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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 | #include <darwintest.h> #include <dispatch/dispatch.h> #include <inttypes.h> #include <ktrace/session.h> #include <ktrace/private.h> #include <mach/dyld_kernel.h> #include <mach/host_info.h> #include <mach/mach.h> #include <mach/mach_init.h> #include <mach/task.h> #include <os/assumes.h> #include <sys/kdebug.h> #include <sys/kdebug_signpost.h> #include <sys/sysctl.h> #define KDBG_TEST_MACROS 1 #define KDBG_TEST_OLD_TIMES 2 static void assert_kdebug_test(unsigned int flavor) { size_t size = flavor; int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDTEST }; T_ASSERT_POSIX_SUCCESS( sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &size, NULL, 0), "KERN_KDTEST sysctl"); } #pragma mark kdebug syscalls #define TRACE_DEBUGID (0xfedfed00U) T_DECL(kdebug_trace_syscall, "test that kdebug_trace(2) emits correct events", T_META_ASROOT(true)) { ktrace_session_t s; __block int events_seen = 0; s = ktrace_session_create(); os_assert(s != NULL); ktrace_events_class(s, DBG_MACH, ^(__unused struct trace_point *tp){}); ktrace_events_single(s, TRACE_DEBUGID, ^void(struct trace_point *tp) { events_seen++; T_PASS("saw traced event"); T_EXPECT_EQ(tp->arg1, 1UL, "argument 1 of traced event is correct"); T_EXPECT_EQ(tp->arg2, 2UL, "argument 2 of traced event is correct"); T_EXPECT_EQ(tp->arg3, 3UL, "argument 3 of traced event is correct"); T_EXPECT_EQ(tp->arg4, 4UL, "argument 4 of traced event is correct"); ktrace_end(s, 1); }); ktrace_set_completion_handler(s, ^(void) { T_EXPECT_GE(events_seen, 1, NULL); ktrace_session_destroy(s); T_END; }); ktrace_filter_pid(s, getpid()); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); T_ASSERT_POSIX_SUCCESS(kdebug_trace(TRACE_DEBUGID, 1, 2, 3, 4), NULL); ktrace_end(s, 0); dispatch_main(); } #define SIGNPOST_SINGLE_CODE (0x10U) #define SIGNPOST_PAIRED_CODE (0x20U) T_DECL(kdebug_signpost_syscall, "test that kdebug_signpost(2) emits correct events", T_META_ASROOT(true)) { ktrace_session_t s; __block int single_seen = 0; __block int paired_seen = 0; s = ktrace_session_create(); T_ASSERT_NOTNULL(s, NULL); /* make sure to get enough events for the KDBUFWAIT to trigger */ // ktrace_events_class(s, DBG_MACH, ^(__unused struct trace_point *tp){}); ktrace_events_single(s, APPSDBG_CODE(DBG_APP_SIGNPOST, SIGNPOST_SINGLE_CODE), ^void(struct trace_point *tp) { single_seen++; T_PASS("single signpost is traced"); T_EXPECT_EQ(tp->arg1, 1UL, "argument 1 of single signpost is correct"); T_EXPECT_EQ(tp->arg2, 2UL, "argument 2 of single signpost is correct"); T_EXPECT_EQ(tp->arg3, 3UL, "argument 3 of single signpost is correct"); T_EXPECT_EQ(tp->arg4, 4UL, "argument 4 of single signpost is correct"); }); ktrace_events_single_paired(s, APPSDBG_CODE(DBG_APP_SIGNPOST, SIGNPOST_PAIRED_CODE), ^void(struct trace_point *start, struct trace_point *end) { paired_seen++; T_PASS("paired signposts are traced"); T_EXPECT_EQ(start->arg1, 5UL, "argument 1 of start signpost is correct"); T_EXPECT_EQ(start->arg2, 6UL, "argument 2 of start signpost is correct"); T_EXPECT_EQ(start->arg3, 7UL, "argument 3 of start signpost is correct"); T_EXPECT_EQ(start->arg4, 8UL, "argument 4 of start signpost is correct"); T_EXPECT_EQ(end->arg1, 9UL, "argument 1 of end signpost is correct"); T_EXPECT_EQ(end->arg2, 10UL, "argument 2 of end signpost is correct"); T_EXPECT_EQ(end->arg3, 11UL, "argument 3 of end signpost is correct"); T_EXPECT_EQ(end->arg4, 12UL, "argument 4 of end signpost is correct"); T_EXPECT_EQ(single_seen, 1, "signposts are traced in the correct order"); ktrace_end(s, 1); }); ktrace_set_completion_handler(s, ^(void) { if (single_seen == 0) { T_FAIL("did not see single tracepoint before timeout"); } if (paired_seen == 0) { T_FAIL("did not see paired tracepoints before timeout"); } ktrace_session_destroy(s); T_END; }); ktrace_filter_pid(s, getpid()); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); T_EXPECT_POSIX_SUCCESS(kdebug_signpost( SIGNPOST_SINGLE_CODE, 1, 2, 3, 4), NULL); T_EXPECT_POSIX_SUCCESS(kdebug_signpost_start( SIGNPOST_PAIRED_CODE, 5, 6, 7, 8), NULL); T_EXPECT_POSIX_SUCCESS(kdebug_signpost_end( SIGNPOST_PAIRED_CODE, 9, 10, 11, 12), NULL); ktrace_end(s, 0); dispatch_main(); } #pragma mark kdebug behaviors #define WRAPPING_EVENTS_COUNT (150000) #define TRACE_ITERATIONS (5000) #define WRAPPING_EVENTS_THRESHOLD (100) T_DECL(wrapping, "ensure that wrapping traces lost events and no events prior to the wrap", T_META_ASROOT(true), T_META_CHECK_LEAKS(false)) { ktrace_session_t s; __block int events = 0; int mib[4]; size_t needed; kbufinfo_t buf_info; int wait_wrapping_secs = (WRAPPING_EVENTS_COUNT / TRACE_ITERATIONS) + 5; int current_secs = wait_wrapping_secs; /* use sysctls manually to bypass libktrace assumptions */ mib[0] = CTL_KERN; mib[1] = KERN_KDEBUG; mib[2] = KERN_KDSETUP; mib[3] = 0; needed = 0; T_ASSERT_POSIX_SUCCESS(sysctl(mib, 3, NULL, &needed, NULL, 0), "KERN_KDSETUP"); mib[2] = KERN_KDSETBUF; mib[3] = WRAPPING_EVENTS_COUNT; T_ASSERT_POSIX_SUCCESS(sysctl(mib, 4, NULL, 0, NULL, 0), "KERN_KDSETBUF"); mib[2] = KERN_KDENABLE; mib[3] = 1; T_ASSERT_POSIX_SUCCESS(sysctl(mib, 4, NULL, 0, NULL, 0), "KERN_KDENABLE"); /* wrapping is on by default */ /* wait until wrapped */ T_LOG("waiting for trace to wrap"); mib[2] = KERN_KDGETBUF; needed = sizeof(buf_info); do { sleep(1); for (int i = 0; i < TRACE_ITERATIONS; i++) { T_QUIET; T_ASSERT_POSIX_SUCCESS(kdebug_trace(0xfefe0000, 0, 0, 0, 0), NULL); } T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctl(mib, 3, &buf_info, &needed, NULL, 0), NULL); } while (!(buf_info.flags & KDBG_WRAPPED) && --current_secs > 0); T_ASSERT_TRUE(buf_info.flags & KDBG_WRAPPED, "trace wrapped (after %d seconds within %d second timeout)", wait_wrapping_secs - current_secs, wait_wrapping_secs); s = ktrace_session_create(); T_QUIET; T_ASSERT_NOTNULL(s, NULL); T_QUIET; T_ASSERT_POSIX_ZERO(ktrace_set_use_existing(s), NULL); ktrace_events_all(s, ^void(struct trace_point *tp) { if (events == 0) { T_EXPECT_EQ(tp->debugid, (unsigned int)TRACE_LOST_EVENTS, "first event's debugid 0x%08x (%s) should be TRACE_LOST_EVENTS", tp->debugid, ktrace_name_for_eventid(s, tp->debugid & KDBG_EVENTID_MASK)); } else { T_QUIET; T_EXPECT_NE(tp->debugid, (unsigned int)TRACE_LOST_EVENTS, "event debugid 0x%08x (%s) should not be TRACE_LOST_EVENTS", tp->debugid, ktrace_name_for_eventid(s, tp->debugid & KDBG_EVENTID_MASK)); } events++; if (events > WRAPPING_EVENTS_THRESHOLD) { ktrace_end(s, 1); } }); ktrace_set_completion_handler(s, ^(void) { ktrace_session_destroy(s); T_END; }); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); dispatch_main(); } T_DECL(reject_old_events, "ensure that kdebug rejects events from before tracing began", T_META_ASROOT(true), T_META_CHECK_LEAKS(false)) { __block uint64_t event_horizon_ts; __block int events = 0; ktrace_session_t s = ktrace_session_create(); T_QUIET; T_ASSERT_NOTNULL(s, "ktrace_session_create"); ktrace_events_range(s, KDBG_EVENTID(DBG_BSD, DBG_BSD_KDEBUG_TEST, 0), KDBG_EVENTID(DBG_BSD + 1, 0, 0), ^(struct trace_point *tp) { events++; T_EXPECT_GT(tp->timestamp, event_horizon_ts, "events in trace should be from after tracing began"); }); ktrace_set_completion_handler(s, ^{ T_EXPECT_EQ(events, 2, "should see only two events"); ktrace_session_destroy(s); T_END; }); event_horizon_ts = mach_absolute_time(); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); /* first, try an old event at the beginning of trace */ assert_kdebug_test(KDBG_TEST_OLD_TIMES); /* after a good event has been traced, old events should be rejected */ assert_kdebug_test(KDBG_TEST_OLD_TIMES); ktrace_end(s, 0); dispatch_main(); } #define ORDERING_TIMEOUT_SEC 5 T_DECL(ascending_time_order, "ensure that kdebug events are in ascending order based on time", T_META_ASROOT(true), T_META_CHECK_LEAKS(false)) { __block uint64_t prev_ts = 0; __block uint32_t prev_debugid = 0; __block unsigned int prev_cpu = 0; __block bool in_order = true; ktrace_session_t s = ktrace_session_create(); T_QUIET; T_ASSERT_NOTNULL(s, "ktrace_session_create"); ktrace_events_all(s, ^(struct trace_point *tp) { if (tp->timestamp < prev_ts) { in_order = false; T_FAIL("found timestamps out of order"); T_LOG("%" PRIu64 ": %#" PRIx32 " (cpu %d)", prev_ts, prev_debugid, prev_cpu); T_LOG("%" PRIu64 ": %#" PRIx32 " (cpu %d)", tp->timestamp, tp->debugid, tp->cpuid); } }); ktrace_set_completion_handler(s, ^{ ktrace_session_destroy(s); T_EXPECT_TRUE(in_order, "event timestamps were in-order"); T_END; }); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); /* try to inject old timestamps into trace */ assert_kdebug_test(KDBG_TEST_OLD_TIMES); dispatch_after(dispatch_time(DISPATCH_TIME_NOW, ORDERING_TIMEOUT_SEC * NSEC_PER_SEC), dispatch_get_main_queue(), ^{ T_LOG("ending test after timeout"); ktrace_end(s, 1); }); dispatch_main(); } #pragma mark dyld tracing __attribute__((aligned(8))) static const char map_uuid[16] = "map UUID"; __attribute__((aligned(8))) static const char unmap_uuid[16] = "unmap UUID"; __attribute__((aligned(8))) static const char sc_uuid[16] = "shared UUID"; static fsid_t map_fsid = { .val = { 42, 43 } }; static fsid_t unmap_fsid = { .val = { 44, 45 } }; static fsid_t sc_fsid = { .val = { 46, 47 } }; static fsobj_id_t map_fsobjid = { .fid_objno = 42, .fid_generation = 43 }; static fsobj_id_t unmap_fsobjid = { .fid_objno = 44, .fid_generation = 45 }; static fsobj_id_t sc_fsobjid = { .fid_objno = 46, .fid_generation = 47 }; #define MAP_LOAD_ADDR 0xabadcafe #define UNMAP_LOAD_ADDR 0xfeedface #define SC_LOAD_ADDR 0xfedfaced __unused static void expect_dyld_image_info(struct trace_point *tp, const uint64_t *exp_uuid, uint64_t exp_load_addr, fsid_t *exp_fsid, fsobj_id_t *exp_fsobjid, int order) { #if defined(__LP64__) if (order == 0) { uint64_t uuid[2]; uint64_t load_addr; fsid_t fsid; uuid[0] = (uint64_t)tp->arg1; uuid[1] = (uint64_t)tp->arg2; load_addr = (uint64_t)tp->arg3; fsid.val[0] = (int32_t)(tp->arg4 & UINT32_MAX); fsid.val[1] = (int32_t)((uint64_t)tp->arg4 >> 32); T_QUIET; T_EXPECT_EQ(uuid[0], exp_uuid[0], NULL); T_QUIET; T_EXPECT_EQ(uuid[1], exp_uuid[1], NULL); T_QUIET; T_EXPECT_EQ(load_addr, exp_load_addr, NULL); T_QUIET; T_EXPECT_EQ(fsid.val[0], exp_fsid->val[0], NULL); T_QUIET; T_EXPECT_EQ(fsid.val[1], exp_fsid->val[1], NULL); } else if (order == 1) { fsobj_id_t fsobjid; fsobjid.fid_objno = (uint32_t)(tp->arg1 & UINT32_MAX); fsobjid.fid_generation = (uint32_t)((uint64_t)tp->arg1 >> 32); T_QUIET; T_EXPECT_EQ(fsobjid.fid_objno, exp_fsobjid->fid_objno, NULL); T_QUIET; T_EXPECT_EQ(fsobjid.fid_generation, exp_fsobjid->fid_generation, NULL); } else { T_ASSERT_FAIL("unrecognized order of events %d", order); } #else /* defined(__LP64__) */ if (order == 0) { uint32_t uuid[4]; uuid[0] = (uint32_t)tp->arg1; uuid[1] = (uint32_t)tp->arg2; uuid[2] = (uint32_t)tp->arg3; uuid[3] = (uint32_t)tp->arg4; T_QUIET; T_EXPECT_EQ(uuid[0], (uint32_t)exp_uuid[0], NULL); T_QUIET; T_EXPECT_EQ(uuid[1], (uint32_t)(exp_uuid[0] >> 32), NULL); T_QUIET; T_EXPECT_EQ(uuid[2], (uint32_t)exp_uuid[1], NULL); T_QUIET; T_EXPECT_EQ(uuid[3], (uint32_t)(exp_uuid[1] >> 32), NULL); } else if (order == 1) { uint32_t load_addr; fsid_t fsid; fsobj_id_t fsobjid; load_addr = (uint32_t)tp->arg1; fsid.val[0] = (int32_t)tp->arg2; fsid.val[1] = (int32_t)tp->arg3; fsobjid.fid_objno = (uint32_t)tp->arg4; T_QUIET; T_EXPECT_EQ(load_addr, (uint32_t)exp_load_addr, NULL); T_QUIET; T_EXPECT_EQ(fsid.val[0], exp_fsid->val[0], NULL); T_QUIET; T_EXPECT_EQ(fsid.val[1], exp_fsid->val[1], NULL); T_QUIET; T_EXPECT_EQ(fsobjid.fid_objno, exp_fsobjid->fid_objno, NULL); } else if (order == 2) { fsobj_id_t fsobjid; fsobjid.fid_generation = tp->arg1; T_QUIET; T_EXPECT_EQ(fsobjid.fid_generation, exp_fsobjid->fid_generation, NULL); } else { T_ASSERT_FAIL("unrecognized order of events %d", order); } #endif /* defined(__LP64__) */ } #if defined(__LP64__) #define DYLD_CODE_OFFSET (0) #define DYLD_EVENTS (2) #else #define DYLD_CODE_OFFSET (2) #define DYLD_EVENTS (3) #endif static void expect_dyld_events(ktrace_session_t s, const char *name, uint32_t base_code, const char *exp_uuid, uint64_t exp_load_addr, fsid_t *exp_fsid, fsobj_id_t *exp_fsobjid, uint8_t *saw_events) { for (int i = 0; i < DYLD_EVENTS; i++) { ktrace_events_single(s, KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + DYLD_CODE_OFFSET + (unsigned int)i), ^(struct trace_point *tp) { T_LOG("checking %s event %c", name, 'A' + i); expect_dyld_image_info(tp, (const void *)exp_uuid, exp_load_addr, exp_fsid, exp_fsobjid, i); *saw_events |= (1U << i); }); } } T_DECL(dyld_events, "test that dyld registering libraries emits events", T_META_ASROOT(true)) { ktrace_session_t s; dyld_kernel_image_info_t info; /* * Use pointers instead of __block variables in order to use these variables * in the completion block below _and_ pass pointers to them to the * expect_dyld_events function. */ uint8_t saw_events[3] = { 0 }; uint8_t *saw_mapping = &(saw_events[0]); uint8_t *saw_unmapping = &(saw_events[1]); uint8_t *saw_shared_cache = &(saw_events[2]); s = ktrace_session_create(); T_ASSERT_NOTNULL(s, NULL); T_ASSERT_POSIX_ZERO(ktrace_filter_pid(s, getpid()), NULL); expect_dyld_events(s, "mapping", DBG_DYLD_UUID_MAP_A, map_uuid, MAP_LOAD_ADDR, &map_fsid, &map_fsobjid, saw_mapping); expect_dyld_events(s, "unmapping", DBG_DYLD_UUID_UNMAP_A, unmap_uuid, UNMAP_LOAD_ADDR, &unmap_fsid, &unmap_fsobjid, saw_unmapping); expect_dyld_events(s, "shared cache", DBG_DYLD_UUID_SHARED_CACHE_A, sc_uuid, SC_LOAD_ADDR, &sc_fsid, &sc_fsobjid, saw_shared_cache); ktrace_set_completion_handler(s, ^(void) { T_EXPECT_EQ(__builtin_popcount(*saw_mapping), DYLD_EVENTS, NULL); T_EXPECT_EQ(__builtin_popcount(*saw_unmapping), DYLD_EVENTS, NULL); T_EXPECT_EQ(__builtin_popcount(*saw_shared_cache), DYLD_EVENTS, NULL); ktrace_session_destroy(s); T_END; }); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); info.load_addr = MAP_LOAD_ADDR; memcpy(info.uuid, map_uuid, sizeof(info.uuid)); info.fsid = map_fsid; info.fsobjid = map_fsobjid; T_EXPECT_MACH_SUCCESS(task_register_dyld_image_infos(mach_task_self(), &info, 1), NULL); info.load_addr = UNMAP_LOAD_ADDR; memcpy(info.uuid, unmap_uuid, sizeof(info.uuid)); info.fsid = unmap_fsid; info.fsobjid = unmap_fsobjid; T_EXPECT_MACH_SUCCESS(task_unregister_dyld_image_infos(mach_task_self(), &info, 1), NULL); info.load_addr = SC_LOAD_ADDR; memcpy(info.uuid, sc_uuid, sizeof(info.uuid)); info.fsid = sc_fsid; info.fsobjid = sc_fsobjid; T_EXPECT_MACH_SUCCESS(task_register_dyld_shared_cache_image_info( mach_task_self(), info, FALSE, FALSE), NULL); ktrace_end(s, 0); dispatch_main(); } #pragma mark kdebug kernel macros #define EXP_KERNEL_EVENTS 5U static const uint32_t dev_evts[EXP_KERNEL_EVENTS] = { BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 0), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 1), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 2), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 3), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 4), }; static const uint32_t rel_evts[EXP_KERNEL_EVENTS] = { BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 5), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 6), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 7), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 8), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 9), }; static const uint32_t filt_evts[EXP_KERNEL_EVENTS] = { BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 10), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 11), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 12), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 13), BSDDBG_CODE(DBG_BSD_KDEBUG_TEST, 14), }; static bool is_development_kernel(void) { static dispatch_once_t is_development_once; static bool is_development; dispatch_once(&is_development_once, ^(void) { int dev; size_t dev_size = sizeof(dev); T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.development", &dev, &dev_size, NULL, 0), NULL); is_development = (dev != 0); }); return is_development; } static void expect_event(struct trace_point *tp, unsigned int *events, const uint32_t *event_ids, size_t event_ids_len) { unsigned int event_idx = *events; bool event_found = false; size_t i; for (i = 0; i < event_ids_len; i++) { if (event_ids[i] == (tp->debugid & KDBG_EVENTID_MASK)) { T_LOG("found event 0x%x", tp->debugid); event_found = true; } } if (!event_found) { return; } *events += 1; for (i = 0; i < event_idx; i++) { T_QUIET; T_EXPECT_EQ(((uintptr_t *)&tp->arg1)[i], (uintptr_t)i + 1, NULL); } for (; i < 4; i++) { T_QUIET; T_EXPECT_EQ(((uintptr_t *)&tp->arg1)[i], (uintptr_t)0, NULL); } } static void expect_release_event(struct trace_point *tp, unsigned int *events) { expect_event(tp, events, rel_evts, sizeof(rel_evts) / sizeof(rel_evts[0])); } static void expect_development_event(struct trace_point *tp, unsigned int *events) { expect_event(tp, events, dev_evts, sizeof(dev_evts) / sizeof(dev_evts[0])); } static void expect_filtered_event(struct trace_point *tp, unsigned int *events) { expect_event(tp, events, filt_evts, sizeof(filt_evts) / sizeof(filt_evts[0])); } T_DECL(kernel_events, "ensure kernel macros work", T_META_ASROOT(true)) { ktrace_session_t s; s = ktrace_session_create(); T_QUIET; T_ASSERT_NOTNULL(s, NULL); __block unsigned int dev_seen = 0; __block unsigned int rel_seen = 0; __block unsigned int filt_seen = 0; ktrace_events_range(s, KDBG_EVENTID(DBG_BSD, DBG_BSD_KDEBUG_TEST, 0), KDBG_EVENTID(DBG_BSD + 1, 0, 0), ^(struct trace_point *tp) { expect_development_event(tp, &dev_seen); expect_release_event(tp, &rel_seen); expect_filtered_event(tp, &filt_seen); }); ktrace_set_completion_handler(s, ^(void) { /* * Development-only events are only filtered if running on an embedded * OS. */ unsigned int dev_exp; #if TARGET_OS_EMBEDDED dev_exp = is_development_kernel() ? EXP_KERNEL_EVENTS : 0U; #else dev_exp = EXP_KERNEL_EVENTS; #endif T_EXPECT_EQ(rel_seen, EXP_KERNEL_EVENTS, "release and development events seen"); T_EXPECT_EQ(dev_seen, dev_exp, "development-only events seen/not seen"); T_EXPECT_EQ(filt_seen, dev_exp, "filter-only events seen"); ktrace_session_destroy(s); T_END; }); ktrace_filter_pid(s, getpid()); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); assert_kdebug_test(KDBG_TEST_MACROS); ktrace_end(s, 0); dispatch_main(); } T_DECL(kernel_events_filtered, "ensure that the filtered kernel macros work", T_META_ASROOT(true)) { ktrace_session_t s; s = ktrace_session_create(); T_QUIET; T_ASSERT_NOTNULL(s, NULL); __block unsigned int dev_seen = 0; __block unsigned int rel_seen = 0; __block unsigned int filt_seen = 0; ktrace_events_all(s, ^(struct trace_point *tp) { expect_development_event(tp, &dev_seen); expect_release_event(tp, &rel_seen); /* to make sure no filtered events are emitted */ expect_filtered_event(tp, &filt_seen); }); ktrace_set_completion_handler(s, ^(void) { ktrace_session_destroy(s); T_EXPECT_EQ(rel_seen, EXP_KERNEL_EVENTS, NULL); #if defined(__arm__) || defined(__arm64__) T_EXPECT_EQ(dev_seen, is_development_kernel() ? EXP_KERNEL_EVENTS : 0U, NULL); #else T_EXPECT_EQ(dev_seen, EXP_KERNEL_EVENTS, NULL); #endif /* defined(__arm__) || defined(__arm64__) */ T_EXPECT_EQ(filt_seen, 0U, NULL); T_END; }); T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL); assert_kdebug_test(KDBG_TEST_MACROS); ktrace_end(s, 0); dispatch_main(); } |