1 /*
2 * Copyright (c) 2006-2018 Apple Inc. All rights reserved.
3 *
4 * @APPLE_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. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24 #include <sys/cdefs.h>
25 #include <unistd.h>
26 #include <errno.h>
27 #include <string.h>
28 #include <strings.h>
29 #include <stdlib.h>
30 #include <sys/errno.h>
31 #include <sys/msgbuf.h>
32 #include <sys/resource.h>
33 #include <sys/process_policy.h>
34 #include <sys/event.h>
35 #include <mach/message.h>
36
37 #include "libproc_internal.h"
38
39 int __proc_info(int callnum, int pid, int flavor, uint64_t arg, void * buffer, int buffersize);
40 int __proc_info_extended_id(int32_t callnum, int32_t pid, uint32_t flavor, uint32_t flags, uint64_t ext_id, uint64_t arg, user_addr_t buffer, int32_t buffersize);
41 __private_extern__ int proc_setthreadname(void * buffer, int buffersize);
42 int __process_policy(int scope, int action, int policy, int policy_subtype, proc_policy_attribute_t * attrp, pid_t target_pid, uint64_t target_threadid);
43 int proc_rlimit_control(pid_t pid, int flavor, void *arg);
44
45 int
proc_listpids(uint32_t type,uint32_t typeinfo,void * buffer,int buffersize)46 proc_listpids(uint32_t type, uint32_t typeinfo, void *buffer, int buffersize)
47 {
48 int retval;
49
50 if ((type >= PROC_ALL_PIDS) || (type <= PROC_PPID_ONLY)) {
51 if ((retval = __proc_info(PROC_INFO_CALL_LISTPIDS, type, typeinfo, (uint64_t)0, buffer, buffersize)) == -1) {
52 return 0;
53 }
54 } else {
55 errno = EINVAL;
56 retval = 0;
57 }
58 return retval;
59 }
60
61
62 int
proc_listallpids(void * buffer,int buffersize)63 proc_listallpids(void * buffer, int buffersize)
64 {
65 int numpids;
66 numpids = proc_listpids(PROC_ALL_PIDS, (uint32_t)0, buffer, buffersize);
67
68 if (numpids == -1) {
69 return -1;
70 } else {
71 return numpids / sizeof(int);
72 }
73 }
74
75 int
proc_listpgrppids(pid_t pgrpid,void * buffer,int buffersize)76 proc_listpgrppids(pid_t pgrpid, void * buffer, int buffersize)
77 {
78 int numpids;
79 numpids = proc_listpids(PROC_PGRP_ONLY, (uint32_t)pgrpid, buffer, buffersize);
80 if (numpids == -1) {
81 return -1;
82 } else {
83 return numpids / sizeof(int);
84 }
85 }
86
87 int
proc_listchildpids(pid_t ppid,void * buffer,int buffersize)88 proc_listchildpids(pid_t ppid, void * buffer, int buffersize)
89 {
90 int numpids;
91 numpids = proc_listpids(PROC_PPID_ONLY, (uint32_t)ppid, buffer, buffersize);
92 if (numpids == -1) {
93 return -1;
94 } else {
95 return numpids / sizeof(int);
96 }
97 }
98
99
100 int
proc_pidinfo(int pid,int flavor,uint64_t arg,void * buffer,int buffersize)101 proc_pidinfo(int pid, int flavor, uint64_t arg, void *buffer, int buffersize)
102 {
103 int retval;
104
105 if ((retval = __proc_info(PROC_INFO_CALL_PIDINFO, pid, flavor, arg, buffer, buffersize)) == -1) {
106 return 0;
107 }
108
109 return retval;
110 }
111
112
113 int
proc_pidoriginatorinfo(int flavor,void * buffer,int buffersize)114 proc_pidoriginatorinfo(int flavor, void *buffer, int buffersize)
115 {
116 int retval;
117
118 if ((retval = __proc_info(PROC_INFO_CALL_PIDORIGINATORINFO, getpid(), flavor, 0, buffer, buffersize)) == -1) {
119 return 0;
120 }
121
122 return retval;
123 }
124
125 int
proc_listcoalitions(int flavor,int coaltype,void * buffer,int buffersize)126 proc_listcoalitions(int flavor, int coaltype, void *buffer, int buffersize)
127 {
128 int retval;
129
130 if ((retval = __proc_info(PROC_INFO_CALL_LISTCOALITIONS, flavor, coaltype, 0, buffer, buffersize)) == -1) {
131 return 0;
132 }
133
134 return retval;
135 }
136
137 int
proc_pid_rusage(int pid,int flavor,rusage_info_t * buffer)138 proc_pid_rusage(int pid, int flavor, rusage_info_t *buffer)
139 {
140 return __proc_info(PROC_INFO_CALL_PIDRUSAGE, pid, flavor, 0, buffer, 0);
141 }
142
143 int
proc_setthread_cpupercent(uint8_t percentage,uint32_t ms_refill)144 proc_setthread_cpupercent(uint8_t percentage, uint32_t ms_refill)
145 {
146 uint32_t arg = 0;
147
148 /* Pack percentage and refill into a 32-bit number to match existing kernel implementation */
149 if ((percentage >= 100) || (ms_refill & ~0xffffffU)) {
150 errno = EINVAL;
151 return -1;
152 }
153
154 arg = ((ms_refill << 8) | percentage);
155
156 return proc_rlimit_control(-1, RLIMIT_THREAD_CPULIMITS, (void *)(uintptr_t)arg);
157 }
158
159 int
proc_pidfdinfo(int pid,int fd,int flavor,void * buffer,int buffersize)160 proc_pidfdinfo(int pid, int fd, int flavor, void * buffer, int buffersize)
161 {
162 int retval;
163
164 if ((retval = __proc_info(PROC_INFO_CALL_PIDFDINFO, pid, flavor, (uint64_t)fd, buffer, buffersize)) == -1) {
165 return 0;
166 }
167
168 return retval;
169 }
170
171
172 int
proc_pidfileportinfo(int pid,uint32_t fileport,int flavor,void * buffer,int buffersize)173 proc_pidfileportinfo(int pid, uint32_t fileport, int flavor, void *buffer, int buffersize)
174 {
175 int retval;
176
177 if ((retval = __proc_info(PROC_INFO_CALL_PIDFILEPORTINFO, pid, flavor, (uint64_t)fileport, buffer, buffersize)) == -1) {
178 return 0;
179 }
180 return retval;
181 }
182
183 int
proc_piddynkqueueinfo(int pid,int flavor,kqueue_id_t kq_id,void * buffer,int buffersize)184 proc_piddynkqueueinfo(int pid, int flavor, kqueue_id_t kq_id, void *buffer, int buffersize)
185 {
186 int ret;
187
188 if ((ret = __proc_info(PROC_INFO_CALL_PIDDYNKQUEUEINFO, pid, flavor, (uint64_t)kq_id, buffer, buffersize)) == -1) {
189 return 0;
190 }
191
192 return ret;
193 }
194
195 int
proc_udata_info(int pid,int flavor,void * buffer,int buffersize)196 proc_udata_info(int pid, int flavor, void *buffer, int buffersize)
197 {
198 return __proc_info(PROC_INFO_CALL_UDATA_INFO, pid, flavor, 0, buffer, buffersize);
199 }
200
201 /* only used by dyld which links with libsystem_kernel.a */
202 __private_extern__ int
proc_set_dyld_all_image_info(void * buffer,int buffersize)203 proc_set_dyld_all_image_info(void *buffer, int buffersize)
204 {
205 return __proc_info(PROC_INFO_CALL_SET_DYLD_IMAGES, getpid(), 0, 0, buffer, buffersize);
206 }
207
208
209 int
proc_name(int pid,void * buffer,uint32_t buffersize)210 proc_name(int pid, void * buffer, uint32_t buffersize)
211 {
212 int retval = 0, len;
213 struct proc_bsdinfo pbsd;
214
215
216 if (buffersize < sizeof(pbsd.pbi_name)) {
217 errno = ENOMEM;
218 return 0;
219 }
220
221 retval = proc_pidinfo(pid, PROC_PIDTBSDINFO, (uint64_t)0, &pbsd, sizeof(struct proc_bsdinfo));
222 if (retval != 0) {
223 if (pbsd.pbi_name[0]) {
224 bcopy(&pbsd.pbi_name, buffer, sizeof(pbsd.pbi_name));
225 } else {
226 bcopy(&pbsd.pbi_comm, buffer, sizeof(pbsd.pbi_comm));
227 }
228 len = (int)strlen(buffer);
229 return len;
230 }
231 return 0;
232 }
233
234 int
proc_regionfilename(int pid,uint64_t address,void * buffer,uint32_t buffersize)235 proc_regionfilename(int pid, uint64_t address, void * buffer, uint32_t buffersize)
236 {
237 int retval;
238 struct proc_regionpath path;
239
240 if (buffersize < MAXPATHLEN) {
241 errno = ENOMEM;
242 return 0;
243 }
244
245 retval = proc_pidinfo(pid, PROC_PIDREGIONPATH, (uint64_t)address, &path, sizeof(struct proc_regionpath));
246 if (retval != 0) {
247 return (int)(strlcpy(buffer, path.prpo_path, buffersize));
248 }
249 return 0;
250 }
251
252 int
proc_kmsgbuf(void * buffer,uint32_t buffersize)253 proc_kmsgbuf(void * buffer, uint32_t buffersize)
254 {
255 int retval;
256
257 if ((retval = __proc_info(PROC_INFO_CALL_KERNMSGBUF, 0, 0, (uint64_t)0, buffer, buffersize)) == -1) {
258 return 0;
259 }
260 return retval;
261 }
262
263 int
proc_pidpath(int pid,void * buffer,uint32_t buffersize)264 proc_pidpath(int pid, void * buffer, uint32_t buffersize)
265 {
266 int retval, len;
267
268 if (buffersize < PROC_PIDPATHINFO_SIZE) {
269 errno = ENOMEM;
270 return 0;
271 }
272 if (buffersize > PROC_PIDPATHINFO_MAXSIZE) {
273 errno = EOVERFLOW;
274 return 0;
275 }
276
277 retval = __proc_info(PROC_INFO_CALL_PIDINFO, pid, PROC_PIDPATHINFO, (uint64_t)0, buffer, buffersize);
278 if (retval != -1) {
279 len = (int)strlen(buffer);
280 return len;
281 }
282 return 0;
283 }
284
285 int
proc_pidpath_audittoken(audit_token_t * audittoken,void * buffer,uint32_t buffersize)286 proc_pidpath_audittoken(audit_token_t *audittoken, void * buffer, uint32_t buffersize)
287 {
288 int retval, len;
289
290 if (buffersize < PROC_PIDPATHINFO_SIZE) {
291 errno = ENOMEM;
292 return 0;
293 }
294 if (buffersize > PROC_PIDPATHINFO_MAXSIZE) {
295 errno = EOVERFLOW;
296 return 0;
297 }
298
299 int pid = audittoken->val[5];
300 int idversion = audittoken->val[7];
301
302 retval = __proc_info_extended_id(PROC_INFO_CALL_PIDINFO, pid, PROC_PIDPATHINFO, PIF_COMPARE_IDVERSION, (uint64_t)idversion,
303 (uint64_t)0, buffer, buffersize);
304 if (retval != -1) {
305 len = (int)strlen(buffer);
306 return len;
307 }
308 return 0;
309 }
310
311 int
proc_current_thread_schedinfo(void * buffer,size_t buffersize)312 proc_current_thread_schedinfo(void *buffer, size_t buffersize)
313 {
314 extern uint64_t __thread_selfid(void);
315
316 int retval;
317
318 if (buffersize < PROC_PIDTHREADSCHEDINFO_SIZE) {
319 errno = ENOMEM;
320 return errno;
321 }
322 if (buffersize > PROC_PIDTHREADSCHEDINFO_SIZE) {
323 errno = EOVERFLOW;
324 return errno;
325 }
326
327 pid_t pid = getpid();
328 uint64_t threadid = __thread_selfid();
329
330 retval = __proc_info(PROC_INFO_CALL_PIDINFO, pid, PROC_PIDTHREADSCHEDINFO, threadid, buffer, buffersize);
331
332 if (retval == -1) {
333 return errno;
334 }
335 return 0;
336 }
337
338 int
proc_libversion(int * major,int * minor)339 proc_libversion(int *major, int * minor)
340 {
341 if (major != NULL) {
342 *major = 1;
343 }
344 if (minor != NULL) {
345 *minor = 1;
346 }
347 return 0;
348 }
349
350 int
proc_setpcontrol(const int control)351 proc_setpcontrol(const int control)
352 {
353 int retval;
354
355 if (control < PROC_SETPC_NONE || control > PROC_SETPC_TERMINATE) {
356 return EINVAL;
357 }
358
359 if ((retval = __proc_info(PROC_INFO_CALL_SETCONTROL, getpid(), PROC_SELFSET_PCONTROL, (uint64_t)control, NULL, 0)) == -1) {
360 return errno;
361 }
362
363 return 0;
364 }
365
366
367 __private_extern__ int
proc_setthreadname(void * buffer,int buffersize)368 proc_setthreadname(void * buffer, int buffersize)
369 {
370 int retval;
371
372 retval = __proc_info(PROC_INFO_CALL_SETCONTROL, getpid(), PROC_SELFSET_THREADNAME, (uint64_t)0, buffer, buffersize);
373
374 if (retval == -1) {
375 return errno;
376 } else {
377 return 0;
378 }
379 }
380
381 int
proc_track_dirty(pid_t pid,uint32_t flags)382 proc_track_dirty(pid_t pid, uint32_t flags)
383 {
384 if (__proc_info(PROC_INFO_CALL_DIRTYCONTROL, pid, PROC_DIRTYCONTROL_TRACK, flags, NULL, 0) == -1) {
385 return errno;
386 }
387
388 return 0;
389 }
390
391 int
proc_set_dirty(pid_t pid,bool dirty)392 proc_set_dirty(pid_t pid, bool dirty)
393 {
394 if (__proc_info(PROC_INFO_CALL_DIRTYCONTROL, pid, PROC_DIRTYCONTROL_SET, dirty, NULL, 0) == -1) {
395 return errno;
396 }
397
398 return 0;
399 }
400
401 int
proc_get_dirty(pid_t pid,uint32_t * flags)402 proc_get_dirty(pid_t pid, uint32_t *flags)
403 {
404 int retval;
405
406 if (!flags) {
407 return EINVAL;
408 }
409
410 retval = __proc_info(PROC_INFO_CALL_DIRTYCONTROL, pid, PROC_DIRTYCONTROL_GET, 0, NULL, 0);
411 if (retval == -1) {
412 return errno;
413 }
414
415 *flags = retval;
416
417 return 0;
418 }
419
420 int
proc_clear_dirty(pid_t pid,uint32_t flags)421 proc_clear_dirty(pid_t pid, uint32_t flags)
422 {
423 if (__proc_info(PROC_INFO_CALL_DIRTYCONTROL, pid, PROC_DIRTYCONTROL_CLEAR, flags, NULL, 0) == -1) {
424 return errno;
425 }
426
427 return 0;
428 }
429
430 int
proc_terminate(pid_t pid,int * sig)431 proc_terminate(pid_t pid, int *sig)
432 {
433 int retval;
434
435 if (!sig) {
436 return EINVAL;
437 }
438
439 retval = __proc_info(PROC_INFO_CALL_TERMINATE, pid, 0, 0, NULL, 0);
440 if (retval == -1) {
441 return errno;
442 }
443
444 *sig = retval;
445
446 return 0;
447 }
448
449 int
proc_terminate_all_rsr(int sig)450 proc_terminate_all_rsr(int sig)
451 {
452 int retval = 0;
453
454 if (sig != SIGKILL && sig != SIGTERM) {
455 return EINVAL;
456 }
457
458 retval = __proc_info(PROC_INFO_CALL_TERMINATE_RSR, 0, 0, sig, NULL, 0);
459 if (retval == -1) {
460 return errno;
461 }
462
463 return 0;
464 }
465
466 /*
467 * XXX the _fatal() variant both checks for an existing monitor
468 * (with important policy effects on first party background apps)
469 * and validates inputs.
470 */
471 int
proc_set_cpumon_params(pid_t pid,int percentage,int interval)472 proc_set_cpumon_params(pid_t pid, int percentage, int interval)
473 {
474 proc_policy_cpuusage_attr_t attr;
475
476 /* no argument validation ...
477 * task_set_cpuusage() ignores 0 values and squashes negative
478 * values into uint32_t.
479 */
480
481 attr.ppattr_cpu_attr = PROC_POLICY_RSRCACT_NOTIFY_EXC;
482 attr.ppattr_cpu_percentage = percentage;
483 attr.ppattr_cpu_attr_interval = (uint64_t)interval;
484 attr.ppattr_cpu_attr_deadline = 0;
485
486 return __process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_SET, PROC_POLICY_RESOURCE_USAGE,
487 PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, 0);
488 }
489
490 int
proc_get_cpumon_params(pid_t pid,int * percentage,int * interval)491 proc_get_cpumon_params(pid_t pid, int *percentage, int *interval)
492 {
493 proc_policy_cpuusage_attr_t attr;
494 int ret;
495
496 ret = __process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_GET, PROC_POLICY_RESOURCE_USAGE,
497 PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, 0);
498
499 if ((ret == 0) && (attr.ppattr_cpu_attr == PROC_POLICY_RSRCACT_NOTIFY_EXC)) {
500 *percentage = attr.ppattr_cpu_percentage;
501 *interval = (int)attr.ppattr_cpu_attr_interval;
502 } else {
503 *percentage = 0;
504 *interval = 0;
505 }
506
507 return ret;
508 }
509
510 int
proc_set_cpumon_defaults(pid_t pid)511 proc_set_cpumon_defaults(pid_t pid)
512 {
513 proc_policy_cpuusage_attr_t attr;
514
515 attr.ppattr_cpu_attr = PROC_POLICY_RSRCACT_NOTIFY_EXC;
516 attr.ppattr_cpu_percentage = PROC_POLICY_CPUMON_DEFAULTS;
517 attr.ppattr_cpu_attr_interval = 0;
518 attr.ppattr_cpu_attr_deadline = 0;
519
520 return __process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_SET, PROC_POLICY_RESOURCE_USAGE,
521 PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, 0);
522 }
523
524 int
proc_resume_cpumon(pid_t pid)525 proc_resume_cpumon(pid_t pid)
526 {
527 return __process_policy(PROC_POLICY_SCOPE_PROCESS,
528 PROC_POLICY_ACTION_ENABLE,
529 PROC_POLICY_RESOURCE_USAGE,
530 PROC_POLICY_RUSAGE_CPU,
531 NULL, pid, 0);
532 }
533
534 int
proc_disable_cpumon(pid_t pid)535 proc_disable_cpumon(pid_t pid)
536 {
537 proc_policy_cpuusage_attr_t attr;
538
539 attr.ppattr_cpu_attr = PROC_POLICY_RSRCACT_NOTIFY_EXC;
540 attr.ppattr_cpu_percentage = PROC_POLICY_CPUMON_DISABLE;
541 attr.ppattr_cpu_attr_interval = 0;
542 attr.ppattr_cpu_attr_deadline = 0;
543
544 return __process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_SET, PROC_POLICY_RESOURCE_USAGE,
545 PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, 0);
546 }
547
548
549 /*
550 * Turn on the CPU usage monitor using the supplied parameters, and make
551 * violations of the monitor fatal.
552 *
553 * Returns: 0 on success;
554 * -1 on failure and sets errno
555 */
556 int
proc_set_cpumon_params_fatal(pid_t pid,int percentage,int interval)557 proc_set_cpumon_params_fatal(pid_t pid, int percentage, int interval)
558 {
559 int current_percentage = 0;
560 int current_interval = 0; /* intervals are in seconds */
561 int ret = 0;
562
563 if ((percentage <= 0) || (interval <= 0)) {
564 errno = EINVAL;
565 return -1;
566 }
567
568 /*
569 * Do a simple query to see if CPU monitoring is
570 * already active. If either the percentage or the
571 * interval is nonzero, then CPU monitoring is
572 * already in use for this process.
573 *
574 * XXX: need set...() and set..fatal() to behave similarly.
575 * Currently, this check prevents 1st party apps (which get a
576 * default non-fatal monitor) not to get a fatal monitor.
577 */
578 (void)proc_get_cpumon_params(pid, ¤t_percentage, ¤t_interval);
579 if (current_percentage || current_interval) {
580 /*
581 * The CPU monitor appears to be active.
582 * We choose not to disturb those settings.
583 */
584 errno = EBUSY;
585 return -1;
586 }
587
588 if ((ret = proc_set_cpumon_params(pid, percentage, interval)) != 0) {
589 /* Failed to activate the CPU monitor */
590 return ret;
591 }
592
593 if ((ret = proc_rlimit_control(pid, RLIMIT_CPU_USAGE_MONITOR, (void *)(uintptr_t)CPUMON_MAKE_FATAL)) != 0) {
594 /* Failed to set termination, back out the CPU monitor settings. */
595 (void)proc_disable_cpumon(pid);
596 }
597
598 return ret;
599 }
600
601 int
proc_set_wakemon_params(pid_t pid,int rate_hz,int flags __unused)602 proc_set_wakemon_params(pid_t pid, int rate_hz, int flags __unused)
603 {
604 struct proc_rlimit_control_wakeupmon params;
605
606 params.wm_flags = WAKEMON_ENABLE;
607 params.wm_rate = rate_hz;
608
609 return proc_rlimit_control(pid, RLIMIT_WAKEUPS_MONITOR, ¶ms);
610 }
611
612 #ifndef WAKEMON_GET_PARAMS
613 #define WAKEMON_GET_PARAMS 0x4
614 #define WAKEMON_SET_DEFAULTS 0x8
615 #endif
616
617 int
proc_get_wakemon_params(pid_t pid,int * rate_hz,int * flags)618 proc_get_wakemon_params(pid_t pid, int *rate_hz, int *flags)
619 {
620 struct proc_rlimit_control_wakeupmon params;
621 int error;
622
623 params.wm_flags = WAKEMON_GET_PARAMS;
624
625 if ((error = proc_rlimit_control(pid, RLIMIT_WAKEUPS_MONITOR, ¶ms)) != 0) {
626 return error;
627 }
628
629 *rate_hz = params.wm_rate;
630 *flags = params.wm_flags;
631
632 return 0;
633 }
634
635 int
proc_set_wakemon_defaults(pid_t pid)636 proc_set_wakemon_defaults(pid_t pid)
637 {
638 struct proc_rlimit_control_wakeupmon params;
639
640 params.wm_flags = WAKEMON_ENABLE | WAKEMON_SET_DEFAULTS;
641 params.wm_rate = -1;
642
643 return proc_rlimit_control(pid, RLIMIT_WAKEUPS_MONITOR, ¶ms);
644 }
645
646 int
proc_disable_wakemon(pid_t pid)647 proc_disable_wakemon(pid_t pid)
648 {
649 struct proc_rlimit_control_wakeupmon params;
650
651 params.wm_flags = WAKEMON_DISABLE;
652 params.wm_rate = -1;
653
654 return proc_rlimit_control(pid, RLIMIT_WAKEUPS_MONITOR, ¶ms);
655 }
656
657 int
proc_list_uptrs(int pid,uint64_t * buf,uint32_t bufsz)658 proc_list_uptrs(int pid, uint64_t *buf, uint32_t bufsz)
659 {
660 return __proc_info(PROC_INFO_CALL_PIDINFO, pid, PROC_PIDLISTUPTRS, 0,
661 buf, bufsz);
662 }
663
664 int
proc_list_dynkqueueids(int pid,kqueue_id_t * buf,uint32_t bufsz)665 proc_list_dynkqueueids(int pid, kqueue_id_t *buf, uint32_t bufsz)
666 {
667 return __proc_info(PROC_INFO_CALL_PIDINFO, pid, PROC_PIDLISTDYNKQUEUES, 0,
668 buf, bufsz);
669 }
670
671
672 int
proc_setcpu_percentage(pid_t pid,int action,int percentage)673 proc_setcpu_percentage(pid_t pid, int action, int percentage)
674 {
675 proc_policy_cpuusage_attr_t attr;
676
677 bzero(&attr, sizeof(proc_policy_cpuusage_attr_t));
678 attr.ppattr_cpu_attr = action;
679 attr.ppattr_cpu_percentage = percentage;
680 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_RESOURCE_USAGE, PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, (uint64_t)0) != -1) {
681 return 0;
682 } else {
683 return errno;
684 }
685 }
686
687 int
proc_reset_footprint_interval(pid_t pid)688 proc_reset_footprint_interval(pid_t pid)
689 {
690 return proc_rlimit_control(pid, RLIMIT_FOOTPRINT_INTERVAL, (void *)(uintptr_t)FOOTPRINT_INTERVAL_RESET);
691 }
692
693 int
proc_clear_cpulimits(pid_t pid)694 proc_clear_cpulimits(pid_t pid)
695 {
696 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_RESTORE, PROC_POLICY_RESOURCE_USAGE, PROC_POLICY_RUSAGE_CPU, NULL, pid, (uint64_t)0) != -1) {
697 return 0;
698 } else {
699 return errno;
700 }
701 }
702
703 #if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
704
705 int
proc_setcpu_deadline(pid_t pid,int action,uint64_t deadline)706 proc_setcpu_deadline(pid_t pid, int action, uint64_t deadline)
707 {
708 proc_policy_cpuusage_attr_t attr;
709
710 bzero(&attr, sizeof(proc_policy_cpuusage_attr_t));
711 attr.ppattr_cpu_attr = action;
712 attr.ppattr_cpu_attr_deadline = deadline;
713 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_RESOURCE_USAGE, PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, (uint64_t)0) != -1) {
714 return 0;
715 } else {
716 return errno;
717 }
718 }
719
720 int
proc_setcpu_percentage_withdeadline(pid_t pid,int action,int percentage,uint64_t deadline)721 proc_setcpu_percentage_withdeadline(pid_t pid, int action, int percentage, uint64_t deadline)
722 {
723 proc_policy_cpuusage_attr_t attr;
724
725 bzero(&attr, sizeof(proc_policy_cpuusage_attr_t));
726 attr.ppattr_cpu_attr = action;
727 attr.ppattr_cpu_percentage = percentage;
728 attr.ppattr_cpu_attr_deadline = deadline;
729 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_RESOURCE_USAGE, PROC_POLICY_RUSAGE_CPU, (proc_policy_attribute_t*)&attr, pid, (uint64_t)0) != -1) {
730 return 0;
731 } else {
732 return errno;
733 }
734 }
735
736 int
proc_appstate(int pid,int * appstatep)737 proc_appstate(int pid, int * appstatep)
738 {
739 int state;
740
741 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_GET, PROC_POLICY_APP_LIFECYCLE, PROC_POLICY_APPLIFE_STATE, (proc_policy_attribute_t*)&state, pid, (uint64_t)0) != -1) {
742 if (appstatep != NULL) {
743 *appstatep = state;
744 }
745 return 0;
746 } else {
747 return errno;
748 }
749 }
750
751 int
proc_setappstate(int pid,int appstate)752 proc_setappstate(int pid, int appstate)
753 {
754 int state = appstate;
755
756 switch (state) {
757 case PROC_APPSTATE_NONE:
758 case PROC_APPSTATE_ACTIVE:
759 case PROC_APPSTATE_INACTIVE:
760 case PROC_APPSTATE_BACKGROUND:
761 case PROC_APPSTATE_NONUI:
762 break;
763 default:
764 return EINVAL;
765 }
766 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_APP_LIFECYCLE, PROC_POLICY_APPLIFE_STATE, (proc_policy_attribute_t*)&state, pid, (uint64_t)0) != -1) {
767 return 0;
768 } else {
769 return errno;
770 }
771 }
772
773 int
proc_devstatusnotify(int devicestatus)774 proc_devstatusnotify(int devicestatus)
775 {
776 int state = devicestatus;
777
778 switch (devicestatus) {
779 case PROC_DEVSTATUS_SHORTTERM:
780 case PROC_DEVSTATUS_LONGTERM:
781 break;
782 default:
783 return EINVAL;
784 }
785
786 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_APP_LIFECYCLE, PROC_POLICY_APPLIFE_DEVSTATUS, (proc_policy_attribute_t*)&state, getpid(), (uint64_t)0) != -1) {
787 return 0;
788 } else {
789 return errno;
790 }
791 }
792
793 int
proc_pidbind(int pid,uint64_t threadid,int bind)794 proc_pidbind(int pid, uint64_t threadid, int bind)
795 {
796 int state = bind;
797 pid_t passpid = pid;
798
799 switch (bind) {
800 case PROC_PIDBIND_CLEAR:
801 passpid = getpid(); /* ignore pid on clear */
802 break;
803 case PROC_PIDBIND_SET:
804 break;
805 default:
806 return EINVAL;
807 }
808 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_APP_LIFECYCLE, PROC_POLICY_APPLIFE_PIDBIND, (proc_policy_attribute_t*)&state, passpid, threadid) != -1) {
809 return 0;
810 } else {
811 return errno;
812 }
813 }
814
815 int
proc_can_use_foreground_hw(int pid,uint32_t * reason)816 proc_can_use_foreground_hw(int pid, uint32_t *reason)
817 {
818 return __proc_info(PROC_INFO_CALL_CANUSEFGHW, pid, 0, 0, reason, sizeof(*reason));
819 }
820 #endif /* (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) */
821
822
823 /* Donate importance to adaptive processes from this process */
824 int
proc_donate_importance_boost(void)825 proc_donate_importance_boost(void)
826 {
827 int rval;
828
829 #if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
830 rval = __process_policy(PROC_POLICY_SCOPE_PROCESS,
831 PROC_POLICY_ACTION_ENABLE,
832 PROC_POLICY_APPTYPE,
833 PROC_POLICY_IOS_DONATEIMP,
834 NULL, getpid(), (uint64_t)0);
835 #else /* (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) */
836 rval = __process_policy(PROC_POLICY_SCOPE_PROCESS,
837 PROC_POLICY_ACTION_SET,
838 PROC_POLICY_BOOST,
839 PROC_POLICY_IMP_DONATION,
840 NULL, getpid(), 0);
841 #endif /* (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) */
842
843 if (rval == 0) {
844 return 0;
845 } else {
846 return errno;
847 }
848 }
849
850 static __attribute__((noinline)) void
proc_importance_bad_assertion(char * reason)851 proc_importance_bad_assertion(char *reason)
852 {
853 (void)reason;
854 }
855
856 /*
857 * Use the address of these variables as the token. This way, they can be
858 * printed in the debugger as useful names.
859 */
860 uint64_t important_boost_assertion_token = 0xfafafafafafafafa;
861 uint64_t normal_boost_assertion_token = 0xfbfbfbfbfbfbfbfb;
862 uint64_t non_boost_assertion_token = 0xfcfcfcfcfcfcfcfc;
863 uint64_t denap_boost_assertion_token = 0xfdfdfdfdfdfdfdfd;
864
865 /*
866 * Accept the boost on a message, or request another boost assertion
867 * if we have already accepted the implicit boost for this message.
868 *
869 * Returns EOVERFLOW if an attempt is made to take an extra assertion when not boosted.
870 *
871 * Returns EIO if the message was not a boosting message.
872 * TODO: Return a 'non-boost' token instead.
873 */
874 int
proc_importance_assertion_begin_with_msg(mach_msg_header_t * msg,__unused mach_msg_trailer_t * trailer,uint64_t * assertion_token)875 proc_importance_assertion_begin_with_msg(mach_msg_header_t *msg,
876 __unused mach_msg_trailer_t *trailer,
877 uint64_t *assertion_token)
878 {
879 int rval = 0;
880
881 if (assertion_token == NULL) {
882 return EINVAL;
883 }
884
885 #define LEGACYBOOSTMASK (MACH_MSGH_BITS_VOUCHER_MASK | MACH_MSGH_BITS_RAISEIMP)
886 #define LEGACYBOOSTED(m) (((m)->msgh_bits & LEGACYBOOSTMASK) == MACH_MSGH_BITS_RAISEIMP)
887
888 /* Is this a legacy boosted message? */
889 if (LEGACYBOOSTED(msg)) {
890 /*
891 * Have we accepted the implicit boost for this message yet?
892 * If we haven't accepted it yet, no need to call into kernel.
893 */
894 if ((msg->msgh_bits & MACH_MSGH_BITS_IMPHOLDASRT) == 0) {
895 msg->msgh_bits |= MACH_MSGH_BITS_IMPHOLDASRT;
896 *assertion_token = (uint64_t) &important_boost_assertion_token;
897 return 0;
898 }
899
900 /* Request an additional boost count */
901 rval = __process_policy(PROC_POLICY_SCOPE_PROCESS,
902 PROC_POLICY_ACTION_HOLD,
903 PROC_POLICY_BOOST,
904 PROC_POLICY_IMP_IMPORTANT,
905 NULL, getpid(), 0);
906 if (rval == 0) {
907 *assertion_token = (uint64_t) &important_boost_assertion_token;
908 return 0;
909 } else if (errno == EOVERFLOW) {
910 proc_importance_bad_assertion("Attempted to take assertion while not boosted");
911 return errno;
912 } else {
913 return errno;
914 }
915 }
916
917 return EIO;
918 }
919
920
921 /*
922 * Drop a boost assertion.
923 * Returns EOVERFLOW on boost assertion underflow.
924 */
925 int
proc_importance_assertion_complete(uint64_t assertion_token)926 proc_importance_assertion_complete(uint64_t assertion_token)
927 {
928 int rval = 0;
929
930 if (assertion_token == 0) {
931 return 0;
932 }
933
934 if (assertion_token == (uint64_t) &important_boost_assertion_token) {
935 rval = __process_policy(PROC_POLICY_SCOPE_PROCESS,
936 PROC_POLICY_ACTION_DROP,
937 PROC_POLICY_BOOST,
938 PROC_POLICY_IMP_IMPORTANT,
939 NULL, getpid(), 0);
940 if (rval == 0) {
941 return 0;
942 } else if (errno == EOVERFLOW) {
943 proc_importance_bad_assertion("Attempted to drop too many assertions");
944 return errno;
945 } else {
946 return errno;
947 }
948 } else {
949 proc_importance_bad_assertion("Attempted to drop assertion with invalid token");
950 return EIO;
951 }
952 }
953
954 /*
955 * Accept the De-Nap boost on a message, or request another boost assertion
956 * if we have already accepted the implicit boost for this message.
957 *
958 * Interface is deprecated before it really got started - just as synonym
959 * for proc_importance_assertion_begin_with_msg() now.
960 */
961 int
proc_denap_assertion_begin_with_msg(mach_msg_header_t * msg,uint64_t * assertion_token)962 proc_denap_assertion_begin_with_msg(mach_msg_header_t *msg,
963 uint64_t *assertion_token)
964 {
965 #pragma clang diagnostic push
966 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
967 return proc_importance_assertion_begin_with_msg(msg, NULL, assertion_token);
968 #pragma clang diagnostic pop
969 }
970
971
972 /*
973 * Drop a denap boost assertion.
974 *
975 * Interface is deprecated before it really got started - just a synonym
976 * for proc_importance_assertion_complete() now.
977 */
978 int
proc_denap_assertion_complete(uint64_t assertion_token)979 proc_denap_assertion_complete(uint64_t assertion_token)
980 {
981 return proc_importance_assertion_complete(assertion_token);
982 }
983
984 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
985
986 int
proc_clear_vmpressure(pid_t pid)987 proc_clear_vmpressure(pid_t pid)
988 {
989 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_RESTORE, PROC_POLICY_RESOURCE_STARVATION, PROC_POLICY_RS_VIRTUALMEM, NULL, pid, (uint64_t)0) != -1) {
990 return 0;
991 } else {
992 return errno;
993 }
994 }
995
996 /* set the current process as one who can resume suspended processes due to low virtual memory. Need to be root */
997 int
proc_set_owner_vmpressure(void)998 proc_set_owner_vmpressure(void)
999 {
1000 int retval;
1001
1002 if ((retval = __proc_info(PROC_INFO_CALL_SETCONTROL, getpid(), PROC_SELFSET_VMRSRCOWNER, (uint64_t)0, NULL, 0)) == -1) {
1003 return errno;
1004 }
1005
1006 return 0;
1007 }
1008
1009 /* mark yourself to delay idle sleep on disk IO */
1010 int
proc_set_delayidlesleep(void)1011 proc_set_delayidlesleep(void)
1012 {
1013 int retval;
1014
1015 if ((retval = __proc_info(PROC_INFO_CALL_SETCONTROL, getpid(), PROC_SELFSET_DELAYIDLESLEEP, (uint64_t)1, NULL, 0)) == -1) {
1016 return errno;
1017 }
1018
1019 return 0;
1020 }
1021
1022 /* Reset yourself to delay idle sleep on disk IO, if already set */
1023 int
proc_clear_delayidlesleep(void)1024 proc_clear_delayidlesleep(void)
1025 {
1026 int retval;
1027
1028 if ((retval = __proc_info(PROC_INFO_CALL_SETCONTROL, getpid(), PROC_SELFSET_DELAYIDLESLEEP, (uint64_t)0, NULL, 0)) == -1) {
1029 return errno;
1030 }
1031
1032 return 0;
1033 }
1034
1035 /* disable the launch time backgroudn policy and restore the process to default group */
1036 int
proc_disable_apptype(pid_t pid,int apptype)1037 proc_disable_apptype(pid_t pid, int apptype)
1038 {
1039 switch (apptype) {
1040 case PROC_POLICY_OSX_APPTYPE_TAL:
1041 case PROC_POLICY_OSX_APPTYPE_DASHCLIENT:
1042 break;
1043 default:
1044 return EINVAL;
1045 }
1046
1047 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_DISABLE, PROC_POLICY_APPTYPE, apptype, NULL, pid, (uint64_t)0) != -1) {
1048 return 0;
1049 } else {
1050 return errno;
1051 }
1052 }
1053
1054 /* re-enable the launch time background policy if it had been disabled. */
1055 int
proc_enable_apptype(pid_t pid,int apptype)1056 proc_enable_apptype(pid_t pid, int apptype)
1057 {
1058 switch (apptype) {
1059 case PROC_POLICY_OSX_APPTYPE_TAL:
1060 case PROC_POLICY_OSX_APPTYPE_DASHCLIENT:
1061 break;
1062 default:
1063 return EINVAL;
1064 }
1065
1066 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_ENABLE, PROC_POLICY_APPTYPE, apptype, NULL, pid, (uint64_t)0) != -1) {
1067 return 0;
1068 } else {
1069 return errno;
1070 }
1071 }
1072
1073 #if !TARGET_OS_SIMULATOR
1074
1075 int
proc_suppress(__unused pid_t pid,__unused uint64_t * generation)1076 proc_suppress(__unused pid_t pid, __unused uint64_t *generation)
1077 {
1078 return 0;
1079 }
1080
1081 #endif /* !TARGET_OS_SIMULATOR */
1082
1083 #endif /* !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) */
1084
1085 int
proc_set_no_smt(void)1086 proc_set_no_smt(void)
1087 {
1088 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_NO_SMT, 0, NULL, getpid(), (uint64_t)0) == -1) {
1089 return errno;
1090 }
1091 return 0;
1092 }
1093
1094 int
proc_setthread_no_smt(void)1095 proc_setthread_no_smt(void)
1096 {
1097 extern uint64_t __thread_selfid(void);
1098 if (__process_policy(PROC_POLICY_SCOPE_THREAD, PROC_POLICY_ACTION_APPLY, PROC_POLICY_NO_SMT, 0, NULL, 0, __thread_selfid()) == -1) {
1099 return errno;
1100 }
1101 return 0;
1102 }
1103
1104 int
proc_set_csm(uint32_t flags)1105 proc_set_csm(uint32_t flags)
1106 {
1107 const uint32_t mask = PROC_CSM_ALL | PROC_CSM_TECS | PROC_CSM_NOSMT;
1108 if ((flags & ~mask) != 0) {
1109 return EINVAL;
1110 }
1111
1112 if (flags & (PROC_CSM_NOSMT | PROC_CSM_ALL)) {
1113 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_NO_SMT, 0, NULL, getpid(), (uint64_t)0) == -1) {
1114 return errno;
1115 }
1116 }
1117
1118 if (flags & (PROC_CSM_TECS | PROC_CSM_ALL)) {
1119 if (__process_policy(PROC_POLICY_SCOPE_PROCESS, PROC_POLICY_ACTION_APPLY, PROC_POLICY_TECS, 0, NULL, getpid(), (uint64_t)0) == -1) {
1120 return errno;
1121 }
1122 }
1123
1124 return 0;
1125 }
1126
1127 int
proc_setthread_csm(uint32_t flags)1128 proc_setthread_csm(uint32_t flags)
1129 {
1130 extern uint64_t __thread_selfid(void);
1131 const uint32_t mask = PROC_CSM_ALL | PROC_CSM_TECS | PROC_CSM_NOSMT;
1132 if ((flags & ~mask) != 0) {
1133 return EINVAL;
1134 }
1135
1136 if (flags & (PROC_CSM_NOSMT | PROC_CSM_ALL)) {
1137 if (__process_policy(PROC_POLICY_SCOPE_THREAD, PROC_POLICY_ACTION_APPLY, PROC_POLICY_NO_SMT, 0, NULL, 0, __thread_selfid()) == -1) {
1138 return errno;
1139 }
1140 }
1141
1142 if (flags & (PROC_CSM_TECS | PROC_CSM_ALL)) {
1143 if (__process_policy(PROC_POLICY_SCOPE_THREAD, PROC_POLICY_ACTION_APPLY, PROC_POLICY_TECS, 0, NULL, 0, __thread_selfid()) == -1) {
1144 return errno;
1145 }
1146 }
1147
1148 return 0;
1149 }
1150