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[apple/xnu.git] / bsd / kern / kern_sysctl.c
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 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29 /*-
30 * Copyright (c) 1982, 1986, 1989, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * This code is derived from software contributed to Berkeley by
34 * Mike Karels at Berkeley Software Design, Inc.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
65 */
66 /*
67 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
68 * support for mandatory and extensible security protections. This notice
69 * is included in support of clause 2.2 (b) of the Apple Public License,
70 * Version 2.0.
71 */
72
73 /*
74 * DEPRECATED sysctl system call code
75 *
76 * Everything in this file is deprecated. Sysctls should be handled
77 * by the code in kern_newsysctl.c.
78 * The remaining "case" sections are supposed to be converted into
79 * SYSCTL_*-style definitions, and as soon as all of them are gone,
80 * this source file is supposed to die.
81 *
82 * DO NOT ADD ANY MORE "case" SECTIONS TO THIS FILE, instead define
83 * your sysctl with SYSCTL_INT, SYSCTL_PROC etc. in your source file.
84 */
85
86 #include <sys/param.h>
87 #include <sys/systm.h>
88 #include <sys/kernel.h>
89 #include <sys/malloc.h>
90 #include <sys/proc_internal.h>
91 #include <sys/kauth.h>
92 #include <sys/file_internal.h>
93 #include <sys/vnode_internal.h>
94 #include <sys/unistd.h>
95 #include <sys/buf.h>
96 #include <sys/ioctl.h>
97 #include <sys/namei.h>
98 #include <sys/tty.h>
99 #include <sys/disklabel.h>
100 #include <sys/vm.h>
101 #include <sys/sysctl.h>
102 #include <sys/user.h>
103 #include <sys/aio_kern.h>
104 #include <sys/reboot.h>
105 #include <sys/memory_maintenance.h>
106 #include <sys/priv.h>
107 #include <stdatomic.h>
108
109 #include <security/audit/audit.h>
110 #include <kern/kalloc.h>
111
112 #include <machine/smp.h>
113 #include <machine/atomic.h>
114 #include <mach/machine.h>
115 #include <mach/mach_host.h>
116 #include <mach/mach_types.h>
117 #include <mach/processor_info.h>
118 #include <mach/vm_param.h>
119 #include <kern/debug.h>
120 #include <kern/mach_param.h>
121 #include <kern/task.h>
122 #include <kern/thread.h>
123 #include <kern/thread_group.h>
124 #include <kern/processor.h>
125 #include <kern/cpu_number.h>
126 #include <kern/cpu_quiesce.h>
127 #include <kern/sched_prim.h>
128 #include <vm/vm_kern.h>
129 #include <vm/vm_map.h>
130 #include <mach/host_info.h>
131
132 #include <sys/mount_internal.h>
133 #include <sys/kdebug.h>
134 #include <sys/kern_sysctl.h>
135
136 #include <IOKit/IOPlatformExpert.h>
137 #include <pexpert/pexpert.h>
138
139 #include <machine/machine_routines.h>
140 #include <machine/exec.h>
141
142 #include <vm/vm_protos.h>
143 #include <vm/vm_pageout.h>
144 #include <vm/vm_compressor_algorithms.h>
145 #include <sys/imgsrc.h>
146 #include <kern/timer_call.h>
147
148 #if defined(__i386__) || defined(__x86_64__)
149 #include <i386/cpuid.h>
150 #endif
151
152 #if CONFIG_FREEZE
153 #include <sys/kern_memorystatus.h>
154 #endif
155
156 #if KPERF
157 #include <kperf/kperf.h>
158 #endif
159
160 #if HYPERVISOR
161 #include <kern/hv_support.h>
162 #endif
163
164 /*
165 * deliberately setting max requests to really high number
166 * so that runaway settings do not cause MALLOC overflows
167 */
168 #define AIO_MAX_REQUESTS (128 * CONFIG_AIO_MAX)
169
170 extern int aio_max_requests;
171 extern int aio_max_requests_per_process;
172 extern int aio_worker_threads;
173 extern int lowpri_IO_window_msecs;
174 extern int lowpri_IO_delay_msecs;
175 #if DEVELOPMENT || DEBUG
176 extern int nx_enabled;
177 #endif
178 extern int speculative_reads_disabled;
179 extern unsigned int speculative_prefetch_max;
180 extern unsigned int speculative_prefetch_max_iosize;
181 extern unsigned int preheat_max_bytes;
182 extern unsigned int preheat_min_bytes;
183 extern long numvnodes;
184 extern long num_recycledvnodes;
185
186 extern uuid_string_t bootsessionuuid_string;
187
188 extern unsigned int vm_max_delayed_work_limit;
189 extern unsigned int vm_max_batch;
190
191 extern unsigned int vm_page_free_min;
192 extern unsigned int vm_page_free_target;
193 extern unsigned int vm_page_free_reserved;
194
195 #if (DEVELOPMENT || DEBUG)
196 extern uint32_t vm_page_creation_throttled_hard;
197 extern uint32_t vm_page_creation_throttled_soft;
198 #endif /* DEVELOPMENT || DEBUG */
199
200 #if CONFIG_LOCKERBOOT
201 extern const char kernel_protoboot_mount[];
202 #endif
203
204 /*
205 * Conditionally allow dtrace to see these functions for debugging purposes.
206 */
207 #ifdef STATIC
208 #undef STATIC
209 #endif
210 #if 0
211 #define STATIC
212 #else
213 #define STATIC static
214 #endif
215
216 extern boolean_t mach_timer_coalescing_enabled;
217
218 extern uint64_t timer_deadline_tracking_bin_1, timer_deadline_tracking_bin_2;
219
220 STATIC void
221 fill_user32_eproc(proc_t, struct user32_eproc *__restrict);
222 STATIC void
223 fill_user32_externproc(proc_t, struct user32_extern_proc *__restrict);
224 STATIC void
225 fill_user64_eproc(proc_t, struct user64_eproc *__restrict);
226 STATIC void
227 fill_user64_proc(proc_t, struct user64_kinfo_proc *__restrict);
228 STATIC void
229 fill_user64_externproc(proc_t, struct user64_extern_proc *__restrict);
230 STATIC void
231 fill_user32_proc(proc_t, struct user32_kinfo_proc *__restrict);
232
233 extern int
234 kdbg_control(int *name, u_int namelen, user_addr_t where, size_t * sizep);
235 #if NFSCLIENT
236 extern int
237 netboot_root(void);
238 #endif
239 int
240 sysctl_procargs(int *name, u_int namelen, user_addr_t where,
241 size_t *sizep, proc_t cur_proc);
242 STATIC int
243 sysctl_procargsx(int *name, u_int namelen, user_addr_t where, size_t *sizep,
244 proc_t cur_proc, int argc_yes);
245 int
246 sysctl_struct(user_addr_t oldp, size_t *oldlenp, user_addr_t newp,
247 size_t newlen, void *sp, int len);
248
249 STATIC int sysdoproc_filt_KERN_PROC_PID(proc_t p, void * arg);
250 STATIC int sysdoproc_filt_KERN_PROC_PGRP(proc_t p, void * arg);
251 STATIC int sysdoproc_filt_KERN_PROC_TTY(proc_t p, void * arg);
252 STATIC int sysdoproc_filt_KERN_PROC_UID(proc_t p, void * arg);
253 STATIC int sysdoproc_filt_KERN_PROC_RUID(proc_t p, void * arg);
254 int sysdoproc_callback(proc_t p, void *arg);
255
256
257 /* forward declarations for non-static STATIC */
258 STATIC void fill_loadavg64(struct loadavg *la, struct user64_loadavg *la64);
259 STATIC void fill_loadavg32(struct loadavg *la, struct user32_loadavg *la32);
260 STATIC int sysctl_handle_kern_threadname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
261 STATIC int sysctl_sched_stats(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
262 STATIC int sysctl_sched_stats_enable(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
263 STATIC int sysctl_kdebug_ops SYSCTL_HANDLER_ARGS;
264 #if COUNT_SYSCALLS
265 STATIC int sysctl_docountsyscalls SYSCTL_HANDLER_ARGS;
266 #endif /* COUNT_SYSCALLS */
267 #if !CONFIG_EMBEDDED
268 STATIC int sysctl_doprocargs SYSCTL_HANDLER_ARGS;
269 #endif /* !CONFIG_EMBEDDED */
270 STATIC int sysctl_doprocargs2 SYSCTL_HANDLER_ARGS;
271 STATIC int sysctl_prochandle SYSCTL_HANDLER_ARGS;
272 STATIC int sysctl_aiomax(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
273 STATIC int sysctl_aioprocmax(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
274 STATIC int sysctl_aiothreads(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
275 STATIC int sysctl_maxproc(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
276 STATIC int sysctl_osversion(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
277 STATIC int sysctl_sysctl_bootargs(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
278 STATIC int sysctl_maxvnodes(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
279 STATIC int sysctl_securelvl(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
280 STATIC int sysctl_domainname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
281 STATIC int sysctl_hostname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
282 STATIC int sysctl_procname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
283 STATIC int sysctl_boottime(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
284 STATIC int sysctl_symfile(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
285 #if NFSCLIENT
286 STATIC int sysctl_netboot(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
287 #endif
288 #ifdef CONFIG_IMGSRC_ACCESS
289 STATIC int sysctl_imgsrcdev(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
290 #endif
291 STATIC int sysctl_usrstack(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
292 STATIC int sysctl_usrstack64(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
293 #if CONFIG_COREDUMP
294 STATIC int sysctl_coredump(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
295 STATIC int sysctl_suid_coredump(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
296 #endif
297 STATIC int sysctl_delayterm(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
298 STATIC int sysctl_rage_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
299 STATIC int sysctl_kern_check_openevt(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
300 #if DEVELOPMENT || DEBUG
301 STATIC int sysctl_nx(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
302 #endif
303 STATIC int sysctl_loadavg(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
304 STATIC int sysctl_vm_toggle_address_reuse(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
305 STATIC int sysctl_swapusage(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
306 STATIC int fetch_process_cputype( proc_t cur_proc, int *name, u_int namelen, cpu_type_t *cputype);
307 STATIC int sysctl_sysctl_native(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
308 STATIC int sysctl_sysctl_cputype(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
309 STATIC int sysctl_safeboot(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
310 STATIC int sysctl_singleuser(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
311 STATIC int sysctl_minimalboot(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
312 STATIC int sysctl_slide(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
313
314 #ifdef CONFIG_XNUPOST
315 #include <tests/xnupost.h>
316
317 STATIC int sysctl_debug_test_oslog_ctl(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
318 STATIC int sysctl_debug_test_stackshot_mutex_owner(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
319 STATIC int sysctl_debug_test_stackshot_rwlck_owner(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
320 #endif
321
322 extern void IORegistrySetOSBuildVersion(char * build_version);
323
324 STATIC void
325 fill_loadavg64(struct loadavg *la, struct user64_loadavg *la64)
326 {
327 la64->ldavg[0] = la->ldavg[0];
328 la64->ldavg[1] = la->ldavg[1];
329 la64->ldavg[2] = la->ldavg[2];
330 la64->fscale = (user64_long_t)la->fscale;
331 }
332
333 STATIC void
334 fill_loadavg32(struct loadavg *la, struct user32_loadavg *la32)
335 {
336 la32->ldavg[0] = la->ldavg[0];
337 la32->ldavg[1] = la->ldavg[1];
338 la32->ldavg[2] = la->ldavg[2];
339 la32->fscale = (user32_long_t)la->fscale;
340 }
341
342 #if CONFIG_COREDUMP
343 /*
344 * Attributes stored in the kernel.
345 */
346 extern char corefilename[MAXPATHLEN + 1];
347 extern int do_coredump;
348 extern int sugid_coredump;
349 #endif
350
351 #if COUNT_SYSCALLS
352 extern int do_count_syscalls;
353 #endif
354
355 #ifdef INSECURE
356 int securelevel = -1;
357 #else
358 int securelevel;
359 #endif
360
361 STATIC int
362 sysctl_handle_kern_threadname( __unused struct sysctl_oid *oidp, __unused void *arg1,
363 __unused int arg2, struct sysctl_req *req)
364 {
365 int error;
366 struct uthread *ut = get_bsdthread_info(current_thread());
367 user_addr_t oldp = 0, newp = 0;
368 size_t *oldlenp = NULL;
369 size_t newlen = 0;
370
371 oldp = req->oldptr;
372 oldlenp = &(req->oldlen);
373 newp = req->newptr;
374 newlen = req->newlen;
375
376 /* We want the current length, and maybe the string itself */
377 if (oldlenp) {
378 /* if we have no thread name yet tell'em we want MAXTHREADNAMESIZE - 1 */
379 size_t currlen = MAXTHREADNAMESIZE - 1;
380
381 if (ut->pth_name) {
382 /* use length of current thread name */
383 currlen = strlen(ut->pth_name);
384 }
385 if (oldp) {
386 if (*oldlenp < currlen) {
387 return ENOMEM;
388 }
389 /* NOTE - we do not copy the NULL terminator */
390 if (ut->pth_name) {
391 error = copyout(ut->pth_name, oldp, currlen);
392 if (error) {
393 return error;
394 }
395 }
396 }
397 /* return length of thread name minus NULL terminator (just like strlen) */
398 req->oldidx = currlen;
399 }
400
401 /* We want to set the name to something */
402 if (newp) {
403 if (newlen > (MAXTHREADNAMESIZE - 1)) {
404 return ENAMETOOLONG;
405 }
406 if (!ut->pth_name) {
407 char *tmp_pth_name = (char *)kalloc(MAXTHREADNAMESIZE);
408 if (!tmp_pth_name) {
409 return ENOMEM;
410 }
411 bzero(tmp_pth_name, MAXTHREADNAMESIZE);
412 if (!OSCompareAndSwapPtr(NULL, tmp_pth_name, &ut->pth_name)) {
413 kfree(tmp_pth_name, MAXTHREADNAMESIZE);
414 return EBUSY;
415 }
416 } else {
417 kernel_debug_string_simple(TRACE_STRING_THREADNAME_PREV, ut->pth_name);
418 bzero(ut->pth_name, MAXTHREADNAMESIZE);
419 }
420 error = copyin(newp, ut->pth_name, newlen);
421 if (error) {
422 return error;
423 }
424
425 kernel_debug_string_simple(TRACE_STRING_THREADNAME, ut->pth_name);
426 }
427
428 return 0;
429 }
430
431 SYSCTL_PROC(_kern, KERN_THREADNAME, threadname, CTLFLAG_ANYBODY | CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_handle_kern_threadname, "A", "");
432
433 #define BSD_HOST 1
434 STATIC int
435 sysctl_sched_stats(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
436 {
437 host_basic_info_data_t hinfo;
438 kern_return_t kret;
439 uint32_t size;
440 int changed;
441 mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
442 struct _processor_statistics_np *buf;
443 int error;
444
445 kret = host_info((host_t)BSD_HOST, HOST_BASIC_INFO, (host_info_t)&hinfo, &count);
446 if (kret != KERN_SUCCESS) {
447 return EINVAL;
448 }
449
450 size = sizeof(struct _processor_statistics_np) * (hinfo.logical_cpu_max + 2); /* One for RT Queue, One for Fair Share Queue */
451
452 if (req->oldlen < size) {
453 return EINVAL;
454 }
455
456 MALLOC(buf, struct _processor_statistics_np*, size, M_TEMP, M_ZERO | M_WAITOK);
457
458 kret = get_sched_statistics(buf, &size);
459 if (kret != KERN_SUCCESS) {
460 error = EINVAL;
461 goto out;
462 }
463
464 error = sysctl_io_opaque(req, buf, size, &changed);
465 if (error) {
466 goto out;
467 }
468
469 if (changed) {
470 panic("Sched info changed?!");
471 }
472 out:
473 FREE(buf, M_TEMP);
474 return error;
475 }
476
477 SYSCTL_PROC(_kern, OID_AUTO, sched_stats, CTLFLAG_LOCKED, 0, 0, sysctl_sched_stats, "-", "");
478
479 STATIC int
480 sysctl_sched_stats_enable(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req)
481 {
482 boolean_t active;
483 int res;
484
485 if (req->newlen != sizeof(active)) {
486 return EINVAL;
487 }
488
489 res = copyin(req->newptr, &active, sizeof(active));
490 if (res != 0) {
491 return res;
492 }
493
494 return set_sched_stats_active(active);
495 }
496
497 SYSCTL_PROC(_kern, OID_AUTO, sched_stats_enable, CTLFLAG_LOCKED | CTLFLAG_WR, 0, 0, sysctl_sched_stats_enable, "-", "");
498
499 extern uint32_t sched_debug_flags;
500 SYSCTL_INT(_debug, OID_AUTO, sched, CTLFLAG_RW | CTLFLAG_LOCKED, &sched_debug_flags, 0, "scheduler debug");
501
502 #if (DEBUG || DEVELOPMENT)
503 extern boolean_t doprnt_hide_pointers;
504 SYSCTL_INT(_debug, OID_AUTO, hide_kernel_pointers, CTLFLAG_RW | CTLFLAG_LOCKED, &doprnt_hide_pointers, 0, "hide kernel pointers from log");
505 #endif
506
507 extern int get_kernel_symfile(proc_t, char **);
508
509 #if COUNT_SYSCALLS
510 #define KERN_COUNT_SYSCALLS (KERN_OSTYPE + 1000)
511
512 extern const unsigned int nsysent;
513 extern int syscalls_log[];
514 extern const char *syscallnames[];
515
516 STATIC int
517 sysctl_docountsyscalls SYSCTL_HANDLER_ARGS
518 {
519 __unused int cmd = oidp->oid_arg2; /* subcommand*/
520 __unused int *name = arg1; /* oid element argument vector */
521 __unused int namelen = arg2; /* number of oid element arguments */
522 user_addr_t oldp = req->oldptr; /* user buffer copy out address */
523 size_t *oldlenp = &req->oldlen; /* user buffer copy out size */
524 user_addr_t newp = req->newptr; /* user buffer copy in address */
525 size_t newlen = req->newlen; /* user buffer copy in size */
526 int error;
527
528 int tmp;
529
530 /* valid values passed in:
531 * = 0 means don't keep called counts for each bsd syscall
532 * > 0 means keep called counts for each bsd syscall
533 * = 2 means dump current counts to the system log
534 * = 3 means reset all counts
535 * for example, to dump current counts:
536 * sysctl -w kern.count_calls=2
537 */
538 error = sysctl_int(oldp, oldlenp, newp, newlen, &tmp);
539 if (error != 0) {
540 return error;
541 }
542
543 if (tmp == 1) {
544 do_count_syscalls = 1;
545 } else if (tmp == 0 || tmp == 2 || tmp == 3) {
546 int i;
547 for (i = 0; i < nsysent; i++) {
548 if (syscalls_log[i] != 0) {
549 if (tmp == 2) {
550 printf("%d calls - name %s \n", syscalls_log[i], syscallnames[i]);
551 } else {
552 syscalls_log[i] = 0;
553 }
554 }
555 }
556 if (tmp != 0) {
557 do_count_syscalls = 1;
558 }
559 }
560
561 /* adjust index so we return the right required/consumed amount */
562 if (!error) {
563 req->oldidx += req->oldlen;
564 }
565
566 return error;
567 }
568 SYSCTL_PROC(_kern, KERN_COUNT_SYSCALLS, count_syscalls, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
569 0, /* Pointer argument (arg1) */
570 0, /* Integer argument (arg2) */
571 sysctl_docountsyscalls, /* Handler function */
572 NULL, /* Data pointer */
573 "");
574 #endif /* COUNT_SYSCALLS */
575
576 /*
577 * The following sysctl_* functions should not be used
578 * any more, as they can only cope with callers in
579 * user mode: Use new-style
580 * sysctl_io_number()
581 * sysctl_io_string()
582 * sysctl_io_opaque()
583 * instead.
584 */
585
586 /*
587 * Validate parameters and get old / set new parameters
588 * for an integer-valued sysctl function.
589 */
590 int
591 sysctl_int(user_addr_t oldp, size_t *oldlenp,
592 user_addr_t newp, size_t newlen, int *valp)
593 {
594 int error = 0;
595
596 if (oldp != USER_ADDR_NULL && oldlenp == NULL) {
597 return EFAULT;
598 }
599 if (oldp && *oldlenp < sizeof(int)) {
600 return ENOMEM;
601 }
602 if (newp && newlen != sizeof(int)) {
603 return EINVAL;
604 }
605 *oldlenp = sizeof(int);
606 if (oldp) {
607 error = copyout(valp, oldp, sizeof(int));
608 }
609 if (error == 0 && newp) {
610 error = copyin(newp, valp, sizeof(int));
611 AUDIT_ARG(value32, *valp);
612 }
613 return error;
614 }
615
616 /*
617 * Validate parameters and get old / set new parameters
618 * for an quad(64bit)-valued sysctl function.
619 */
620 int
621 sysctl_quad(user_addr_t oldp, size_t *oldlenp,
622 user_addr_t newp, size_t newlen, quad_t *valp)
623 {
624 int error = 0;
625
626 if (oldp != USER_ADDR_NULL && oldlenp == NULL) {
627 return EFAULT;
628 }
629 if (oldp && *oldlenp < sizeof(quad_t)) {
630 return ENOMEM;
631 }
632 if (newp && newlen != sizeof(quad_t)) {
633 return EINVAL;
634 }
635 *oldlenp = sizeof(quad_t);
636 if (oldp) {
637 error = copyout(valp, oldp, sizeof(quad_t));
638 }
639 if (error == 0 && newp) {
640 error = copyin(newp, valp, sizeof(quad_t));
641 }
642 return error;
643 }
644
645 STATIC int
646 sysdoproc_filt_KERN_PROC_PID(proc_t p, void * arg)
647 {
648 if (p->p_pid != (pid_t)*(int*)arg) {
649 return 0;
650 } else {
651 return 1;
652 }
653 }
654
655 STATIC int
656 sysdoproc_filt_KERN_PROC_PGRP(proc_t p, void * arg)
657 {
658 if (p->p_pgrpid != (pid_t)*(int*)arg) {
659 return 0;
660 } else {
661 return 1;
662 }
663 }
664
665 STATIC int
666 sysdoproc_filt_KERN_PROC_TTY(proc_t p, void * arg)
667 {
668 int retval;
669 struct tty *tp;
670
671 /* This is very racy but list lock is held.. Hmmm. */
672 if ((p->p_flag & P_CONTROLT) == 0 ||
673 (p->p_pgrp == NULL) || (p->p_pgrp->pg_session == NULL) ||
674 (tp = SESSION_TP(p->p_pgrp->pg_session)) == TTY_NULL ||
675 tp->t_dev != (dev_t)*(int*)arg) {
676 retval = 0;
677 } else {
678 retval = 1;
679 }
680
681 return retval;
682 }
683
684 STATIC int
685 sysdoproc_filt_KERN_PROC_UID(proc_t p, void * arg)
686 {
687 kauth_cred_t my_cred;
688 uid_t uid;
689
690 if (p->p_ucred == NULL) {
691 return 0;
692 }
693 my_cred = kauth_cred_proc_ref(p);
694 uid = kauth_cred_getuid(my_cred);
695 kauth_cred_unref(&my_cred);
696
697 if (uid != (uid_t)*(int*)arg) {
698 return 0;
699 } else {
700 return 1;
701 }
702 }
703
704
705 STATIC int
706 sysdoproc_filt_KERN_PROC_RUID(proc_t p, void * arg)
707 {
708 kauth_cred_t my_cred;
709 uid_t ruid;
710
711 if (p->p_ucred == NULL) {
712 return 0;
713 }
714 my_cred = kauth_cred_proc_ref(p);
715 ruid = kauth_cred_getruid(my_cred);
716 kauth_cred_unref(&my_cred);
717
718 if (ruid != (uid_t)*(int*)arg) {
719 return 0;
720 } else {
721 return 1;
722 }
723 }
724
725 /*
726 * try over estimating by 5 procs
727 */
728 #define KERN_PROCSLOP (5 * sizeof (struct kinfo_proc))
729 struct sysdoproc_args {
730 int buflen;
731 void *kprocp;
732 boolean_t is_64_bit;
733 user_addr_t dp;
734 size_t needed;
735 int sizeof_kproc;
736 int *errorp;
737 int uidcheck;
738 int ruidcheck;
739 int ttycheck;
740 int uidval;
741 };
742
743 int
744 sysdoproc_callback(proc_t p, void *arg)
745 {
746 struct sysdoproc_args *args = arg;
747
748 if (args->buflen >= args->sizeof_kproc) {
749 if ((args->ruidcheck != 0) && (sysdoproc_filt_KERN_PROC_RUID(p, &args->uidval) == 0)) {
750 return PROC_RETURNED;
751 }
752 if ((args->uidcheck != 0) && (sysdoproc_filt_KERN_PROC_UID(p, &args->uidval) == 0)) {
753 return PROC_RETURNED;
754 }
755 if ((args->ttycheck != 0) && (sysdoproc_filt_KERN_PROC_TTY(p, &args->uidval) == 0)) {
756 return PROC_RETURNED;
757 }
758
759 bzero(args->kprocp, args->sizeof_kproc);
760 if (args->is_64_bit) {
761 fill_user64_proc(p, args->kprocp);
762 } else {
763 fill_user32_proc(p, args->kprocp);
764 }
765 int error = copyout(args->kprocp, args->dp, args->sizeof_kproc);
766 if (error) {
767 *args->errorp = error;
768 return PROC_RETURNED_DONE;
769 }
770 args->dp += args->sizeof_kproc;
771 args->buflen -= args->sizeof_kproc;
772 }
773 args->needed += args->sizeof_kproc;
774 return PROC_RETURNED;
775 }
776
777 SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD | CTLFLAG_LOCKED, 0, "");
778 STATIC int
779 sysctl_prochandle SYSCTL_HANDLER_ARGS
780 {
781 int cmd = oidp->oid_arg2; /* subcommand for multiple nodes */
782 int *name = arg1; /* oid element argument vector */
783 int namelen = arg2; /* number of oid element arguments */
784 user_addr_t where = req->oldptr;/* user buffer copy out address */
785
786 user_addr_t dp = where;
787 size_t needed = 0;
788 int buflen = where != USER_ADDR_NULL ? req->oldlen : 0;
789 int error = 0;
790 boolean_t is_64_bit = proc_is64bit(current_proc());
791 struct user32_kinfo_proc user32_kproc;
792 struct user64_kinfo_proc user_kproc;
793 int sizeof_kproc;
794 void *kprocp;
795 int (*filterfn)(proc_t, void *) = 0;
796 struct sysdoproc_args args;
797 int uidcheck = 0;
798 int ruidcheck = 0;
799 int ttycheck = 0;
800
801 if (namelen != 1 && !(namelen == 0 && cmd == KERN_PROC_ALL)) {
802 return EINVAL;
803 }
804
805 if (is_64_bit) {
806 sizeof_kproc = sizeof(user_kproc);
807 kprocp = &user_kproc;
808 } else {
809 sizeof_kproc = sizeof(user32_kproc);
810 kprocp = &user32_kproc;
811 }
812
813 switch (cmd) {
814 case KERN_PROC_PID:
815 filterfn = sysdoproc_filt_KERN_PROC_PID;
816 break;
817
818 case KERN_PROC_PGRP:
819 filterfn = sysdoproc_filt_KERN_PROC_PGRP;
820 break;
821
822 case KERN_PROC_TTY:
823 ttycheck = 1;
824 break;
825
826 case KERN_PROC_UID:
827 uidcheck = 1;
828 break;
829
830 case KERN_PROC_RUID:
831 ruidcheck = 1;
832 break;
833
834 case KERN_PROC_ALL:
835 break;
836
837 default:
838 /* must be kern.proc.<unknown> */
839 return ENOTSUP;
840 }
841
842 error = 0;
843 args.buflen = buflen;
844 args.kprocp = kprocp;
845 args.is_64_bit = is_64_bit;
846 args.dp = dp;
847 args.needed = needed;
848 args.errorp = &error;
849 args.uidcheck = uidcheck;
850 args.ruidcheck = ruidcheck;
851 args.ttycheck = ttycheck;
852 args.sizeof_kproc = sizeof_kproc;
853 if (namelen) {
854 args.uidval = name[0];
855 }
856
857 proc_iterate((PROC_ALLPROCLIST | PROC_ZOMBPROCLIST),
858 sysdoproc_callback, &args, filterfn, name);
859
860 if (error) {
861 return error;
862 }
863
864 dp = args.dp;
865 needed = args.needed;
866
867 if (where != USER_ADDR_NULL) {
868 req->oldlen = dp - where;
869 if (needed > req->oldlen) {
870 return ENOMEM;
871 }
872 } else {
873 needed += KERN_PROCSLOP;
874 req->oldlen = needed;
875 }
876 /* adjust index so we return the right required/consumed amount */
877 req->oldidx += req->oldlen;
878 return 0;
879 }
880
881 /*
882 * We specify the subcommand code for multiple nodes as the 'req->arg2' value
883 * in the sysctl declaration itself, which comes into the handler function
884 * as 'oidp->oid_arg2'.
885 *
886 * For these particular sysctls, since they have well known OIDs, we could
887 * have just obtained it from the '((int *)arg1)[0]' parameter, but that would
888 * not demonstrate how to handle multiple sysctls that used OID_AUTO instead
889 * of a well known value with a common handler function. This is desirable,
890 * because we want well known values to "go away" at some future date.
891 *
892 * It should be noted that the value of '((int *)arg1)[1]' is used for many
893 * an integer parameter to the subcommand for many of these sysctls; we'd
894 * rather have used '((int *)arg1)[0]' for that, or even better, an element
895 * in a structure passed in as the the 'newp' argument to sysctlbyname(3),
896 * and then use leaf-node permissions enforcement, but that would have
897 * necessitated modifying user space code to correspond to the interface
898 * change, and we are striving for binary backward compatibility here; even
899 * though these are SPI, and not intended for use by user space applications
900 * which are not themselves system tools or libraries, some applications
901 * have erroneously used them.
902 */
903 SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
904 0, /* Pointer argument (arg1) */
905 KERN_PROC_ALL, /* Integer argument (arg2) */
906 sysctl_prochandle, /* Handler function */
907 NULL, /* Data is size variant on ILP32/LP64 */
908 "");
909 SYSCTL_PROC(_kern_proc, KERN_PROC_PID, pid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
910 0, /* Pointer argument (arg1) */
911 KERN_PROC_PID, /* Integer argument (arg2) */
912 sysctl_prochandle, /* Handler function */
913 NULL, /* Data is size variant on ILP32/LP64 */
914 "");
915 SYSCTL_PROC(_kern_proc, KERN_PROC_TTY, tty, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
916 0, /* Pointer argument (arg1) */
917 KERN_PROC_TTY, /* Integer argument (arg2) */
918 sysctl_prochandle, /* Handler function */
919 NULL, /* Data is size variant on ILP32/LP64 */
920 "");
921 SYSCTL_PROC(_kern_proc, KERN_PROC_PGRP, pgrp, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
922 0, /* Pointer argument (arg1) */
923 KERN_PROC_PGRP, /* Integer argument (arg2) */
924 sysctl_prochandle, /* Handler function */
925 NULL, /* Data is size variant on ILP32/LP64 */
926 "");
927 SYSCTL_PROC(_kern_proc, KERN_PROC_UID, uid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
928 0, /* Pointer argument (arg1) */
929 KERN_PROC_UID, /* Integer argument (arg2) */
930 sysctl_prochandle, /* Handler function */
931 NULL, /* Data is size variant on ILP32/LP64 */
932 "");
933 SYSCTL_PROC(_kern_proc, KERN_PROC_RUID, ruid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
934 0, /* Pointer argument (arg1) */
935 KERN_PROC_RUID, /* Integer argument (arg2) */
936 sysctl_prochandle, /* Handler function */
937 NULL, /* Data is size variant on ILP32/LP64 */
938 "");
939 SYSCTL_PROC(_kern_proc, KERN_PROC_LCID, lcid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
940 0, /* Pointer argument (arg1) */
941 KERN_PROC_LCID, /* Integer argument (arg2) */
942 sysctl_prochandle, /* Handler function */
943 NULL, /* Data is size variant on ILP32/LP64 */
944 "");
945
946
947 /*
948 * Fill in non-zero fields of an eproc structure for the specified process.
949 */
950 STATIC void
951 fill_user32_eproc(proc_t p, struct user32_eproc *__restrict ep)
952 {
953 struct tty *tp;
954 struct pgrp *pg;
955 struct session *sessp;
956 kauth_cred_t my_cred;
957
958 pg = proc_pgrp(p);
959 sessp = proc_session(p);
960
961 if (pg != PGRP_NULL) {
962 ep->e_pgid = p->p_pgrpid;
963 ep->e_jobc = pg->pg_jobc;
964 if (sessp != SESSION_NULL && sessp->s_ttyvp) {
965 ep->e_flag = EPROC_CTTY;
966 }
967 }
968 ep->e_ppid = p->p_ppid;
969 if (p->p_ucred) {
970 my_cred = kauth_cred_proc_ref(p);
971
972 /* A fake historical pcred */
973 ep->e_pcred.p_ruid = kauth_cred_getruid(my_cred);
974 ep->e_pcred.p_svuid = kauth_cred_getsvuid(my_cred);
975 ep->e_pcred.p_rgid = kauth_cred_getrgid(my_cred);
976 ep->e_pcred.p_svgid = kauth_cred_getsvgid(my_cred);
977
978 /* A fake historical *kauth_cred_t */
979 ep->e_ucred.cr_ref = os_atomic_load(&my_cred->cr_ref, relaxed);
980 ep->e_ucred.cr_uid = kauth_cred_getuid(my_cred);
981 ep->e_ucred.cr_ngroups = posix_cred_get(my_cred)->cr_ngroups;
982 bcopy(posix_cred_get(my_cred)->cr_groups,
983 ep->e_ucred.cr_groups, NGROUPS * sizeof(gid_t));
984
985 kauth_cred_unref(&my_cred);
986 }
987
988 if ((p->p_flag & P_CONTROLT) && (sessp != SESSION_NULL) &&
989 (tp = SESSION_TP(sessp))) {
990 ep->e_tdev = tp->t_dev;
991 ep->e_tpgid = sessp->s_ttypgrpid;
992 } else {
993 ep->e_tdev = NODEV;
994 }
995
996 if (sessp != SESSION_NULL) {
997 if (SESS_LEADER(p, sessp)) {
998 ep->e_flag |= EPROC_SLEADER;
999 }
1000 session_rele(sessp);
1001 }
1002 if (pg != PGRP_NULL) {
1003 pg_rele(pg);
1004 }
1005 }
1006
1007 /*
1008 * Fill in non-zero fields of an LP64 eproc structure for the specified process.
1009 */
1010 STATIC void
1011 fill_user64_eproc(proc_t p, struct user64_eproc *__restrict ep)
1012 {
1013 struct tty *tp;
1014 struct pgrp *pg;
1015 struct session *sessp;
1016 kauth_cred_t my_cred;
1017
1018 pg = proc_pgrp(p);
1019 sessp = proc_session(p);
1020
1021 if (pg != PGRP_NULL) {
1022 ep->e_pgid = p->p_pgrpid;
1023 ep->e_jobc = pg->pg_jobc;
1024 if (sessp != SESSION_NULL && sessp->s_ttyvp) {
1025 ep->e_flag = EPROC_CTTY;
1026 }
1027 }
1028 ep->e_ppid = p->p_ppid;
1029 if (p->p_ucred) {
1030 my_cred = kauth_cred_proc_ref(p);
1031
1032 /* A fake historical pcred */
1033 ep->e_pcred.p_ruid = kauth_cred_getruid(my_cred);
1034 ep->e_pcred.p_svuid = kauth_cred_getsvuid(my_cred);
1035 ep->e_pcred.p_rgid = kauth_cred_getrgid(my_cred);
1036 ep->e_pcred.p_svgid = kauth_cred_getsvgid(my_cred);
1037
1038 /* A fake historical *kauth_cred_t */
1039 ep->e_ucred.cr_ref = os_atomic_load(&my_cred->cr_ref, relaxed);
1040 ep->e_ucred.cr_uid = kauth_cred_getuid(my_cred);
1041 ep->e_ucred.cr_ngroups = posix_cred_get(my_cred)->cr_ngroups;
1042 bcopy(posix_cred_get(my_cred)->cr_groups,
1043 ep->e_ucred.cr_groups, NGROUPS * sizeof(gid_t));
1044
1045 kauth_cred_unref(&my_cred);
1046 }
1047
1048 if ((p->p_flag & P_CONTROLT) && (sessp != SESSION_NULL) &&
1049 (tp = SESSION_TP(sessp))) {
1050 ep->e_tdev = tp->t_dev;
1051 ep->e_tpgid = sessp->s_ttypgrpid;
1052 } else {
1053 ep->e_tdev = NODEV;
1054 }
1055
1056 if (sessp != SESSION_NULL) {
1057 if (SESS_LEADER(p, sessp)) {
1058 ep->e_flag |= EPROC_SLEADER;
1059 }
1060 session_rele(sessp);
1061 }
1062 if (pg != PGRP_NULL) {
1063 pg_rele(pg);
1064 }
1065 }
1066
1067 /*
1068 * Fill in an eproc structure for the specified process.
1069 * bzeroed by our caller, so only set non-zero fields.
1070 */
1071 STATIC void
1072 fill_user32_externproc(proc_t p, struct user32_extern_proc *__restrict exp)
1073 {
1074 exp->p_starttime.tv_sec = p->p_start.tv_sec;
1075 exp->p_starttime.tv_usec = p->p_start.tv_usec;
1076 exp->p_flag = p->p_flag;
1077 if (p->p_lflag & P_LTRACED) {
1078 exp->p_flag |= P_TRACED;
1079 }
1080 if (p->p_lflag & P_LPPWAIT) {
1081 exp->p_flag |= P_PPWAIT;
1082 }
1083 if (p->p_lflag & P_LEXIT) {
1084 exp->p_flag |= P_WEXIT;
1085 }
1086 exp->p_stat = p->p_stat;
1087 exp->p_pid = p->p_pid;
1088 exp->p_oppid = p->p_oppid;
1089 /* Mach related */
1090 exp->user_stack = p->user_stack;
1091 exp->p_debugger = p->p_debugger;
1092 exp->sigwait = p->sigwait;
1093 /* scheduling */
1094 #ifdef _PROC_HAS_SCHEDINFO_
1095 exp->p_estcpu = p->p_estcpu;
1096 exp->p_pctcpu = p->p_pctcpu;
1097 exp->p_slptime = p->p_slptime;
1098 #endif
1099 exp->p_realtimer.it_interval.tv_sec =
1100 (user32_time_t)p->p_realtimer.it_interval.tv_sec;
1101 exp->p_realtimer.it_interval.tv_usec =
1102 (__int32_t)p->p_realtimer.it_interval.tv_usec;
1103
1104 exp->p_realtimer.it_value.tv_sec =
1105 (user32_time_t)p->p_realtimer.it_value.tv_sec;
1106 exp->p_realtimer.it_value.tv_usec =
1107 (__int32_t)p->p_realtimer.it_value.tv_usec;
1108
1109 exp->p_rtime.tv_sec = (user32_time_t)p->p_rtime.tv_sec;
1110 exp->p_rtime.tv_usec = (__int32_t)p->p_rtime.tv_usec;
1111
1112 exp->p_sigignore = p->p_sigignore;
1113 exp->p_sigcatch = p->p_sigcatch;
1114 exp->p_priority = p->p_priority;
1115 exp->p_nice = p->p_nice;
1116 bcopy(&p->p_comm, &exp->p_comm, MAXCOMLEN);
1117 exp->p_xstat = p->p_xstat;
1118 exp->p_acflag = p->p_acflag;
1119 }
1120
1121 /*
1122 * Fill in an LP64 version of extern_proc structure for the specified process.
1123 */
1124 STATIC void
1125 fill_user64_externproc(proc_t p, struct user64_extern_proc *__restrict exp)
1126 {
1127 exp->p_starttime.tv_sec = p->p_start.tv_sec;
1128 exp->p_starttime.tv_usec = p->p_start.tv_usec;
1129 exp->p_flag = p->p_flag;
1130 if (p->p_lflag & P_LTRACED) {
1131 exp->p_flag |= P_TRACED;
1132 }
1133 if (p->p_lflag & P_LPPWAIT) {
1134 exp->p_flag |= P_PPWAIT;
1135 }
1136 if (p->p_lflag & P_LEXIT) {
1137 exp->p_flag |= P_WEXIT;
1138 }
1139 exp->p_stat = p->p_stat;
1140 exp->p_pid = p->p_pid;
1141 exp->p_oppid = p->p_oppid;
1142 /* Mach related */
1143 exp->user_stack = p->user_stack;
1144 exp->p_debugger = p->p_debugger;
1145 exp->sigwait = p->sigwait;
1146 /* scheduling */
1147 #ifdef _PROC_HAS_SCHEDINFO_
1148 exp->p_estcpu = p->p_estcpu;
1149 exp->p_pctcpu = p->p_pctcpu;
1150 exp->p_slptime = p->p_slptime;
1151 #endif
1152 exp->p_realtimer.it_interval.tv_sec = p->p_realtimer.it_interval.tv_sec;
1153 exp->p_realtimer.it_interval.tv_usec = p->p_realtimer.it_interval.tv_usec;
1154
1155 exp->p_realtimer.it_value.tv_sec = p->p_realtimer.it_value.tv_sec;
1156 exp->p_realtimer.it_value.tv_usec = p->p_realtimer.it_value.tv_usec;
1157
1158 exp->p_rtime.tv_sec = p->p_rtime.tv_sec;
1159 exp->p_rtime.tv_usec = p->p_rtime.tv_usec;
1160
1161 exp->p_sigignore = p->p_sigignore;
1162 exp->p_sigcatch = p->p_sigcatch;
1163 exp->p_priority = p->p_priority;
1164 exp->p_nice = p->p_nice;
1165 bcopy(&p->p_comm, &exp->p_comm, MAXCOMLEN);
1166 exp->p_xstat = p->p_xstat;
1167 exp->p_acflag = p->p_acflag;
1168 }
1169
1170 STATIC void
1171 fill_user32_proc(proc_t p, struct user32_kinfo_proc *__restrict kp)
1172 {
1173 /* on a 64 bit kernel, 32 bit users get some truncated information */
1174 fill_user32_externproc(p, &kp->kp_proc);
1175 fill_user32_eproc(p, &kp->kp_eproc);
1176 }
1177
1178 STATIC void
1179 fill_user64_proc(proc_t p, struct user64_kinfo_proc *__restrict kp)
1180 {
1181 fill_user64_externproc(p, &kp->kp_proc);
1182 fill_user64_eproc(p, &kp->kp_eproc);
1183 }
1184
1185 STATIC int
1186 sysctl_kdebug_ops SYSCTL_HANDLER_ARGS
1187 {
1188 __unused int cmd = oidp->oid_arg2; /* subcommand*/
1189 int *name = arg1; /* oid element argument vector */
1190 int namelen = arg2; /* number of oid element arguments */
1191 user_addr_t oldp = req->oldptr; /* user buffer copy out address */
1192 size_t *oldlenp = &req->oldlen; /* user buffer copy out size */
1193 // user_addr_t newp = req->newptr; /* user buffer copy in address */
1194 // size_t newlen = req->newlen; /* user buffer copy in size */
1195
1196 int ret = 0;
1197
1198 if (namelen == 0) {
1199 return ENOTSUP;
1200 }
1201
1202 switch (name[0]) {
1203 case KERN_KDEFLAGS:
1204 case KERN_KDDFLAGS:
1205 case KERN_KDENABLE:
1206 case KERN_KDGETBUF:
1207 case KERN_KDSETUP:
1208 case KERN_KDREMOVE:
1209 case KERN_KDSETREG:
1210 case KERN_KDGETREG:
1211 case KERN_KDREADTR:
1212 case KERN_KDWRITETR:
1213 case KERN_KDWRITEMAP:
1214 case KERN_KDTEST:
1215 case KERN_KDPIDTR:
1216 case KERN_KDTHRMAP:
1217 case KERN_KDPIDEX:
1218 case KERN_KDSETBUF:
1219 case KERN_KDREADCURTHRMAP:
1220 case KERN_KDSET_TYPEFILTER:
1221 case KERN_KDBUFWAIT:
1222 case KERN_KDCPUMAP:
1223 case KERN_KDWRITEMAP_V3:
1224 case KERN_KDWRITETR_V3:
1225 ret = kdbg_control(name, namelen, oldp, oldlenp);
1226 break;
1227 default:
1228 ret = ENOTSUP;
1229 break;
1230 }
1231
1232 /* adjust index so we return the right required/consumed amount */
1233 if (!ret) {
1234 req->oldidx += req->oldlen;
1235 }
1236
1237 return ret;
1238 }
1239 SYSCTL_PROC(_kern, KERN_KDEBUG, kdebug, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
1240 0, /* Pointer argument (arg1) */
1241 0, /* Integer argument (arg2) */
1242 sysctl_kdebug_ops, /* Handler function */
1243 NULL, /* Data pointer */
1244 "");
1245
1246
1247 #if !CONFIG_EMBEDDED
1248 /*
1249 * Return the top *sizep bytes of the user stack, or the entire area of the
1250 * user stack down through the saved exec_path, whichever is smaller.
1251 */
1252 STATIC int
1253 sysctl_doprocargs SYSCTL_HANDLER_ARGS
1254 {
1255 __unused int cmd = oidp->oid_arg2; /* subcommand*/
1256 int *name = arg1; /* oid element argument vector */
1257 int namelen = arg2; /* number of oid element arguments */
1258 user_addr_t oldp = req->oldptr; /* user buffer copy out address */
1259 size_t *oldlenp = &req->oldlen; /* user buffer copy out size */
1260 // user_addr_t newp = req->newptr; /* user buffer copy in address */
1261 // size_t newlen = req->newlen; /* user buffer copy in size */
1262 int error;
1263
1264 error = sysctl_procargsx( name, namelen, oldp, oldlenp, current_proc(), 0);
1265
1266 /* adjust index so we return the right required/consumed amount */
1267 if (!error) {
1268 req->oldidx += req->oldlen;
1269 }
1270
1271 return error;
1272 }
1273 SYSCTL_PROC(_kern, KERN_PROCARGS, procargs, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
1274 0, /* Pointer argument (arg1) */
1275 0, /* Integer argument (arg2) */
1276 sysctl_doprocargs, /* Handler function */
1277 NULL, /* Data pointer */
1278 "");
1279 #endif /* !CONFIG_EMBEDDED */
1280
1281 STATIC int
1282 sysctl_doprocargs2 SYSCTL_HANDLER_ARGS
1283 {
1284 __unused int cmd = oidp->oid_arg2; /* subcommand*/
1285 int *name = arg1; /* oid element argument vector */
1286 int namelen = arg2; /* number of oid element arguments */
1287 user_addr_t oldp = req->oldptr; /* user buffer copy out address */
1288 size_t *oldlenp = &req->oldlen; /* user buffer copy out size */
1289 // user_addr_t newp = req->newptr; /* user buffer copy in address */
1290 // size_t newlen = req->newlen; /* user buffer copy in size */
1291 int error;
1292
1293 error = sysctl_procargsx( name, namelen, oldp, oldlenp, current_proc(), 1);
1294
1295 /* adjust index so we return the right required/consumed amount */
1296 if (!error) {
1297 req->oldidx += req->oldlen;
1298 }
1299
1300 return error;
1301 }
1302 SYSCTL_PROC(_kern, KERN_PROCARGS2, procargs2, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED,
1303 0, /* Pointer argument (arg1) */
1304 0, /* Integer argument (arg2) */
1305 sysctl_doprocargs2, /* Handler function */
1306 NULL, /* Data pointer */
1307 "");
1308
1309 STATIC int
1310 sysctl_procargsx(int *name, u_int namelen, user_addr_t where,
1311 size_t *sizep, proc_t cur_proc, int argc_yes)
1312 {
1313 proc_t p;
1314 int buflen = where != USER_ADDR_NULL ? *sizep : 0;
1315 int error = 0;
1316 struct _vm_map *proc_map;
1317 struct task * task;
1318 vm_map_copy_t tmp;
1319 user_addr_t arg_addr;
1320 size_t arg_size;
1321 caddr_t data;
1322 size_t argslen = 0;
1323 int size;
1324 vm_size_t alloc_size = 0;
1325 vm_offset_t copy_start, copy_end;
1326 kern_return_t ret;
1327 int pid;
1328 kauth_cred_t my_cred;
1329 uid_t uid;
1330 int argc = -1;
1331
1332 if (namelen < 1) {
1333 return EINVAL;
1334 }
1335
1336 if (argc_yes) {
1337 buflen -= sizeof(int); /* reserve first word to return argc */
1338 }
1339 /* we only care about buflen when where (oldp from sysctl) is not NULL. */
1340 /* when where (oldp from sysctl) is NULL and sizep (oldlenp from sysctl */
1341 /* is not NULL then the caller wants us to return the length needed to */
1342 /* hold the data we would return */
1343 if (where != USER_ADDR_NULL && (buflen <= 0 || buflen > ARG_MAX)) {
1344 return EINVAL;
1345 }
1346 arg_size = buflen;
1347
1348 /*
1349 * Lookup process by pid
1350 */
1351 pid = name[0];
1352 p = proc_find(pid);
1353 if (p == NULL) {
1354 return EINVAL;
1355 }
1356
1357 /*
1358 * Copy the top N bytes of the stack.
1359 * On all machines we have so far, the stack grows
1360 * downwards.
1361 *
1362 * If the user expects no more than N bytes of
1363 * argument list, use that as a guess for the
1364 * size.
1365 */
1366
1367 if (!p->user_stack) {
1368 proc_rele(p);
1369 return EINVAL;
1370 }
1371
1372 if (where == USER_ADDR_NULL) {
1373 /* caller only wants to know length of proc args data */
1374 if (sizep == NULL) {
1375 proc_rele(p);
1376 return EFAULT;
1377 }
1378
1379 size = p->p_argslen;
1380 proc_rele(p);
1381 if (argc_yes) {
1382 size += sizeof(int);
1383 } else {
1384 /*
1385 * old PROCARGS will return the executable's path and plus some
1386 * extra space for work alignment and data tags
1387 */
1388 size += PATH_MAX + (6 * sizeof(int));
1389 }
1390 size += (size & (sizeof(int) - 1)) ? (sizeof(int) - (size & (sizeof(int) - 1))) : 0;
1391 *sizep = size;
1392 return 0;
1393 }
1394
1395 my_cred = kauth_cred_proc_ref(p);
1396 uid = kauth_cred_getuid(my_cred);
1397 kauth_cred_unref(&my_cred);
1398
1399 if ((uid != kauth_cred_getuid(kauth_cred_get()))
1400 && suser(kauth_cred_get(), &cur_proc->p_acflag)) {
1401 proc_rele(p);
1402 return EINVAL;
1403 }
1404
1405 if ((u_int)arg_size > p->p_argslen) {
1406 arg_size = round_page(p->p_argslen);
1407 }
1408
1409 arg_addr = p->user_stack - arg_size;
1410
1411 /*
1412 * Before we can block (any VM code), make another
1413 * reference to the map to keep it alive. We do
1414 * that by getting a reference on the task itself.
1415 */
1416 task = p->task;
1417 if (task == NULL) {
1418 proc_rele(p);
1419 return EINVAL;
1420 }
1421
1422 /* save off argc before releasing the proc */
1423 argc = p->p_argc;
1424
1425 argslen = p->p_argslen;
1426 /*
1427 * Once we have a task reference we can convert that into a
1428 * map reference, which we will use in the calls below. The
1429 * task/process may change its map after we take this reference
1430 * (see execve), but the worst that will happen then is a return
1431 * of stale info (which is always a possibility).
1432 */
1433 task_reference(task);
1434 proc_rele(p);
1435 proc_map = get_task_map_reference(task);
1436 task_deallocate(task);
1437
1438 if (proc_map == NULL) {
1439 return EINVAL;
1440 }
1441
1442 alloc_size = round_page(arg_size);
1443 ret = kmem_alloc(kernel_map, &copy_start, alloc_size, VM_KERN_MEMORY_BSD);
1444 if (ret != KERN_SUCCESS) {
1445 vm_map_deallocate(proc_map);
1446 return ENOMEM;
1447 }
1448 bzero((void *)copy_start, alloc_size);
1449
1450 copy_end = round_page(copy_start + arg_size);
1451
1452 if (vm_map_copyin(proc_map, (vm_map_address_t)arg_addr,
1453 (vm_map_size_t)arg_size, FALSE, &tmp) != KERN_SUCCESS) {
1454 vm_map_deallocate(proc_map);
1455 kmem_free(kernel_map, copy_start,
1456 round_page(arg_size));
1457 return EIO;
1458 }
1459
1460 /*
1461 * Now that we've done the copyin from the process'
1462 * map, we can release the reference to it.
1463 */
1464 vm_map_deallocate(proc_map);
1465
1466 if (vm_map_copy_overwrite(kernel_map,
1467 (vm_map_address_t)copy_start,
1468 tmp, FALSE) != KERN_SUCCESS) {
1469 kmem_free(kernel_map, copy_start,
1470 round_page(arg_size));
1471 vm_map_copy_discard(tmp);
1472 return EIO;
1473 }
1474
1475 if (arg_size > argslen) {
1476 data = (caddr_t) (copy_end - argslen);
1477 size = argslen;
1478 } else {
1479 data = (caddr_t) (copy_end - arg_size);
1480 size = arg_size;
1481 }
1482
1483 /*
1484 * When these sysctls were introduced, the first string in the strings
1485 * section was just the bare path of the executable. However, for security
1486 * reasons we now prefix this string with executable_path= so it can be
1487 * parsed getenv style. To avoid binary compatability issues with exising
1488 * callers of this sysctl, we strip it off here if present.
1489 * (rdar://problem/13746466)
1490 */
1491 #define EXECUTABLE_KEY "executable_path="
1492 if (strncmp(EXECUTABLE_KEY, data, strlen(EXECUTABLE_KEY)) == 0) {
1493 data += strlen(EXECUTABLE_KEY);
1494 size -= strlen(EXECUTABLE_KEY);
1495 }
1496
1497 if (argc_yes) {
1498 /* Put processes argc as the first word in the copyout buffer */
1499 suword(where, argc);
1500 error = copyout(data, (where + sizeof(int)), size);
1501 size += sizeof(int);
1502 } else {
1503 error = copyout(data, where, size);
1504
1505 /*
1506 * Make the old PROCARGS work to return the executable's path
1507 * But, only if there is enough space in the provided buffer
1508 *
1509 * on entry: data [possibily] points to the beginning of the path
1510 *
1511 * Note: we keep all pointers&sizes aligned to word boundries
1512 */
1513 if ((!error) && (buflen > 0 && (u_int)buflen > argslen)) {
1514 int binPath_sz, alignedBinPath_sz = 0;
1515 int extraSpaceNeeded, addThis;
1516 user_addr_t placeHere;
1517 char * str = (char *) data;
1518 int max_len = size;
1519
1520 /* Some apps are really bad about messing up their stacks
1521 * So, we have to be extra careful about getting the length
1522 * of the executing binary. If we encounter an error, we bail.
1523 */
1524
1525 /* Limit ourselves to PATH_MAX paths */
1526 if (max_len > PATH_MAX) {
1527 max_len = PATH_MAX;
1528 }
1529
1530 binPath_sz = 0;
1531
1532 while ((binPath_sz < max_len - 1) && (*str++ != 0)) {
1533 binPath_sz++;
1534 }
1535
1536 /* If we have a NUL terminator, copy it, too */
1537 if (binPath_sz < max_len - 1) {
1538 binPath_sz += 1;
1539 }
1540
1541 /* Pre-Flight the space requiremnts */
1542
1543 /* Account for the padding that fills out binPath to the next word */
1544 alignedBinPath_sz += (binPath_sz & (sizeof(int) - 1)) ? (sizeof(int) - (binPath_sz & (sizeof(int) - 1))) : 0;
1545
1546 placeHere = where + size;
1547
1548 /* Account for the bytes needed to keep placeHere word aligned */
1549 addThis = (placeHere & (sizeof(int) - 1)) ? (sizeof(int) - (placeHere & (sizeof(int) - 1))) : 0;
1550
1551 /* Add up all the space that is needed */
1552 extraSpaceNeeded = alignedBinPath_sz + addThis + binPath_sz + (4 * sizeof(int));
1553
1554 /* is there is room to tack on argv[0]? */
1555 if ((buflen & ~(sizeof(int) - 1)) >= (argslen + extraSpaceNeeded)) {
1556 placeHere += addThis;
1557 suword(placeHere, 0);
1558 placeHere += sizeof(int);
1559 suword(placeHere, 0xBFFF0000);
1560 placeHere += sizeof(int);
1561 suword(placeHere, 0);
1562 placeHere += sizeof(int);
1563 error = copyout(data, placeHere, binPath_sz);
1564 if (!error) {
1565 placeHere += binPath_sz;
1566 suword(placeHere, 0);
1567 size += extraSpaceNeeded;
1568 }
1569 }
1570 }
1571 }
1572
1573 if (copy_start != (vm_offset_t) 0) {
1574 kmem_free(kernel_map, copy_start, copy_end - copy_start);
1575 }
1576 if (error) {
1577 return error;
1578 }
1579
1580 if (where != USER_ADDR_NULL) {
1581 *sizep = size;
1582 }
1583 return 0;
1584 }
1585
1586
1587 /*
1588 * Max number of concurrent aio requests
1589 */
1590 STATIC int
1591 sysctl_aiomax
1592 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1593 {
1594 int new_value, changed;
1595 int error = sysctl_io_number(req, aio_max_requests, sizeof(int), &new_value, &changed);
1596 if (changed) {
1597 /* make sure the system-wide limit is greater than the per process limit */
1598 if (new_value >= aio_max_requests_per_process && new_value <= AIO_MAX_REQUESTS) {
1599 aio_max_requests = new_value;
1600 } else {
1601 error = EINVAL;
1602 }
1603 }
1604 return error;
1605 }
1606
1607
1608 /*
1609 * Max number of concurrent aio requests per process
1610 */
1611 STATIC int
1612 sysctl_aioprocmax
1613 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1614 {
1615 int new_value, changed;
1616 int error = sysctl_io_number(req, aio_max_requests_per_process, sizeof(int), &new_value, &changed);
1617 if (changed) {
1618 /* make sure per process limit is less than the system-wide limit */
1619 if (new_value <= aio_max_requests && new_value >= AIO_LISTIO_MAX) {
1620 aio_max_requests_per_process = new_value;
1621 } else {
1622 error = EINVAL;
1623 }
1624 }
1625 return error;
1626 }
1627
1628
1629 /*
1630 * Max number of async IO worker threads
1631 */
1632 STATIC int
1633 sysctl_aiothreads
1634 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1635 {
1636 int new_value, changed;
1637 int error = sysctl_io_number(req, aio_worker_threads, sizeof(int), &new_value, &changed);
1638 if (changed) {
1639 /* we only allow an increase in the number of worker threads */
1640 if (new_value > aio_worker_threads) {
1641 _aio_create_worker_threads((new_value - aio_worker_threads));
1642 aio_worker_threads = new_value;
1643 } else {
1644 error = EINVAL;
1645 }
1646 }
1647 return error;
1648 }
1649
1650
1651 /*
1652 * System-wide limit on the max number of processes
1653 */
1654 STATIC int
1655 sysctl_maxproc
1656 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1657 {
1658 int new_value, changed;
1659 int error = sysctl_io_number(req, maxproc, sizeof(int), &new_value, &changed);
1660 if (changed) {
1661 AUDIT_ARG(value32, new_value);
1662 /* make sure the system-wide limit is less than the configured hard
1663 * limit set at kernel compilation */
1664 if (new_value <= hard_maxproc && new_value > 0) {
1665 maxproc = new_value;
1666 } else {
1667 error = EINVAL;
1668 }
1669 }
1670 return error;
1671 }
1672
1673 extern int sched_enable_smt;
1674 STATIC int
1675 sysctl_sched_enable_smt
1676 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1677 {
1678 int new_value, changed;
1679 int error = sysctl_io_number(req, sched_enable_smt, sizeof(int), &new_value, &changed);
1680 if (error) {
1681 return error;
1682 }
1683 kern_return_t kret = KERN_SUCCESS;
1684 if (changed) {
1685 AUDIT_ARG(value32, new_value);
1686 if (new_value == 0) {
1687 sched_enable_smt = 0;
1688 kret = enable_smt_processors(false);
1689 } else {
1690 sched_enable_smt = 1;
1691 kret = enable_smt_processors(true);
1692 }
1693 }
1694 switch (kret) {
1695 case KERN_SUCCESS:
1696 error = 0;
1697 break;
1698 case KERN_INVALID_ARGUMENT:
1699 error = EINVAL;
1700 break;
1701 case KERN_FAILURE:
1702 error = EBUSY;
1703 break;
1704 default:
1705 error = ENOENT;
1706 break;
1707 }
1708
1709 return error;
1710 }
1711
1712 SYSCTL_STRING(_kern, KERN_OSTYPE, ostype,
1713 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1714 ostype, 0, "");
1715 SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease,
1716 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1717 osrelease, 0, "");
1718 SYSCTL_INT(_kern, KERN_OSREV, osrevision,
1719 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1720 (int *)NULL, BSD, "");
1721 SYSCTL_STRING(_kern, KERN_VERSION, version,
1722 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1723 version, 0, "");
1724 SYSCTL_STRING(_kern, OID_AUTO, uuid,
1725 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1726 &kernel_uuid_string[0], 0, "");
1727
1728 SYSCTL_STRING(_kern, OID_AUTO, osbuildconfig,
1729 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLFLAG_MASKED,
1730 &osbuild_config[0], 0, "");
1731
1732 STATIC int
1733 sysctl_protoboot(__unused struct sysctl_oid *oidp,
1734 __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1735 {
1736 int error = -1;
1737 #if CONFIG_LOCKERBOOT
1738 char protoboot_buff[24];
1739 size_t protoboot_len = sizeof(protoboot_buff);
1740
1741 if (vnode_tag(rootvnode) == VT_LOCKERFS) {
1742 strlcpy(protoboot_buff, kernel_protoboot_mount, protoboot_len);
1743 error = sysctl_io_string(req, protoboot_buff, protoboot_len, 0, NULL);
1744 } else {
1745 error = EFTYPE;
1746 }
1747
1748 #else
1749 #pragma unused(req)
1750 error = ENOTSUP;
1751 #endif
1752
1753 return error;
1754 }
1755
1756 SYSCTL_PROC(_kern, OID_AUTO, protoboot,
1757 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED,
1758 0, 0, sysctl_protoboot, "A", "");
1759
1760 #if DEBUG
1761 #ifndef DKPR
1762 #define DKPR 1
1763 #endif
1764 #endif
1765
1766 #if DKPR
1767 int debug_kprint_syscall = 0;
1768 char debug_kprint_syscall_process[MAXCOMLEN + 1];
1769
1770 /* Thread safe: bits and string value are not used to reclaim state */
1771 SYSCTL_INT(_debug, OID_AUTO, kprint_syscall,
1772 CTLFLAG_RW | CTLFLAG_LOCKED, &debug_kprint_syscall, 0, "kprintf syscall tracing");
1773 SYSCTL_STRING(_debug, OID_AUTO, kprint_syscall_process,
1774 CTLFLAG_RW | CTLFLAG_LOCKED, debug_kprint_syscall_process, sizeof(debug_kprint_syscall_process),
1775 "name of process for kprintf syscall tracing");
1776
1777 int
1778 debug_kprint_current_process(const char **namep)
1779 {
1780 struct proc *p = current_proc();
1781
1782 if (p == NULL) {
1783 return 0;
1784 }
1785
1786 if (debug_kprint_syscall_process[0]) {
1787 /* user asked to scope tracing to a particular process name */
1788 if (0 == strncmp(debug_kprint_syscall_process,
1789 p->p_comm, sizeof(debug_kprint_syscall_process))) {
1790 /* no value in telling the user that we traced what they asked */
1791 if (namep) {
1792 *namep = NULL;
1793 }
1794
1795 return 1;
1796 } else {
1797 return 0;
1798 }
1799 }
1800
1801 /* trace all processes. Tell user what we traced */
1802 if (namep) {
1803 *namep = p->p_comm;
1804 }
1805
1806 return 1;
1807 }
1808 #endif
1809
1810 /* PR-5293665: need to use a callback function for kern.osversion to set
1811 * osversion in IORegistry */
1812
1813 STATIC int
1814 sysctl_osversion(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
1815 {
1816 int rval = 0;
1817
1818 rval = sysctl_handle_string(oidp, arg1, arg2, req);
1819
1820 if (req->newptr) {
1821 IORegistrySetOSBuildVersion((char *)arg1);
1822 }
1823
1824 return rval;
1825 }
1826
1827 SYSCTL_PROC(_kern, KERN_OSVERSION, osversion,
1828 CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED,
1829 osversion, 256 /* OSVERSIZE*/,
1830 sysctl_osversion, "A", "");
1831
1832 char osproductversion[48] = { '\0' };
1833
1834 STATIC int
1835 sysctl_osproductversion(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
1836 {
1837 if (req->newptr != 0) {
1838 /*
1839 * Can only ever be set by launchd, and only once at boot.
1840 */
1841 if (req->p->p_pid != 1 || osproductversion[0] != '\0') {
1842 return EPERM;
1843 }
1844 }
1845
1846 return sysctl_handle_string(oidp, arg1, arg2, req);
1847 }
1848
1849 SYSCTL_PROC(_kern, OID_AUTO, osproductversion,
1850 CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED,
1851 osproductversion, sizeof(osproductversion),
1852 sysctl_osproductversion, "A", "The ProductVersion from SystemVersion.plist");
1853
1854 static uint64_t iossupportversion_string[48];
1855
1856 STATIC int
1857 sysctl_iossupportversion(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
1858 {
1859 if (req->newptr != 0) {
1860 /*
1861 * Can only ever be set by launchd, and only once at boot.
1862 */
1863 if (req->p->p_pid != 1 || iossupportversion_string[0] != '\0') {
1864 return EPERM;
1865 }
1866 }
1867
1868 return sysctl_handle_string(oidp, arg1, arg2, req);
1869 }
1870
1871 SYSCTL_PROC(_kern, OID_AUTO, iossupportversion,
1872 CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED,
1873 iossupportversion_string, sizeof(iossupportversion_string),
1874 sysctl_iossupportversion, "A", "The iOSSupportVersion from SystemVersion.plist");
1875
1876 static uint64_t osvariant_status = 0;
1877
1878 STATIC int
1879 sysctl_osvariant_status(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
1880 {
1881 if (req->newptr != 0) {
1882 /*
1883 * Can only ever be set by launchd, and only once at boot.
1884 */
1885 if (req->p->p_pid != 1 || osvariant_status != 0) {
1886 return EPERM;
1887 }
1888 }
1889
1890 return sysctl_handle_quad(oidp, arg1, arg2, req);
1891 }
1892
1893 SYSCTL_PROC(_kern, OID_AUTO, osvariant_status,
1894 CTLFLAG_RW | CTLTYPE_QUAD | CTLFLAG_LOCKED | CTLFLAG_MASKED,
1895 &osvariant_status, sizeof(osvariant_status),
1896 sysctl_osvariant_status, "Q", "Opaque flags used to cache OS variant information");
1897
1898 extern void commpage_update_dyld_flags(uint64_t);
1899 static uint64_t dyld_system_flags = 0;
1900
1901 STATIC int
1902 sysctl_dyld_system_flags(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
1903 {
1904 /*
1905 * Can only ever be set by launchd, possibly several times
1906 * as dyld may change its mind after a userspace reboot.
1907 */
1908 if (req->newptr != 0 && req->p->p_pid != 1) {
1909 return EPERM;
1910 }
1911
1912 int res = sysctl_handle_quad(oidp, arg1, arg2, req);
1913 if (req->newptr && res == 0) {
1914 commpage_update_dyld_flags(osvariant_status);
1915 }
1916 return res;
1917 }
1918
1919 SYSCTL_PROC(_kern, OID_AUTO, dyld_system_flags,
1920 CTLFLAG_RW | CTLTYPE_QUAD | CTLFLAG_LOCKED | CTLFLAG_MASKED,
1921 &dyld_system_flags, sizeof(dyld_system_flags),
1922 sysctl_dyld_system_flags, "Q", "Opaque flags used to cache dyld system-wide configuration");
1923
1924 #if defined(XNU_TARGET_OS_BRIDGE)
1925 char macosproductversion[MACOS_VERS_LEN] = { '\0' };
1926
1927 SYSCTL_STRING(_kern, OID_AUTO, macosproductversion,
1928 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
1929 &macosproductversion[0], MACOS_VERS_LEN, "The currently running macOS ProductVersion (from SystemVersion.plist on macOS)");
1930
1931 char macosversion[MACOS_VERS_LEN] = { '\0' };
1932
1933 SYSCTL_STRING(_kern, OID_AUTO, macosversion,
1934 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
1935 &macosversion[0], MACOS_VERS_LEN, "The currently running macOS build version");
1936 #endif
1937
1938 STATIC int
1939 sysctl_sysctl_bootargs
1940 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
1941 {
1942 int error;
1943 char buf[BOOT_LINE_LENGTH];
1944
1945 strlcpy(buf, PE_boot_args(), BOOT_LINE_LENGTH);
1946 error = sysctl_io_string(req, buf, BOOT_LINE_LENGTH, 0, NULL);
1947 return error;
1948 }
1949
1950 SYSCTL_PROC(_kern, OID_AUTO, bootargs,
1951 CTLFLAG_LOCKED | CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING,
1952 NULL, 0,
1953 sysctl_sysctl_bootargs, "A", "bootargs");
1954
1955 STATIC int
1956 sysctl_kernelcacheuuid(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
1957 {
1958 int rval = ENOENT;
1959 if (kernelcache_uuid_valid) {
1960 rval = sysctl_handle_string(oidp, arg1, arg2, req);
1961 }
1962 return rval;
1963 }
1964
1965 SYSCTL_PROC(_kern, OID_AUTO, kernelcacheuuid,
1966 CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED,
1967 kernelcache_uuid_string, sizeof(kernelcache_uuid_string),
1968 sysctl_kernelcacheuuid, "A", "");
1969
1970 SYSCTL_INT(_kern, KERN_MAXFILES, maxfiles,
1971 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
1972 &maxfiles, 0, "");
1973 SYSCTL_INT(_kern, KERN_ARGMAX, argmax,
1974 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1975 (int *)NULL, ARG_MAX, "");
1976 SYSCTL_INT(_kern, KERN_POSIX1, posix1version,
1977 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1978 (int *)NULL, _POSIX_VERSION, "");
1979 SYSCTL_INT(_kern, KERN_NGROUPS, ngroups,
1980 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1981 (int *)NULL, NGROUPS_MAX, "");
1982 SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control,
1983 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1984 (int *)NULL, 1, "");
1985 #if 1 /* _POSIX_SAVED_IDS from <unistd.h> */
1986 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids,
1987 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1988 (int *)NULL, 1, "");
1989 #else
1990 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids,
1991 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
1992 NULL, 0, "");
1993 #endif
1994 SYSCTL_INT(_kern, OID_AUTO, num_files,
1995 CTLFLAG_RD | CTLFLAG_LOCKED,
1996 &nfiles, 0, "");
1997 SYSCTL_COMPAT_INT(_kern, OID_AUTO, num_vnodes,
1998 CTLFLAG_RD | CTLFLAG_LOCKED,
1999 &numvnodes, 0, "");
2000 SYSCTL_INT(_kern, OID_AUTO, num_tasks,
2001 CTLFLAG_RD | CTLFLAG_LOCKED,
2002 &task_max, 0, "");
2003 SYSCTL_INT(_kern, OID_AUTO, num_threads,
2004 CTLFLAG_RD | CTLFLAG_LOCKED,
2005 &thread_max, 0, "");
2006 SYSCTL_INT(_kern, OID_AUTO, num_taskthreads,
2007 CTLFLAG_RD | CTLFLAG_LOCKED,
2008 &task_threadmax, 0, "");
2009 SYSCTL_LONG(_kern, OID_AUTO, num_recycledvnodes,
2010 CTLFLAG_RD | CTLFLAG_LOCKED,
2011 &num_recycledvnodes, "");
2012
2013 STATIC int
2014 sysctl_maxvnodes(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2015 {
2016 int oldval = desiredvnodes;
2017 int error = sysctl_io_number(req, desiredvnodes, sizeof(int), &desiredvnodes, NULL);
2018
2019 if (oldval != desiredvnodes) {
2020 resize_namecache(desiredvnodes);
2021 }
2022
2023 return error;
2024 }
2025
2026 SYSCTL_INT(_kern, OID_AUTO, namecache_disabled,
2027 CTLFLAG_RW | CTLFLAG_LOCKED,
2028 &nc_disabled, 0, "");
2029
2030 SYSCTL_PROC(_kern, KERN_MAXVNODES, maxvnodes,
2031 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2032 0, 0, sysctl_maxvnodes, "I", "");
2033
2034 SYSCTL_PROC(_kern, KERN_MAXPROC, maxproc,
2035 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2036 0, 0, sysctl_maxproc, "I", "");
2037
2038 SYSCTL_PROC(_kern, KERN_AIOMAX, aiomax,
2039 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2040 0, 0, sysctl_aiomax, "I", "");
2041
2042 SYSCTL_PROC(_kern, KERN_AIOPROCMAX, aioprocmax,
2043 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2044 0, 0, sysctl_aioprocmax, "I", "");
2045
2046 SYSCTL_PROC(_kern, KERN_AIOTHREADS, aiothreads,
2047 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2048 0, 0, sysctl_aiothreads, "I", "");
2049
2050 SYSCTL_PROC(_kern, OID_AUTO, sched_enable_smt,
2051 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_KERN,
2052 0, 0, sysctl_sched_enable_smt, "I", "");
2053
2054 extern int sched_allow_NO_SMT_threads;
2055 SYSCTL_INT(_kern, OID_AUTO, sched_allow_NO_SMT_threads,
2056 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
2057 &sched_allow_NO_SMT_threads, 0, "");
2058
2059 #if (DEVELOPMENT || DEBUG)
2060 extern int sched_smt_balance;
2061 SYSCTL_INT(_kern, OID_AUTO, sched_smt_balance,
2062 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
2063 &sched_smt_balance, 0, "");
2064 extern int sched_allow_rt_smt;
2065 SYSCTL_INT(_kern, OID_AUTO, sched_allow_rt_smt,
2066 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
2067 &sched_allow_rt_smt, 0, "");
2068 extern int sched_avoid_cpu0;
2069 SYSCTL_INT(_kern, OID_AUTO, sched_avoid_cpu0,
2070 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
2071 &sched_avoid_cpu0, 0, "");
2072 #if __arm__ || __arm64__
2073 extern uint32_t perfcontrol_requested_recommended_cores;
2074 SYSCTL_UINT(_kern, OID_AUTO, sched_recommended_cores,
2075 CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED,
2076 &perfcontrol_requested_recommended_cores, 0, "");
2077
2078 /* Scheduler perfcontrol callouts sysctls */
2079 SYSCTL_DECL(_kern_perfcontrol_callout);
2080 SYSCTL_NODE(_kern, OID_AUTO, perfcontrol_callout, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
2081 "scheduler perfcontrol callouts");
2082
2083 extern int perfcontrol_callout_stats_enabled;
2084 SYSCTL_INT(_kern_perfcontrol_callout, OID_AUTO, stats_enabled,
2085 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
2086 &perfcontrol_callout_stats_enabled, 0, "");
2087
2088 extern uint64_t perfcontrol_callout_stat_avg(perfcontrol_callout_type_t type,
2089 perfcontrol_callout_stat_t stat);
2090
2091 /* On-Core Callout */
2092 STATIC int
2093 sysctl_perfcontrol_callout_stat
2094 (__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
2095 {
2096 perfcontrol_callout_stat_t stat = (perfcontrol_callout_stat_t)arg1;
2097 perfcontrol_callout_type_t type = (perfcontrol_callout_type_t)arg2;
2098 return sysctl_io_number(req, (int)perfcontrol_callout_stat_avg(type, stat),
2099 sizeof(int), NULL, NULL);
2100 }
2101
2102 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, oncore_instr,
2103 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2104 (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_ON_CORE,
2105 sysctl_perfcontrol_callout_stat, "I", "");
2106 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, oncore_cycles,
2107 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2108 (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_ON_CORE,
2109 sysctl_perfcontrol_callout_stat, "I", "");
2110 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, offcore_instr,
2111 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2112 (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_OFF_CORE,
2113 sysctl_perfcontrol_callout_stat, "I", "");
2114 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, offcore_cycles,
2115 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2116 (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_OFF_CORE,
2117 sysctl_perfcontrol_callout_stat, "I", "");
2118 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, context_instr,
2119 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2120 (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_CONTEXT,
2121 sysctl_perfcontrol_callout_stat, "I", "");
2122 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, context_cycles,
2123 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2124 (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_CONTEXT,
2125 sysctl_perfcontrol_callout_stat, "I", "");
2126 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, update_instr,
2127 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2128 (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_STATE_UPDATE,
2129 sysctl_perfcontrol_callout_stat, "I", "");
2130 SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, update_cycles,
2131 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2132 (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_STATE_UPDATE,
2133 sysctl_perfcontrol_callout_stat, "I", "");
2134
2135 #endif /* __arm__ || __arm64__ */
2136
2137 #if __arm64__
2138 extern int legacy_footprint_entitlement_mode;
2139 SYSCTL_INT(_kern, OID_AUTO, legacy_footprint_entitlement_mode,
2140 CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED,
2141 &legacy_footprint_entitlement_mode, 0, "");
2142 #endif /* __arm64__ */
2143
2144 #endif /* (DEVELOPMENT || DEBUG) */
2145
2146 STATIC int
2147 sysctl_securelvl
2148 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2149 {
2150 int new_value, changed;
2151 int error = sysctl_io_number(req, securelevel, sizeof(int), &new_value, &changed);
2152 if (changed) {
2153 if (!(new_value < securelevel && req->p->p_pid != 1)) {
2154 proc_list_lock();
2155 securelevel = new_value;
2156 proc_list_unlock();
2157 } else {
2158 error = EPERM;
2159 }
2160 }
2161 return error;
2162 }
2163
2164 SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
2165 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2166 0, 0, sysctl_securelvl, "I", "");
2167
2168
2169 STATIC int
2170 sysctl_domainname
2171 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2172 {
2173 int error, changed;
2174 char tmpname[MAXHOSTNAMELEN] = {};
2175
2176 lck_mtx_lock(&domainname_lock);
2177 strlcpy(tmpname, domainname, sizeof(tmpname));
2178 lck_mtx_unlock(&domainname_lock);
2179
2180 error = sysctl_io_string(req, tmpname, sizeof(tmpname), 0, &changed);
2181 if (!error && changed) {
2182 lck_mtx_lock(&hostname_lock);
2183 strlcpy(domainname, tmpname, sizeof(domainname));
2184 lck_mtx_unlock(&hostname_lock);
2185 }
2186 return error;
2187 }
2188
2189 SYSCTL_PROC(_kern, KERN_DOMAINNAME, nisdomainname,
2190 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED,
2191 0, 0, sysctl_domainname, "A", "");
2192
2193 SYSCTL_COMPAT_INT(_kern, KERN_HOSTID, hostid,
2194 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2195 &hostid, 0, "");
2196
2197 STATIC int
2198 sysctl_hostname
2199 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2200 {
2201 int error, changed;
2202 char tmpname[MAXHOSTNAMELEN] = {};
2203
2204 lck_mtx_lock(&hostname_lock);
2205 strlcpy(tmpname, hostname, sizeof(tmpname));
2206 lck_mtx_unlock(&hostname_lock);
2207
2208 error = sysctl_io_string(req, tmpname, sizeof(tmpname), 1, &changed);
2209 if (!error && changed) {
2210 lck_mtx_lock(&hostname_lock);
2211 strlcpy(hostname, tmpname, sizeof(hostname));
2212 lck_mtx_unlock(&hostname_lock);
2213 }
2214 return error;
2215 }
2216
2217 SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
2218 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED,
2219 0, 0, sysctl_hostname, "A", "");
2220
2221 STATIC int
2222 sysctl_procname
2223 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2224 {
2225 /* Original code allowed writing, I'm copying this, although this all makes
2226 * no sense to me. Besides, this sysctl is never used. */
2227 return sysctl_io_string(req, &req->p->p_name[0], (2 * MAXCOMLEN + 1), 1, NULL);
2228 }
2229
2230 SYSCTL_PROC(_kern, KERN_PROCNAME, procname,
2231 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED,
2232 0, 0, sysctl_procname, "A", "");
2233
2234 SYSCTL_INT(_kern, KERN_SPECULATIVE_READS, speculative_reads_disabled,
2235 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2236 &speculative_reads_disabled, 0, "");
2237
2238 SYSCTL_UINT(_kern, OID_AUTO, preheat_max_bytes,
2239 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2240 &preheat_max_bytes, 0, "");
2241
2242 SYSCTL_UINT(_kern, OID_AUTO, preheat_min_bytes,
2243 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2244 &preheat_min_bytes, 0, "");
2245
2246 SYSCTL_UINT(_kern, OID_AUTO, speculative_prefetch_max,
2247 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2248 &speculative_prefetch_max, 0, "");
2249
2250 SYSCTL_UINT(_kern, OID_AUTO, speculative_prefetch_max_iosize,
2251 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2252 &speculative_prefetch_max_iosize, 0, "");
2253
2254 SYSCTL_UINT(_kern, OID_AUTO, vm_page_free_target,
2255 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2256 &vm_page_free_target, 0, "");
2257
2258 SYSCTL_UINT(_kern, OID_AUTO, vm_page_free_min,
2259 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2260 &vm_page_free_min, 0, "");
2261
2262 SYSCTL_UINT(_kern, OID_AUTO, vm_page_free_reserved,
2263 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2264 &vm_page_free_reserved, 0, "");
2265
2266 SYSCTL_UINT(_kern, OID_AUTO, vm_page_speculative_percentage,
2267 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2268 &vm_pageout_state.vm_page_speculative_percentage, 0, "");
2269
2270 SYSCTL_UINT(_kern, OID_AUTO, vm_page_speculative_q_age_ms,
2271 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2272 &vm_pageout_state.vm_page_speculative_q_age_ms, 0, "");
2273
2274 SYSCTL_UINT(_kern, OID_AUTO, vm_max_delayed_work_limit,
2275 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2276 &vm_max_delayed_work_limit, 0, "");
2277
2278 SYSCTL_UINT(_kern, OID_AUTO, vm_max_batch,
2279 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2280 &vm_max_batch, 0, "");
2281
2282 SYSCTL_STRING(_kern, OID_AUTO, bootsessionuuid,
2283 CTLFLAG_RD | CTLFLAG_LOCKED,
2284 &bootsessionuuid_string, sizeof(bootsessionuuid_string), "");
2285
2286 STATIC int
2287 sysctl_boottime
2288 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2289 {
2290 struct timeval tv;
2291 boottime_timeval(&tv);
2292 struct proc *p = req->p;
2293
2294 if (proc_is64bit(p)) {
2295 struct user64_timeval t = {};
2296 t.tv_sec = tv.tv_sec;
2297 t.tv_usec = tv.tv_usec;
2298 return sysctl_io_opaque(req, &t, sizeof(t), NULL);
2299 } else {
2300 struct user32_timeval t = {};
2301 t.tv_sec = tv.tv_sec;
2302 t.tv_usec = tv.tv_usec;
2303 return sysctl_io_opaque(req, &t, sizeof(t), NULL);
2304 }
2305 }
2306
2307 SYSCTL_PROC(_kern, KERN_BOOTTIME, boottime,
2308 CTLTYPE_STRUCT | CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED,
2309 0, 0, sysctl_boottime, "S,timeval", "");
2310
2311 STATIC int
2312 sysctl_symfile
2313 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2314 {
2315 char *str;
2316 int error = get_kernel_symfile(req->p, &str);
2317 if (error) {
2318 return error;
2319 }
2320 return sysctl_io_string(req, str, 0, 0, NULL);
2321 }
2322
2323
2324 SYSCTL_PROC(_kern, KERN_SYMFILE, symfile,
2325 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED,
2326 0, 0, sysctl_symfile, "A", "");
2327
2328 #if NFSCLIENT
2329 STATIC int
2330 sysctl_netboot
2331 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2332 {
2333 return sysctl_io_number(req, netboot_root(), sizeof(int), NULL, NULL);
2334 }
2335
2336 SYSCTL_PROC(_kern, KERN_NETBOOT, netboot,
2337 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2338 0, 0, sysctl_netboot, "I", "");
2339 #endif
2340
2341 #ifdef CONFIG_IMGSRC_ACCESS
2342 /*
2343 * Legacy--act as if only one layer of nesting is possible.
2344 */
2345 STATIC int
2346 sysctl_imgsrcdev
2347 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2348 {
2349 vfs_context_t ctx = vfs_context_current();
2350 vnode_t devvp;
2351 int result;
2352
2353 if (!vfs_context_issuser(ctx)) {
2354 return EPERM;
2355 }
2356
2357 if (imgsrc_rootvnodes[0] == NULL) {
2358 return ENOENT;
2359 }
2360
2361 result = vnode_getwithref(imgsrc_rootvnodes[0]);
2362 if (result != 0) {
2363 return result;
2364 }
2365
2366 devvp = vnode_mount(imgsrc_rootvnodes[0])->mnt_devvp;
2367 result = vnode_getwithref(devvp);
2368 if (result != 0) {
2369 goto out;
2370 }
2371
2372 result = sysctl_io_number(req, vnode_specrdev(devvp), sizeof(dev_t), NULL, NULL);
2373
2374 vnode_put(devvp);
2375 out:
2376 vnode_put(imgsrc_rootvnodes[0]);
2377 return result;
2378 }
2379
2380 SYSCTL_PROC(_kern, OID_AUTO, imgsrcdev,
2381 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2382 0, 0, sysctl_imgsrcdev, "I", "");
2383
2384 STATIC int
2385 sysctl_imgsrcinfo
2386 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2387 {
2388 int error;
2389 struct imgsrc_info info[MAX_IMAGEBOOT_NESTING] = {}; /* 2 for now, no problem */
2390 uint32_t i;
2391 vnode_t rvp, devvp;
2392
2393 if (imgsrc_rootvnodes[0] == NULLVP) {
2394 return ENXIO;
2395 }
2396
2397 for (i = 0; i < MAX_IMAGEBOOT_NESTING; i++) {
2398 /*
2399 * Go get the root vnode.
2400 */
2401 rvp = imgsrc_rootvnodes[i];
2402 if (rvp == NULLVP) {
2403 break;
2404 }
2405
2406 error = vnode_get(rvp);
2407 if (error != 0) {
2408 return error;
2409 }
2410
2411 /*
2412 * For now, no getting at a non-local volume.
2413 */
2414 devvp = vnode_mount(rvp)->mnt_devvp;
2415 if (devvp == NULL) {
2416 vnode_put(rvp);
2417 return EINVAL;
2418 }
2419
2420 error = vnode_getwithref(devvp);
2421 if (error != 0) {
2422 vnode_put(rvp);
2423 return error;
2424 }
2425
2426 /*
2427 * Fill in info.
2428 */
2429 info[i].ii_dev = vnode_specrdev(devvp);
2430 info[i].ii_flags = 0;
2431 info[i].ii_height = i;
2432 bzero(info[i].ii_reserved, sizeof(info[i].ii_reserved));
2433
2434 vnode_put(devvp);
2435 vnode_put(rvp);
2436 }
2437
2438 return sysctl_io_opaque(req, info, i * sizeof(info[0]), NULL);
2439 }
2440
2441 SYSCTL_PROC(_kern, OID_AUTO, imgsrcinfo,
2442 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_LOCKED,
2443 0, 0, sysctl_imgsrcinfo, "I", "");
2444
2445 #endif /* CONFIG_IMGSRC_ACCESS */
2446
2447
2448 SYSCTL_DECL(_kern_timer);
2449 SYSCTL_NODE(_kern, OID_AUTO, timer, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "timer");
2450
2451
2452 SYSCTL_INT(_kern_timer, OID_AUTO, coalescing_enabled,
2453 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
2454 &mach_timer_coalescing_enabled, 0, "");
2455
2456 SYSCTL_QUAD(_kern_timer, OID_AUTO, deadline_tracking_bin_1,
2457 CTLFLAG_RW | CTLFLAG_LOCKED,
2458 &timer_deadline_tracking_bin_1, "");
2459 SYSCTL_QUAD(_kern_timer, OID_AUTO, deadline_tracking_bin_2,
2460 CTLFLAG_RW | CTLFLAG_LOCKED,
2461 &timer_deadline_tracking_bin_2, "");
2462
2463 SYSCTL_DECL(_kern_timer_longterm);
2464 SYSCTL_NODE(_kern_timer, OID_AUTO, longterm, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "longterm");
2465
2466
2467 /* Must match definition in osfmk/kern/timer_call.c */
2468 enum {
2469 THRESHOLD, QCOUNT,
2470 ENQUEUES, DEQUEUES, ESCALATES, SCANS, PREEMPTS,
2471 LATENCY, LATENCY_MIN, LATENCY_MAX, SCAN_LIMIT, SCAN_INTERVAL, PAUSES
2472 };
2473 extern uint64_t timer_sysctl_get(int);
2474 extern int timer_sysctl_set(int, uint64_t);
2475
2476 STATIC int
2477 sysctl_timer
2478 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2479 {
2480 int oid = (int)arg1;
2481 uint64_t value = timer_sysctl_get(oid);
2482 uint64_t new_value;
2483 int error;
2484 int changed;
2485
2486 error = sysctl_io_number(req, value, sizeof(value), &new_value, &changed);
2487 if (changed) {
2488 error = timer_sysctl_set(oid, new_value);
2489 }
2490
2491 return error;
2492 }
2493
2494 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, threshold,
2495 CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
2496 (void *) THRESHOLD, 0, sysctl_timer, "Q", "");
2497 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scan_limit,
2498 CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
2499 (void *) SCAN_LIMIT, 0, sysctl_timer, "Q", "");
2500 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scan_interval,
2501 CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
2502 (void *) SCAN_INTERVAL, 0, sysctl_timer, "Q", "");
2503
2504 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, qlen,
2505 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2506 (void *) QCOUNT, 0, sysctl_timer, "Q", "");
2507 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scan_pauses,
2508 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2509 (void *) PAUSES, 0, sysctl_timer, "Q", "");
2510
2511 #if DEBUG
2512 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, enqueues,
2513 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2514 (void *) ENQUEUES, 0, sysctl_timer, "Q", "");
2515 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, dequeues,
2516 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2517 (void *) DEQUEUES, 0, sysctl_timer, "Q", "");
2518 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, escalates,
2519 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2520 (void *) ESCALATES, 0, sysctl_timer, "Q", "");
2521 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scans,
2522 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2523 (void *) SCANS, 0, sysctl_timer, "Q", "");
2524 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, preempts,
2525 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2526 (void *) PREEMPTS, 0, sysctl_timer, "Q", "");
2527 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, latency,
2528 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2529 (void *) LATENCY, 0, sysctl_timer, "Q", "");
2530 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, latency_min,
2531 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2532 (void *) LATENCY_MIN, 0, sysctl_timer, "Q", "");
2533 SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, latency_max,
2534 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2535 (void *) LATENCY_MAX, 0, sysctl_timer, "Q", "");
2536 #endif /* DEBUG */
2537
2538 STATIC int
2539 sysctl_usrstack
2540 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2541 {
2542 return sysctl_io_number(req, (int)req->p->user_stack, sizeof(int), NULL, NULL);
2543 }
2544
2545 SYSCTL_PROC(_kern, KERN_USRSTACK32, usrstack,
2546 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
2547 0, 0, sysctl_usrstack, "I", "");
2548
2549 STATIC int
2550 sysctl_usrstack64
2551 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2552 {
2553 return sysctl_io_number(req, req->p->user_stack, sizeof(req->p->user_stack), NULL, NULL);
2554 }
2555
2556 SYSCTL_PROC(_kern, KERN_USRSTACK64, usrstack64,
2557 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
2558 0, 0, sysctl_usrstack64, "Q", "");
2559
2560 #if CONFIG_COREDUMP
2561
2562 SYSCTL_STRING(_kern, KERN_COREFILE, corefile,
2563 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2564 corefilename, sizeof(corefilename), "");
2565
2566 STATIC int
2567 sysctl_coredump
2568 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2569 {
2570 #ifdef SECURE_KERNEL
2571 (void)req;
2572 return ENOTSUP;
2573 #else
2574 int new_value, changed;
2575 int error = sysctl_io_number(req, do_coredump, sizeof(int), &new_value, &changed);
2576 if (changed) {
2577 if ((new_value == 0) || (new_value == 1)) {
2578 do_coredump = new_value;
2579 } else {
2580 error = EINVAL;
2581 }
2582 }
2583 return error;
2584 #endif
2585 }
2586
2587 SYSCTL_PROC(_kern, KERN_COREDUMP, coredump,
2588 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2589 0, 0, sysctl_coredump, "I", "");
2590
2591 STATIC int
2592 sysctl_suid_coredump
2593 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2594 {
2595 #ifdef SECURE_KERNEL
2596 (void)req;
2597 return ENOTSUP;
2598 #else
2599 int new_value, changed;
2600 int error = sysctl_io_number(req, sugid_coredump, sizeof(int), &new_value, &changed);
2601 if (changed) {
2602 if ((new_value == 0) || (new_value == 1)) {
2603 sugid_coredump = new_value;
2604 } else {
2605 error = EINVAL;
2606 }
2607 }
2608 return error;
2609 #endif
2610 }
2611
2612 SYSCTL_PROC(_kern, KERN_SUGID_COREDUMP, sugid_coredump,
2613 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2614 0, 0, sysctl_suid_coredump, "I", "");
2615
2616 #endif /* CONFIG_COREDUMP */
2617
2618 STATIC int
2619 sysctl_delayterm
2620 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2621 {
2622 struct proc *p = req->p;
2623 int new_value, changed;
2624 int error = sysctl_io_number(req, (req->p->p_lflag & P_LDELAYTERM)? 1: 0, sizeof(int), &new_value, &changed);
2625 if (changed) {
2626 proc_lock(p);
2627 if (new_value) {
2628 req->p->p_lflag |= P_LDELAYTERM;
2629 } else {
2630 req->p->p_lflag &= ~P_LDELAYTERM;
2631 }
2632 proc_unlock(p);
2633 }
2634 return error;
2635 }
2636
2637 SYSCTL_PROC(_kern, KERN_PROCDELAYTERM, delayterm,
2638 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
2639 0, 0, sysctl_delayterm, "I", "");
2640
2641
2642 STATIC int
2643 sysctl_rage_vnode
2644 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2645 {
2646 struct proc *p = req->p;
2647 struct uthread *ut;
2648 int new_value, old_value, changed;
2649 int error;
2650
2651 ut = get_bsdthread_info(current_thread());
2652
2653 if (ut->uu_flag & UT_RAGE_VNODES) {
2654 old_value = KERN_RAGE_THREAD;
2655 } else if (p->p_lflag & P_LRAGE_VNODES) {
2656 old_value = KERN_RAGE_PROC;
2657 } else {
2658 old_value = 0;
2659 }
2660
2661 error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed);
2662
2663 if ((error == 0) && (changed != 0)) {
2664 switch (new_value) {
2665 case KERN_RAGE_PROC:
2666 proc_lock(p);
2667 p->p_lflag |= P_LRAGE_VNODES;
2668 proc_unlock(p);
2669 break;
2670 case KERN_UNRAGE_PROC:
2671 proc_lock(p);
2672 p->p_lflag &= ~P_LRAGE_VNODES;
2673 proc_unlock(p);
2674 break;
2675
2676 case KERN_RAGE_THREAD:
2677 ut->uu_flag |= UT_RAGE_VNODES;
2678 break;
2679 case KERN_UNRAGE_THREAD:
2680 ut = get_bsdthread_info(current_thread());
2681 ut->uu_flag &= ~UT_RAGE_VNODES;
2682 break;
2683 }
2684 }
2685 return error;
2686 }
2687
2688 SYSCTL_PROC(_kern, KERN_RAGEVNODE, rage_vnode,
2689 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED,
2690 0, 0, sysctl_rage_vnode, "I", "");
2691
2692 /* XXX until filecoordinationd fixes a bit of inverted logic. */
2693 STATIC int
2694 sysctl_vfsnspace
2695 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2696 {
2697 int old_value = 0, new_value, changed;
2698
2699 return sysctl_io_number(req, old_value, sizeof(int), &new_value,
2700 &changed);
2701 }
2702
2703 SYSCTL_PROC(_kern, OID_AUTO, vfsnspace,
2704 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED,
2705 0, 0, sysctl_vfsnspace, "I", "");
2706
2707 /* XXX move this interface into libproc and remove this sysctl */
2708 STATIC int
2709 sysctl_setthread_cpupercent
2710 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2711 {
2712 int new_value, old_value;
2713 int error = 0;
2714 kern_return_t kret = KERN_SUCCESS;
2715 uint8_t percent = 0;
2716 int ms_refill = 0;
2717
2718 if (!req->newptr) {
2719 return 0;
2720 }
2721
2722 old_value = 0;
2723
2724 if ((error = sysctl_io_number(req, old_value, sizeof(old_value), &new_value, NULL)) != 0) {
2725 return error;
2726 }
2727
2728 percent = new_value & 0xff; /* low 8 bytes for perent */
2729 ms_refill = (new_value >> 8) & 0xffffff; /* upper 24bytes represent ms refill value */
2730 if (percent > 100) {
2731 return EINVAL;
2732 }
2733
2734 /*
2735 * If the caller is specifying a percentage of 0, this will unset the CPU limit, if present.
2736 */
2737 if ((kret = thread_set_cpulimit(THREAD_CPULIMIT_BLOCK, percent, ms_refill * (int)NSEC_PER_MSEC)) != 0) {
2738 return EIO;
2739 }
2740
2741 return 0;
2742 }
2743
2744 SYSCTL_PROC(_kern, OID_AUTO, setthread_cpupercent,
2745 CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_ANYBODY,
2746 0, 0, sysctl_setthread_cpupercent, "I", "set thread cpu percentage limit");
2747
2748
2749 STATIC int
2750 sysctl_kern_check_openevt
2751 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2752 {
2753 struct proc *p = req->p;
2754 int new_value, old_value, changed;
2755 int error;
2756
2757 if (p->p_flag & P_CHECKOPENEVT) {
2758 old_value = KERN_OPENEVT_PROC;
2759 } else {
2760 old_value = 0;
2761 }
2762
2763 error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed);
2764
2765 if ((error == 0) && (changed != 0)) {
2766 switch (new_value) {
2767 case KERN_OPENEVT_PROC:
2768 OSBitOrAtomic(P_CHECKOPENEVT, &p->p_flag);
2769 break;
2770
2771 case KERN_UNOPENEVT_PROC:
2772 OSBitAndAtomic(~((uint32_t)P_CHECKOPENEVT), &p->p_flag);
2773 break;
2774
2775 default:
2776 error = EINVAL;
2777 }
2778 }
2779 return error;
2780 }
2781
2782 SYSCTL_PROC(_kern, KERN_CHECKOPENEVT, check_openevt, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED,
2783 0, 0, sysctl_kern_check_openevt, "I", "set the per-process check-open-evt flag");
2784
2785
2786 #if DEVELOPMENT || DEBUG
2787 STATIC int
2788 sysctl_nx
2789 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2790 {
2791 #ifdef SECURE_KERNEL
2792 (void)req;
2793 return ENOTSUP;
2794 #else
2795 int new_value, changed;
2796 int error;
2797
2798 error = sysctl_io_number(req, nx_enabled, sizeof(nx_enabled), &new_value, &changed);
2799 if (error) {
2800 return error;
2801 }
2802
2803 if (changed) {
2804 #if defined(__x86_64__)
2805 /*
2806 * Only allow setting if NX is supported on the chip
2807 */
2808 if (!(cpuid_extfeatures() & CPUID_EXTFEATURE_XD)) {
2809 return ENOTSUP;
2810 }
2811 #endif
2812 nx_enabled = new_value;
2813 }
2814 return error;
2815 #endif /* SECURE_KERNEL */
2816 }
2817 #endif
2818
2819 #if DEVELOPMENT || DEBUG
2820 SYSCTL_PROC(_kern, KERN_NX_PROTECTION, nx,
2821 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
2822 0, 0, sysctl_nx, "I", "");
2823 #endif
2824
2825 STATIC int
2826 sysctl_loadavg
2827 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
2828 {
2829 if (proc_is64bit(req->p)) {
2830 struct user64_loadavg loadinfo64 = {};
2831 fill_loadavg64(&averunnable, &loadinfo64);
2832 return sysctl_io_opaque(req, &loadinfo64, sizeof(loadinfo64), NULL);
2833 } else {
2834 struct user32_loadavg loadinfo32 = {};
2835 fill_loadavg32(&averunnable, &loadinfo32);
2836 return sysctl_io_opaque(req, &loadinfo32, sizeof(loadinfo32), NULL);
2837 }
2838 }
2839
2840 SYSCTL_PROC(_vm, VM_LOADAVG, loadavg,
2841 CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
2842 0, 0, sysctl_loadavg, "S,loadavg", "");
2843
2844 /*
2845 * Note: Thread safe; vm_map_lock protects in vm_toggle_entry_reuse()
2846 */
2847 STATIC int
2848 sysctl_vm_toggle_address_reuse(__unused struct sysctl_oid *oidp, __unused void *arg1,
2849 __unused int arg2, struct sysctl_req *req)
2850 {
2851 int old_value = 0, new_value = 0, error = 0;
2852
2853 if (vm_toggle_entry_reuse( VM_TOGGLE_GETVALUE, &old_value )) {
2854 return error;
2855 }
2856 error = sysctl_io_number(req, old_value, sizeof(int), &new_value, NULL);
2857 if (!error) {
2858 return vm_toggle_entry_reuse(new_value, NULL);
2859 }
2860 return error;
2861 }
2862
2863 SYSCTL_PROC(_debug, OID_AUTO, toggle_address_reuse, CTLFLAG_ANYBODY | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_vm_toggle_address_reuse, "I", "");
2864
2865 #ifdef CONFIG_XNUPOST
2866
2867 extern int xnupost_export_testdata(void *outp, uint32_t size, uint32_t *lenp);
2868 extern uint32_t xnupost_get_estimated_testdata_size(void);
2869
2870 extern int xnupost_reset_all_tests(void);
2871
2872 STATIC int
2873 sysctl_handle_xnupost_get_tests SYSCTL_HANDLER_ARGS
2874 {
2875 /* fixup unused arguments warnings */
2876 __unused int _oa2 = arg2;
2877 __unused void * _oa1 = arg1;
2878 __unused struct sysctl_oid * _oidp = oidp;
2879
2880 int error = 0;
2881 user_addr_t oldp = 0;
2882 user_addr_t newp = 0;
2883 uint32_t usedbytes = 0;
2884
2885 oldp = req->oldptr;
2886 newp = req->newptr;
2887
2888 if (newp) {
2889 return ENOTSUP;
2890 }
2891
2892 if ((void *)oldp == NULL) {
2893 /* return estimated size for second call where info can be placed */
2894 req->oldidx = xnupost_get_estimated_testdata_size();
2895 } else {
2896 error = xnupost_export_testdata((void *)oldp, req->oldlen, &usedbytes);
2897 req->oldidx = usedbytes;
2898 }
2899
2900 return error;
2901 }
2902
2903 SYSCTL_PROC(_debug,
2904 OID_AUTO,
2905 xnupost_get_tests,
2906 CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_LOCKED,
2907 0,
2908 0,
2909 sysctl_handle_xnupost_get_tests,
2910 "-",
2911 "read xnupost test data in kernel");
2912
2913 STATIC int
2914 sysctl_debug_xnupost_ctl SYSCTL_HANDLER_ARGS
2915 {
2916 /* fixup unused arguments warnings */
2917 __unused int _oa2 = arg2;
2918 __unused void * _oa1 = arg1;
2919 __unused struct sysctl_oid * _oidp = oidp;
2920
2921 #define ARRCOUNT 4
2922 /*
2923 * INPUT: ACTION, PARAM1, PARAM2, PARAM3
2924 * OUTPUT: RESULTCODE, ADDITIONAL DATA
2925 */
2926 int32_t outval[ARRCOUNT] = {0};
2927 int32_t input[ARRCOUNT] = {0};
2928 int32_t out_size = sizeof(outval);
2929 int32_t in_size = sizeof(input);
2930 int error = 0;
2931
2932 /* if this is NULL call to find out size, send out size info */
2933 if (!req->newptr) {
2934 goto out;
2935 }
2936
2937 /* pull in provided value from userspace */
2938 error = SYSCTL_IN(req, &input[0], in_size);
2939 if (error) {
2940 return error;
2941 }
2942
2943 if (input[0] == XTCTL_RESET_TESTDATA) {
2944 outval[0] = xnupost_reset_all_tests();
2945 goto out;
2946 }
2947
2948 out:
2949 error = SYSCTL_OUT(req, &outval[0], out_size);
2950 return error;
2951 }
2952
2953 SYSCTL_PROC(_debug,
2954 OID_AUTO,
2955 xnupost_testctl,
2956 CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_LOCKED,
2957 0,
2958 0,
2959 sysctl_debug_xnupost_ctl,
2960 "I",
2961 "xnupost control for kernel testing");
2962
2963 extern void test_oslog_handleOSLogCtl(int32_t * in, int32_t * out, int32_t arraycount);
2964
2965 STATIC int
2966 sysctl_debug_test_oslog_ctl(__unused struct sysctl_oid * oidp, __unused void * arg1, __unused int arg2, struct sysctl_req * req)
2967 {
2968 #define ARRCOUNT 4
2969 int32_t outval[ARRCOUNT] = {0};
2970 int32_t input[ARRCOUNT] = {0};
2971 int32_t size_outval = sizeof(outval);
2972 int32_t size_inval = sizeof(input);
2973 int32_t error;
2974
2975 /* if this is NULL call to find out size, send out size info */
2976 if (!req->newptr) {
2977 error = SYSCTL_OUT(req, &outval[0], size_outval);
2978 return error;
2979 }
2980
2981 /* pull in provided value from userspace */
2982 error = SYSCTL_IN(req, &input[0], size_inval);
2983 if (error) {
2984 return error;
2985 }
2986
2987 test_oslog_handleOSLogCtl(input, outval, ARRCOUNT);
2988
2989 error = SYSCTL_OUT(req, &outval[0], size_outval);
2990
2991 return error;
2992 }
2993
2994 SYSCTL_PROC(_debug,
2995 OID_AUTO,
2996 test_OSLogCtl,
2997 CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_LOCKED,
2998 0,
2999 0,
3000 sysctl_debug_test_oslog_ctl,
3001 "I",
3002 "testing oslog in kernel");
3003
3004 #include <mach/task.h>
3005 #include <mach/semaphore.h>
3006
3007 extern lck_grp_t * sysctl_debug_test_stackshot_owner_grp; /* used for both mutexes and rwlocks */
3008 extern lck_mtx_t * sysctl_debug_test_stackshot_owner_init_mtx; /* used to protect lck_*_init */
3009
3010 /* This is a sysctl for testing collection of owner info on a lock in kernel space. A multi-threaded
3011 * test from userland sets this sysctl in such a way that a thread blocks in kernel mode, and a
3012 * stackshot is taken to see if the owner of the lock can be identified.
3013 *
3014 * We can't return to userland with a kernel lock held, so be sure to unlock before we leave.
3015 * the semaphores allow us to artificially create cases where the lock is being held and the
3016 * thread is hanging / taking a long time to do something. */
3017
3018 volatile char sysctl_debug_test_stackshot_mtx_inited = 0;
3019 semaphore_t sysctl_debug_test_stackshot_mutex_sem;
3020 lck_mtx_t sysctl_debug_test_stackshot_owner_lck;
3021
3022 #define SYSCTL_DEBUG_MTX_ACQUIRE_WAIT 1
3023 #define SYSCTL_DEBUG_MTX_ACQUIRE_NOWAIT 2
3024 #define SYSCTL_DEBUG_MTX_SIGNAL 3
3025 #define SYSCTL_DEBUG_MTX_TEARDOWN 4
3026
3027 STATIC int
3028 sysctl_debug_test_stackshot_mutex_owner(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3029 {
3030 long long option = -1;
3031 /* if the user tries to read the sysctl, we tell them what the address of the lock is (to test against stackshot's output) */
3032 long long mtx_unslid_addr = (long long)VM_KERNEL_UNSLIDE_OR_PERM(&sysctl_debug_test_stackshot_owner_lck);
3033 int error = sysctl_io_number(req, mtx_unslid_addr, sizeof(long long), (void*)&option, NULL);
3034
3035 lck_mtx_lock(sysctl_debug_test_stackshot_owner_init_mtx);
3036 if (!sysctl_debug_test_stackshot_mtx_inited) {
3037 lck_mtx_init(&sysctl_debug_test_stackshot_owner_lck,
3038 sysctl_debug_test_stackshot_owner_grp,
3039 LCK_ATTR_NULL);
3040 semaphore_create(kernel_task,
3041 &sysctl_debug_test_stackshot_mutex_sem,
3042 SYNC_POLICY_FIFO, 0);
3043 sysctl_debug_test_stackshot_mtx_inited = 1;
3044 }
3045 lck_mtx_unlock(sysctl_debug_test_stackshot_owner_init_mtx);
3046
3047 if (!error) {
3048 switch (option) {
3049 case SYSCTL_DEBUG_MTX_ACQUIRE_NOWAIT:
3050 lck_mtx_lock(&sysctl_debug_test_stackshot_owner_lck);
3051 lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_lck);
3052 break;
3053 case SYSCTL_DEBUG_MTX_ACQUIRE_WAIT:
3054 lck_mtx_lock(&sysctl_debug_test_stackshot_owner_lck);
3055 semaphore_wait(sysctl_debug_test_stackshot_mutex_sem);
3056 lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_lck);
3057 break;
3058 case SYSCTL_DEBUG_MTX_SIGNAL:
3059 semaphore_signal(sysctl_debug_test_stackshot_mutex_sem);
3060 break;
3061 case SYSCTL_DEBUG_MTX_TEARDOWN:
3062 lck_mtx_lock(sysctl_debug_test_stackshot_owner_init_mtx);
3063
3064 lck_mtx_destroy(&sysctl_debug_test_stackshot_owner_lck,
3065 sysctl_debug_test_stackshot_owner_grp);
3066 semaphore_destroy(kernel_task,
3067 sysctl_debug_test_stackshot_mutex_sem);
3068 sysctl_debug_test_stackshot_mtx_inited = 0;
3069
3070 lck_mtx_unlock(sysctl_debug_test_stackshot_owner_init_mtx);
3071 break;
3072 case -1: /* user just wanted to read the value, so do nothing */
3073 break;
3074 default:
3075 error = EINVAL;
3076 break;
3077 }
3078 }
3079 return error;
3080 }
3081
3082 /* we can't return to userland with a kernel rwlock held, so be sure to unlock before we leave.
3083 * the semaphores allow us to artificially create cases where the lock is being held and the
3084 * thread is hanging / taking a long time to do something. */
3085
3086 SYSCTL_PROC(_debug,
3087 OID_AUTO,
3088 test_MutexOwnerCtl,
3089 CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
3090 0,
3091 0,
3092 sysctl_debug_test_stackshot_mutex_owner,
3093 "-",
3094 "Testing mutex owner in kernel");
3095
3096 volatile char sysctl_debug_test_stackshot_rwlck_inited = 0;
3097 lck_rw_t sysctl_debug_test_stackshot_owner_rwlck;
3098 semaphore_t sysctl_debug_test_stackshot_rwlck_sem;
3099
3100 #define SYSCTL_DEBUG_KRWLCK_RACQUIRE_NOWAIT 1
3101 #define SYSCTL_DEBUG_KRWLCK_RACQUIRE_WAIT 2
3102 #define SYSCTL_DEBUG_KRWLCK_WACQUIRE_NOWAIT 3
3103 #define SYSCTL_DEBUG_KRWLCK_WACQUIRE_WAIT 4
3104 #define SYSCTL_DEBUG_KRWLCK_SIGNAL 5
3105 #define SYSCTL_DEBUG_KRWLCK_TEARDOWN 6
3106
3107 STATIC int
3108 sysctl_debug_test_stackshot_rwlck_owner(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3109 {
3110 long long option = -1;
3111 /* if the user tries to read the sysctl, we tell them what the address of the lock is
3112 * (to test against stackshot's output) */
3113 long long rwlck_unslid_addr = (long long)VM_KERNEL_UNSLIDE_OR_PERM(&sysctl_debug_test_stackshot_owner_rwlck);
3114 int error = sysctl_io_number(req, rwlck_unslid_addr, sizeof(long long), (void*)&option, NULL);
3115
3116 lck_mtx_lock(sysctl_debug_test_stackshot_owner_init_mtx);
3117 if (!sysctl_debug_test_stackshot_rwlck_inited) {
3118 lck_rw_init(&sysctl_debug_test_stackshot_owner_rwlck,
3119 sysctl_debug_test_stackshot_owner_grp,
3120 LCK_ATTR_NULL);
3121 semaphore_create(kernel_task,
3122 &sysctl_debug_test_stackshot_rwlck_sem,
3123 SYNC_POLICY_FIFO,
3124 0);
3125 sysctl_debug_test_stackshot_rwlck_inited = 1;
3126 }
3127 lck_mtx_unlock(sysctl_debug_test_stackshot_owner_init_mtx);
3128
3129 if (!error) {
3130 switch (option) {
3131 case SYSCTL_DEBUG_KRWLCK_RACQUIRE_NOWAIT:
3132 lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED);
3133 lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED);
3134 break;
3135 case SYSCTL_DEBUG_KRWLCK_RACQUIRE_WAIT:
3136 lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED);
3137 semaphore_wait(sysctl_debug_test_stackshot_rwlck_sem);
3138 lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED);
3139 break;
3140 case SYSCTL_DEBUG_KRWLCK_WACQUIRE_NOWAIT:
3141 lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE);
3142 lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE);
3143 break;
3144 case SYSCTL_DEBUG_KRWLCK_WACQUIRE_WAIT:
3145 lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE);
3146 semaphore_wait(sysctl_debug_test_stackshot_rwlck_sem);
3147 lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE);
3148 break;
3149 case SYSCTL_DEBUG_KRWLCK_SIGNAL:
3150 semaphore_signal(sysctl_debug_test_stackshot_rwlck_sem);
3151 break;
3152 case SYSCTL_DEBUG_KRWLCK_TEARDOWN:
3153 lck_mtx_lock(sysctl_debug_test_stackshot_owner_init_mtx);
3154
3155 lck_rw_destroy(&sysctl_debug_test_stackshot_owner_rwlck,
3156 sysctl_debug_test_stackshot_owner_grp);
3157 semaphore_destroy(kernel_task,
3158 sysctl_debug_test_stackshot_rwlck_sem);
3159 sysctl_debug_test_stackshot_rwlck_inited = 0;
3160
3161 lck_mtx_unlock(sysctl_debug_test_stackshot_owner_init_mtx);
3162 break;
3163 case -1: /* user just wanted to read the value, so do nothing */
3164 break;
3165 default:
3166 error = EINVAL;
3167 break;
3168 }
3169 }
3170 return error;
3171 }
3172
3173
3174 SYSCTL_PROC(_debug,
3175 OID_AUTO,
3176 test_RWLockOwnerCtl,
3177 CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
3178 0,
3179 0,
3180 sysctl_debug_test_stackshot_rwlck_owner,
3181 "-",
3182 "Testing rwlock owner in kernel");
3183 #endif /* !CONFIG_XNUPOST */
3184
3185 STATIC int
3186 sysctl_swapusage
3187 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3188 {
3189 int error;
3190 uint64_t swap_total;
3191 uint64_t swap_avail;
3192 vm_size_t swap_pagesize;
3193 boolean_t swap_encrypted;
3194 struct xsw_usage xsu = {};
3195
3196 error = macx_swapinfo(&swap_total,
3197 &swap_avail,
3198 &swap_pagesize,
3199 &swap_encrypted);
3200 if (error) {
3201 return error;
3202 }
3203
3204 xsu.xsu_total = swap_total;
3205 xsu.xsu_avail = swap_avail;
3206 xsu.xsu_used = swap_total - swap_avail;
3207 xsu.xsu_pagesize = swap_pagesize;
3208 xsu.xsu_encrypted = swap_encrypted;
3209 return sysctl_io_opaque(req, &xsu, sizeof(xsu), NULL);
3210 }
3211
3212
3213
3214 SYSCTL_PROC(_vm, VM_SWAPUSAGE, swapusage,
3215 CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
3216 0, 0, sysctl_swapusage, "S,xsw_usage", "");
3217
3218 #if CONFIG_FREEZE
3219 extern void vm_page_reactivate_all_throttled(void);
3220 extern void memorystatus_disable_freeze(void);
3221
3222 static int
3223 sysctl_freeze_enabled SYSCTL_HANDLER_ARGS
3224 {
3225 #pragma unused(arg1, arg2)
3226 int error, val = memorystatus_freeze_enabled ? 1 : 0;
3227 boolean_t disabled;
3228
3229 error = sysctl_handle_int(oidp, &val, 0, req);
3230 if (error || !req->newptr) {
3231 return error;
3232 }
3233
3234 if (!VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
3235 //assert(req->newptr);
3236 printf("Failed attempt to set vm.freeze_enabled sysctl\n");
3237 return EINVAL;
3238 }
3239
3240 /*
3241 * If freeze is being disabled, we need to move dirty pages out from the throttle to the active queue.
3242 */
3243 disabled = (!val && memorystatus_freeze_enabled);
3244
3245 memorystatus_freeze_enabled = val ? TRUE : FALSE;
3246
3247 if (disabled) {
3248 vm_page_reactivate_all_throttled();
3249 memorystatus_disable_freeze();
3250 }
3251
3252 return 0;
3253 }
3254
3255 SYSCTL_PROC(_vm, OID_AUTO, freeze_enabled, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY, &memorystatus_freeze_enabled, 0, sysctl_freeze_enabled, "I", "");
3256 #endif /* CONFIG_FREEZE */
3257
3258 #if DEVELOPMENT || DEBUG
3259 extern int vm_num_swap_files_config;
3260 extern int vm_num_swap_files;
3261 extern lck_mtx_t vm_swap_data_lock;
3262 #define VM_MAX_SWAP_FILE_NUM 100
3263
3264 static int
3265 sysctl_vm_config_num_swap_files SYSCTL_HANDLER_ARGS
3266 {
3267 #pragma unused(arg1, arg2)
3268 int error = 0, val = vm_num_swap_files_config;
3269
3270 error = sysctl_handle_int(oidp, &val, 0, req);
3271 if (error || !req->newptr) {
3272 goto out;
3273 }
3274
3275 if (!VM_CONFIG_SWAP_IS_ACTIVE && !VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
3276 printf("Swap is disabled\n");
3277 error = EINVAL;
3278 goto out;
3279 }
3280
3281 lck_mtx_lock(&vm_swap_data_lock);
3282
3283 if (val < vm_num_swap_files) {
3284 printf("Cannot configure fewer swap files than already exist.\n");
3285 error = EINVAL;
3286 lck_mtx_unlock(&vm_swap_data_lock);
3287 goto out;
3288 }
3289
3290 if (val > VM_MAX_SWAP_FILE_NUM) {
3291 printf("Capping number of swap files to upper bound.\n");
3292 val = VM_MAX_SWAP_FILE_NUM;
3293 }
3294
3295 vm_num_swap_files_config = val;
3296 lck_mtx_unlock(&vm_swap_data_lock);
3297 out:
3298
3299 return 0;
3300 }
3301
3302 SYSCTL_PROC(_debug, OID_AUTO, num_swap_files_configured, CTLFLAG_ANYBODY | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_vm_config_num_swap_files, "I", "");
3303 #endif /* DEVELOPMENT || DEBUG */
3304
3305 /* this kernel does NOT implement shared_region_make_private_np() */
3306 SYSCTL_INT(_kern, KERN_SHREG_PRIVATIZABLE, shreg_private,
3307 CTLFLAG_RD | CTLFLAG_LOCKED,
3308 (int *)NULL, 0, "");
3309
3310 STATIC int
3311 fetch_process_cputype(
3312 proc_t cur_proc,
3313 int *name,
3314 u_int namelen,
3315 cpu_type_t *cputype)
3316 {
3317 proc_t p = PROC_NULL;
3318 int refheld = 0;
3319 cpu_type_t ret = 0;
3320 int error = 0;
3321
3322 if (namelen == 0) {
3323 p = cur_proc;
3324 } else if (namelen == 1) {
3325 p = proc_find(name[0]);
3326 if (p == NULL) {
3327 return EINVAL;
3328 }
3329 refheld = 1;
3330 } else {
3331 error = EINVAL;
3332 goto out;
3333 }
3334
3335 ret = cpu_type() & ~CPU_ARCH_MASK;
3336 if (IS_64BIT_PROCESS(p)) {
3337 ret |= CPU_ARCH_ABI64;
3338 }
3339
3340 *cputype = ret;
3341
3342 if (refheld != 0) {
3343 proc_rele(p);
3344 }
3345 out:
3346 return error;
3347 }
3348
3349 STATIC int
3350 sysctl_sysctl_native(__unused struct sysctl_oid *oidp, void *arg1, int arg2,
3351 struct sysctl_req *req)
3352 {
3353 int error;
3354 cpu_type_t proc_cputype = 0;
3355 if ((error = fetch_process_cputype(req->p, (int *)arg1, arg2, &proc_cputype)) != 0) {
3356 return error;
3357 }
3358 int res = 1;
3359 if ((proc_cputype & ~CPU_ARCH_MASK) != (cpu_type() & ~CPU_ARCH_MASK)) {
3360 res = 0;
3361 }
3362 return SYSCTL_OUT(req, &res, sizeof(res));
3363 }
3364 SYSCTL_PROC(_sysctl, OID_AUTO, proc_native, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sysctl_native, "I", "proc_native");
3365
3366 STATIC int
3367 sysctl_sysctl_cputype(__unused struct sysctl_oid *oidp, void *arg1, int arg2,
3368 struct sysctl_req *req)
3369 {
3370 int error;
3371 cpu_type_t proc_cputype = 0;
3372 if ((error = fetch_process_cputype(req->p, (int *)arg1, arg2, &proc_cputype)) != 0) {
3373 return error;
3374 }
3375 return SYSCTL_OUT(req, &proc_cputype, sizeof(proc_cputype));
3376 }
3377 SYSCTL_PROC(_sysctl, OID_AUTO, proc_cputype, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sysctl_cputype, "I", "proc_cputype");
3378
3379 STATIC int
3380 sysctl_safeboot
3381 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3382 {
3383 return sysctl_io_number(req, boothowto & RB_SAFEBOOT ? 1 : 0, sizeof(int), NULL, NULL);
3384 }
3385
3386 SYSCTL_PROC(_kern, KERN_SAFEBOOT, safeboot,
3387 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
3388 0, 0, sysctl_safeboot, "I", "");
3389
3390 STATIC int
3391 sysctl_singleuser
3392 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3393 {
3394 return sysctl_io_number(req, boothowto & RB_SINGLE ? 1 : 0, sizeof(int), NULL, NULL);
3395 }
3396
3397 SYSCTL_PROC(_kern, OID_AUTO, singleuser,
3398 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
3399 0, 0, sysctl_singleuser, "I", "");
3400
3401 STATIC int
3402 sysctl_minimalboot
3403 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3404 {
3405 return sysctl_io_number(req, minimalboot, sizeof(int), NULL, NULL);
3406 }
3407
3408 SYSCTL_PROC(_kern, OID_AUTO, minimalboot,
3409 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
3410 0, 0, sysctl_minimalboot, "I", "");
3411
3412 /*
3413 * Controls for debugging affinity sets - see osfmk/kern/affinity.c
3414 */
3415 extern boolean_t affinity_sets_enabled;
3416 extern int affinity_sets_mapping;
3417
3418 SYSCTL_INT(_kern, OID_AUTO, affinity_sets_enabled,
3419 CTLFLAG_RW | CTLFLAG_LOCKED, (int *) &affinity_sets_enabled, 0, "hinting enabled");
3420 SYSCTL_INT(_kern, OID_AUTO, affinity_sets_mapping,
3421 CTLFLAG_RW | CTLFLAG_LOCKED, &affinity_sets_mapping, 0, "mapping policy");
3422
3423 /*
3424 * Boolean indicating if KASLR is active.
3425 */
3426 STATIC int
3427 sysctl_slide
3428 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3429 {
3430 uint32_t slide;
3431
3432 slide = vm_kernel_slide ? 1 : 0;
3433
3434 return sysctl_io_number( req, slide, sizeof(int), NULL, NULL);
3435 }
3436
3437 SYSCTL_PROC(_kern, OID_AUTO, slide,
3438 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
3439 0, 0, sysctl_slide, "I", "");
3440
3441 /*
3442 * Limit on total memory users can wire.
3443 *
3444 * vm_global_user_wire_limit - system wide limit on wired memory from all processes combined.
3445 *
3446 * vm_per_task_user_wire_limit - per address space limit on wired memory. This puts a cap on the process's rlimit value.
3447 *
3448 * These values are initialized to reasonable defaults at boot time based on the available physical memory in
3449 * kmem_init().
3450 *
3451 * All values are in bytes.
3452 */
3453
3454 vm_map_size_t vm_global_user_wire_limit;
3455 vm_map_size_t vm_per_task_user_wire_limit;
3456 extern uint64_t max_mem;
3457
3458 /*
3459 * We used to have a global in the kernel called vm_global_no_user_wire_limit which was the inverse
3460 * of vm_global_user_wire_limit. But maintaining both of those is silly, and vm_global_user_wire_limit is the
3461 * real limit.
3462 * This function is for backwards compatibility with userspace
3463 * since we exposed the old global via a sysctl.
3464 */
3465 STATIC int
3466 sysctl_global_no_user_wire_amount(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3467 {
3468 vm_map_size_t old_value;
3469 vm_map_size_t new_value;
3470 int changed;
3471 int error;
3472
3473 old_value = max_mem - vm_global_user_wire_limit;
3474 error = sysctl_io_number(req, old_value, sizeof(vm_map_size_t), &new_value, &changed);
3475 if (changed) {
3476 if ((uint64_t)new_value > max_mem) {
3477 error = EINVAL;
3478 } else {
3479 vm_global_user_wire_limit = max_mem - new_value;
3480 }
3481 }
3482 return error;
3483 }
3484 /*
3485 * There needs to be a more automatic/elegant way to do this
3486 */
3487 #if defined(__ARM__)
3488 SYSCTL_INT(_vm, OID_AUTO, global_user_wire_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_global_user_wire_limit, 0, "");
3489 SYSCTL_INT(_vm, OID_AUTO, user_wire_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_per_task_user_wire_limit, 0, "");
3490 SYSCTL_PROC(_vm, OID_AUTO, global_no_user_wire_amount, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, &sysctl_global_no_user_wire_amount, "I", "");
3491 #else
3492 SYSCTL_QUAD(_vm, OID_AUTO, global_user_wire_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_global_user_wire_limit, "");
3493 SYSCTL_QUAD(_vm, OID_AUTO, user_wire_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_per_task_user_wire_limit, "");
3494 SYSCTL_PROC(_vm, OID_AUTO, global_no_user_wire_amount, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, &sysctl_global_no_user_wire_amount, "Q", "");
3495 #endif
3496
3497 #if DEVELOPMENT || DEBUG
3498 /* These sysyctls are used to test the wired limit. */
3499 extern unsigned int vm_page_wire_count;
3500 extern uint32_t vm_lopage_free_count;
3501 SYSCTL_INT(_vm, OID_AUTO, page_wire_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_wire_count, 0, "");
3502 SYSCTL_INT(_vm, OID_AUTO, lopage_free_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_lopage_free_count, 0, "");
3503 #endif /* DEVELOPMENT */
3504
3505 extern int vm_map_copy_overwrite_aligned_src_not_internal;
3506 extern int vm_map_copy_overwrite_aligned_src_not_symmetric;
3507 extern int vm_map_copy_overwrite_aligned_src_large;
3508 SYSCTL_INT(_vm, OID_AUTO, vm_copy_src_not_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_copy_overwrite_aligned_src_not_internal, 0, "");
3509 SYSCTL_INT(_vm, OID_AUTO, vm_copy_src_not_symmetric, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_copy_overwrite_aligned_src_not_symmetric, 0, "");
3510 SYSCTL_INT(_vm, OID_AUTO, vm_copy_src_large, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_copy_overwrite_aligned_src_large, 0, "");
3511
3512
3513 extern uint32_t vm_page_external_count;
3514
3515 SYSCTL_INT(_vm, OID_AUTO, vm_page_external_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_external_count, 0, "");
3516
3517 SYSCTL_INT(_vm, OID_AUTO, vm_page_filecache_min, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_filecache_min, 0, "");
3518 SYSCTL_INT(_vm, OID_AUTO, vm_page_xpmapped_min, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_xpmapped_min, 0, "");
3519
3520 #if DEVELOPMENT || DEBUG
3521 SYSCTL_INT(_vm, OID_AUTO, vm_page_filecache_min_divisor, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_filecache_min_divisor, 0, "");
3522 SYSCTL_INT(_vm, OID_AUTO, vm_page_xpmapped_min_divisor, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_xpmapped_min_divisor, 0, "");
3523 #endif
3524
3525 extern int vm_compressor_mode;
3526 extern int vm_compressor_is_active;
3527 extern int vm_compressor_available;
3528 extern uint32_t vm_ripe_target_age;
3529 extern uint32_t swapout_target_age;
3530 extern int64_t compressor_bytes_used;
3531 extern int64_t c_segment_input_bytes;
3532 extern int64_t c_segment_compressed_bytes;
3533 extern uint32_t compressor_eval_period_in_msecs;
3534 extern uint32_t compressor_sample_min_in_msecs;
3535 extern uint32_t compressor_sample_max_in_msecs;
3536 extern uint32_t compressor_thrashing_threshold_per_10msecs;
3537 extern uint32_t compressor_thrashing_min_per_10msecs;
3538 extern uint32_t vm_compressor_time_thread;
3539
3540 #if DEVELOPMENT || DEBUG
3541 extern uint32_t vm_compressor_minorcompact_threshold_divisor;
3542 extern uint32_t vm_compressor_majorcompact_threshold_divisor;
3543 extern uint32_t vm_compressor_unthrottle_threshold_divisor;
3544 extern uint32_t vm_compressor_catchup_threshold_divisor;
3545
3546 extern uint32_t vm_compressor_minorcompact_threshold_divisor_overridden;
3547 extern uint32_t vm_compressor_majorcompact_threshold_divisor_overridden;
3548 extern uint32_t vm_compressor_unthrottle_threshold_divisor_overridden;
3549 extern uint32_t vm_compressor_catchup_threshold_divisor_overridden;
3550
3551 extern vmct_stats_t vmct_stats;
3552
3553
3554 STATIC int
3555 sysctl_minorcompact_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3556 {
3557 int new_value, changed;
3558 int error = sysctl_io_number(req, vm_compressor_minorcompact_threshold_divisor, sizeof(int), &new_value, &changed);
3559
3560 if (changed) {
3561 vm_compressor_minorcompact_threshold_divisor = new_value;
3562 vm_compressor_minorcompact_threshold_divisor_overridden = 1;
3563 }
3564 return error;
3565 }
3566
3567 SYSCTL_PROC(_vm, OID_AUTO, compressor_minorcompact_threshold_divisor,
3568 CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
3569 0, 0, sysctl_minorcompact_threshold_divisor, "I", "");
3570
3571
3572 STATIC int
3573 sysctl_majorcompact_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3574 {
3575 int new_value, changed;
3576 int error = sysctl_io_number(req, vm_compressor_majorcompact_threshold_divisor, sizeof(int), &new_value, &changed);
3577
3578 if (changed) {
3579 vm_compressor_majorcompact_threshold_divisor = new_value;
3580 vm_compressor_majorcompact_threshold_divisor_overridden = 1;
3581 }
3582 return error;
3583 }
3584
3585 SYSCTL_PROC(_vm, OID_AUTO, compressor_majorcompact_threshold_divisor,
3586 CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
3587 0, 0, sysctl_majorcompact_threshold_divisor, "I", "");
3588
3589
3590 STATIC int
3591 sysctl_unthrottle_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3592 {
3593 int new_value, changed;
3594 int error = sysctl_io_number(req, vm_compressor_unthrottle_threshold_divisor, sizeof(int), &new_value, &changed);
3595
3596 if (changed) {
3597 vm_compressor_unthrottle_threshold_divisor = new_value;
3598 vm_compressor_unthrottle_threshold_divisor_overridden = 1;
3599 }
3600 return error;
3601 }
3602
3603 SYSCTL_PROC(_vm, OID_AUTO, compressor_unthrottle_threshold_divisor,
3604 CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
3605 0, 0, sysctl_unthrottle_threshold_divisor, "I", "");
3606
3607
3608 STATIC int
3609 sysctl_catchup_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3610 {
3611 int new_value, changed;
3612 int error = sysctl_io_number(req, vm_compressor_catchup_threshold_divisor, sizeof(int), &new_value, &changed);
3613
3614 if (changed) {
3615 vm_compressor_catchup_threshold_divisor = new_value;
3616 vm_compressor_catchup_threshold_divisor_overridden = 1;
3617 }
3618 return error;
3619 }
3620
3621 SYSCTL_PROC(_vm, OID_AUTO, compressor_catchup_threshold_divisor,
3622 CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
3623 0, 0, sysctl_catchup_threshold_divisor, "I", "");
3624 #endif
3625
3626
3627 SYSCTL_QUAD(_vm, OID_AUTO, compressor_input_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_input_bytes, "");
3628 SYSCTL_QUAD(_vm, OID_AUTO, compressor_compressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_compressed_bytes, "");
3629 SYSCTL_QUAD(_vm, OID_AUTO, compressor_bytes_used, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_bytes_used, "");
3630
3631 SYSCTL_INT(_vm, OID_AUTO, compressor_mode, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_compressor_mode, 0, "");
3632 SYSCTL_INT(_vm, OID_AUTO, compressor_is_active, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_compressor_is_active, 0, "");
3633 SYSCTL_INT(_vm, OID_AUTO, compressor_swapout_target_age, CTLFLAG_RD | CTLFLAG_LOCKED, &swapout_target_age, 0, "");
3634 SYSCTL_INT(_vm, OID_AUTO, compressor_available, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_compressor_available, 0, "");
3635
3636 SYSCTL_INT(_vm, OID_AUTO, vm_ripe_target_age_in_secs, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_ripe_target_age, 0, "");
3637
3638 SYSCTL_INT(_vm, OID_AUTO, compressor_eval_period_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_eval_period_in_msecs, 0, "");
3639 SYSCTL_INT(_vm, OID_AUTO, compressor_sample_min_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_sample_min_in_msecs, 0, "");
3640 SYSCTL_INT(_vm, OID_AUTO, compressor_sample_max_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_sample_max_in_msecs, 0, "");
3641 SYSCTL_INT(_vm, OID_AUTO, compressor_thrashing_threshold_per_10msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_thrashing_threshold_per_10msecs, 0, "");
3642 SYSCTL_INT(_vm, OID_AUTO, compressor_thrashing_min_per_10msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_thrashing_min_per_10msecs, 0, "");
3643
3644 SYSCTL_STRING(_vm, OID_AUTO, swapfileprefix, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, swapfilename, sizeof(swapfilename) - SWAPFILENAME_INDEX_LEN, "");
3645
3646 SYSCTL_INT(_vm, OID_AUTO, compressor_timing_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_time_thread, 0, "");
3647
3648 #if DEVELOPMENT || DEBUG
3649 SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_runtime0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_runtimes[0], "");
3650 SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_runtime1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_runtimes[1], "");
3651
3652 SYSCTL_QUAD(_vm, OID_AUTO, compressor_threads_total, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_cthreads_total, "");
3653
3654 SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_pages0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_pages[0], "");
3655 SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_pages1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_pages[1], "");
3656
3657 SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_iterations0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_iterations[0], "");
3658 SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_iterations1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_iterations[1], "");
3659
3660 SYSCTL_INT(_vm, OID_AUTO, compressor_thread_minpages0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_minpages[0], 0, "");
3661 SYSCTL_INT(_vm, OID_AUTO, compressor_thread_minpages1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_minpages[1], 0, "");
3662
3663 SYSCTL_INT(_vm, OID_AUTO, compressor_thread_maxpages0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_maxpages[0], 0, "");
3664 SYSCTL_INT(_vm, OID_AUTO, compressor_thread_maxpages1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_maxpages[1], 0, "");
3665
3666 #endif
3667
3668 SYSCTL_QUAD(_vm, OID_AUTO, lz4_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_compressions, "");
3669 SYSCTL_QUAD(_vm, OID_AUTO, lz4_compression_failures, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_compression_failures, "");
3670 SYSCTL_QUAD(_vm, OID_AUTO, lz4_compressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_compressed_bytes, "");
3671 SYSCTL_QUAD(_vm, OID_AUTO, lz4_wk_compression_delta, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_wk_compression_delta, "");
3672 SYSCTL_QUAD(_vm, OID_AUTO, lz4_wk_compression_negative_delta, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_wk_compression_negative_delta, "");
3673
3674 SYSCTL_QUAD(_vm, OID_AUTO, lz4_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_decompressions, "");
3675 SYSCTL_QUAD(_vm, OID_AUTO, lz4_decompressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_decompressed_bytes, "");
3676
3677 SYSCTL_QUAD(_vm, OID_AUTO, uc_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.uc_decompressions, "");
3678
3679 SYSCTL_QUAD(_vm, OID_AUTO, wk_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressions, "");
3680
3681 SYSCTL_QUAD(_vm, OID_AUTO, wk_catime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_cabstime, "");
3682
3683 SYSCTL_QUAD(_vm, OID_AUTO, wkh_catime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_cabstime, "");
3684 SYSCTL_QUAD(_vm, OID_AUTO, wkh_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_compressions, "");
3685
3686 SYSCTL_QUAD(_vm, OID_AUTO, wks_catime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_cabstime, "");
3687 SYSCTL_QUAD(_vm, OID_AUTO, wks_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_compressions, "");
3688
3689 SYSCTL_QUAD(_vm, OID_AUTO, wk_compressions_exclusive, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressions_exclusive, "");
3690 SYSCTL_QUAD(_vm, OID_AUTO, wk_sv_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_sv_compressions, "");
3691 SYSCTL_QUAD(_vm, OID_AUTO, wk_mzv_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_mzv_compressions, "");
3692 SYSCTL_QUAD(_vm, OID_AUTO, wk_compression_failures, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compression_failures, "");
3693 SYSCTL_QUAD(_vm, OID_AUTO, wk_compressed_bytes_exclusive, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressed_bytes_exclusive, "");
3694 SYSCTL_QUAD(_vm, OID_AUTO, wk_compressed_bytes_total, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressed_bytes_total, "");
3695
3696 SYSCTL_QUAD(_vm, OID_AUTO, wks_compressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_compressed_bytes, "");
3697 SYSCTL_QUAD(_vm, OID_AUTO, wks_compression_failures, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_compression_failures, "");
3698 SYSCTL_QUAD(_vm, OID_AUTO, wks_sv_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_sv_compressions, "");
3699
3700
3701 SYSCTL_QUAD(_vm, OID_AUTO, wk_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_decompressions, "");
3702
3703 SYSCTL_QUAD(_vm, OID_AUTO, wk_datime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_dabstime, "");
3704
3705 SYSCTL_QUAD(_vm, OID_AUTO, wkh_datime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_dabstime, "");
3706 SYSCTL_QUAD(_vm, OID_AUTO, wkh_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_decompressions, "");
3707
3708 SYSCTL_QUAD(_vm, OID_AUTO, wks_datime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_dabstime, "");
3709 SYSCTL_QUAD(_vm, OID_AUTO, wks_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_decompressions, "");
3710
3711 SYSCTL_QUAD(_vm, OID_AUTO, wk_decompressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_decompressed_bytes, "");
3712 SYSCTL_QUAD(_vm, OID_AUTO, wk_sv_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_sv_decompressions, "");
3713
3714 SYSCTL_INT(_vm, OID_AUTO, lz4_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_threshold, 0, "");
3715 SYSCTL_INT(_vm, OID_AUTO, wkdm_reeval_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.wkdm_reeval_threshold, 0, "");
3716 SYSCTL_INT(_vm, OID_AUTO, lz4_max_failure_skips, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_max_failure_skips, 0, "");
3717 SYSCTL_INT(_vm, OID_AUTO, lz4_max_failure_run_length, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_max_failure_run_length, 0, "");
3718 SYSCTL_INT(_vm, OID_AUTO, lz4_max_preselects, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_max_preselects, 0, "");
3719 SYSCTL_INT(_vm, OID_AUTO, lz4_run_preselection_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_run_preselection_threshold, 0, "");
3720 SYSCTL_INT(_vm, OID_AUTO, lz4_run_continue_bytes, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_run_continue_bytes, 0, "");
3721 SYSCTL_INT(_vm, OID_AUTO, lz4_profitable_bytes, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_profitable_bytes, 0, "");
3722 #if DEVELOPMENT || DEBUG
3723 extern int vm_compressor_current_codec;
3724 extern int vm_compressor_test_seg_wp;
3725 extern boolean_t vm_compressor_force_sw_wkdm;
3726 SYSCTL_INT(_vm, OID_AUTO, compressor_codec, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_current_codec, 0, "");
3727 SYSCTL_INT(_vm, OID_AUTO, compressor_test_wp, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_test_seg_wp, 0, "");
3728
3729 SYSCTL_INT(_vm, OID_AUTO, wksw_force, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_force_sw_wkdm, 0, "");
3730 extern int precompy, wkswhw;
3731
3732 SYSCTL_INT(_vm, OID_AUTO, precompy, CTLFLAG_RW | CTLFLAG_LOCKED, &precompy, 0, "");
3733 SYSCTL_INT(_vm, OID_AUTO, wkswhw, CTLFLAG_RW | CTLFLAG_LOCKED, &wkswhw, 0, "");
3734 extern unsigned int vm_ktrace_enabled;
3735 SYSCTL_INT(_vm, OID_AUTO, vm_ktrace, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_ktrace_enabled, 0, "");
3736 #endif
3737
3738 #if CONFIG_PHANTOM_CACHE
3739 extern uint32_t phantom_cache_thrashing_threshold;
3740 extern uint32_t phantom_cache_eval_period_in_msecs;
3741 extern uint32_t phantom_cache_thrashing_threshold_ssd;
3742
3743
3744 SYSCTL_INT(_vm, OID_AUTO, phantom_cache_eval_period_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &phantom_cache_eval_period_in_msecs, 0, "");
3745 SYSCTL_INT(_vm, OID_AUTO, phantom_cache_thrashing_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &phantom_cache_thrashing_threshold, 0, "");
3746 SYSCTL_INT(_vm, OID_AUTO, phantom_cache_thrashing_threshold_ssd, CTLFLAG_RW | CTLFLAG_LOCKED, &phantom_cache_thrashing_threshold_ssd, 0, "");
3747 #endif
3748
3749 #if CONFIG_BACKGROUND_QUEUE
3750
3751 extern uint32_t vm_page_background_count;
3752 extern uint32_t vm_page_background_target;
3753 extern uint32_t vm_page_background_internal_count;
3754 extern uint32_t vm_page_background_external_count;
3755 extern uint32_t vm_page_background_mode;
3756 extern uint32_t vm_page_background_exclude_external;
3757 extern uint64_t vm_page_background_promoted_count;
3758 extern uint64_t vm_pageout_rejected_bq_internal;
3759 extern uint64_t vm_pageout_rejected_bq_external;
3760
3761 SYSCTL_INT(_vm, OID_AUTO, vm_page_background_mode, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_background_mode, 0, "");
3762 SYSCTL_INT(_vm, OID_AUTO, vm_page_background_exclude_external, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_background_exclude_external, 0, "");
3763 SYSCTL_INT(_vm, OID_AUTO, vm_page_background_target, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_background_target, 0, "");
3764 SYSCTL_INT(_vm, OID_AUTO, vm_page_background_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_count, 0, "");
3765 SYSCTL_INT(_vm, OID_AUTO, vm_page_background_internal_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_internal_count, 0, "");
3766 SYSCTL_INT(_vm, OID_AUTO, vm_page_background_external_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_external_count, 0, "");
3767
3768 SYSCTL_QUAD(_vm, OID_AUTO, vm_page_background_promoted_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_promoted_count, "");
3769 SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_considered_bq_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_considered_bq_internal, "");
3770 SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_considered_bq_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_considered_bq_external, "");
3771 SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_rejected_bq_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_rejected_bq_internal, "");
3772 SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_rejected_bq_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_rejected_bq_external, "");
3773
3774 #endif /* CONFIG_BACKGROUND_QUEUE */
3775
3776 extern void vm_update_darkwake_mode(boolean_t);
3777 extern boolean_t vm_darkwake_mode;
3778
3779 STATIC int
3780 sysctl_toggle_darkwake_mode(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
3781 {
3782 int new_value, changed;
3783 int error = sysctl_io_number(req, vm_darkwake_mode, sizeof(int), &new_value, &changed);
3784
3785 if (!error && changed) {
3786 if (new_value != 0 && new_value != 1) {
3787 printf("Error: Invalid value passed to darkwake sysctl. Acceptable: 0 or 1.\n");
3788 error = EINVAL;
3789 } else {
3790 vm_update_darkwake_mode((boolean_t) new_value);
3791 }
3792 }
3793
3794 return error;
3795 }
3796
3797 SYSCTL_PROC(_vm, OID_AUTO, darkwake_mode,
3798 CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
3799 0, 0, sysctl_toggle_darkwake_mode, "I", "");
3800
3801 #if (DEVELOPMENT || DEBUG)
3802
3803 SYSCTL_UINT(_vm, OID_AUTO, vm_page_creation_throttled_hard,
3804 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
3805 &vm_page_creation_throttled_hard, 0, "");
3806
3807 SYSCTL_UINT(_vm, OID_AUTO, vm_page_creation_throttled_soft,
3808 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
3809 &vm_page_creation_throttled_soft, 0, "");
3810
3811 extern uint32_t vm_pageout_memorystatus_fb_factor_nr;
3812 extern uint32_t vm_pageout_memorystatus_fb_factor_dr;
3813 SYSCTL_INT(_vm, OID_AUTO, vm_pageout_memorystatus_fb_factor_nr, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_memorystatus_fb_factor_nr, 0, "");
3814 SYSCTL_INT(_vm, OID_AUTO, vm_pageout_memorystatus_fb_factor_dr, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_memorystatus_fb_factor_dr, 0, "");
3815
3816 extern uint32_t vm_grab_anon_nops;
3817
3818 SYSCTL_INT(_vm, OID_AUTO, vm_grab_anon_overrides, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_debug.vm_grab_anon_overrides, 0, "");
3819 SYSCTL_INT(_vm, OID_AUTO, vm_grab_anon_nops, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_debug.vm_grab_anon_nops, 0, "");
3820
3821 /* log message counters for persistence mode */
3822 extern uint32_t oslog_p_total_msgcount;
3823 extern uint32_t oslog_p_metadata_saved_msgcount;
3824 extern uint32_t oslog_p_metadata_dropped_msgcount;
3825 extern uint32_t oslog_p_error_count;
3826 extern uint32_t oslog_p_saved_msgcount;
3827 extern uint32_t oslog_p_dropped_msgcount;
3828 extern uint32_t oslog_p_boot_dropped_msgcount;
3829
3830 /* log message counters for streaming mode */
3831 extern uint32_t oslog_s_total_msgcount;
3832 extern uint32_t oslog_s_metadata_msgcount;
3833 extern uint32_t oslog_s_error_count;
3834 extern uint32_t oslog_s_streamed_msgcount;
3835 extern uint32_t oslog_s_dropped_msgcount;
3836
3837 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_total_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_total_msgcount, 0, "");
3838 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_metadata_saved_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_metadata_saved_msgcount, 0, "");
3839 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_metadata_dropped_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_metadata_dropped_msgcount, 0, "");
3840 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_error_count, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_error_count, 0, "");
3841 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_saved_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_saved_msgcount, 0, "");
3842 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_dropped_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_dropped_msgcount, 0, "");
3843 SYSCTL_UINT(_debug, OID_AUTO, oslog_p_boot_dropped_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_p_boot_dropped_msgcount, 0, "");
3844
3845 SYSCTL_UINT(_debug, OID_AUTO, oslog_s_total_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_s_total_msgcount, 0, "");
3846 SYSCTL_UINT(_debug, OID_AUTO, oslog_s_metadata_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_s_metadata_msgcount, 0, "");
3847 SYSCTL_UINT(_debug, OID_AUTO, oslog_s_error_count, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_s_error_count, 0, "");
3848 SYSCTL_UINT(_debug, OID_AUTO, oslog_s_streamed_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_s_streamed_msgcount, 0, "");
3849 SYSCTL_UINT(_debug, OID_AUTO, oslog_s_dropped_msgcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_s_dropped_msgcount, 0, "");
3850
3851
3852 #endif /* DEVELOPMENT || DEBUG */
3853
3854 /*
3855 * Enable tracing of voucher contents
3856 */
3857 extern uint32_t ipc_voucher_trace_contents;
3858
3859 SYSCTL_INT(_kern, OID_AUTO, ipc_voucher_trace_contents,
3860 CTLFLAG_RW | CTLFLAG_LOCKED, &ipc_voucher_trace_contents, 0, "Enable tracing voucher contents");
3861
3862 /*
3863 * Kernel stack size and depth
3864 */
3865 SYSCTL_INT(_kern, OID_AUTO, stack_size,
3866 CTLFLAG_RD | CTLFLAG_LOCKED, (int *) &kernel_stack_size, 0, "Kernel stack size");
3867 SYSCTL_INT(_kern, OID_AUTO, stack_depth_max,
3868 CTLFLAG_RD | CTLFLAG_LOCKED, (int *) &kernel_stack_depth_max, 0, "Max kernel stack depth at interrupt or context switch");
3869
3870 extern unsigned int kern_feature_overrides;
3871 SYSCTL_INT(_kern, OID_AUTO, kern_feature_overrides,
3872 CTLFLAG_RD | CTLFLAG_LOCKED, &kern_feature_overrides, 0, "Kernel feature override mask");
3873
3874 /*
3875 * enable back trace for port allocations
3876 */
3877 extern int ipc_portbt;
3878
3879 SYSCTL_INT(_kern, OID_AUTO, ipc_portbt,
3880 CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
3881 &ipc_portbt, 0, "");
3882
3883 /*
3884 * Scheduler sysctls
3885 */
3886
3887 SYSCTL_STRING(_kern, OID_AUTO, sched,
3888 CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED,
3889 sched_string, sizeof(sched_string),
3890 "Timeshare scheduler implementation");
3891
3892 #if CONFIG_QUIESCE_COUNTER
3893 static int
3894 sysctl_cpu_quiescent_counter_interval SYSCTL_HANDLER_ARGS
3895 {
3896 #pragma unused(arg1, arg2)
3897
3898 uint32_t local_min_interval_us = cpu_quiescent_counter_get_min_interval_us();
3899
3900 int error = sysctl_handle_int(oidp, &local_min_interval_us, 0, req);
3901 if (error || !req->newptr) {
3902 return error;
3903 }
3904
3905 cpu_quiescent_counter_set_min_interval_us(local_min_interval_us);
3906
3907 return 0;
3908 }
3909
3910 SYSCTL_PROC(_kern, OID_AUTO, cpu_checkin_interval,
3911 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
3912 0, 0,
3913 sysctl_cpu_quiescent_counter_interval, "I",
3914 "Quiescent CPU checkin interval (microseconds)");
3915 #endif /* CONFIG_QUIESCE_COUNTER */
3916
3917
3918 /*
3919 * Only support runtime modification on embedded platforms
3920 * with development config enabled
3921 */
3922 #if CONFIG_EMBEDDED
3923 #if !SECURE_KERNEL
3924 extern int precise_user_kernel_time;
3925 SYSCTL_INT(_kern, OID_AUTO, precise_user_kernel_time,
3926 CTLFLAG_RW | CTLFLAG_LOCKED,
3927 &precise_user_kernel_time, 0, "Precise accounting of kernel vs. user time");
3928 #endif
3929 #endif
3930
3931
3932 /* Parameters related to timer coalescing tuning, to be replaced
3933 * with a dedicated systemcall in the future.
3934 */
3935 /* Enable processing pending timers in the context of any other interrupt
3936 * Coalescing tuning parameters for various thread/task attributes */
3937 STATIC int
3938 sysctl_timer_user_us_kernel_abstime SYSCTL_HANDLER_ARGS
3939 {
3940 #pragma unused(oidp)
3941 int size = arg2; /* subcommand*/
3942 int error;
3943 int changed = 0;
3944 uint64_t old_value_ns;
3945 uint64_t new_value_ns;
3946 uint64_t value_abstime;
3947 if (size == sizeof(uint32_t)) {
3948 value_abstime = *((uint32_t *)arg1);
3949 } else if (size == sizeof(uint64_t)) {
3950 value_abstime = *((uint64_t *)arg1);
3951 } else {
3952 return ENOTSUP;
3953 }
3954
3955 absolutetime_to_nanoseconds(value_abstime, &old_value_ns);
3956 error = sysctl_io_number(req, old_value_ns, sizeof(old_value_ns), &new_value_ns, &changed);
3957 if ((error) || (!changed)) {
3958 return error;
3959 }
3960
3961 nanoseconds_to_absolutetime(new_value_ns, &value_abstime);
3962 if (size == sizeof(uint32_t)) {
3963 *((uint32_t *)arg1) = (uint32_t)value_abstime;
3964 } else {
3965 *((uint64_t *)arg1) = value_abstime;
3966 }
3967 return error;
3968 }
3969
3970 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_bg_scale,
3971 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
3972 &tcoal_prio_params.timer_coalesce_bg_shift, 0, "");
3973 SYSCTL_PROC(_kern, OID_AUTO, timer_resort_threshold_ns,
3974 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
3975 &tcoal_prio_params.timer_resort_threshold_abstime,
3976 sizeof(tcoal_prio_params.timer_resort_threshold_abstime),
3977 sysctl_timer_user_us_kernel_abstime,
3978 "Q", "");
3979 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_bg_ns_max,
3980 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
3981 &tcoal_prio_params.timer_coalesce_bg_abstime_max,
3982 sizeof(tcoal_prio_params.timer_coalesce_bg_abstime_max),
3983 sysctl_timer_user_us_kernel_abstime,
3984 "Q", "");
3985
3986 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_kt_scale,
3987 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
3988 &tcoal_prio_params.timer_coalesce_kt_shift, 0, "");
3989
3990 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_kt_ns_max,
3991 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
3992 &tcoal_prio_params.timer_coalesce_kt_abstime_max,
3993 sizeof(tcoal_prio_params.timer_coalesce_kt_abstime_max),
3994 sysctl_timer_user_us_kernel_abstime,
3995 "Q", "");
3996
3997 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_fp_scale,
3998 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
3999 &tcoal_prio_params.timer_coalesce_fp_shift, 0, "");
4000
4001 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_fp_ns_max,
4002 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4003 &tcoal_prio_params.timer_coalesce_fp_abstime_max,
4004 sizeof(tcoal_prio_params.timer_coalesce_fp_abstime_max),
4005 sysctl_timer_user_us_kernel_abstime,
4006 "Q", "");
4007
4008 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_ts_scale,
4009 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4010 &tcoal_prio_params.timer_coalesce_ts_shift, 0, "");
4011
4012 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_ts_ns_max,
4013 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4014 &tcoal_prio_params.timer_coalesce_ts_abstime_max,
4015 sizeof(tcoal_prio_params.timer_coalesce_ts_abstime_max),
4016 sysctl_timer_user_us_kernel_abstime,
4017 "Q", "");
4018
4019 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier0_scale,
4020 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4021 &tcoal_prio_params.latency_qos_scale[0], 0, "");
4022
4023 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier0_ns_max,
4024 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4025 &tcoal_prio_params.latency_qos_abstime_max[0],
4026 sizeof(tcoal_prio_params.latency_qos_abstime_max[0]),
4027 sysctl_timer_user_us_kernel_abstime,
4028 "Q", "");
4029
4030 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier1_scale,
4031 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4032 &tcoal_prio_params.latency_qos_scale[1], 0, "");
4033
4034 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier1_ns_max,
4035 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4036 &tcoal_prio_params.latency_qos_abstime_max[1],
4037 sizeof(tcoal_prio_params.latency_qos_abstime_max[1]),
4038 sysctl_timer_user_us_kernel_abstime,
4039 "Q", "");
4040
4041 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier2_scale,
4042 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4043 &tcoal_prio_params.latency_qos_scale[2], 0, "");
4044
4045 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier2_ns_max,
4046 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4047 &tcoal_prio_params.latency_qos_abstime_max[2],
4048 sizeof(tcoal_prio_params.latency_qos_abstime_max[2]),
4049 sysctl_timer_user_us_kernel_abstime,
4050 "Q", "");
4051
4052 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier3_scale,
4053 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4054 &tcoal_prio_params.latency_qos_scale[3], 0, "");
4055
4056 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier3_ns_max,
4057 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4058 &tcoal_prio_params.latency_qos_abstime_max[3],
4059 sizeof(tcoal_prio_params.latency_qos_abstime_max[3]),
4060 sysctl_timer_user_us_kernel_abstime,
4061 "Q", "");
4062
4063 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier4_scale,
4064 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4065 &tcoal_prio_params.latency_qos_scale[4], 0, "");
4066
4067 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier4_ns_max,
4068 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4069 &tcoal_prio_params.latency_qos_abstime_max[4],
4070 sizeof(tcoal_prio_params.latency_qos_abstime_max[4]),
4071 sysctl_timer_user_us_kernel_abstime,
4072 "Q", "");
4073
4074 SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier5_scale,
4075 CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4076 &tcoal_prio_params.latency_qos_scale[5], 0, "");
4077
4078 SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier5_ns_max,
4079 CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
4080 &tcoal_prio_params.latency_qos_abstime_max[5],
4081 sizeof(tcoal_prio_params.latency_qos_abstime_max[5]),
4082 sysctl_timer_user_us_kernel_abstime,
4083 "Q", "");
4084
4085 /* Communicate the "user idle level" heuristic to the timer layer, and
4086 * potentially other layers in the future.
4087 */
4088
4089 static int
4090 timer_user_idle_level(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
4091 {
4092 int new_value = 0, old_value = 0, changed = 0, error;
4093
4094 old_value = timer_get_user_idle_level();
4095
4096 error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed);
4097
4098 if (error == 0 && changed) {
4099 if (timer_set_user_idle_level(new_value) != KERN_SUCCESS) {
4100 error = ERANGE;
4101 }
4102 }
4103
4104 return error;
4105 }
4106
4107 SYSCTL_PROC(_machdep, OID_AUTO, user_idle_level,
4108 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
4109 0, 0,
4110 timer_user_idle_level, "I", "User idle level heuristic, 0-128");
4111
4112 #if HYPERVISOR
4113 SYSCTL_INT(_kern, OID_AUTO, hv_support,
4114 CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED,
4115 &hv_support_available, 0, "");
4116 #endif
4117
4118 #if CONFIG_EMBEDDED
4119 STATIC int
4120 sysctl_darkboot SYSCTL_HANDLER_ARGS
4121 {
4122 int err = 0, value = 0;
4123 #pragma unused(oidp, arg1, arg2, err, value, req)
4124
4125 /*
4126 * Handle the sysctl request.
4127 *
4128 * If this is a read, the function will set the value to the current darkboot value. Otherwise,
4129 * we'll get the request identifier into "value" and then we can honor it.
4130 */
4131 if ((err = sysctl_io_number(req, darkboot, sizeof(int), &value, NULL)) != 0) {
4132 goto exit;
4133 }
4134
4135 /* writing requested, let's process the request */
4136 if (req->newptr) {
4137 /* writing is protected by an entitlement */
4138 if (priv_check_cred(kauth_cred_get(), PRIV_DARKBOOT, 0) != 0) {
4139 err = EPERM;
4140 goto exit;
4141 }
4142
4143 switch (value) {
4144 case MEMORY_MAINTENANCE_DARK_BOOT_UNSET:
4145 /*
4146 * If the darkboot sysctl is unset, the NVRAM variable
4147 * must be unset too. If that's not the case, it means
4148 * someone is doing something crazy and not supported.
4149 */
4150 if (darkboot != 0) {
4151 int ret = PERemoveNVRAMProperty(MEMORY_MAINTENANCE_DARK_BOOT_NVRAM_NAME);
4152 if (ret) {
4153 darkboot = 0;
4154 } else {
4155 err = EINVAL;
4156 }
4157 }
4158 break;
4159 case MEMORY_MAINTENANCE_DARK_BOOT_SET:
4160 darkboot = 1;
4161 break;
4162 case MEMORY_MAINTENANCE_DARK_BOOT_SET_PERSISTENT: {
4163 /*
4164 * Set the NVRAM and update 'darkboot' in case
4165 * of success. Otherwise, do not update
4166 * 'darkboot' and report the failure.
4167 */
4168 if (PEWriteNVRAMBooleanProperty(MEMORY_MAINTENANCE_DARK_BOOT_NVRAM_NAME, TRUE)) {
4169 darkboot = 1;
4170 } else {
4171 err = EINVAL;
4172 }
4173
4174 break;
4175 }
4176 default:
4177 err = EINVAL;
4178 }
4179 }
4180
4181 exit:
4182 return err;
4183 }
4184
4185 SYSCTL_PROC(_kern, OID_AUTO, darkboot,
4186 CTLFLAG_KERN | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY,
4187 0, 0, sysctl_darkboot, "I", "");
4188 #endif
4189
4190 #if DEVELOPMENT || DEBUG
4191 #include <sys/sysent.h>
4192 /* This should result in a fatal exception, verifying that "sysent" is
4193 * write-protected.
4194 */
4195 static int
4196 kern_sysent_write(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
4197 {
4198 uint64_t new_value = 0, old_value = 0;
4199 int changed = 0, error;
4200
4201 error = sysctl_io_number(req, old_value, sizeof(uint64_t), &new_value, &changed);
4202 if ((error == 0) && changed) {
4203 volatile uint32_t *wraddr = (uint32_t *) &sysent[0];
4204 *wraddr = 0;
4205 printf("sysent[0] write succeeded\n");
4206 }
4207 return error;
4208 }
4209
4210 SYSCTL_PROC(_kern, OID_AUTO, sysent_const_check,
4211 CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
4212 0, 0,
4213 kern_sysent_write, "I", "Attempt sysent[0] write");
4214
4215 #endif
4216
4217 #if DEVELOPMENT || DEBUG
4218 SYSCTL_COMPAT_INT(_kern, OID_AUTO, development, CTLFLAG_RD | CTLFLAG_MASKED, NULL, 1, "");
4219 #else
4220 SYSCTL_COMPAT_INT(_kern, OID_AUTO, development, CTLFLAG_RD | CTLFLAG_MASKED, NULL, 0, "");
4221 #endif
4222
4223
4224 #if DEVELOPMENT || DEBUG
4225
4226 static int
4227 sysctl_panic_test SYSCTL_HANDLER_ARGS
4228 {
4229 #pragma unused(arg1, arg2)
4230 int rval = 0;
4231 char str[32] = "entry prelog postlog postcore";
4232
4233 rval = sysctl_handle_string(oidp, str, sizeof(str), req);
4234
4235 if (rval == 0 && req->newptr) {
4236 if (strncmp("entry", str, strlen("entry")) == 0) {
4237 panic_with_options(0, NULL, DEBUGGER_OPTION_RECURPANIC_ENTRY, "test recursive panic at entry");
4238 } else if (strncmp("prelog", str, strlen("prelog")) == 0) {
4239 panic_with_options(0, NULL, DEBUGGER_OPTION_RECURPANIC_PRELOG, "test recursive panic prior to writing a paniclog");
4240 } else if (strncmp("postlog", str, strlen("postlog")) == 0) {
4241 panic_with_options(0, NULL, DEBUGGER_OPTION_RECURPANIC_POSTLOG, "test recursive panic subsequent to paniclog");
4242 } else if (strncmp("postcore", str, strlen("postcore")) == 0) {
4243 panic_with_options(0, NULL, DEBUGGER_OPTION_RECURPANIC_POSTCORE, "test recursive panic subsequent to on-device core");
4244 }
4245 }
4246
4247 return rval;
4248 }
4249
4250 static int
4251 sysctl_debugger_test SYSCTL_HANDLER_ARGS
4252 {
4253 #pragma unused(arg1, arg2)
4254 int rval = 0;
4255 char str[32] = "entry prelog postlog postcore";
4256
4257 rval = sysctl_handle_string(oidp, str, sizeof(str), req);
4258
4259 if (rval == 0 && req->newptr) {
4260 if (strncmp("entry", str, strlen("entry")) == 0) {
4261 DebuggerWithContext(0, NULL, "test recursive panic via debugger at entry", DEBUGGER_OPTION_RECURPANIC_ENTRY);
4262 } else if (strncmp("prelog", str, strlen("prelog")) == 0) {
4263 DebuggerWithContext(0, NULL, "test recursive panic via debugger prior to writing a paniclog", DEBUGGER_OPTION_RECURPANIC_PRELOG);
4264 } else if (strncmp("postlog", str, strlen("postlog")) == 0) {
4265 DebuggerWithContext(0, NULL, "test recursive panic via debugger subsequent to paniclog", DEBUGGER_OPTION_RECURPANIC_POSTLOG);
4266 } else if (strncmp("postcore", str, strlen("postcore")) == 0) {
4267 DebuggerWithContext(0, NULL, "test recursive panic via debugger subsequent to on-device core", DEBUGGER_OPTION_RECURPANIC_POSTCORE);
4268 }
4269 }
4270
4271 return rval;
4272 }
4273
4274 decl_lck_spin_data(, spinlock_panic_test_lock);
4275
4276 __attribute__((noreturn))
4277 static void
4278 spinlock_panic_test_acquire_spinlock(void * arg __unused, wait_result_t wres __unused)
4279 {
4280 lck_spin_lock(&spinlock_panic_test_lock);
4281 while (1) {
4282 ;
4283 }
4284 }
4285
4286 static int
4287 sysctl_spinlock_panic_test SYSCTL_HANDLER_ARGS
4288 {
4289 #pragma unused(oidp, arg1, arg2)
4290 if (req->newlen == 0) {
4291 return EINVAL;
4292 }
4293
4294 thread_t panic_spinlock_thread;
4295 /* Initialize panic spinlock */
4296 lck_grp_t * panic_spinlock_grp;
4297 lck_grp_attr_t * panic_spinlock_grp_attr;
4298 lck_attr_t * panic_spinlock_attr;
4299
4300 panic_spinlock_grp_attr = lck_grp_attr_alloc_init();
4301 panic_spinlock_grp = lck_grp_alloc_init("panic_spinlock", panic_spinlock_grp_attr);
4302 panic_spinlock_attr = lck_attr_alloc_init();
4303
4304 lck_spin_init(&spinlock_panic_test_lock, panic_spinlock_grp, panic_spinlock_attr);
4305
4306
4307 /* Create thread to acquire spinlock */
4308 if (kernel_thread_start(spinlock_panic_test_acquire_spinlock, NULL, &panic_spinlock_thread) != KERN_SUCCESS) {
4309 return EBUSY;
4310 }
4311
4312 /* Try to acquire spinlock -- should panic eventually */
4313 lck_spin_lock(&spinlock_panic_test_lock);
4314 while (1) {
4315 ;
4316 }
4317 }
4318
4319 __attribute__((noreturn))
4320 static void
4321 simultaneous_panic_worker
4322 (void * arg, wait_result_t wres __unused)
4323 {
4324 atomic_int *start_panic = (atomic_int *)arg;
4325
4326 while (!atomic_load(start_panic)) {
4327 ;
4328 }
4329 panic("SIMULTANEOUS PANIC TEST: INITIATING PANIC FROM CPU %d", cpu_number());
4330 __builtin_unreachable();
4331 }
4332
4333 static int
4334 sysctl_simultaneous_panic_test SYSCTL_HANDLER_ARGS
4335 {
4336 #pragma unused(oidp, arg1, arg2)
4337 if (req->newlen == 0) {
4338 return EINVAL;
4339 }
4340
4341 int i = 0, threads_to_create = 2 * processor_count;
4342 atomic_int start_panic = 0;
4343 unsigned int threads_created = 0;
4344 thread_t new_panic_thread;
4345
4346 for (i = threads_to_create; i > 0; i--) {
4347 if (kernel_thread_start(simultaneous_panic_worker, (void *) &start_panic, &new_panic_thread) == KERN_SUCCESS) {
4348 threads_created++;
4349 }
4350 }
4351
4352 /* FAIL if we couldn't create at least processor_count threads */
4353 if (threads_created < processor_count) {
4354 panic("SIMULTANEOUS PANIC TEST: FAILED TO CREATE ENOUGH THREADS, ONLY CREATED %d (of %d)",
4355 threads_created, threads_to_create);
4356 }
4357
4358 atomic_exchange(&start_panic, 1);
4359 while (1) {
4360 ;
4361 }
4362 }
4363
4364 SYSCTL_PROC(_debug, OID_AUTO, panic_test, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_MASKED, 0, 0, sysctl_panic_test, "A", "panic test");
4365 SYSCTL_PROC(_debug, OID_AUTO, debugger_test, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_MASKED, 0, 0, sysctl_debugger_test, "A", "debugger test");
4366 SYSCTL_PROC(_debug, OID_AUTO, spinlock_panic_test, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_MASKED, 0, 0, sysctl_spinlock_panic_test, "A", "spinlock panic test");
4367 SYSCTL_PROC(_debug, OID_AUTO, simultaneous_panic_test, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_MASKED, 0, 0, sysctl_simultaneous_panic_test, "A", "simultaneous panic test");
4368
4369 extern int exc_resource_threads_enabled;
4370
4371 SYSCTL_INT(_kern, OID_AUTO, exc_resource_threads_enabled, CTLFLAG_RD | CTLFLAG_LOCKED, &exc_resource_threads_enabled, 0, "exc_resource thread limit enabled");
4372
4373
4374 #endif /* DEVELOPMENT || DEBUG */
4375
4376 const uint32_t thread_groups_supported = 0;
4377
4378 STATIC int
4379 sysctl_thread_groups_supported(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
4380 {
4381 int value = thread_groups_supported;
4382 return sysctl_io_number(req, value, sizeof(value), NULL, NULL);
4383 }
4384
4385 SYSCTL_PROC(_kern, OID_AUTO, thread_groups_supported, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN,
4386 0, 0, &sysctl_thread_groups_supported, "I", "thread groups supported");
4387
4388 static int
4389 sysctl_grade_cputype SYSCTL_HANDLER_ARGS
4390 {
4391 #pragma unused(arg1, arg2, oidp)
4392 int error = 0;
4393 int type_tuple[2] = {};
4394 int return_value = 0;
4395
4396 error = SYSCTL_IN(req, &type_tuple, sizeof(type_tuple));
4397
4398 if (error) {
4399 return error;
4400 }
4401
4402 return_value = grade_binary(type_tuple[0], type_tuple[1], FALSE);
4403
4404 error = SYSCTL_OUT(req, &return_value, sizeof(return_value));
4405
4406 if (error) {
4407 return error;
4408 }
4409
4410 return error;
4411 }
4412
4413 SYSCTL_PROC(_kern, OID_AUTO, grade_cputype,
4414 CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_MASKED | CTLFLAG_LOCKED | CTLTYPE_OPAQUE,
4415 0, 0, &sysctl_grade_cputype, "S",
4416 "grade value of cpu_type_t+cpu_sub_type_t");
4417
4418
4419 #if DEVELOPMENT || DEBUG
4420
4421 static atomic_int wedge_thread_should_wake = 0;
4422
4423 static int
4424 unwedge_thread SYSCTL_HANDLER_ARGS
4425 {
4426 #pragma unused(arg1, arg2)
4427 int error, val = 0;
4428 error = sysctl_handle_int(oidp, &val, 0, req);
4429 if (error || val == 0) {
4430 return error;
4431 }
4432
4433 atomic_store(&wedge_thread_should_wake, 1);
4434 return 0;
4435 }
4436
4437 SYSCTL_PROC(_kern, OID_AUTO, unwedge_thread, CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, unwedge_thread, "I", "unwedge the thread wedged by kern.wedge_thread");
4438
4439 SYSCTL_LONG(_kern, OID_AUTO, phys_carveout_pa, CTLFLAG_RD | CTLFLAG_LOCKED,
4440 &phys_carveout_pa,
4441 "base physical address of the phys_carveout_mb boot-arg region");
4442 SYSCTL_LONG(_kern, OID_AUTO, phys_carveout_size, CTLFLAG_RD | CTLFLAG_LOCKED,
4443 &phys_carveout_size,
4444 "size in bytes of the phys_carveout_mb boot-arg region");
4445
4446 static int
4447 wedge_thread SYSCTL_HANDLER_ARGS
4448 {
4449 #pragma unused(arg1, arg2)
4450
4451 int error, val = 0;
4452 error = sysctl_handle_int(oidp, &val, 0, req);
4453 if (error || val == 0) {
4454 return error;
4455 }
4456
4457 uint64_t interval = 1;
4458 nanoseconds_to_absolutetime(1000 * 1000 * 50, &interval);
4459
4460 atomic_store(&wedge_thread_should_wake, 0);
4461 while (!atomic_load(&wedge_thread_should_wake)) {
4462 tsleep1(NULL, 0, "wedge_thread", mach_absolute_time() + interval, NULL);
4463 }
4464
4465 return 0;
4466 }
4467
4468 SYSCTL_PROC(_kern, OID_AUTO, wedge_thread, CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, wedge_thread, "I", "wedge this thread so it cannot be cleaned up");
4469
4470 extern unsigned long
4471 total_corpses_count(void);
4472
4473 static int
4474 sysctl_total_corpses_count SYSCTL_HANDLER_ARGS;
4475
4476 static int
4477 sysctl_total_corpses_count SYSCTL_HANDLER_ARGS
4478 {
4479 #pragma unused(oidp, arg1, arg2)
4480 int corpse_count = total_corpses_count();
4481 return sysctl_io_opaque(req, &corpse_count, sizeof(int), NULL);
4482 }
4483
4484 SYSCTL_PROC(_kern, OID_AUTO, total_corpses_count, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_total_corpses_count, "I", "total corpses on the system");
4485
4486 static int
4487 sysctl_turnstile_test_prim_lock SYSCTL_HANDLER_ARGS;
4488 static int
4489 sysctl_turnstile_test_prim_unlock SYSCTL_HANDLER_ARGS;
4490 int
4491 tstile_test_prim_lock(boolean_t use_hashtable);
4492 int
4493 tstile_test_prim_unlock(boolean_t use_hashtable);
4494
4495 static int
4496 sysctl_turnstile_test_prim_lock SYSCTL_HANDLER_ARGS
4497 {
4498 #pragma unused(arg1, arg2)
4499 int error, val = 0;
4500 error = sysctl_handle_int(oidp, &val, 0, req);
4501 if (error || val == 0) {
4502 return error;
4503 }
4504 switch (val) {
4505 case SYSCTL_TURNSTILE_TEST_USER_DEFAULT:
4506 case SYSCTL_TURNSTILE_TEST_USER_HASHTABLE:
4507 case SYSCTL_TURNSTILE_TEST_KERNEL_DEFAULT:
4508 case SYSCTL_TURNSTILE_TEST_KERNEL_HASHTABLE:
4509 return tstile_test_prim_lock(val);
4510 default:
4511 return error;
4512 }
4513 }
4514
4515 static int
4516 sysctl_turnstile_test_prim_unlock SYSCTL_HANDLER_ARGS
4517 {
4518 #pragma unused(arg1, arg2)
4519 int error, val = 0;
4520 error = sysctl_handle_int(oidp, &val, 0, req);
4521 if (error || val == 0) {
4522 return error;
4523 }
4524 switch (val) {
4525 case SYSCTL_TURNSTILE_TEST_USER_DEFAULT:
4526 case SYSCTL_TURNSTILE_TEST_USER_HASHTABLE:
4527 case SYSCTL_TURNSTILE_TEST_KERNEL_DEFAULT:
4528 case SYSCTL_TURNSTILE_TEST_KERNEL_HASHTABLE:
4529 return tstile_test_prim_unlock(val);
4530 default:
4531 return error;
4532 }
4533 }
4534
4535 SYSCTL_PROC(_kern, OID_AUTO, turnstiles_test_lock, CTLFLAG_WR | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED,
4536 0, 0, sysctl_turnstile_test_prim_lock, "I", "turnstiles test lock");
4537
4538 SYSCTL_PROC(_kern, OID_AUTO, turnstiles_test_unlock, CTLFLAG_WR | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED,
4539 0, 0, sysctl_turnstile_test_prim_unlock, "I", "turnstiles test unlock");
4540
4541 int
4542 turnstile_get_boost_stats_sysctl(void *req);
4543 int
4544 turnstile_get_unboost_stats_sysctl(void *req);
4545 static int
4546 sysctl_turnstile_boost_stats SYSCTL_HANDLER_ARGS;
4547 static int
4548 sysctl_turnstile_unboost_stats SYSCTL_HANDLER_ARGS;
4549 extern uint64_t thread_block_on_turnstile_count;
4550 extern uint64_t thread_block_on_regular_waitq_count;
4551
4552 static int
4553 sysctl_turnstile_boost_stats SYSCTL_HANDLER_ARGS
4554 {
4555 #pragma unused(arg1, arg2, oidp)
4556 return turnstile_get_boost_stats_sysctl(req);
4557 }
4558
4559 static int
4560 sysctl_turnstile_unboost_stats SYSCTL_HANDLER_ARGS
4561 {
4562 #pragma unused(arg1, arg2, oidp)
4563 return turnstile_get_unboost_stats_sysctl(req);
4564 }
4565
4566 SYSCTL_PROC(_kern, OID_AUTO, turnstile_boost_stats, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLTYPE_STRUCT,
4567 0, 0, sysctl_turnstile_boost_stats, "S", "turnstiles boost stats");
4568 SYSCTL_PROC(_kern, OID_AUTO, turnstile_unboost_stats, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLTYPE_STRUCT,
4569 0, 0, sysctl_turnstile_unboost_stats, "S", "turnstiles unboost stats");
4570 SYSCTL_QUAD(_kern, OID_AUTO, thread_block_count_on_turnstile,
4571 CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED,
4572 &thread_block_on_turnstile_count, "thread blocked on turnstile count");
4573 SYSCTL_QUAD(_kern, OID_AUTO, thread_block_count_on_reg_waitq,
4574 CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED,
4575 &thread_block_on_regular_waitq_count, "thread blocked on regular waitq count");
4576
4577 static int
4578 sysctl_erase_all_test_mtx_stats SYSCTL_HANDLER_ARGS
4579 {
4580 #pragma unused(arg1, arg2)
4581 int error, val = 0;
4582 error = sysctl_handle_int(oidp, &val, 0, req);
4583 if (error || val == 0) {
4584 return error;
4585 }
4586
4587 if (val == 1) {
4588 lck_mtx_test_init();
4589 erase_all_test_mtx_stats();
4590 }
4591
4592 return 0;
4593 }
4594
4595 static int
4596 sysctl_get_test_mtx_stats SYSCTL_HANDLER_ARGS
4597 {
4598 #pragma unused(oidp, arg1, arg2)
4599 char* buffer;
4600 int size, buffer_size, error;
4601
4602 buffer_size = 1000;
4603 buffer = kalloc(buffer_size);
4604 if (!buffer) {
4605 panic("Impossible to allocate memory for %s\n", __func__);
4606 }
4607
4608 lck_mtx_test_init();
4609
4610 size = get_test_mtx_stats_string(buffer, buffer_size);
4611
4612 error = sysctl_io_string(req, buffer, size, 0, NULL);
4613
4614 kfree(buffer, buffer_size);
4615
4616 return error;
4617 }
4618
4619 static int
4620 sysctl_test_mtx_uncontended SYSCTL_HANDLER_ARGS
4621 {
4622 #pragma unused(oidp, arg1, arg2)
4623 char* buffer;
4624 int buffer_size, offset, error, iter;
4625 char input_val[40];
4626
4627 if (!req->newptr) {
4628 return 0;
4629 }
4630
4631 if (!req->oldptr) {
4632 return EINVAL;
4633 }
4634
4635 if (req->newlen >= sizeof(input_val)) {
4636 return EINVAL;
4637 }
4638
4639 error = SYSCTL_IN(req, input_val, req->newlen);
4640 if (error) {
4641 return error;
4642 }
4643 input_val[req->newlen] = '\0';
4644
4645 iter = 0;
4646 error = sscanf(input_val, "%d", &iter);
4647 if (error != 1) {
4648 printf("%s invalid input\n", __func__);
4649 return EINVAL;
4650 }
4651
4652 if (iter <= 0) {
4653 printf("%s requested %d iterations, not starting the test\n", __func__, iter);
4654 return EINVAL;
4655 }
4656
4657 lck_mtx_test_init();
4658
4659 buffer_size = 2000;
4660 offset = 0;
4661 buffer = kalloc(buffer_size);
4662 if (!buffer) {
4663 panic("Impossible to allocate memory for %s\n", __func__);
4664 }
4665 memset(buffer, 0, buffer_size);
4666
4667 printf("%s starting uncontended mutex test with %d iterations\n", __func__, iter);
4668
4669 offset = scnprintf(buffer, buffer_size, "STATS INNER LOOP");
4670 offset += lck_mtx_test_mtx_uncontended(iter, &buffer[offset], buffer_size - offset);
4671
4672 offset += scnprintf(&buffer[offset], buffer_size - offset, "\nSTATS OUTER LOOP");
4673 offset += lck_mtx_test_mtx_uncontended_loop_time(iter, &buffer[offset], buffer_size - offset);
4674
4675 error = SYSCTL_OUT(req, buffer, offset);
4676
4677 kfree(buffer, buffer_size);
4678 return error;
4679 }
4680
4681 static int
4682 sysctl_test_mtx_contended SYSCTL_HANDLER_ARGS
4683 {
4684 #pragma unused(oidp, arg1, arg2)
4685 char* buffer;
4686 int buffer_size, offset, error, iter;
4687 char input_val[40];
4688
4689 if (!req->newptr) {
4690 return 0;
4691 }
4692
4693 if (!req->oldptr) {
4694 return EINVAL;
4695 }
4696
4697 if (req->newlen >= sizeof(input_val)) {
4698 return EINVAL;
4699 }
4700
4701 error = SYSCTL_IN(req, input_val, req->newlen);
4702 if (error) {
4703 return error;
4704 }
4705 input_val[req->newlen] = '\0';
4706
4707 iter = 0;
4708 error = sscanf(input_val, "%d", &iter);
4709 if (error != 1) {
4710 printf("%s invalid input\n", __func__);
4711 return EINVAL;
4712 }
4713
4714 if (iter <= 0) {
4715 printf("%s requested %d iterations, not starting the test\n", __func__, iter);
4716 return EINVAL;
4717 }
4718
4719 lck_mtx_test_init();
4720
4721 erase_all_test_mtx_stats();
4722
4723 buffer_size = 2000;
4724 offset = 0;
4725 buffer = kalloc(buffer_size);
4726 if (!buffer) {
4727 panic("Impossible to allocate memory for %s\n", __func__);
4728 }
4729 memset(buffer, 0, buffer_size);
4730
4731 printf("%s starting contended mutex test with %d iterations FULL_CONTENDED\n", __func__, iter);
4732
4733 offset = scnprintf(buffer, buffer_size, "STATS INNER LOOP");
4734 offset += lck_mtx_test_mtx_contended(iter, &buffer[offset], buffer_size - offset, FULL_CONTENDED);
4735
4736 printf("%s starting contended mutex loop test with %d iterations FULL_CONTENDED\n", __func__, iter);
4737
4738 offset += scnprintf(&buffer[offset], buffer_size - offset, "\nSTATS OUTER LOOP");
4739 offset += lck_mtx_test_mtx_contended_loop_time(iter, &buffer[offset], buffer_size - offset, FULL_CONTENDED);
4740
4741 printf("%s starting contended mutex test with %d iterations HALF_CONTENDED\n", __func__, iter);
4742
4743 offset += scnprintf(&buffer[offset], buffer_size - offset, "STATS INNER LOOP");
4744 offset += lck_mtx_test_mtx_contended(iter, &buffer[offset], buffer_size - offset, HALF_CONTENDED);
4745
4746 printf("%s starting contended mutex loop test with %d iterations HALF_CONTENDED\n", __func__, iter);
4747
4748 offset += scnprintf(&buffer[offset], buffer_size - offset, "\nSTATS OUTER LOOP");
4749 offset += lck_mtx_test_mtx_contended_loop_time(iter, &buffer[offset], buffer_size - offset, HALF_CONTENDED);
4750
4751 error = SYSCTL_OUT(req, buffer, offset);
4752
4753 printf("\n%s\n", buffer);
4754 kfree(buffer, buffer_size);
4755
4756 return error;
4757 }
4758
4759 SYSCTL_PROC(_kern, OID_AUTO, erase_all_test_mtx_stats, CTLFLAG_WR | CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED,
4760 0, 0, sysctl_erase_all_test_mtx_stats, "I", "erase test_mtx statistics");
4761
4762 SYSCTL_PROC(_kern, OID_AUTO, get_test_mtx_stats, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_KERN | CTLFLAG_LOCKED,
4763 0, 0, sysctl_get_test_mtx_stats, "A", "get test_mtx statistics");
4764
4765 SYSCTL_PROC(_kern, OID_AUTO, test_mtx_contended, CTLTYPE_STRING | CTLFLAG_MASKED | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
4766 0, 0, sysctl_test_mtx_contended, "A", "get statistics for contended mtx test");
4767
4768 SYSCTL_PROC(_kern, OID_AUTO, test_mtx_uncontended, CTLTYPE_STRING | CTLFLAG_MASKED | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED,
4769 0, 0, sysctl_test_mtx_uncontended, "A", "get statistics for uncontended mtx test");
4770
4771 extern uint64_t MutexSpin;
4772
4773 SYSCTL_QUAD(_kern, OID_AUTO, mutex_spin_us, CTLFLAG_RW, &MutexSpin,
4774 "Spin time for acquiring a kernel mutex");
4775
4776 #if defined (__x86_64__)
4777
4778 semaphore_t sysctl_test_panic_with_thread_sem;
4779
4780 #pragma clang diagnostic push
4781 #pragma clang diagnostic ignored "-Winfinite-recursion" /* rdar://38801963 */
4782 __attribute__((noreturn))
4783 static void
4784 panic_thread_test_child_spin(void * arg, wait_result_t wres)
4785 {
4786 static int panic_thread_recurse_count = 5;
4787
4788 if (panic_thread_recurse_count > 0) {
4789 panic_thread_recurse_count--;
4790 panic_thread_test_child_spin(arg, wres);
4791 }
4792
4793 semaphore_signal(sysctl_test_panic_with_thread_sem);
4794 while (1) {
4795 ;
4796 }
4797 }
4798 #pragma clang diagnostic pop
4799
4800 static void
4801 panic_thread_test_child_park(void * arg __unused, wait_result_t wres __unused)
4802 {
4803 int event;
4804
4805 assert_wait(&event, THREAD_UNINT);
4806 semaphore_signal(sysctl_test_panic_with_thread_sem);
4807 thread_block(panic_thread_test_child_park);
4808 }
4809
4810 static int
4811 sysctl_test_panic_with_thread SYSCTL_HANDLER_ARGS
4812 {
4813 #pragma unused(arg1, arg2)
4814 int rval = 0;
4815 char str[16] = { '\0' };
4816 thread_t child_thread = THREAD_NULL;
4817
4818 rval = sysctl_handle_string(oidp, str, sizeof(str), req);
4819 if (rval != 0 || !req->newptr) {
4820 return EINVAL;
4821 }
4822
4823 semaphore_create(kernel_task, &sysctl_test_panic_with_thread_sem, SYNC_POLICY_FIFO, 0);
4824
4825 /* Create thread to spin or park in continuation */
4826 if (strncmp("spin", str, strlen("spin")) == 0) {
4827 if (kernel_thread_start(panic_thread_test_child_spin, NULL, &child_thread) != KERN_SUCCESS) {
4828 semaphore_destroy(kernel_task, sysctl_test_panic_with_thread_sem);
4829 return EBUSY;
4830 }
4831 } else if (strncmp("continuation", str, strlen("continuation")) == 0) {
4832 if (kernel_thread_start(panic_thread_test_child_park, NULL, &child_thread) != KERN_SUCCESS) {
4833 semaphore_destroy(kernel_task, sysctl_test_panic_with_thread_sem);
4834 return EBUSY;
4835 }
4836 } else {
4837 semaphore_destroy(kernel_task, sysctl_test_panic_with_thread_sem);
4838 return EINVAL;
4839 }
4840
4841 semaphore_wait(sysctl_test_panic_with_thread_sem);
4842
4843 panic_with_thread_context(0, NULL, 0, child_thread, "testing panic_with_thread_context for thread %p", child_thread);
4844
4845 /* Not reached */
4846 return EINVAL;
4847 }
4848
4849 SYSCTL_PROC(_kern, OID_AUTO, test_panic_with_thread, CTLFLAG_MASKED | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLFLAG_WR | CTLTYPE_STRING,
4850 0, 0, sysctl_test_panic_with_thread, "A", "test panic flow for backtracing a different thread");
4851 #endif /* defined (__x86_64__) */
4852
4853 #endif /* DEVELOPMENT || DEBUG */
4854
4855 static int
4856 sysctl_get_owned_vmobjects SYSCTL_HANDLER_ARGS
4857 {
4858 #pragma unused(oidp, arg1, arg2)
4859
4860 /* validate */
4861 if (req->newlen != sizeof(mach_port_name_t) || req->newptr == USER_ADDR_NULL ||
4862 req->oldidx != 0 || req->newidx != 0 || req->p == NULL) {
4863 return EINVAL;
4864 }
4865
4866 int error;
4867 mach_port_name_t task_port_name;
4868 task_t task;
4869 int buffer_size = (req->oldptr != USER_ADDR_NULL) ? req->oldlen : 0;
4870 vmobject_list_output_t buffer;
4871 size_t output_size;
4872
4873 if (buffer_size) {
4874 const int min_size = sizeof(vm_object_query_data_t) + sizeof(int64_t);
4875
4876 if (buffer_size < min_size) {
4877 buffer_size = min_size;
4878 }
4879
4880 buffer = kalloc(buffer_size);
4881
4882 if (!buffer) {
4883 error = ENOMEM;
4884 goto sysctl_get_vmobject_list_exit;
4885 }
4886 } else {
4887 buffer = NULL;
4888 }
4889
4890 /* we have a "newptr" (for write) we get a task port name from the caller. */
4891 error = SYSCTL_IN(req, &task_port_name, sizeof(mach_port_name_t));
4892
4893 if (error != 0) {
4894 goto sysctl_get_vmobject_list_exit;
4895 }
4896
4897 task = port_name_to_task(task_port_name);
4898 if (task == TASK_NULL) {
4899 error = ESRCH;
4900 goto sysctl_get_vmobject_list_exit;
4901 }
4902
4903 /* copy the vmobjects and vmobject data out of the task */
4904 if (buffer_size == 0) {
4905 int64_t __size;
4906 task_copy_vmobjects(task, NULL, 0, &__size);
4907 output_size = (__size > 0) ? __size * sizeof(vm_object_query_data_t) + sizeof(int64_t) : 0;
4908 } else {
4909 task_copy_vmobjects(task, &buffer->data[0], buffer_size - sizeof(int64_t), &buffer->entries);
4910 output_size = buffer->entries * sizeof(vm_object_query_data_t) + sizeof(int64_t);
4911 }
4912
4913 task_deallocate(task);
4914
4915 error = SYSCTL_OUT(req, (char*) buffer, output_size);
4916
4917 sysctl_get_vmobject_list_exit:
4918 if (buffer) {
4919 kfree(buffer, buffer_size);
4920 }
4921
4922 return error;
4923 }
4924
4925 SYSCTL_PROC(_vm, OID_AUTO, get_owned_vmobjects, CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_WR | CTLFLAG_MASKED | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLFLAG_ANYBODY,
4926 0, 0, sysctl_get_owned_vmobjects, "A", "get owned vmobjects in task");
mirror of XNU