1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "dumpstate" 18 19 #include "dumpstate.h" 20 21 #include <dirent.h> 22 #include <fcntl.h> 23 #include <libgen.h> 24 #include <math.h> 25 #include <poll.h> 26 #include <signal.h> 27 #include <stdarg.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <sys/capability.h> 32 #include <sys/inotify.h> 33 #include <sys/klog.h> 34 #include <sys/prctl.h> 35 #include <sys/stat.h> 36 #include <sys/time.h> 37 #include <sys/wait.h> 38 #include <time.h> 39 #include <unistd.h> 40 41 #include <set> 42 #include <string> 43 #include <vector> 44 45 #include <android-base/file.h> 46 #include <android-base/properties.h> 47 #include <android-base/stringprintf.h> 48 #include <android-base/strings.h> 49 #include <android/hidl/manager/1.0/IServiceManager.h> 50 #include <cutils/properties.h> 51 #include <cutils/sockets.h> 52 #include <debuggerd/client.h> 53 #include <log/log.h> 54 #include <private/android_filesystem_config.h> 55 56 #include "DumpstateInternal.h" 57 58 // TODO: remove once moved to namespace 59 using android::os::dumpstate::CommandOptions; 60 using android::os::dumpstate::DumpFileToFd; 61 using android::os::dumpstate::PropertiesHelper; 62 63 // Keep in sync with 64 // frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java 65 static const int TRACE_DUMP_TIMEOUT_MS = 10000; // 10 seconds 66 67 /* Most simple commands have 10 as timeout, so 5 is a good estimate */ 68 static const int32_t WEIGHT_FILE = 5; 69 70 // TODO: temporary variables and functions used during C++ refactoring 71 static Dumpstate& ds = Dumpstate::GetInstance(); 72 static int RunCommand(const std::string& title, const std::vector<std::string>& full_command, 73 const CommandOptions& options = CommandOptions::DEFAULT) { 74 return ds.RunCommand(title, full_command, options); 75 } 76 77 /* list of native processes to include in the native dumps */ 78 // This matches the /proc/pid/exe link instead of /proc/pid/cmdline. 79 static const char* native_processes_to_dump[] = { 80 "/system/bin/audioserver", 81 "/system/bin/cameraserver", 82 "/system/bin/drmserver", 83 "/system/bin/mediadrmserver", 84 "/system/bin/mediaextractor", // media.extractor 85 "/system/bin/mediaserver", 86 "/system/bin/sdcard", 87 "/system/bin/surfaceflinger", 88 "/system/bin/vehicle_network_service", 89 "/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec 90 NULL, 91 }; 92 93 /* list of hal interface to dump containing process during native dumps */ 94 static const char* hal_interfaces_to_dump[] { 95 "android.hardware.audio (at) 2.0::IDevicesFactory", 96 "android.hardware.bluetooth (at) 1.0::IBluetoothHci", 97 "android.hardware.camera.provider (at) 2.4::ICameraProvider", 98 "android.hardware.graphics.composer (at) 2.1::IComposer", 99 "android.hardware.vr (at) 1.0::IVr", 100 "android.hardware.media.omx (at) 1.0::IOmx", 101 NULL, 102 }; 103 104 // Reasonable value for max stats. 105 static const int STATS_MAX_N_RUNS = 1000; 106 static const long STATS_MAX_AVERAGE = 100000; 107 108 CommandOptions Dumpstate::DEFAULT_DUMPSYS = CommandOptions::WithTimeout(30).Build(); 109 110 Dumpstate::Dumpstate(const std::string& version) 111 : pid_(getpid()), version_(version), now_(time(nullptr)) { 112 } 113 114 Dumpstate& Dumpstate::GetInstance() { 115 static Dumpstate singleton_(android::base::GetProperty("dumpstate.version", VERSION_CURRENT)); 116 return singleton_; 117 } 118 119 DurationReporter::DurationReporter(const std::string& title, bool log_only) 120 : title_(title), log_only_(log_only) { 121 if (!title_.empty()) { 122 started_ = Nanotime(); 123 } 124 } 125 126 DurationReporter::~DurationReporter() { 127 if (!title_.empty()) { 128 uint64_t elapsed = Nanotime() - started_; 129 if (log_only_) { 130 MYLOGD("Duration of '%s': %.3fs\n", title_.c_str(), (float)elapsed / NANOS_PER_SEC); 131 } else { 132 // Use "Yoda grammar" to make it easier to grep|sort sections. 133 printf("------ %.3fs was the duration of '%s' ------\n", (float)elapsed / NANOS_PER_SEC, 134 title_.c_str()); 135 } 136 } 137 } 138 139 const int32_t Progress::kDefaultMax = 5000; 140 141 Progress::Progress(const std::string& path) : Progress(Progress::kDefaultMax, 1.1, path) { 142 } 143 144 Progress::Progress(int32_t initial_max, int32_t progress, float growth_factor) 145 : Progress(initial_max, growth_factor, "") { 146 progress_ = progress; 147 } 148 149 Progress::Progress(int32_t initial_max, float growth_factor, const std::string& path) 150 : initial_max_(initial_max), 151 progress_(0), 152 max_(initial_max), 153 growth_factor_(growth_factor), 154 n_runs_(0), 155 average_max_(0), 156 path_(path) { 157 if (!path_.empty()) { 158 Load(); 159 } 160 } 161 162 void Progress::Load() { 163 MYLOGD("Loading stats from %s\n", path_.c_str()); 164 std::string content; 165 if (!android::base::ReadFileToString(path_, &content)) { 166 MYLOGI("Could not read stats from %s; using max of %d\n", path_.c_str(), max_); 167 return; 168 } 169 if (content.empty()) { 170 MYLOGE("No stats (empty file) on %s; using max of %d\n", path_.c_str(), max_); 171 return; 172 } 173 std::vector<std::string> lines = android::base::Split(content, "\n"); 174 175 if (lines.size() < 1) { 176 MYLOGE("Invalid stats on file %s: not enough lines (%d). Using max of %d\n", path_.c_str(), 177 (int)lines.size(), max_); 178 return; 179 } 180 char* ptr; 181 n_runs_ = strtol(lines[0].c_str(), &ptr, 10); 182 average_max_ = strtol(ptr, nullptr, 10); 183 if (n_runs_ <= 0 || average_max_ <= 0 || n_runs_ > STATS_MAX_N_RUNS || 184 average_max_ > STATS_MAX_AVERAGE) { 185 MYLOGE("Invalid stats line on file %s: %s\n", path_.c_str(), lines[0].c_str()); 186 initial_max_ = Progress::kDefaultMax; 187 } else { 188 initial_max_ = average_max_; 189 } 190 max_ = initial_max_; 191 192 MYLOGI("Average max progress: %d in %d runs; estimated max: %d\n", average_max_, n_runs_, max_); 193 } 194 195 void Progress::Save() { 196 int32_t total = n_runs_ * average_max_ + progress_; 197 int32_t runs = n_runs_ + 1; 198 int32_t average = floor(((float)total) / runs); 199 MYLOGI("Saving stats (total=%d, runs=%d, average=%d) on %s\n", total, runs, average, 200 path_.c_str()); 201 if (path_.empty()) { 202 return; 203 } 204 205 std::string content = android::base::StringPrintf("%d %d\n", runs, average); 206 if (!android::base::WriteStringToFile(content, path_)) { 207 MYLOGE("Could not save stats on %s\n", path_.c_str()); 208 } 209 } 210 211 int32_t Progress::Get() const { 212 return progress_; 213 } 214 215 bool Progress::Inc(int32_t delta) { 216 bool changed = false; 217 if (delta >= 0) { 218 progress_ += delta; 219 if (progress_ > max_) { 220 int32_t old_max = max_; 221 max_ = floor((float)progress_ * growth_factor_); 222 MYLOGD("Adjusting max progress from %d to %d\n", old_max, max_); 223 changed = true; 224 } 225 } 226 return changed; 227 } 228 229 int32_t Progress::GetMax() const { 230 return max_; 231 } 232 233 int32_t Progress::GetInitialMax() const { 234 return initial_max_; 235 } 236 237 void Progress::Dump(int fd, const std::string& prefix) const { 238 const char* pr = prefix.c_str(); 239 dprintf(fd, "%sprogress: %d\n", pr, progress_); 240 dprintf(fd, "%smax: %d\n", pr, max_); 241 dprintf(fd, "%sinitial_max: %d\n", pr, initial_max_); 242 dprintf(fd, "%sgrowth_factor: %0.2f\n", pr, growth_factor_); 243 dprintf(fd, "%spath: %s\n", pr, path_.c_str()); 244 dprintf(fd, "%sn_runs: %d\n", pr, n_runs_); 245 dprintf(fd, "%saverage_max: %d\n", pr, average_max_); 246 } 247 248 bool Dumpstate::IsZipping() const { 249 return zip_writer_ != nullptr; 250 } 251 252 std::string Dumpstate::GetPath(const std::string& suffix) const { 253 return android::base::StringPrintf("%s/%s-%s%s", bugreport_dir_.c_str(), base_name_.c_str(), 254 name_.c_str(), suffix.c_str()); 255 } 256 257 void Dumpstate::SetProgress(std::unique_ptr<Progress> progress) { 258 progress_ = std::move(progress); 259 } 260 261 void for_each_userid(void (*func)(int), const char *header) { 262 std::string title = header == nullptr ? "for_each_userid" : android::base::StringPrintf( 263 "for_each_userid(%s)", header); 264 DurationReporter duration_reporter(title); 265 if (PropertiesHelper::IsDryRun()) return; 266 267 DIR *d; 268 struct dirent *de; 269 270 if (header) printf("\n------ %s ------\n", header); 271 func(0); 272 273 if (!(d = opendir("/data/system/users"))) { 274 printf("Failed to open /data/system/users (%s)\n", strerror(errno)); 275 return; 276 } 277 278 while ((de = readdir(d))) { 279 int userid; 280 if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { 281 continue; 282 } 283 func(userid); 284 } 285 286 closedir(d); 287 } 288 289 static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { 290 DIR *d; 291 struct dirent *de; 292 293 if (!(d = opendir("/proc"))) { 294 printf("Failed to open /proc (%s)\n", strerror(errno)); 295 return; 296 } 297 298 if (header) printf("\n------ %s ------\n", header); 299 while ((de = readdir(d))) { 300 int pid; 301 int fd; 302 char cmdpath[255]; 303 char cmdline[255]; 304 305 if (!(pid = atoi(de->d_name))) { 306 continue; 307 } 308 309 memset(cmdline, 0, sizeof(cmdline)); 310 311 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/cmdline", pid); 312 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 313 TEMP_FAILURE_RETRY(read(fd, cmdline, sizeof(cmdline) - 2)); 314 close(fd); 315 if (cmdline[0]) { 316 helper(pid, cmdline, arg); 317 continue; 318 } 319 } 320 321 // if no cmdline, a kernel thread has comm 322 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/comm", pid); 323 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 324 TEMP_FAILURE_RETRY(read(fd, cmdline + 1, sizeof(cmdline) - 4)); 325 close(fd); 326 if (cmdline[1]) { 327 cmdline[0] = '['; 328 size_t len = strcspn(cmdline, "\f\b\r\n"); 329 cmdline[len] = ']'; 330 cmdline[len+1] = '\0'; 331 } 332 } 333 if (!cmdline[0]) { 334 strcpy(cmdline, "N/A"); 335 } 336 helper(pid, cmdline, arg); 337 } 338 339 closedir(d); 340 } 341 342 static void for_each_pid_helper(int pid, const char *cmdline, void *arg) { 343 for_each_pid_func *func = (for_each_pid_func*) arg; 344 func(pid, cmdline); 345 } 346 347 void for_each_pid(for_each_pid_func func, const char *header) { 348 std::string title = header == nullptr ? "for_each_pid" 349 : android::base::StringPrintf("for_each_pid(%s)", header); 350 DurationReporter duration_reporter(title); 351 if (PropertiesHelper::IsDryRun()) return; 352 353 __for_each_pid(for_each_pid_helper, header, (void *) func); 354 } 355 356 static void for_each_tid_helper(int pid, const char *cmdline, void *arg) { 357 DIR *d; 358 struct dirent *de; 359 char taskpath[255]; 360 for_each_tid_func *func = (for_each_tid_func *) arg; 361 362 snprintf(taskpath, sizeof(taskpath), "/proc/%d/task", pid); 363 364 if (!(d = opendir(taskpath))) { 365 printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); 366 return; 367 } 368 369 func(pid, pid, cmdline); 370 371 while ((de = readdir(d))) { 372 int tid; 373 int fd; 374 char commpath[255]; 375 char comm[255]; 376 377 if (!(tid = atoi(de->d_name))) { 378 continue; 379 } 380 381 if (tid == pid) 382 continue; 383 384 snprintf(commpath, sizeof(commpath), "/proc/%d/comm", tid); 385 memset(comm, 0, sizeof(comm)); 386 if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { 387 strcpy(comm, "N/A"); 388 } else { 389 char *c; 390 TEMP_FAILURE_RETRY(read(fd, comm, sizeof(comm) - 2)); 391 close(fd); 392 393 c = strrchr(comm, '\n'); 394 if (c) { 395 *c = '\0'; 396 } 397 } 398 func(pid, tid, comm); 399 } 400 401 closedir(d); 402 } 403 404 void for_each_tid(for_each_tid_func func, const char *header) { 405 std::string title = header == nullptr ? "for_each_tid" 406 : android::base::StringPrintf("for_each_tid(%s)", header); 407 DurationReporter duration_reporter(title); 408 409 if (PropertiesHelper::IsDryRun()) return; 410 411 __for_each_pid(for_each_tid_helper, header, (void *) func); 412 } 413 414 void show_wchan(int pid, int tid, const char *name) { 415 if (PropertiesHelper::IsDryRun()) return; 416 417 char path[255]; 418 char buffer[255]; 419 int fd, ret, save_errno; 420 char name_buffer[255]; 421 422 memset(buffer, 0, sizeof(buffer)); 423 424 snprintf(path, sizeof(path), "/proc/%d/wchan", tid); 425 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 426 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 427 return; 428 } 429 430 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 431 save_errno = errno; 432 close(fd); 433 434 if (ret < 0) { 435 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 436 return; 437 } 438 439 snprintf(name_buffer, sizeof(name_buffer), "%*s%s", 440 pid == tid ? 0 : 3, "", name); 441 442 printf("%-7d %-32s %s\n", tid, name_buffer, buffer); 443 444 return; 445 } 446 447 // print time in centiseconds 448 static void snprcent(char *buffer, size_t len, size_t spc, 449 unsigned long long time) { 450 static long hz; // cache discovered hz 451 452 if (hz <= 0) { 453 hz = sysconf(_SC_CLK_TCK); 454 if (hz <= 0) { 455 hz = 1000; 456 } 457 } 458 459 // convert to centiseconds 460 time = (time * 100 + (hz / 2)) / hz; 461 462 char str[16]; 463 464 snprintf(str, sizeof(str), " %llu.%02u", 465 time / 100, (unsigned)(time % 100)); 466 size_t offset = strlen(buffer); 467 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 468 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 469 } 470 471 // print permille as a percent 472 static void snprdec(char *buffer, size_t len, size_t spc, unsigned permille) { 473 char str[16]; 474 475 snprintf(str, sizeof(str), " %u.%u%%", permille / 10, permille % 10); 476 size_t offset = strlen(buffer); 477 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 478 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 479 } 480 481 void show_showtime(int pid, const char *name) { 482 if (PropertiesHelper::IsDryRun()) return; 483 484 char path[255]; 485 char buffer[1023]; 486 int fd, ret, save_errno; 487 488 memset(buffer, 0, sizeof(buffer)); 489 490 snprintf(path, sizeof(path), "/proc/%d/stat", pid); 491 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 492 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 493 return; 494 } 495 496 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 497 save_errno = errno; 498 close(fd); 499 500 if (ret < 0) { 501 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 502 return; 503 } 504 505 // field 14 is utime 506 // field 15 is stime 507 // field 42 is iotime 508 unsigned long long utime = 0, stime = 0, iotime = 0; 509 if (sscanf(buffer, 510 "%*u %*s %*s %*d %*d %*d %*d %*d %*d %*d %*d " 511 "%*d %*d %llu %llu %*d %*d %*d %*d %*d %*d " 512 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " 513 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %llu ", 514 &utime, &stime, &iotime) != 3) { 515 return; 516 } 517 518 unsigned long long total = utime + stime; 519 if (!total) { 520 return; 521 } 522 523 unsigned permille = (iotime * 1000 + (total / 2)) / total; 524 if (permille > 1000) { 525 permille = 1000; 526 } 527 528 // try to beautify and stabilize columns at <80 characters 529 snprintf(buffer, sizeof(buffer), "%-6d%s", pid, name); 530 if ((name[0] != '[') || utime) { 531 snprcent(buffer, sizeof(buffer), 57, utime); 532 } 533 snprcent(buffer, sizeof(buffer), 65, stime); 534 if ((name[0] != '[') || iotime) { 535 snprcent(buffer, sizeof(buffer), 73, iotime); 536 } 537 if (iotime) { 538 snprdec(buffer, sizeof(buffer), 79, permille); 539 } 540 puts(buffer); // adds a trailing newline 541 542 return; 543 } 544 545 void do_dmesg() { 546 const char *title = "KERNEL LOG (dmesg)"; 547 DurationReporter duration_reporter(title); 548 printf("------ %s ------\n", title); 549 550 if (PropertiesHelper::IsDryRun()) return; 551 552 /* Get size of kernel buffer */ 553 int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); 554 if (size <= 0) { 555 printf("Unexpected klogctl return value: %d\n\n", size); 556 return; 557 } 558 char *buf = (char *) malloc(size + 1); 559 if (buf == NULL) { 560 printf("memory allocation failed\n\n"); 561 return; 562 } 563 int retval = klogctl(KLOG_READ_ALL, buf, size); 564 if (retval < 0) { 565 printf("klogctl failure\n\n"); 566 free(buf); 567 return; 568 } 569 buf[retval] = '\0'; 570 printf("%s\n\n", buf); 571 free(buf); 572 return; 573 } 574 575 void do_showmap(int pid, const char *name) { 576 char title[255]; 577 char arg[255]; 578 579 snprintf(title, sizeof(title), "SHOW MAP %d (%s)", pid, name); 580 snprintf(arg, sizeof(arg), "%d", pid); 581 RunCommand(title, {"showmap", "-q", arg}, CommandOptions::AS_ROOT); 582 } 583 584 int Dumpstate::DumpFile(const std::string& title, const std::string& path) { 585 DurationReporter duration_reporter(title); 586 587 int status = DumpFileToFd(STDOUT_FILENO, title, path); 588 589 UpdateProgress(WEIGHT_FILE); 590 591 return status; 592 } 593 594 int read_file_as_long(const char *path, long int *output) { 595 int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 596 if (fd < 0) { 597 int err = errno; 598 MYLOGE("Error opening file descriptor for %s: %s\n", path, strerror(err)); 599 return -1; 600 } 601 char buffer[50]; 602 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 603 if (bytes_read == -1) { 604 MYLOGE("Error reading file %s: %s\n", path, strerror(errno)); 605 return -2; 606 } 607 if (bytes_read == 0) { 608 MYLOGE("File %s is empty\n", path); 609 return -3; 610 } 611 *output = atoi(buffer); 612 return 0; 613 } 614 615 /* calls skip to gate calling dump_from_fd recursively 616 * in the specified directory. dump_from_fd defaults to 617 * dump_file_from_fd above when set to NULL. skip defaults 618 * to false when set to NULL. dump_from_fd will always be 619 * called with title NULL. 620 */ 621 int dump_files(const std::string& title, const char* dir, bool (*skip)(const char* path), 622 int (*dump_from_fd)(const char* title, const char* path, int fd)) { 623 DurationReporter duration_reporter(title); 624 DIR *dirp; 625 struct dirent *d; 626 char *newpath = NULL; 627 const char *slash = "/"; 628 int fd, retval = 0; 629 630 if (!title.empty()) { 631 printf("------ %s (%s) ------\n", title.c_str(), dir); 632 } 633 if (PropertiesHelper::IsDryRun()) return 0; 634 635 if (dir[strlen(dir) - 1] == '/') { 636 ++slash; 637 } 638 dirp = opendir(dir); 639 if (dirp == NULL) { 640 retval = -errno; 641 MYLOGE("%s: %s\n", dir, strerror(errno)); 642 return retval; 643 } 644 645 if (!dump_from_fd) { 646 dump_from_fd = dump_file_from_fd; 647 } 648 for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { 649 if ((d->d_name[0] == '.') 650 && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) 651 || (d->d_name[1] == '\0'))) { 652 continue; 653 } 654 asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, 655 (d->d_type == DT_DIR) ? "/" : ""); 656 if (!newpath) { 657 retval = -errno; 658 continue; 659 } 660 if (skip && (*skip)(newpath)) { 661 continue; 662 } 663 if (d->d_type == DT_DIR) { 664 int ret = dump_files("", newpath, skip, dump_from_fd); 665 if (ret < 0) { 666 retval = ret; 667 } 668 continue; 669 } 670 fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 671 if (fd < 0) { 672 retval = fd; 673 printf("*** %s: %s\n", newpath, strerror(errno)); 674 continue; 675 } 676 (*dump_from_fd)(NULL, newpath, fd); 677 } 678 closedir(dirp); 679 if (!title.empty()) { 680 printf("\n"); 681 } 682 return retval; 683 } 684 685 /* fd must have been opened with the flag O_NONBLOCK. With this flag set, 686 * it's possible to avoid issues where opening the file itself can get 687 * stuck. 688 */ 689 int dump_file_from_fd(const char *title, const char *path, int fd) { 690 if (PropertiesHelper::IsDryRun()) return 0; 691 692 int flags = fcntl(fd, F_GETFL); 693 if (flags == -1) { 694 printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); 695 close(fd); 696 return -1; 697 } else if (!(flags & O_NONBLOCK)) { 698 printf("*** %s: fd must have O_NONBLOCK set.\n", path); 699 close(fd); 700 return -1; 701 } 702 return DumpFileFromFdToFd(title, path, fd, STDOUT_FILENO, PropertiesHelper::IsDryRun()); 703 } 704 705 int Dumpstate::RunCommand(const std::string& title, const std::vector<std::string>& full_command, 706 const CommandOptions& options) { 707 DurationReporter duration_reporter(title); 708 709 int status = RunCommandToFd(STDOUT_FILENO, title, full_command, options); 710 711 /* TODO: for now we're simplifying the progress calculation by using the 712 * timeout as the weight. It's a good approximation for most cases, except when calling dumpsys, 713 * where its weight should be much higher proportionally to its timeout. 714 * Ideally, it should use a options.EstimatedDuration() instead...*/ 715 UpdateProgress(options.Timeout()); 716 717 return status; 718 } 719 720 void Dumpstate::RunDumpsys(const std::string& title, const std::vector<std::string>& dumpsys_args, 721 const CommandOptions& options, long dumpsysTimeout) { 722 long timeout = dumpsysTimeout > 0 ? dumpsysTimeout : options.Timeout(); 723 std::vector<std::string> dumpsys = {"/system/bin/dumpsys", "-t", std::to_string(timeout)}; 724 dumpsys.insert(dumpsys.end(), dumpsys_args.begin(), dumpsys_args.end()); 725 RunCommand(title, dumpsys, options); 726 } 727 728 int open_socket(const char *service) { 729 int s = android_get_control_socket(service); 730 if (s < 0) { 731 MYLOGE("android_get_control_socket(%s): %s\n", service, strerror(errno)); 732 exit(1); 733 } 734 fcntl(s, F_SETFD, FD_CLOEXEC); 735 if (listen(s, 4) < 0) { 736 MYLOGE("listen(control socket): %s\n", strerror(errno)); 737 exit(1); 738 } 739 740 struct sockaddr addr; 741 socklen_t alen = sizeof(addr); 742 int fd = accept(s, &addr, &alen); 743 if (fd < 0) { 744 MYLOGE("accept(control socket): %s\n", strerror(errno)); 745 exit(1); 746 } 747 748 return fd; 749 } 750 751 /* redirect output to a service control socket */ 752 void redirect_to_socket(FILE *redirect, const char *service) { 753 int fd = open_socket(service); 754 fflush(redirect); 755 dup2(fd, fileno(redirect)); 756 close(fd); 757 } 758 759 // TODO: should call is_valid_output_file and/or be merged into it. 760 void create_parent_dirs(const char *path) { 761 char *chp = const_cast<char *> (path); 762 763 /* skip initial slash */ 764 if (chp[0] == '/') 765 chp++; 766 767 /* create leading directories, if necessary */ 768 struct stat dir_stat; 769 while (chp && chp[0]) { 770 chp = strchr(chp, '/'); 771 if (chp) { 772 *chp = 0; 773 if (stat(path, &dir_stat) == -1 || !S_ISDIR(dir_stat.st_mode)) { 774 MYLOGI("Creating directory %s\n", path); 775 if (mkdir(path, 0770)) { /* drwxrwx--- */ 776 MYLOGE("Unable to create directory %s: %s\n", path, strerror(errno)); 777 } else if (chown(path, AID_SHELL, AID_SHELL)) { 778 MYLOGE("Unable to change ownership of dir %s: %s\n", path, strerror(errno)); 779 } 780 } 781 *chp++ = '/'; 782 } 783 } 784 } 785 786 void _redirect_to_file(FILE *redirect, char *path, int truncate_flag) { 787 create_parent_dirs(path); 788 789 int fd = TEMP_FAILURE_RETRY(open(path, 790 O_WRONLY | O_CREAT | truncate_flag | O_CLOEXEC | O_NOFOLLOW, 791 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); 792 if (fd < 0) { 793 MYLOGE("%s: %s\n", path, strerror(errno)); 794 exit(1); 795 } 796 797 TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); 798 close(fd); 799 } 800 801 void redirect_to_file(FILE *redirect, char *path) { 802 _redirect_to_file(redirect, path, O_TRUNC); 803 } 804 805 void redirect_to_existing_file(FILE *redirect, char *path) { 806 _redirect_to_file(redirect, path, O_APPEND); 807 } 808 809 static bool should_dump_hal_interface(const char* interface) { 810 for (const char** i = hal_interfaces_to_dump; *i; i++) { 811 if (!strcmp(*i, interface)) { 812 return true; 813 } 814 } 815 return false; 816 } 817 818 static bool should_dump_native_traces(const char* path) { 819 for (const char** p = native_processes_to_dump; *p; p++) { 820 if (!strcmp(*p, path)) { 821 return true; 822 } 823 } 824 return false; 825 } 826 827 std::set<int> get_interesting_hal_pids() { 828 using android::hidl::manager::V1_0::IServiceManager; 829 using android::sp; 830 using android::hardware::Return; 831 832 sp<IServiceManager> manager = IServiceManager::getService(); 833 std::set<int> pids; 834 835 Return<void> ret = manager->debugDump([&](auto& hals) { 836 for (const auto &info : hals) { 837 if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) { 838 continue; 839 } 840 841 if (!should_dump_hal_interface(info.interfaceName.c_str())) { 842 continue; 843 } 844 845 pids.insert(info.pid); 846 } 847 }); 848 849 if (!ret.isOk()) { 850 MYLOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str()); 851 } 852 853 return pids; // whether it was okay or not 854 } 855 856 /* dump Dalvik and native stack traces, return the trace file location (NULL if none) */ 857 const char *dump_traces() { 858 DurationReporter duration_reporter("DUMP TRACES"); 859 860 const char* result = nullptr; 861 862 std::string traces_path = android::base::GetProperty("dalvik.vm.stack-trace-file", ""); 863 if (traces_path.empty()) return nullptr; 864 865 /* move the old traces.txt (if any) out of the way temporarily */ 866 std::string anrtraces_path = traces_path + ".anr"; 867 if (rename(traces_path.c_str(), anrtraces_path.c_str()) && errno != ENOENT) { 868 MYLOGE("rename(%s, %s): %s\n", traces_path.c_str(), anrtraces_path.c_str(), strerror(errno)); 869 return nullptr; // Can't rename old traces.txt -- no permission? -- leave it alone instead 870 } 871 872 /* create a new, empty traces.txt file to receive stack dumps */ 873 int fd = TEMP_FAILURE_RETRY( 874 open(traces_path.c_str(), O_CREAT | O_WRONLY | O_APPEND | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 875 0666)); /* -rw-rw-rw- */ 876 if (fd < 0) { 877 MYLOGE("%s: %s\n", traces_path.c_str(), strerror(errno)); 878 return nullptr; 879 } 880 int chmod_ret = fchmod(fd, 0666); 881 if (chmod_ret < 0) { 882 MYLOGE("fchmod on %s failed: %s\n", traces_path.c_str(), strerror(errno)); 883 close(fd); 884 return nullptr; 885 } 886 887 /* Variables below must be initialized before 'goto' statements */ 888 int dalvik_found = 0; 889 int ifd, wfd = -1; 890 std::set<int> hal_pids = get_interesting_hal_pids(); 891 892 /* walk /proc and kill -QUIT all Dalvik processes */ 893 DIR *proc = opendir("/proc"); 894 if (proc == NULL) { 895 MYLOGE("/proc: %s\n", strerror(errno)); 896 goto error_close_fd; 897 } 898 899 /* use inotify to find when processes are done dumping */ 900 ifd = inotify_init(); 901 if (ifd < 0) { 902 MYLOGE("inotify_init: %s\n", strerror(errno)); 903 goto error_close_fd; 904 } 905 906 wfd = inotify_add_watch(ifd, traces_path.c_str(), IN_CLOSE_WRITE); 907 if (wfd < 0) { 908 MYLOGE("inotify_add_watch(%s): %s\n", traces_path.c_str(), strerror(errno)); 909 goto error_close_ifd; 910 } 911 912 struct dirent *d; 913 while ((d = readdir(proc))) { 914 int pid = atoi(d->d_name); 915 if (pid <= 0) continue; 916 917 char path[PATH_MAX]; 918 char data[PATH_MAX]; 919 snprintf(path, sizeof(path), "/proc/%d/exe", pid); 920 ssize_t len = readlink(path, data, sizeof(data) - 1); 921 if (len <= 0) { 922 continue; 923 } 924 data[len] = '\0'; 925 926 if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) { 927 /* skip zygote -- it won't dump its stack anyway */ 928 snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); 929 int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC)); 930 len = read(cfd, data, sizeof(data) - 1); 931 close(cfd); 932 if (len <= 0) { 933 continue; 934 } 935 data[len] = '\0'; 936 if (!strncmp(data, "zygote", strlen("zygote"))) { 937 continue; 938 } 939 940 ++dalvik_found; 941 uint64_t start = Nanotime(); 942 if (kill(pid, SIGQUIT)) { 943 MYLOGE("kill(%d, SIGQUIT): %s\n", pid, strerror(errno)); 944 continue; 945 } 946 947 /* wait for the writable-close notification from inotify */ 948 struct pollfd pfd = { ifd, POLLIN, 0 }; 949 int ret = poll(&pfd, 1, TRACE_DUMP_TIMEOUT_MS); 950 if (ret < 0) { 951 MYLOGE("poll: %s\n", strerror(errno)); 952 } else if (ret == 0) { 953 MYLOGE("warning: timed out dumping pid %d\n", pid); 954 } else { 955 struct inotify_event ie; 956 read(ifd, &ie, sizeof(ie)); 957 } 958 959 if (lseek(fd, 0, SEEK_END) < 0) { 960 MYLOGE("lseek: %s\n", strerror(errno)); 961 } else { 962 dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n", pid, 963 (float)(Nanotime() - start) / NANOS_PER_SEC); 964 } 965 } else if (should_dump_native_traces(data) || 966 hal_pids.find(pid) != hal_pids.end()) { 967 /* dump native process if appropriate */ 968 if (lseek(fd, 0, SEEK_END) < 0) { 969 MYLOGE("lseek: %s\n", strerror(errno)); 970 } else { 971 static uint16_t timeout_failures = 0; 972 uint64_t start = Nanotime(); 973 974 /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */ 975 if (timeout_failures == 3) { 976 dprintf(fd, "too many stack dump failures, skipping...\n"); 977 } else if (dump_backtrace_to_file_timeout(pid, fd, 20) == -1) { 978 dprintf(fd, "dumping failed, likely due to a timeout\n"); 979 timeout_failures++; 980 } else { 981 timeout_failures = 0; 982 } 983 dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n", pid, 984 (float)(Nanotime() - start) / NANOS_PER_SEC); 985 } 986 } 987 } 988 989 if (dalvik_found == 0) { 990 MYLOGE("Warning: no Dalvik processes found to dump stacks\n"); 991 } 992 993 static std::string dumptraces_path = android::base::StringPrintf( 994 "%s/bugreport-%s", dirname(traces_path.c_str()), basename(traces_path.c_str())); 995 if (rename(traces_path.c_str(), dumptraces_path.c_str())) { 996 MYLOGE("rename(%s, %s): %s\n", traces_path.c_str(), dumptraces_path.c_str(), 997 strerror(errno)); 998 goto error_close_ifd; 999 } 1000 result = dumptraces_path.c_str(); 1001 1002 /* replace the saved [ANR] traces.txt file */ 1003 rename(anrtraces_path.c_str(), traces_path.c_str()); 1004 1005 error_close_ifd: 1006 close(ifd); 1007 error_close_fd: 1008 close(fd); 1009 return result; 1010 } 1011 1012 void dump_route_tables() { 1013 DurationReporter duration_reporter("DUMP ROUTE TABLES"); 1014 if (PropertiesHelper::IsDryRun()) return; 1015 const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; 1016 ds.DumpFile("RT_TABLES", RT_TABLES_PATH); 1017 FILE* fp = fopen(RT_TABLES_PATH, "re"); 1018 if (!fp) { 1019 printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); 1020 return; 1021 } 1022 char table[16]; 1023 // Each line has an integer (the table number), a space, and a string (the table name). We only 1024 // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. 1025 // Add a fixed max limit so this doesn't go awry. 1026 for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { 1027 RunCommand("ROUTE TABLE IPv4", {"ip", "-4", "route", "show", "table", table}); 1028 RunCommand("ROUTE TABLE IPv6", {"ip", "-6", "route", "show", "table", table}); 1029 } 1030 fclose(fp); 1031 } 1032 1033 // TODO: make this function thread safe if sections are generated in parallel. 1034 void Dumpstate::UpdateProgress(int32_t delta) { 1035 if (progress_ == nullptr) { 1036 MYLOGE("UpdateProgress: progress_ not set\n"); 1037 return; 1038 } 1039 1040 // Always update progess so stats can be tuned... 1041 bool max_changed = progress_->Inc(delta); 1042 1043 // ...but only notifiy listeners when necessary. 1044 if (!update_progress_) return; 1045 1046 int progress = progress_->Get(); 1047 int max = progress_->GetMax(); 1048 1049 // adjusts max on the fly 1050 if (max_changed && listener_ != nullptr) { 1051 listener_->onMaxProgressUpdated(max); 1052 } 1053 1054 int32_t last_update_delta = progress - last_updated_progress_; 1055 if (last_updated_progress_ > 0 && last_update_delta < update_progress_threshold_) { 1056 return; 1057 } 1058 last_updated_progress_ = progress; 1059 1060 if (control_socket_fd_ >= 0) { 1061 dprintf(control_socket_fd_, "PROGRESS:%d/%d\n", progress, max); 1062 fsync(control_socket_fd_); 1063 } 1064 1065 if (listener_ != nullptr) { 1066 if (progress % 100 == 0) { 1067 // We don't want to spam logcat, so only log multiples of 100. 1068 MYLOGD("Setting progress (%s): %d/%d\n", listener_name_.c_str(), progress, max); 1069 } else { 1070 // stderr is ignored on normal invocations, but useful when calling 1071 // /system/bin/dumpstate directly for debuggging. 1072 fprintf(stderr, "Setting progress (%s): %d/%d\n", listener_name_.c_str(), progress, max); 1073 } 1074 listener_->onProgressUpdated(progress); 1075 } 1076 } 1077 1078 void Dumpstate::TakeScreenshot(const std::string& path) { 1079 const std::string& real_path = path.empty() ? screenshot_path_ : path; 1080 int status = 1081 RunCommand("", {"/system/bin/screencap", "-p", real_path}, 1082 CommandOptions::WithTimeout(10).Always().DropRoot().RedirectStderr().Build()); 1083 if (status == 0) { 1084 MYLOGD("Screenshot saved on %s\n", real_path.c_str()); 1085 } else { 1086 MYLOGE("Failed to take screenshot on %s\n", real_path.c_str()); 1087 } 1088 } 1089 1090 bool is_dir(const char* pathname) { 1091 struct stat info; 1092 if (stat(pathname, &info) == -1) { 1093 return false; 1094 } 1095 return S_ISDIR(info.st_mode); 1096 } 1097 1098 time_t get_mtime(int fd, time_t default_mtime) { 1099 struct stat info; 1100 if (fstat(fd, &info) == -1) { 1101 return default_mtime; 1102 } 1103 return info.st_mtime; 1104 } 1105 1106 void dump_emmc_ecsd(const char *ext_csd_path) { 1107 // List of interesting offsets 1108 struct hex { 1109 char str[2]; 1110 }; 1111 static const size_t EXT_CSD_REV = 192 * sizeof(hex); 1112 static const size_t EXT_PRE_EOL_INFO = 267 * sizeof(hex); 1113 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_A = 268 * sizeof(hex); 1114 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_B = 269 * sizeof(hex); 1115 1116 std::string buffer; 1117 if (!android::base::ReadFileToString(ext_csd_path, &buffer)) { 1118 return; 1119 } 1120 1121 printf("------ %s Extended CSD ------\n", ext_csd_path); 1122 1123 if (buffer.length() < (EXT_CSD_REV + sizeof(hex))) { 1124 printf("*** %s: truncated content %zu\n\n", ext_csd_path, buffer.length()); 1125 return; 1126 } 1127 1128 int ext_csd_rev = 0; 1129 std::string sub = buffer.substr(EXT_CSD_REV, sizeof(hex)); 1130 if (sscanf(sub.c_str(), "%2x", &ext_csd_rev) != 1) { 1131 printf("*** %s: EXT_CSD_REV parse error \"%s\"\n\n", ext_csd_path, sub.c_str()); 1132 return; 1133 } 1134 1135 static const char *ver_str[] = { 1136 "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0" 1137 }; 1138 printf("rev 1.%d (MMC %s)\n", ext_csd_rev, 1139 (ext_csd_rev < (int)(sizeof(ver_str) / sizeof(ver_str[0]))) ? ver_str[ext_csd_rev] 1140 : "Unknown"); 1141 if (ext_csd_rev < 7) { 1142 printf("\n"); 1143 return; 1144 } 1145 1146 if (buffer.length() < (EXT_PRE_EOL_INFO + sizeof(hex))) { 1147 printf("*** %s: truncated content %zu\n\n", ext_csd_path, buffer.length()); 1148 return; 1149 } 1150 1151 int ext_pre_eol_info = 0; 1152 sub = buffer.substr(EXT_PRE_EOL_INFO, sizeof(hex)); 1153 if (sscanf(sub.c_str(), "%2x", &ext_pre_eol_info) != 1) { 1154 printf("*** %s: PRE_EOL_INFO parse error \"%s\"\n\n", ext_csd_path, sub.c_str()); 1155 return; 1156 } 1157 1158 static const char *eol_str[] = { 1159 "Undefined", 1160 "Normal", 1161 "Warning (consumed 80% of reserve)", 1162 "Urgent (consumed 90% of reserve)" 1163 }; 1164 printf( 1165 "PRE_EOL_INFO %d (MMC %s)\n", ext_pre_eol_info, 1166 eol_str[(ext_pre_eol_info < (int)(sizeof(eol_str) / sizeof(eol_str[0]))) ? ext_pre_eol_info 1167 : 0]); 1168 1169 for (size_t lifetime = EXT_DEVICE_LIFE_TIME_EST_TYP_A; 1170 lifetime <= EXT_DEVICE_LIFE_TIME_EST_TYP_B; 1171 lifetime += sizeof(hex)) { 1172 int ext_device_life_time_est; 1173 static const char *est_str[] = { 1174 "Undefined", 1175 "0-10% of device lifetime used", 1176 "10-20% of device lifetime used", 1177 "20-30% of device lifetime used", 1178 "30-40% of device lifetime used", 1179 "40-50% of device lifetime used", 1180 "50-60% of device lifetime used", 1181 "60-70% of device lifetime used", 1182 "70-80% of device lifetime used", 1183 "80-90% of device lifetime used", 1184 "90-100% of device lifetime used", 1185 "Exceeded the maximum estimated device lifetime", 1186 }; 1187 1188 if (buffer.length() < (lifetime + sizeof(hex))) { 1189 printf("*** %s: truncated content %zu\n", ext_csd_path, buffer.length()); 1190 break; 1191 } 1192 1193 ext_device_life_time_est = 0; 1194 sub = buffer.substr(lifetime, sizeof(hex)); 1195 if (sscanf(sub.c_str(), "%2x", &ext_device_life_time_est) != 1) { 1196 printf("*** %s: DEVICE_LIFE_TIME_EST_TYP_%c parse error \"%s\"\n", ext_csd_path, 1197 (unsigned)((lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) / sizeof(hex)) + 'A', 1198 sub.c_str()); 1199 continue; 1200 } 1201 printf("DEVICE_LIFE_TIME_EST_TYP_%c %d (MMC %s)\n", 1202 (unsigned)((lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) / sizeof(hex)) + 'A', 1203 ext_device_life_time_est, 1204 est_str[(ext_device_life_time_est < (int)(sizeof(est_str) / sizeof(est_str[0]))) 1205 ? ext_device_life_time_est 1206 : 0]); 1207 } 1208 1209 printf("\n"); 1210 } 1211
