_interval; /* Per-thread CPU limit interval */
447 uint64_t rusage_cpu_deadline;
448 thread_call_t rusage_cpu_callt;
449 #if CONFIG_TASKWATCH
450 queue_head_t task_watchers; /* app state watcher threads */
451 int num_taskwatchers;
452 int watchapplying;
453 #endif /* CONFIG_TASKWATCH */
454
455 struct bank_task *bank_context; /* pointer to per task bank structure */
456
457 #if IMPORTANCE_INHERITANCE
458 struct ipc_importance_task *task_imp_base; /* Base of IPC importance chain */
459 #endif /* IMPORTANCE_INHERITANCE */
460
461 vm_extmod_statistics_data_t extmod_statistics;
462
463 struct task_requested_policy requested_policy;
464 struct task_effective_policy effective_policy;
465
466 /*
467 * Can be merged with imp_donor bits, once the IMPORTANCE_INHERITANCE macro goes away.
468 */
469 uint32_t low_mem_notified_warn :1, /* warning low memory notification is sent to the task */
470 low_mem_notified_critical :1, /* critical low memory notification is sent to the task */
471 purged_memory_warn :1, /* purgeable memory of the task is purged for warning level pressure */
472 purged_memory_critical :1, /* purgeable memory of the task is purged for critical level pressure */
473 low_mem_privileged_listener :1, /* if set, task would like to know about pressure changes before other tasks on the system */
474 mem_notify_reserved :27; /* reserved for future use */
475
476 uint32_t memlimit_is_active :1, /* if set, use active attributes, otherwise use inactive attributes */
477 memlimit_is_fatal :1, /* if set, exceeding current memlimit will prove fatal to the task */
478 memlimit_active_exc_resource :1, /* if set, suppress exc_resource exception when task exceeds active memory limit */
479 memlimit_inactive_exc_resource :1, /* if set, suppress exc_resource exception when task exceeds inactive memory limit */
480 memlimit_attrs_reserved :28; /* reserved for future use */
481
482 io_stat_info_t task_io_stats;
483
484 struct task_writes_counters task_writes_counters_internal;
485 struct task_writes_counters task_writes_counters_external;
486
487 /*
488 * The cpu_time_qos_stats fields are protected by the task lock
489 */
490 struct _cpu_time_qos_stats cpu_time_eqos_stats;
491 struct _cpu_time_qos_stats cpu_time_rqos_stats;
492
493 /* Statistics accumulated for terminated threads from this task */
494 uint32_t task_timer_wakeups_bin_1;
495 uint32_t task_timer_wakeups_bin_2;
496 uint64_t task_gpu_ns;
497
498 uint8_t task_can_transfer_memory_ownership;
499 #if DEVELOPMENT || DEBUG
500 uint8_t task_no_footprint_for_debug;
501 #endif
502 uint8_t task_objects_disowning;
503 uint8_t task_objects_disowned;
504 /* # of purgeable volatile VM objects owned by this task: */
505 int task_volatile_objects;
506 /* # of purgeable but not volatile VM objects owned by this task: */
507 int task_nonvolatile_objects;
508 int task_owned_objects;
509 queue_head_t task_objq;
510 decl_lck_mtx_data(, task_objq_lock); /* protects "task_objq" */
511
512 unsigned int task_thread_limit:16;
513 #if __arm64__
514 unsigned int task_legacy_footprint:1;
515 unsigned int task_extra_footprint_limit:1;
516 unsigned int task_ios13extended_footprint_limit:1;
517 #endif /* __arm64__ */
518 unsigned int task_region_footprint:1;
519 unsigned int task_has_crossed_thread_limit:1;
520 unsigned int task_rr_in_flight:1; /* a t_rr_synchronzie() is in flight */
521 /*
522 * A task's coalition set is "adopted" in task_create_internal
523 * and unset in task_deallocate_internal, so each array member
524 * can be referenced without the task lock.
525 * Note: these fields are protected by coalition->lock,
526 * not the task lock.
527 */
528 coalition_t coalition[COALITION_NUM_TYPES];
529 queue_chain_t task_coalition[COALITION_NUM_TYPES];
530 uint64_t dispatchqueue_offset;
531
532 #if DEVELOPMENT || DEBUG
533 boolean_t task_unnested;
534 int task_disconnected_count;
535 #endif
536
537 #if HYPERVISOR
538 void * XNU_PTRAUTH_SIGNED_PTR("task.hv_task_target") hv_task_target; /* hypervisor virtual machine object associated with this task */
539 #endif /* HYPERVISOR */
540
541 #if CONFIG_SECLUDED_MEMORY
542 uint8_t task_can_use_secluded_mem;
543 uint8_t task_could_use_secluded_mem;
544 uint8_t task_could_also_use_secluded_mem;
545 uint8_t task_suppressed_secluded;
546 #endif /* CONFIG_SECLUDED_MEMORY */
547
548 task_exc_guard_behavior_t task_exc_guard;
549 mach_vm_address_t mach_header_vm_address;
550
551 queue_head_t io_user_clients;
552
553 #if CONFIG_FREEZE
554 queue_head_t task_frozen_cseg_q; /* queue of csegs frozen to NAND */
555 #endif /* CONFIG_FREEZE */
556 boolean_t donates_own_pages; /* pages land on the special Q (only swappable pages on iPadOS, early swap on macOS) */
557 uint32_t task_shared_region_slide; /* cached here to avoid locking during telemetry */
558 #if CONFIG_PHYS_WRITE_ACCT
559 uint64_t task_fs_metadata_writes;
560 #endif /* CONFIG_PHYS_WRITE_ACCT */
561 uuid_t task_shared_region_uuid;
562 #if CONFIG_MEMORYSTATUS
563 uint64_t memstat_dirty_start; /* last abstime transition into the dirty band or last call to task_ledger_settle_dirty_time while dirty */
564 #endif /* CONFIG_MEMORYSTATUS */
565 vmobject_list_output_t corpse_vmobject_list;
566 uint64_t corpse_vmobject_list_size;
567 #if CONFIG_DEFERRED_RECLAIM
568 vm_deferred_reclamation_metadata_t deferred_reclamation_metadata; /* Protected by the task lock */
569 #endif /* CONFIG_DEFERRED_RECLAIM */
570
571 #if CONFIG_EXCLAVES
572 void *conclave;
573 void *exclave_crash_info;
574 uint32_t exclave_crash_info_length;
575 #endif /* CONFIG_EXCLAVES */
576 };
577
578 ZONE_DECLARE_ID(ZONE_ID_PROC_TASK, void *);
579 extern zone_t proc_task_zone;
580
581 extern task_control_port_options_t task_get_control_port_options(task_t task);
582 extern void task_set_control_port_options(task_t task, task_control_port_options_t opts);
583
584 /*
585 * EXC_GUARD default delivery behavior for optional Mach port and VM guards.
586 * Applied to new tasks at creation time.
587 */
588 extern task_exc_guard_behavior_t task_exc_guard_default;
589 extern size_t proc_and_task_size;
590 extern void *get_bsdtask_info(task_t t);
591 extern void *task_get_proc_raw(task_t task);
592 static inline void
task_require(struct task * task)593 task_require(struct task *task)
594 {
595 zone_id_require(ZONE_ID_PROC_TASK, proc_and_task_size, task_get_proc_raw(task));
596 }
597
598 /*
599 * task_lock() and task_unlock() need to be callable from the `bsd/` tree of
600 * XNU and are therefore promoted to full functions instead of macros so that
601 * they can be linked against.
602 *
603 * We provide `extern` declarations here for consumers of `task.h` in `osfmk/`,
604 * then separately provide `inline` definitions in `task.c`. Together with the
605 * `BUILD_LTO=1` build argument, this guarantees these functions are always
606 * inlined regardless of whether called from the `osfmk/` tree or `bsd/` tree.
607 */
608 extern void task_lock(task_t);
609 extern void task_unlock(task_t);
610
611 #define task_lock_assert_owned(task) LCK_MTX_ASSERT(&(task)->lock, LCK_MTX_ASSERT_OWNED)
612 #define task_lock_try(task) lck_mtx_try_lock(&(task)->lock)
613
614 #define task_objq_lock_init(task) lck_mtx_init(&(task)->task_objq_lock, &vm_object_lck_grp, &vm_object_lck_attr)
615 #define task_objq_lock_destroy(task) lck_mtx_destroy(&(task)->task_objq_lock, &vm_object_lck_grp)
616 #define task_objq_lock(task) lck_mtx_lock(&(task)->task_objq_lock)
617 #define task_objq_lock_assert_owned(task) LCK_MTX_ASSERT(&(task)->task_objq_lock, LCK_MTX_ASSERT_OWNED)
618 #define task_objq_lock_try(task) lck_mtx_try_lock(&(task)->task_objq_lock)
619 #define task_objq_unlock(task) lck_mtx_unlock(&(task)->task_objq_lock)
620
621 #define itk_lock_init(task) lck_mtx_init(&(task)->itk_lock_data, &ipc_lck_grp, &ipc_lck_attr)
622 #define itk_lock_destroy(task) lck_mtx_destroy(&(task)->itk_lock_data, &ipc_lck_grp)
623 #define itk_lock(task) lck_mtx_lock(&(task)->itk_lock_data)
624 #define itk_unlock(task) lck_mtx_unlock(&(task)->itk_lock_data)
625
626 /* task clear return wait flags */
627 #define TCRW_CLEAR_INITIAL_WAIT 0x1
628 #define TCRW_CLEAR_FINAL_WAIT 0x2
629 #define TCRW_CLEAR_EXEC_COMPLETE 0x4
630 #define TCRW_CLEAR_ALL_WAIT (TCRW_CLEAR_INITIAL_WAIT | TCRW_CLEAR_FINAL_WAIT)
631
632 /* Initialize task module */
633 extern void task_init(void);
634
635 /* coalition_init() calls this to initialize ledgers before task_init() */
636 extern void init_task_ledgers(void);
637
638 extern task_t current_task(void) __pure2;
639
640 extern bool task_is_driver(task_t task);
641 extern uint32_t task_ro_flags_get(task_t task);
642 extern void task_ro_flags_set(task_t task, uint32_t flags);
643 extern void task_ro_flags_clear(task_t task, uint32_t flags);
644
645 extern lck_attr_t task_lck_attr;
646 extern lck_grp_t task_lck_grp;
647
648 struct task_watchport_elem {
649 task_t twe_task;
650 ipc_port_t twe_port; /* (Space lock) */
651 ipc_port_t XNU_PTRAUTH_SIGNED_PTR("twe_pdrequest") twe_pdrequest;
652 };
653
654 struct task_watchports {
655 os_refcnt_t tw_refcount; /* (Space lock) */
656 task_t tw_task; /* (Space lock) & tw_refcount == 0 */
657 thread_t tw_thread; /* (Space lock) & tw_refcount == 0 */
658 uint32_t tw_elem_array_count; /* (Space lock) */
659 struct task_watchport_elem tw_elem[]; /* (Space lock) & (Portlock) & (mq lock) */
660 };
661
662 #define task_watchports_retain(x) (os_ref_retain(&(x)->tw_refcount))
663 #define task_watchports_release(x) (os_ref_release(&(x)->tw_refcount))
664
665 #define task_watchport_elem_init(elem, task, port) \
666 do { \
667 (elem)->twe_task = (task); \
668 (elem)->twe_port = (port); \
669 (elem)->twe_pdrequest = IP_NULL; \
670 } while(0)
671
672 #define task_watchport_elem_clear(elem) task_watchport_elem_init((elem), NULL, NULL)
673
674 extern void
675 task_add_turnstile_watchports(
676 task_t task,
677 thread_t thread,
678 ipc_port_t *portwatch_ports,
679 uint32_t portwatch_count);
680
681 extern void
682 task_watchport_elem_deallocate(
683 struct task_watchport_elem *watchport_elem);
684
685 extern boolean_t
686 task_has_watchports(task_t task);
687
688 void
689 task_dyld_process_info_update_helper(
690 task_t task,
691 size_t active_count,
692 vm_map_address_t magic_addr,
693 ipc_port_t *release_ports,
694 size_t release_count);
695
696 extern kern_return_t
697 task_suspend2_mig(
698 task_t task,
699 task_suspension_token_t *suspend_token);
700
701 extern kern_return_t
702 task_suspend2_external(
703 task_t task,
704 task_suspension_token_t *suspend_token);
705
706 extern kern_return_t
707 task_resume2_mig(
708 task_suspension_token_t suspend_token);
709
710 extern kern_return_t
711 task_resume2_external(
712 task_suspension_token_t suspend_token);
713
714 extern void
715 task_suspension_token_deallocate_grp(
716 task_suspension_token_t suspend_token,
717 task_grp_t grp);
718
719 extern ipc_port_t
720 convert_task_to_port_with_flavor(
721 task_t task,
722 mach_task_flavor_t flavor,
723 task_grp_t grp);
724
725 extern task_t current_task_early(void) __pure2;
726
727 #else /* MACH_KERNEL_PRIVATE */
728
729 __BEGIN_DECLS
730
731 extern task_t current_task(void) __pure2;
732
733 extern bool task_is_driver(task_t task);
734
735 #define TF_NONE 0
736
737 #define TWF_NONE 0
738 #define TRW_LRETURNWAIT 0x01 /* task is waiting for fork/posix_spawn/exec to complete */
739 #define TRW_LRETURNWAITER 0x02 /* task is waiting for TRW_LRETURNWAIT to get cleared */
740 #define TRW_LEXEC_COMPLETE 0x04 /* thread should call exec complete */
741
742 /* task clear return wait flags */
743 #define TCRW_CLEAR_INITIAL_WAIT 0x1
744 #define TCRW_CLEAR_FINAL_WAIT 0x2
745 #define TCRW_CLEAR_EXEC_COMPLETE 0x4
746 #define TCRW_CLEAR_ALL_WAIT (TCRW_CLEAR_INITIAL_WAIT | TCRW_CLEAR_FINAL_WAIT)
747
748
749 #define TPF_NONE 0
750 #define TPF_EXEC_COPY 0x00000002 /* task is the new copy of an exec */
751
752
753 __END_DECLS
754
755 #endif /* MACH_KERNEL_PRIVATE */
756
757 __BEGIN_DECLS
758
759 #ifdef KERNEL_PRIVATE
760 extern boolean_t task_is_app_suspended(task_t task);
761 extern bool task_is_exotic(task_t task);
762 extern bool task_is_alien(task_t task);
763 #endif /* KERNEL_PRIVATE */
764
765 #ifdef XNU_KERNEL_PRIVATE
766
767 /* Hold all threads in a task, Wait for task to stop running, just to get off CPU */
768 extern kern_return_t task_hold_and_wait(
769 task_t task);
770
771 /* Release hold on all threads in a task */
772 extern kern_return_t task_release(
773 task_t task);
774
775 /* Suspend/resume a task where the kernel owns the suspend count */
776 extern kern_return_t task_suspend_internal_locked( task_t task);
777 extern kern_return_t task_suspend_internal( task_t task);
778 extern kern_return_t task_resume_internal_locked( task_t task);
779 extern kern_return_t task_resume_internal( task_t task);
780
781 /* Suspends a task by placing a hold on its threads */
782 extern kern_return_t task_pidsuspend(
783 task_t task);
784
785 /* Resumes a previously paused task */
786 extern kern_return_t task_pidresume(
787 task_t task);
788
789 extern kern_return_t task_send_trace_memory(
790 task_t task,
791 uint32_t pid,
792 uint64_t uniqueid);
793
794 extern void task_remove_turnstile_watchports(
795 task_t task);
796
797 extern void task_transfer_turnstile_watchports(
798 task_t old_task,
799 task_t new_task,
800 thread_t new_thread);
801
802 extern kern_return_t
803 task_violated_guard(mach_exception_code_t, mach_exception_subcode_t, void *, bool);
804
805 #if DEVELOPMENT || DEBUG
806
807 extern kern_return_t task_disconnect_page_mappings(
808 task_t task);
809 #endif /* DEVELOPMENT || DEBUG */
810
811 extern void tasks_system_suspend(boolean_t suspend);
812
813 #if CONFIG_FREEZE
814
815 /* Freeze a task's resident pages */
816 extern kern_return_t task_freeze(
817 task_t task,
818 uint32_t *purgeable_count,
819 uint32_t *wired_count,
820 uint32_t *clean_count,
821 uint32_t *dirty_count,
822 uint32_t dirty_budget,
823 uint32_t *shared_count,
824 int *freezer_error_code,
825 boolean_t eval_only);
826
827 /* Thaw a currently frozen task */
828 extern kern_return_t task_thaw(
829 task_t task);
830
831 typedef enum {
832 CREDIT_TO_SWAP = 1,
833 DEBIT_FROM_SWAP = 2
834 } freezer_acct_op_t;
835
836 extern void task_update_frozen_to_swap_acct(
837 task_t task,
838 int64_t amount,
839 freezer_acct_op_t op);
840
841 #endif /* CONFIG_FREEZE */
842
843 /* Halt all other threads in the current task */
844 extern kern_return_t task_start_halt(
845 task_t task);
846
847 /* Wait for other threads to halt and free halting task resources */
848 extern void task_complete_halt(
849 task_t task);
850
851 extern kern_return_t task_terminate_internal(
852 task_t task);
853
854 struct proc_ro;
855 typedef struct proc_ro *proc_ro_t;
856
857 extern kern_return_t task_create_internal(
858 task_t parent_task,
859 proc_ro_t proc_ro,
860 coalition_t *parent_coalitions,
861 boolean_t inherit_memory,
862 boolean_t is_64bit,
863 boolean_t is_64bit_data,
864 uint32_t t_flags,
865 uint32_t t_flags_ro,
866 uint32_t procflags,
867 uint8_t t_returnwaitflags,
868 task_t child_task);
869
870 extern kern_return_t task_set_special_port_internal(
871 task_t task,
872 int which,
873 ipc_port_t port);
874
875 extern kern_return_t task_set_security_tokens(
876 task_t task,
877 security_token_t sec_token,
878 audit_token_t audit_token,
879 host_priv_t host_priv);
880
881 extern kern_return_t task_info(
882 task_t task,
883 task_flavor_t flavor,
884 task_info_t task_info_out,
885 mach_msg_type_number_t *task_info_count);
886
887 /*
888 * Additional fields that aren't exposed through `task_power_info` but needed
889 * by clients of `task_power_info_locked`.
890 */
891 struct task_power_info_extra {
892 uint64_t cycles;
893 uint64_t instructions;
894 uint64_t pcycles;
895 uint64_t pinstructions;
896 uint64_t user_ptime;
897 uint64_t system_ptime;
898 uint64_t runnable_time;
899 uint64_t energy;
900 uint64_t penergy;
901 uint64_t secure_time;
902 uint64_t secure_ptime;
903 };
904
905 void task_power_info_locked(
906 task_t task,
907 task_power_info_t info,
908 gpu_energy_data_t gpu_energy,
909 task_power_info_v2_t infov2,
910 struct task_power_info_extra *extra_info);
911
912 extern uint64_t task_gpu_utilisation(
913 task_t task);
914
915 extern void task_update_cpu_time_qos_stats(
916 task_t task,
917 uint64_t *eqos_stats,
918 uint64_t *rqos_stats);
919
920 extern void task_vtimer_set(
921 task_t task,
922 integer_t which);
923
924 extern void task_vtimer_clear(
925 task_t task,
926 integer_t which);
927
928 extern void task_vtimer_update(
929 task_t task,
930 integer_t which,
931 uint32_t *microsecs);
932
933 #define TASK_VTIMER_USER 0x01
934 #define TASK_VTIMER_PROF 0x02
935 #define TASK_VTIMER_RLIM 0x04
936
937 extern void task_set_64bit(
938 task_t task,
939 boolean_t is_64bit,
940 boolean_t is_64bit_data);
941
942 extern bool task_get_64bit_addr(
943 task_t task);
944
945 extern bool task_get_64bit_data(
946 task_t task);
947
948 extern void task_set_platform_binary(
949 task_t task,
950 boolean_t is_platform);
951
952 #if XNU_TARGET_OS_OSX
953 #if DEVELOPMENT || DEBUG
954 /* Disables task identity security hardening (*_set_exception_ports policy)
955 * for all tasks if amfi_get_out_of_my_way is set. */
956 extern bool AMFI_bootarg_disable_mach_hardening;
957 #endif /* DEVELOPMENT || DEBUG */
958 extern void task_disable_mach_hardening(
959 task_t task);
960
961 extern bool task_opted_out_mach_hardening(
962 task_t task);
963 #endif /* XNU_TARGET_OS_OSX */
964
965 extern boolean_t task_get_platform_binary(
966 task_t task);
967
968 extern void
969 task_set_hardened_runtime(
970 task_t task,
971 bool is_hardened);
972
973 extern boolean_t
974 task_is_hardened_binary(
975 task_t task);
976
977 extern boolean_t task_is_a_corpse(
978 task_t task);
979
980 extern boolean_t task_is_ipc_active(
981 task_t task);
982
983 extern void task_set_corpse(
984 task_t task);
985
986 extern void task_set_exc_guard_ctrl_port_default(
987 task_t task,
988 thread_t main_thread,
989 const char *name,
990 unsigned int namelen,
991 boolean_t is_simulated,
992 uint32_t platform,
993 uint32_t sdk);
994
995 extern void task_set_immovable_pinned(task_t task);
996
997 extern bool task_set_ca_client_wi(
998 task_t task,
999 boolean_t ca_client_wi);
1000
1001 extern kern_return_t task_set_dyld_info(
1002 task_t task,
1003 mach_vm_address_t addr,
1004 mach_vm_size_t size);
1005
1006 extern void task_set_mach_header_address(
1007 task_t task,
1008 mach_vm_address_t addr);
1009
1010 extern void task_set_uniqueid(task_t task);
1011
1012 /* Get number of activations in a task */
1013 extern int get_task_numacts(
1014 task_t task);
1015
1016 extern bool task_donates_own_pages(
1017 task_t task);
1018
1019 struct label;
1020 extern kern_return_t task_collect_crash_info(
1021 task_t task,
1022 #if CONFIG_MACF
1023 struct label *crash_label,
1024 #endif
1025 int is_corpse_fork);
1026 void task_wait_till_threads_terminate_locked(task_t task);
1027
1028 /* JMM - should just be temporary (implementation in bsd_kern still) */
1029 extern void set_bsdtask_info(task_t, void *);
1030 extern uint32_t set_task_loadTag(task_t task, uint32_t loadTag);
1031 extern vm_map_t get_task_map_reference(task_t);
1032 extern vm_map_t swap_task_map(task_t, thread_t, vm_map_t);
1033 extern pmap_t get_task_pmap(task_t);
1034 extern uint64_t get_task_resident_size(task_t);
1035 extern uint64_t get_task_compressed(task_t);
1036 extern uint64_t get_task_resident_max(task_t);
1037 extern uint64_t get_task_phys_footprint(task_t);
1038 #if CONFIG_LEDGER_INTERVAL_MAX
1039 extern uint64_t get_task_phys_footprint_interval_max(task_t, int reset);
1040 #endif /* CONFIG_FOOTPRINT_INTERVAL_MAX */
1041 extern uint64_t get_task_phys_footprint_lifetime_max(task_t);
1042 extern uint64_t get_task_phys_footprint_limit(task_t);
1043 extern uint64_t get_task_purgeable_size(task_t);
1044 extern uint64_t get_task_cpu_time(task_t);
1045 extern uint64_t get_task_dispatchqueue_offset(task_t);
1046 extern uint64_t get_task_dispatchqueue_serialno_offset(task_t);
1047 extern uint64_t get_task_dispatchqueue_label_offset(task_t);
1048 extern uint64_t get_task_uniqueid(task_t task);
1049 extern int get_task_version(task_t task);
1050
1051 extern uint64_t get_task_internal(task_t);
1052 extern uint64_t get_task_internal_compressed(task_t);
1053 extern uint64_t get_task_purgeable_nonvolatile(task_t);
1054 extern uint64_t get_task_purgeable_nonvolatile_compressed(task_t);
1055 extern uint64_t get_task_iokit_mapped(task_t);
1056 extern uint64_t get_task_alternate_accounting(task_t);
1057 extern uint64_t get_task_alternate_accounting_compressed(task_t);
1058 extern uint64_t get_task_memory_region_count(task_t);
1059 extern uint64_t get_task_page_table(task_t);
1060 #if CONFIG_FREEZE
1061 extern uint64_t get_task_frozen_to_swap(task_t);
1062 #endif
1063 extern uint64_t get_task_network_nonvolatile(task_t);
1064 extern uint64_t get_task_network_nonvolatile_compressed(task_t);
1065 extern uint64_t get_task_wired_mem(task_t);
1066 extern uint32_t get_task_loadTag(task_t task);
1067
1068 extern uint64_t get_task_tagged_footprint(task_t task);
1069 extern uint64_t get_task_tagged_footprint_compressed(task_t task);
1070 extern uint64_t get_task_media_footprint(task_t task);
1071 extern uint64_t get_task_media_footprint_compressed(task_t task);
1072 extern uint64_t get_task_graphics_footprint(task_t task);
1073 extern uint64_t get_task_graphics_footprint_compressed(task_t task);
1074 extern uint64_t get_task_neural_footprint(task_t task);
1075 extern uint64_t get_task_neural_footprint_compressed(task_t task);
1076
1077 extern kern_return_t task_convert_phys_footprint_limit(int, int *);
1078 extern kern_return_t task_set_phys_footprint_limit_internal(task_t, int, int *, boolean_t, boolean_t);
1079 extern kern_return_t task_get_phys_footprint_limit(task_t task, int *limit_mb);
1080 #if DEBUG || DEVELOPMENT
1081 #if CONFIG_MEMORYSTATUS
1082 extern kern_return_t task_set_diag_footprint_limit_internal(task_t, uint64_t, uint64_t *);
1083 extern kern_return_t task_get_diag_footprint_limit_internal(task_t, uint64_t *, bool *);
1084 extern kern_return_t task_set_diag_footprint_limit(task_t task, uint64_t new_limit_mb, uint64_t *old_limit_mb);
1085 #endif /* CONFIG_MEMORYSTATUS */
1086 #endif /* DEBUG || DEVELOPMENT */
1087
1088 extern security_token_t *task_get_sec_token(task_t task);
1089 extern void task_set_sec_token(task_t task, security_token_t *token);
1090 extern audit_token_t *task_get_audit_token(task_t task);
1091 extern void task_set_audit_token(task_t task, audit_token_t *token);
1092 extern void task_set_tokens(task_t task, security_token_t *sec_token, audit_token_t *audit_token);
1093 extern boolean_t task_is_privileged(task_t task);
1094 extern uint8_t *task_get_mach_trap_filter_mask(task_t task);
1095 extern void task_set_mach_trap_filter_mask(task_t task, uint8_t *mask);
1096 extern uint8_t *task_get_mach_kobj_filter_mask(task_t task);
1097 extern void task_set_mach_kobj_filter_mask(task_t task, uint8_t *mask);
1098 extern mach_vm_address_t task_get_all_image_info_addr(task_t task);
1099
1100 /* Jetsam memlimit attributes */
1101 extern boolean_t task_get_memlimit_is_active(task_t task);
1102 extern boolean_t task_get_memlimit_is_fatal(task_t task);
1103 extern void task_set_memlimit_is_active(task_t task, boolean_t memlimit_is_active);
1104 extern void task_set_memlimit_is_fatal(task_t task, boolean_t memlimit_is_fatal);
1105 extern boolean_t task_has_triggered_exc_resource(task_t task, boolean_t memlimit_is_active);
1106 extern void task_mark_has_triggered_exc_resource(task_t task, boolean_t memlimit_is_active);
1107
1108 extern uint64_t task_get_dirty_start(task_t task);
1109 extern void task_set_dirty_start(task_t task, uint64_t start);
1110
1111 extern void task_set_thread_limit(task_t task, uint16_t thread_limit);
1112 #if CONFIG_PROC_RESOURCE_LIMITS
1113 extern kern_return_t task_set_port_space_limits(task_t task, uint32_t soft_limit, uint32_t hard_limit);
1114 #endif /* CONFIG_PROC_RESOURCE_LIMITS */
1115 extern void task_port_space_ast(task_t task);
1116
1117 #if XNU_TARGET_OS_OSX
1118 extern boolean_t task_has_system_version_compat_enabled(task_t task);
1119 extern void task_set_system_version_compat_enabled(task_t task, boolean_t enable_system_version_compat);
1120 #endif
1121
1122 extern boolean_t is_kerneltask(task_t task);
1123 extern boolean_t is_corpsefork(task_t task);
1124
1125 extern kern_return_t check_actforsig(task_t task, thread_t thread, int setast);
1126
1127 extern kern_return_t machine_task_get_state(
1128 task_t task,
1129 int flavor,
1130 thread_state_t state,
1131 mach_msg_type_number_t *state_count);
1132
1133 extern kern_return_t machine_task_set_state(
1134 task_t task,
1135 int flavor,
1136 thread_state_t state,
1137 mach_msg_type_number_t state_count);
1138
1139 extern void machine_task_terminate(task_t task);
1140
1141 extern kern_return_t machine_task_process_signature(task_t task, uint32_t platform, uint32_t sdk, char const **error_msg);
1142
1143 struct _task_ledger_indices {
1144 int cpu_time;
1145 int tkm_private;
1146 int tkm_shared;
1147 int phys_mem;
1148 int wired_mem;
1149 int internal;
1150 int iokit_mapped;
1151 int external;
1152 int reusable;
1153 int alternate_accounting;
1154 int alternate_accounting_compressed;
1155 int page_table;
1156 int phys_footprint;
1157 int internal_compressed;
1158 int purgeable_volatile;
1159 int purgeable_nonvolatile;
1160 int purgeable_volatile_compressed;
1161 int purgeable_nonvolatile_compressed;
1162 int tagged_nofootprint;
1163 int tagged_footprint;
1164 int tagged_nofootprint_compressed;
1165 int tagged_footprint_compressed;
1166 int network_volatile;
1167 int network_nonvolatile;
1168 int network_volatile_compressed;
1169 int network_nonvolatile_compressed;
1170 int media_nofootprint;
1171 int media_footprint;
1172 int media_nofootprint_compressed;
1173 int media_footprint_compressed;
1174 int graphics_nofootprint;
1175 int graphics_footprint;
1176 int graphics_nofootprint_compressed;
1177 int graphics_footprint_compressed;
1178 int neural_nofootprint;
1179 int neural_footprint;
1180 int neural_nofootprint_compressed;
1181 int neural_footprint_compressed;
1182 int platform_idle_wakeups;
1183 int interrupt_wakeups;
1184 #if CONFIG_SCHED_SFI
1185 int sfi_wait_times[MAX_SFI_CLASS_ID];
1186 #endif /* CONFIG_SCHED_SFI */
1187 int cpu_time_billed_to_me;
1188 int cpu_time_billed_to_others;
1189 int physical_writes;
1190 int logical_writes;
1191 int logical_writes_to_external;
1192 int energy_billed_to_me;
1193 int energy_billed_to_others;
1194 #if CONFIG_MEMORYSTATUS
1195 int memorystatus_dirty_time;
1196 #endif /* CONFIG_MEMORYSTATUS */
1197 #if DEBUG || DEVELOPMENT
1198 int pages_grabbed;
1199 int pages_grabbed_kern;
1200 int pages_grabbed_iopl;
1201 int pages_grabbed_upl;
1202 #endif
1203 #if CONFIG_FREEZE
1204 int frozen_to_swap;
1205 #endif /* CONFIG_FREEZE */
1206 #if CONFIG_PHYS_WRITE_ACCT
1207 int fs_metadata_writes;
1208 #endif /* CONFIG_PHYS_WRITE_ACCT */
1209 int swapins;
1210 };
1211
1212 /*
1213 * Many of the task ledger entries use a reduced feature set
1214 * (specifically they just use LEDGER_ENTRY_ALLOW_PANIC_ON_NEGATIVE)
1215 * and are stored in a smaller entry structure.
1216 * That structure is an implementation detail of the ledger.
1217 * But on PPL systems, the task ledger's memory is managed by the PPL
1218 * and it has to determine the size of the task ledger at compile time.
1219 * This define specifies the number of small entries so the PPL can
1220 * properly determine the ledger's size.
1221 *
1222 * If you add a new entry with only the
1223 * LEDGER_ENTRY_ALLOW_PANIC_ON_NEGATIVE | LEDGER_ENTRY_ALLOW_INACTIVE
1224 * flags, you need to increment this count.
1225 * Otherwise, PPL systems will panic at boot.
1226 */
1227 #if DEVELOPMENT || DEBUG
1228 #define TASK_LEDGER_NUM_SMALL_INDICES 33
1229 #else
1230 #define TASK_LEDGER_NUM_SMALL_INDICES 29
1231 #endif /* DEVELOPMENT || DEBUG */
1232 extern struct _task_ledger_indices task_ledgers;
1233
1234 /* requires task to be unlocked, returns a referenced thread */
1235 thread_t task_findtid(task_t task, uint64_t tid);
1236 int pid_from_task(task_t task);
1237
1238 extern kern_return_t task_wakeups_monitor_ctl(task_t task, uint32_t *rate_hz, int32_t *flags);
1239 extern kern_return_t task_cpu_usage_monitor_ctl(task_t task, uint32_t *flags);
1240 extern void task_rollup_accounting_info(task_t new_task, task_t parent_task);
1241 extern kern_return_t task_io_monitor_ctl(task_t task, uint32_t *flags);
1242 extern void task_set_did_exec_flag(task_t task);
1243 extern void task_clear_exec_copy_flag(task_t task);
1244 extern boolean_t task_is_exec_copy(task_t);
1245 extern boolean_t task_did_exec(task_t task);
1246 extern boolean_t task_is_active(task_t task);
1247 extern boolean_t task_is_halting(task_t task);
1248 extern void task_clear_return_wait(task_t task, uint32_t flags);
1249 extern void task_wait_to_return(void) __attribute__((noreturn));
1250 extern event_t task_get_return_wait_event(task_t task);
1251
1252 extern void task_bank_reset(task_t task);
1253 extern void task_bank_init(task_t task);
1254
1255 #if CONFIG_MEMORYSTATUS
1256 extern void task_ledger_settle_dirty_time(task_t t);
1257 #endif /* CONFIG_MEMORYSTATUS */
1258
1259 #if CONFIG_ARCADE
1260 extern void task_prep_arcade(task_t task, thread_t thread);
1261 #endif /* CONFIG_ARCADE */
1262
1263 extern int task_pid(task_t task);
1264
1265 #if __has_feature(ptrauth_calls)
1266 char *task_get_vm_shared_region_id_and_jop_pid(task_t task, uint64_t *);
1267 void task_set_shared_region_id(task_t task, char *id);
1268 #endif /* __has_feature(ptrauth_calls) */
1269
1270 extern boolean_t task_has_assertions(task_t task);
1271 /* End task_policy */
1272
1273 extern void task_set_gpu_denied(task_t task, boolean_t denied);
1274 extern boolean_t task_is_gpu_denied(task_t task);
1275
1276 extern void task_set_game_mode(task_t task, bool enabled);
1277 /* returns true if update must be pushed to coalition (Automatically handled by task_set_game_mode) */
1278 extern bool task_set_game_mode_locked(task_t task, bool enabled);
1279 extern bool task_get_game_mode(task_t task);
1280
1281 extern queue_head_t * task_io_user_clients(task_t task);
1282 extern void task_set_message_app_suspended(task_t task, boolean_t enable);
1283
1284 extern void task_copy_fields_for_exec(task_t dst_task, task_t src_task);
1285
1286 extern void task_copy_vmobjects(task_t task, vm_object_query_t query, size_t len, size_t *num);
1287 extern void task_get_owned_vmobjects(task_t task, size_t buffer_size, vmobject_list_output_t buffer, size_t* output_size, size_t* entries);
1288 extern void task_store_owned_vmobject_info(task_t to_task, task_t from_task);
1289
1290 extern void task_set_filter_msg_flag(task_t task, boolean_t flag);
1291 extern boolean_t task_get_filter_msg_flag(task_t task);
1292
1293 #if __has_feature(ptrauth_calls)
1294 extern bool task_is_pac_exception_fatal(task_t task);
1295 extern void task_set_pac_exception_fatal_flag(task_t task);
1296 #endif /*__has_feature(ptrauth_calls)*/
1297
1298 extern bool task_needs_user_signed_thread_state(task_t task);
1299 extern void task_set_tecs(task_t task);
1300 extern void task_get_corpse_vmobject_list(task_t task, vmobject_list_output_t* list, size_t* list_size);
1301
1302 extern boolean_t task_corpse_forking_disabled(task_t task);
1303
1304 void __attribute__((noinline)) SENDING_NOTIFICATION__THIS_PROCESS_HAS_TOO_MANY_MACH_PORTS(task_t task,
1305 uint32_t current_size, uint32_t soft_limit, uint32_t hard_limit);
1306
1307 extern int get_task_cdhash(task_t task, char cdhash[CS_CDHASH_LEN]);
1308
1309 extern boolean_t kdp_task_is_locked(task_t task);
1310
1311 /* Kernel side prototypes for MIG routines */
1312 extern kern_return_t task_get_exception_ports(
1313 task_t task,
1314 exception_mask_t exception_mask,
1315 exception_mask_array_t masks,
1316 mach_msg_type_number_t *CountCnt,
1317 exception_port_array_t ports,
1318 exception_behavior_array_t behaviors,
1319 thread_state_flavor_array_t flavors);
1320
1321 #if CONFIG_EXCLAVES
1322 int task_add_conclave(task_t task, const char *task_conclave_id);
1323 kern_return_t task_start_conclave_and_lookup_resources(mach_port_name_t port,
1324 bool conclave_start, struct exclaves_resource_user *resource_user,
1325 int resource_count);
1326 kern_return_t task_inherit_conclave(task_t old_task, task_t new_task);
1327 void task_clear_conclave(task_t task);
1328 void task_stop_conclave(task_t task, bool gather_crash_bt);
1329 kern_return_t task_stop_conclave_upcall(void);
1330 kern_return_t task_suspend_conclave_upcall(uint64_t *, size_t);
1331 struct xnuupcalls_conclavesharedbuffer_s;
1332 kern_return_t task_crash_info_conclave_upcall(task_t task,
1333 const struct xnuupcalls_conclavesharedbuffer_s *shared_buf, uint32_t length);
1334 typedef struct exclaves_resource exclaves_resource_t;
1335 exclaves_resource_t *task_get_conclave(task_t task);
1336 void task_set_conclave_untaintable(task_t task);
1337 void task_add_conclave_crash_info(task_t task, void *crash_info_ptr);
1338 //Changing this would also warrant a change in ConclaveSharedBuffer
1339 #define CONCLAVE_CRASH_BUFFER_PAGECOUNT 2
1340
1341 #endif /* CONFIG_EXCLAVES */
1342
1343 #endif /* XNU_KERNEL_PRIVATE */
1344 #ifdef KERNEL_PRIVATE
1345
1346 extern void *get_bsdtask_info(task_t);
1347 extern void *get_bsdthreadtask_info(thread_t);
1348 extern void task_bsdtask_kill(task_t);
1349 extern vm_map_t get_task_map(task_t);
1350 extern ledger_t get_task_ledger(task_t);
1351
1352 extern boolean_t get_task_pidsuspended(task_t);
1353 extern boolean_t get_task_suspended(task_t);
1354 extern boolean_t get_task_frozen(task_t);
1355
1356 /*
1357 * Flavors of convert_task_to_port. XNU callers get convert_task_to_port_kernel,
1358 * external callers get convert_task_to_port_external.
1359 */
1360 extern ipc_port_t convert_task_to_port(task_t);
1361 extern ipc_port_t convert_task_to_port_kernel(task_t);
1362 extern ipc_port_t convert_task_to_port_external(task_t);
1363 extern ipc_port_t convert_task_to_port_pinned(task_t);
1364
1365 extern ipc_port_t convert_task_read_to_port(task_t);
1366 extern ipc_port_t convert_task_read_to_port_kernel(task_read_t);
1367 extern ipc_port_t convert_task_read_to_port_external(task_t);
1368
1369 extern ipc_port_t convert_task_inspect_to_port(task_inspect_t);
1370 extern ipc_port_t convert_task_name_to_port(task_name_t);
1371
1372 extern ipc_port_t convert_corpse_to_port_and_nsrequest(task_t task);
1373
1374 extern ipc_port_t convert_task_suspension_token_to_port(task_suspension_token_t task);
1375 /* Convert from a port (in this case, an SO right to a task's resume port) to a task. */
1376 extern task_suspension_token_t convert_port_to_task_suspension_token(ipc_port_t port);
1377
1378 extern void task_suspension_send_once(ipc_port_t port);
1379
1380 #define TASK_WRITE_IMMEDIATE 0x1
1381 #define TASK_WRITE_DEFERRED 0x2
1382 #define TASK_WRITE_INVALIDATED 0x4
1383 #define TASK_WRITE_METADATA 0x8
1384 extern void task_update_logical_writes(task_t task, uint32_t io_size, int flags, void *vp);
1385
1386 __enum_decl(task_balance_flags_t, uint8_t, {
1387 TASK_BALANCE_CREDIT = 0x1,
1388 TASK_BALANCE_DEBIT = 0x2,
1389 });
1390
1391 __enum_decl(task_physical_write_flavor_t, uint8_t, {
1392 TASK_PHYSICAL_WRITE_METADATA = 0x1,
1393 });
1394 extern void task_update_physical_writes(task_t task, task_physical_write_flavor_t flavor,
1395 uint64_t io_size, task_balance_flags_t flags);
1396
1397 #if CONFIG_SECLUDED_MEMORY
1398 extern void task_set_can_use_secluded_mem(
1399 task_t task,
1400 boolean_t can_use_secluded_mem);
1401 extern void task_set_could_use_secluded_mem(
1402 task_t task,
1403 boolean_t could_use_secluded_mem);
1404 extern void task_set_could_also_use_secluded_mem(
1405 task_t task,
1406 boolean_t could_also_use_secluded_mem);
1407 extern boolean_t task_can_use_secluded_mem(
1408 task_t task,
1409 boolean_t is_allocate);
1410 extern boolean_t task_could_use_secluded_mem(task_t task);
1411 extern boolean_t task_could_also_use_secluded_mem(task_t task);
1412 #endif /* CONFIG_SECLUDED_MEMORY */
1413
1414 extern void task_set_darkwake_mode(task_t, boolean_t);
1415 extern boolean_t task_get_darkwake_mode(task_t);
1416
1417 #if __arm64__
1418 extern void task_set_legacy_footprint(task_t task);
1419 extern void task_set_extra_footprint_limit(task_t task);
1420 extern void task_set_ios13extended_footprint_limit(task_t task);
1421 #endif /* __arm64__ */
1422
1423 #if CONFIG_MACF
1424 extern struct label *get_task_crash_label(task_t task);
1425 extern void set_task_crash_label(task_t task, struct label *label);
1426 #endif /* CONFIG_MACF */
1427
1428 #endif /* KERNEL_PRIVATE */
1429
1430 extern task_t kernel_task;
1431
1432 extern void task_name_deallocate_mig(
1433 task_name_t task_name);
1434
1435 extern void task_policy_set_deallocate_mig(
1436 task_policy_set_t task_policy_set);
1437
1438 extern void task_policy_get_deallocate_mig(
1439 task_policy_get_t task_policy_get);
1440
1441 extern void task_inspect_deallocate_mig(
1442 task_inspect_t task_inspect);
1443
1444 extern void task_read_deallocate_mig(
1445 task_read_t task_read);
1446
1447 extern void task_suspension_token_deallocate(
1448 task_suspension_token_t token);
1449
1450 extern boolean_t task_self_region_footprint(void);
1451 extern void task_self_region_footprint_set(boolean_t newval);
1452 extern void task_ledgers_footprint(ledger_t ledger,
1453 ledger_amount_t *ledger_resident,
1454 ledger_amount_t *ledger_compressed);
1455 extern void task_set_memory_ownership_transfer(
1456 task_t task,
1457 boolean_t value);
1458
1459 #if DEVELOPMENT || DEBUG
1460 extern void task_set_no_footprint_for_debug(
1461 task_t task,
1462 boolean_t value);
1463 extern int task_get_no_footprint_for_debug(
1464 task_t task);
1465 #endif /* DEVELOPMENT || DEBUG */
1466
1467 #ifdef KERNEL_PRIVATE
1468 extern kern_return_t task_get_suspend_stats(task_t task, task_suspend_stats_t stats);
1469 extern kern_return_t task_get_suspend_stats_kdp(task_t task, task_suspend_stats_t stats);
1470 #endif /* KERNEL_PRIVATE*/
1471
1472 #ifdef XNU_KERNEL_PRIVATE
1473 extern kern_return_t task_get_suspend_sources(task_t task, task_suspend_source_array_t sources);
1474 extern kern_return_t task_get_suspend_sources_kdp(task_t task, task_suspend_source_array_t sources);
1475 #endif /* XNU_KERNEL_PRIVATE */
1476
1477 #if CONFIG_ROSETTA
1478 extern bool task_is_translated(task_t task);
1479 #endif
1480
1481
1482
1483 #ifdef MACH_KERNEL_PRIVATE
1484 void task_procname(task_t task, char *buf, int size);
1485 void task_best_name(task_t task, char *buf, size_t size);
1486 #endif /* MACH_KERNEL_PRIVATE */
1487
1488 __END_DECLS
1489
1490 #endif /* _KERN_TASK_H_ */
1491