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 <memory> 42#include <set> 43#include <string> 44#include <vector> 45 46#include <android-base/file.h> 47#include <android-base/properties.h> 48#include <android-base/stringprintf.h> 49#include <android-base/strings.h> 50#include <android-base/unique_fd.h> 51#include <android/hidl/manager/1.0/IServiceManager.h> 52#include <cutils/properties.h> 53#include <cutils/sockets.h> 54#include <debuggerd/client.h> 55#include <log/log.h> 56#include <private/android_filesystem_config.h> 57 58#include "DumpstateInternal.h" 59 60// TODO: remove once moved to namespace 61using android::os::dumpstate::CommandOptions; 62using android::os::dumpstate::DumpFileToFd; 63using android::os::dumpstate::PropertiesHelper; 64 65// Keep in sync with 66// frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java 67static const int TRACE_DUMP_TIMEOUT_MS = 10000; // 10 seconds 68 69/* Most simple commands have 10 as timeout, so 5 is a good estimate */ 70static const int32_t WEIGHT_FILE = 5; 71 72// TODO: temporary variables and functions used during C++ refactoring 73static Dumpstate& ds = Dumpstate::GetInstance(); 74static int RunCommand(const std::string& title, const std::vector<std::string>& full_command, 75 const CommandOptions& options = CommandOptions::DEFAULT) { 76 return ds.RunCommand(title, full_command, options); 77} 78 79/* list of native processes to include in the native dumps */ 80// This matches the /proc/pid/exe link instead of /proc/pid/cmdline. 81static const char* native_processes_to_dump[] = { 82 "/system/bin/audioserver", 83 "/system/bin/cameraserver", 84 "/system/bin/drmserver", 85 "/system/bin/mediadrmserver", 86 "/system/bin/mediaextractor", // media.extractor 87 "/system/bin/mediaserver", 88 "/system/bin/sdcard", 89 "/system/bin/surfaceflinger", 90 "/system/bin/vehicle_network_service", 91 "/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec 92 NULL, 93}; 94 95/* list of hal interface to dump containing process during native dumps */ 96static const char* hal_interfaces_to_dump[] { 97 "android.hardware.audio@2.0::IDevicesFactory", 98 "android.hardware.bluetooth@1.0::IBluetoothHci", 99 "android.hardware.camera.provider@2.4::ICameraProvider", 100 "android.hardware.graphics.composer@2.1::IComposer", 101 "android.hardware.media.omx@1.0::IOmx", 102 "android.hardware.sensors@1.0::ISensors", 103 "android.hardware.vr@1.0::IVr", 104 NULL, 105}; 106 107// Reasonable value for max stats. 108static const int STATS_MAX_N_RUNS = 1000; 109static const long STATS_MAX_AVERAGE = 100000; 110 111CommandOptions Dumpstate::DEFAULT_DUMPSYS = CommandOptions::WithTimeout(30).Build(); 112 113Dumpstate::Dumpstate(const std::string& version) 114 : pid_(getpid()), version_(version), now_(time(nullptr)) { 115} 116 117Dumpstate& Dumpstate::GetInstance() { 118 static Dumpstate singleton_(android::base::GetProperty("dumpstate.version", VERSION_CURRENT)); 119 return singleton_; 120} 121 122DurationReporter::DurationReporter(const std::string& title, bool log_only) 123 : title_(title), log_only_(log_only) { 124 if (!title_.empty()) { 125 started_ = Nanotime(); 126 } 127} 128 129DurationReporter::~DurationReporter() { 130 if (!title_.empty()) { 131 uint64_t elapsed = Nanotime() - started_; 132 if (log_only_) { 133 MYLOGD("Duration of '%s': %.3fs\n", title_.c_str(), (float)elapsed / NANOS_PER_SEC); 134 } else { 135 // Use "Yoda grammar" to make it easier to grep|sort sections. 136 printf("------ %.3fs was the duration of '%s' ------\n", (float)elapsed / NANOS_PER_SEC, 137 title_.c_str()); 138 } 139 } 140} 141 142const int32_t Progress::kDefaultMax = 5000; 143 144Progress::Progress(const std::string& path) : Progress(Progress::kDefaultMax, 1.1, path) { 145} 146 147Progress::Progress(int32_t initial_max, int32_t progress, float growth_factor) 148 : Progress(initial_max, growth_factor, "") { 149 progress_ = progress; 150} 151 152Progress::Progress(int32_t initial_max, float growth_factor, const std::string& path) 153 : initial_max_(initial_max), 154 progress_(0), 155 max_(initial_max), 156 growth_factor_(growth_factor), 157 n_runs_(0), 158 average_max_(0), 159 path_(path) { 160 if (!path_.empty()) { 161 Load(); 162 } 163} 164 165void Progress::Load() { 166 MYLOGD("Loading stats from %s\n", path_.c_str()); 167 std::string content; 168 if (!android::base::ReadFileToString(path_, &content)) { 169 MYLOGI("Could not read stats from %s; using max of %d\n", path_.c_str(), max_); 170 return; 171 } 172 if (content.empty()) { 173 MYLOGE("No stats (empty file) on %s; using max of %d\n", path_.c_str(), max_); 174 return; 175 } 176 std::vector<std::string> lines = android::base::Split(content, "\n"); 177 178 if (lines.size() < 1) { 179 MYLOGE("Invalid stats on file %s: not enough lines (%d). Using max of %d\n", path_.c_str(), 180 (int)lines.size(), max_); 181 return; 182 } 183 char* ptr; 184 n_runs_ = strtol(lines[0].c_str(), &ptr, 10); 185 average_max_ = strtol(ptr, nullptr, 10); 186 if (n_runs_ <= 0 || average_max_ <= 0 || n_runs_ > STATS_MAX_N_RUNS || 187 average_max_ > STATS_MAX_AVERAGE) { 188 MYLOGE("Invalid stats line on file %s: %s\n", path_.c_str(), lines[0].c_str()); 189 initial_max_ = Progress::kDefaultMax; 190 } else { 191 initial_max_ = average_max_; 192 } 193 max_ = initial_max_; 194 195 MYLOGI("Average max progress: %d in %d runs; estimated max: %d\n", average_max_, n_runs_, max_); 196} 197 198void Progress::Save() { 199 int32_t total = n_runs_ * average_max_ + progress_; 200 int32_t runs = n_runs_ + 1; 201 int32_t average = floor(((float)total) / runs); 202 MYLOGI("Saving stats (total=%d, runs=%d, average=%d) on %s\n", total, runs, average, 203 path_.c_str()); 204 if (path_.empty()) { 205 return; 206 } 207 208 std::string content = android::base::StringPrintf("%d %d\n", runs, average); 209 if (!android::base::WriteStringToFile(content, path_)) { 210 MYLOGE("Could not save stats on %s\n", path_.c_str()); 211 } 212} 213 214int32_t Progress::Get() const { 215 return progress_; 216} 217 218bool Progress::Inc(int32_t delta) { 219 bool changed = false; 220 if (delta >= 0) { 221 progress_ += delta; 222 if (progress_ > max_) { 223 int32_t old_max = max_; 224 max_ = floor((float)progress_ * growth_factor_); 225 MYLOGD("Adjusting max progress from %d to %d\n", old_max, max_); 226 changed = true; 227 } 228 } 229 return changed; 230} 231 232int32_t Progress::GetMax() const { 233 return max_; 234} 235 236int32_t Progress::GetInitialMax() const { 237 return initial_max_; 238} 239 240void Progress::Dump(int fd, const std::string& prefix) const { 241 const char* pr = prefix.c_str(); 242 dprintf(fd, "%sprogress: %d\n", pr, progress_); 243 dprintf(fd, "%smax: %d\n", pr, max_); 244 dprintf(fd, "%sinitial_max: %d\n", pr, initial_max_); 245 dprintf(fd, "%sgrowth_factor: %0.2f\n", pr, growth_factor_); 246 dprintf(fd, "%spath: %s\n", pr, path_.c_str()); 247 dprintf(fd, "%sn_runs: %d\n", pr, n_runs_); 248 dprintf(fd, "%saverage_max: %d\n", pr, average_max_); 249} 250 251bool Dumpstate::IsZipping() const { 252 return zip_writer_ != nullptr; 253} 254 255std::string Dumpstate::GetPath(const std::string& suffix) const { 256 return android::base::StringPrintf("%s/%s-%s%s", bugreport_dir_.c_str(), base_name_.c_str(), 257 name_.c_str(), suffix.c_str()); 258} 259 260void Dumpstate::SetProgress(std::unique_ptr<Progress> progress) { 261 progress_ = std::move(progress); 262} 263 264void for_each_userid(void (*func)(int), const char *header) { 265 std::string title = header == nullptr ? "for_each_userid" : android::base::StringPrintf( 266 "for_each_userid(%s)", header); 267 DurationReporter duration_reporter(title); 268 if (PropertiesHelper::IsDryRun()) return; 269 270 DIR *d; 271 struct dirent *de; 272 273 if (header) printf("\n------ %s ------\n", header); 274 func(0); 275 276 if (!(d = opendir("/data/system/users"))) { 277 printf("Failed to open /data/system/users (%s)\n", strerror(errno)); 278 return; 279 } 280 281 while ((de = readdir(d))) { 282 int userid; 283 if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { 284 continue; 285 } 286 func(userid); 287 } 288 289 closedir(d); 290} 291 292static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { 293 DIR *d; 294 struct dirent *de; 295 296 if (!(d = opendir("/proc"))) { 297 printf("Failed to open /proc (%s)\n", strerror(errno)); 298 return; 299 } 300 301 if (header) printf("\n------ %s ------\n", header); 302 while ((de = readdir(d))) { 303 int pid; 304 int fd; 305 char cmdpath[255]; 306 char cmdline[255]; 307 308 if (!(pid = atoi(de->d_name))) { 309 continue; 310 } 311 312 memset(cmdline, 0, sizeof(cmdline)); 313 314 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/cmdline", pid); 315 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 316 TEMP_FAILURE_RETRY(read(fd, cmdline, sizeof(cmdline) - 2)); 317 close(fd); 318 if (cmdline[0]) { 319 helper(pid, cmdline, arg); 320 continue; 321 } 322 } 323 324 // if no cmdline, a kernel thread has comm 325 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/comm", pid); 326 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 327 TEMP_FAILURE_RETRY(read(fd, cmdline + 1, sizeof(cmdline) - 4)); 328 close(fd); 329 if (cmdline[1]) { 330 cmdline[0] = '['; 331 size_t len = strcspn(cmdline, "\f\b\r\n"); 332 cmdline[len] = ']'; 333 cmdline[len+1] = '\0'; 334 } 335 } 336 if (!cmdline[0]) { 337 strcpy(cmdline, "N/A"); 338 } 339 helper(pid, cmdline, arg); 340 } 341 342 closedir(d); 343} 344 345static void for_each_pid_helper(int pid, const char *cmdline, void *arg) { 346 for_each_pid_func *func = (for_each_pid_func*) arg; 347 func(pid, cmdline); 348} 349 350void for_each_pid(for_each_pid_func func, const char *header) { 351 std::string title = header == nullptr ? "for_each_pid" 352 : android::base::StringPrintf("for_each_pid(%s)", header); 353 DurationReporter duration_reporter(title); 354 if (PropertiesHelper::IsDryRun()) return; 355 356 __for_each_pid(for_each_pid_helper, header, (void *) func); 357} 358 359static void for_each_tid_helper(int pid, const char *cmdline, void *arg) { 360 DIR *d; 361 struct dirent *de; 362 char taskpath[255]; 363 for_each_tid_func *func = (for_each_tid_func *) arg; 364 365 snprintf(taskpath, sizeof(taskpath), "/proc/%d/task", pid); 366 367 if (!(d = opendir(taskpath))) { 368 printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); 369 return; 370 } 371 372 func(pid, pid, cmdline); 373 374 while ((de = readdir(d))) { 375 int tid; 376 int fd; 377 char commpath[255]; 378 char comm[255]; 379 380 if (!(tid = atoi(de->d_name))) { 381 continue; 382 } 383 384 if (tid == pid) 385 continue; 386 387 snprintf(commpath, sizeof(commpath), "/proc/%d/comm", tid); 388 memset(comm, 0, sizeof(comm)); 389 if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { 390 strcpy(comm, "N/A"); 391 } else { 392 char *c; 393 TEMP_FAILURE_RETRY(read(fd, comm, sizeof(comm) - 2)); 394 close(fd); 395 396 c = strrchr(comm, '\n'); 397 if (c) { 398 *c = '\0'; 399 } 400 } 401 func(pid, tid, comm); 402 } 403 404 closedir(d); 405} 406 407void for_each_tid(for_each_tid_func func, const char *header) { 408 std::string title = header == nullptr ? "for_each_tid" 409 : android::base::StringPrintf("for_each_tid(%s)", header); 410 DurationReporter duration_reporter(title); 411 412 if (PropertiesHelper::IsDryRun()) return; 413 414 __for_each_pid(for_each_tid_helper, header, (void *) func); 415} 416 417void show_wchan(int pid, int tid, const char *name) { 418 if (PropertiesHelper::IsDryRun()) return; 419 420 char path[255]; 421 char buffer[255]; 422 int fd, ret, save_errno; 423 char name_buffer[255]; 424 425 memset(buffer, 0, sizeof(buffer)); 426 427 snprintf(path, sizeof(path), "/proc/%d/wchan", tid); 428 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 429 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 430 return; 431 } 432 433 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 434 save_errno = errno; 435 close(fd); 436 437 if (ret < 0) { 438 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 439 return; 440 } 441 442 snprintf(name_buffer, sizeof(name_buffer), "%*s%s", 443 pid == tid ? 0 : 3, "", name); 444 445 printf("%-7d %-32s %s\n", tid, name_buffer, buffer); 446 447 return; 448} 449 450// print time in centiseconds 451static void snprcent(char *buffer, size_t len, size_t spc, 452 unsigned long long time) { 453 static long hz; // cache discovered hz 454 455 if (hz <= 0) { 456 hz = sysconf(_SC_CLK_TCK); 457 if (hz <= 0) { 458 hz = 1000; 459 } 460 } 461 462 // convert to centiseconds 463 time = (time * 100 + (hz / 2)) / hz; 464 465 char str[16]; 466 467 snprintf(str, sizeof(str), " %llu.%02u", 468 time / 100, (unsigned)(time % 100)); 469 size_t offset = strlen(buffer); 470 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 471 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 472} 473 474// print permille as a percent 475static void snprdec(char *buffer, size_t len, size_t spc, unsigned permille) { 476 char str[16]; 477 478 snprintf(str, sizeof(str), " %u.%u%%", permille / 10, permille % 10); 479 size_t offset = strlen(buffer); 480 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 481 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 482} 483 484void show_showtime(int pid, const char *name) { 485 if (PropertiesHelper::IsDryRun()) return; 486 487 char path[255]; 488 char buffer[1023]; 489 int fd, ret, save_errno; 490 491 memset(buffer, 0, sizeof(buffer)); 492 493 snprintf(path, sizeof(path), "/proc/%d/stat", pid); 494 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 495 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 496 return; 497 } 498 499 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 500 save_errno = errno; 501 close(fd); 502 503 if (ret < 0) { 504 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 505 return; 506 } 507 508 // field 14 is utime 509 // field 15 is stime 510 // field 42 is iotime 511 unsigned long long utime = 0, stime = 0, iotime = 0; 512 if (sscanf(buffer, 513 "%*u %*s %*s %*d %*d %*d %*d %*d %*d %*d %*d " 514 "%*d %*d %llu %llu %*d %*d %*d %*d %*d %*d " 515 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " 516 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %llu ", 517 &utime, &stime, &iotime) != 3) { 518 return; 519 } 520 521 unsigned long long total = utime + stime; 522 if (!total) { 523 return; 524 } 525 526 unsigned permille = (iotime * 1000 + (total / 2)) / total; 527 if (permille > 1000) { 528 permille = 1000; 529 } 530 531 // try to beautify and stabilize columns at <80 characters 532 snprintf(buffer, sizeof(buffer), "%-6d%s", pid, name); 533 if ((name[0] != '[') || utime) { 534 snprcent(buffer, sizeof(buffer), 57, utime); 535 } 536 snprcent(buffer, sizeof(buffer), 65, stime); 537 if ((name[0] != '[') || iotime) { 538 snprcent(buffer, sizeof(buffer), 73, iotime); 539 } 540 if (iotime) { 541 snprdec(buffer, sizeof(buffer), 79, permille); 542 } 543 puts(buffer); // adds a trailing newline 544 545 return; 546} 547 548void do_dmesg() { 549 const char *title = "KERNEL LOG (dmesg)"; 550 DurationReporter duration_reporter(title); 551 printf("------ %s ------\n", title); 552 553 if (PropertiesHelper::IsDryRun()) return; 554 555 /* Get size of kernel buffer */ 556 int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); 557 if (size <= 0) { 558 printf("Unexpected klogctl return value: %d\n\n", size); 559 return; 560 } 561 char *buf = (char *) malloc(size + 1); 562 if (buf == NULL) { 563 printf("memory allocation failed\n\n"); 564 return; 565 } 566 int retval = klogctl(KLOG_READ_ALL, buf, size); 567 if (retval < 0) { 568 printf("klogctl failure\n\n"); 569 free(buf); 570 return; 571 } 572 buf[retval] = '\0'; 573 printf("%s\n\n", buf); 574 free(buf); 575 return; 576} 577 578void do_showmap(int pid, const char *name) { 579 char title[255]; 580 char arg[255]; 581 582 snprintf(title, sizeof(title), "SHOW MAP %d (%s)", pid, name); 583 snprintf(arg, sizeof(arg), "%d", pid); 584 RunCommand(title, {"showmap", "-q", arg}, CommandOptions::AS_ROOT); 585} 586 587int Dumpstate::DumpFile(const std::string& title, const std::string& path) { 588 DurationReporter duration_reporter(title); 589 590 int status = DumpFileToFd(STDOUT_FILENO, title, path); 591 592 UpdateProgress(WEIGHT_FILE); 593 594 return status; 595} 596 597int read_file_as_long(const char *path, long int *output) { 598 int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 599 if (fd < 0) { 600 int err = errno; 601 MYLOGE("Error opening file descriptor for %s: %s\n", path, strerror(err)); 602 return -1; 603 } 604 char buffer[50]; 605 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 606 if (bytes_read == -1) { 607 MYLOGE("Error reading file %s: %s\n", path, strerror(errno)); 608 return -2; 609 } 610 if (bytes_read == 0) { 611 MYLOGE("File %s is empty\n", path); 612 return -3; 613 } 614 *output = atoi(buffer); 615 return 0; 616} 617 618/* calls skip to gate calling dump_from_fd recursively 619 * in the specified directory. dump_from_fd defaults to 620 * dump_file_from_fd above when set to NULL. skip defaults 621 * to false when set to NULL. dump_from_fd will always be 622 * called with title NULL. 623 */ 624int dump_files(const std::string& title, const char* dir, bool (*skip)(const char* path), 625 int (*dump_from_fd)(const char* title, const char* path, int fd)) { 626 DurationReporter duration_reporter(title); 627 DIR *dirp; 628 struct dirent *d; 629 char *newpath = NULL; 630 const char *slash = "/"; 631 int fd, retval = 0; 632 633 if (!title.empty()) { 634 printf("------ %s (%s) ------\n", title.c_str(), dir); 635 } 636 if (PropertiesHelper::IsDryRun()) return 0; 637 638 if (dir[strlen(dir) - 1] == '/') { 639 ++slash; 640 } 641 dirp = opendir(dir); 642 if (dirp == NULL) { 643 retval = -errno; 644 MYLOGE("%s: %s\n", dir, strerror(errno)); 645 return retval; 646 } 647 648 if (!dump_from_fd) { 649 dump_from_fd = dump_file_from_fd; 650 } 651 for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { 652 if ((d->d_name[0] == '.') 653 && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) 654 || (d->d_name[1] == '\0'))) { 655 continue; 656 } 657 asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, 658 (d->d_type == DT_DIR) ? "/" : ""); 659 if (!newpath) { 660 retval = -errno; 661 continue; 662 } 663 if (skip && (*skip)(newpath)) { 664 continue; 665 } 666 if (d->d_type == DT_DIR) { 667 int ret = dump_files("", newpath, skip, dump_from_fd); 668 if (ret < 0) { 669 retval = ret; 670 } 671 continue; 672 } 673 fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 674 if (fd < 0) { 675 retval = fd; 676 printf("*** %s: %s\n", newpath, strerror(errno)); 677 continue; 678 } 679 (*dump_from_fd)(NULL, newpath, fd); 680 } 681 closedir(dirp); 682 if (!title.empty()) { 683 printf("\n"); 684 } 685 return retval; 686} 687 688/* fd must have been opened with the flag O_NONBLOCK. With this flag set, 689 * it's possible to avoid issues where opening the file itself can get 690 * stuck. 691 */ 692int dump_file_from_fd(const char *title, const char *path, int fd) { 693 if (PropertiesHelper::IsDryRun()) return 0; 694 695 int flags = fcntl(fd, F_GETFL); 696 if (flags == -1) { 697 printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); 698 close(fd); 699 return -1; 700 } else if (!(flags & O_NONBLOCK)) { 701 printf("*** %s: fd must have O_NONBLOCK set.\n", path); 702 close(fd); 703 return -1; 704 } 705 return DumpFileFromFdToFd(title, path, fd, STDOUT_FILENO, PropertiesHelper::IsDryRun()); 706} 707 708int Dumpstate::RunCommand(const std::string& title, const std::vector<std::string>& full_command, 709 const CommandOptions& options) { 710 DurationReporter duration_reporter(title); 711 712 int status = RunCommandToFd(STDOUT_FILENO, title, full_command, options); 713 714 /* TODO: for now we're simplifying the progress calculation by using the 715 * timeout as the weight. It's a good approximation for most cases, except when calling dumpsys, 716 * where its weight should be much higher proportionally to its timeout. 717 * Ideally, it should use a options.EstimatedDuration() instead...*/ 718 UpdateProgress(options.Timeout()); 719 720 return status; 721} 722 723void Dumpstate::RunDumpsys(const std::string& title, const std::vector<std::string>& dumpsys_args, 724 const CommandOptions& options, long dumpsysTimeout) { 725 long timeout = dumpsysTimeout > 0 ? dumpsysTimeout : options.Timeout(); 726 std::vector<std::string> dumpsys = {"/system/bin/dumpsys", "-t", std::to_string(timeout)}; 727 dumpsys.insert(dumpsys.end(), dumpsys_args.begin(), dumpsys_args.end()); 728 RunCommand(title, dumpsys, options); 729} 730 731int open_socket(const char *service) { 732 int s = android_get_control_socket(service); 733 if (s < 0) { 734 MYLOGE("android_get_control_socket(%s): %s\n", service, strerror(errno)); 735 exit(1); 736 } 737 fcntl(s, F_SETFD, FD_CLOEXEC); 738 if (listen(s, 4) < 0) { 739 MYLOGE("listen(control socket): %s\n", strerror(errno)); 740 exit(1); 741 } 742 743 struct sockaddr addr; 744 socklen_t alen = sizeof(addr); 745 int fd = accept(s, &addr, &alen); 746 if (fd < 0) { 747 MYLOGE("accept(control socket): %s\n", strerror(errno)); 748 exit(1); 749 } 750 751 return fd; 752} 753 754/* redirect output to a service control socket */ 755void redirect_to_socket(FILE *redirect, const char *service) { 756 int fd = open_socket(service); 757 fflush(redirect); 758 dup2(fd, fileno(redirect)); 759 close(fd); 760} 761 762// TODO: should call is_valid_output_file and/or be merged into it. 763void create_parent_dirs(const char *path) { 764 char *chp = const_cast<char *> (path); 765 766 /* skip initial slash */ 767 if (chp[0] == '/') 768 chp++; 769 770 /* create leading directories, if necessary */ 771 struct stat dir_stat; 772 while (chp && chp[0]) { 773 chp = strchr(chp, '/'); 774 if (chp) { 775 *chp = 0; 776 if (stat(path, &dir_stat) == -1 || !S_ISDIR(dir_stat.st_mode)) { 777 MYLOGI("Creating directory %s\n", path); 778 if (mkdir(path, 0770)) { /* drwxrwx--- */ 779 MYLOGE("Unable to create directory %s: %s\n", path, strerror(errno)); 780 } else if (chown(path, AID_SHELL, AID_SHELL)) { 781 MYLOGE("Unable to change ownership of dir %s: %s\n", path, strerror(errno)); 782 } 783 } 784 *chp++ = '/'; 785 } 786 } 787} 788 789void _redirect_to_file(FILE *redirect, char *path, int truncate_flag) { 790 create_parent_dirs(path); 791 792 int fd = TEMP_FAILURE_RETRY(open(path, 793 O_WRONLY | O_CREAT | truncate_flag | O_CLOEXEC | O_NOFOLLOW, 794 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); 795 if (fd < 0) { 796 MYLOGE("%s: %s\n", path, strerror(errno)); 797 exit(1); 798 } 799 800 TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); 801 close(fd); 802} 803 804void redirect_to_file(FILE *redirect, char *path) { 805 _redirect_to_file(redirect, path, O_TRUNC); 806} 807 808void redirect_to_existing_file(FILE *redirect, char *path) { 809 _redirect_to_file(redirect, path, O_APPEND); 810} 811 812static bool should_dump_hal_interface(const char* interface) { 813 for (const char** i = hal_interfaces_to_dump; *i; i++) { 814 if (!strcmp(*i, interface)) { 815 return true; 816 } 817 } 818 return false; 819} 820 821static bool should_dump_native_traces(const char* path) { 822 for (const char** p = native_processes_to_dump; *p; p++) { 823 if (!strcmp(*p, path)) { 824 return true; 825 } 826 } 827 return false; 828} 829 830std::set<int> get_interesting_hal_pids() { 831 using android::hidl::manager::V1_0::IServiceManager; 832 using android::sp; 833 using android::hardware::Return; 834 835 sp<IServiceManager> manager = IServiceManager::getService(); 836 std::set<int> pids; 837 838 Return<void> ret = manager->debugDump([&](auto& hals) { 839 for (const auto &info : hals) { 840 if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) { 841 continue; 842 } 843 844 if (!should_dump_hal_interface(info.interfaceName.c_str())) { 845 continue; 846 } 847 848 pids.insert(info.pid); 849 } 850 }); 851 852 if (!ret.isOk()) { 853 MYLOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str()); 854 } 855 856 return pids; // whether it was okay or not 857} 858 859const char* DumpTraces(const std::string& traces_path); 860const char* DumpTracesTombstoned(const std::string& traces_dir); 861 862/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */ 863const char *dump_traces() { 864 DurationReporter duration_reporter("DUMP TRACES"); 865 866 const std::string traces_dir = android::base::GetProperty("dalvik.vm.stack-trace-dir", ""); 867 if (!traces_dir.empty()) { 868 return DumpTracesTombstoned(traces_dir); 869 } 870 871 const std::string traces_file = android::base::GetProperty("dalvik.vm.stack-trace-file", ""); 872 if (!traces_file.empty()) { 873 return DumpTraces(traces_file); 874 } 875 876 return nullptr; 877} 878 879static bool IsZygote(int pid) { 880 static const std::string kZygotePrefix = "zygote"; 881 882 std::string cmdline; 883 if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid), 884 &cmdline)) { 885 return true; 886 } 887 888 return (cmdline.find(kZygotePrefix) == 0); 889} 890 891const char* DumpTracesTombstoned(const std::string& traces_dir) { 892 const std::string temp_file_pattern = traces_dir + "/dumptrace_XXXXXX"; 893 894 const size_t buf_size = temp_file_pattern.length() + 1; 895 std::unique_ptr<char[]> file_name_buf(new char[buf_size]); 896 memcpy(file_name_buf.get(), temp_file_pattern.c_str(), buf_size); 897 898 // Create a new, empty file to receive all trace dumps. 899 // 900 // TODO: This can be simplified once we remove support for the old style 901 // dumps. We can have a file descriptor passed in to dump_traces instead 902 // of creating a file, closing it and then reopening it again. 903 android::base::unique_fd fd(mkostemp(file_name_buf.get(), O_APPEND | O_CLOEXEC)); 904 if (fd < 0) { 905 MYLOGE("mkostemp on pattern %s: %s\n", file_name_buf.get(), strerror(errno)); 906 return nullptr; 907 } 908 909 // Nobody should have access to this temporary file except dumpstate, but we 910 // temporarily grant 'read' to 'others' here because this file is created 911 // when tombstoned is still running as root, but dumped after dropping. This 912 // can go away once support for old style dumping has. 913 const int chmod_ret = fchmod(fd, 0666); 914 if (chmod_ret < 0) { 915 MYLOGE("fchmod on %s failed: %s\n", file_name_buf.get(), strerror(errno)); 916 return nullptr; 917 } 918 919 std::unique_ptr<DIR, decltype(&closedir)> proc(opendir("/proc"), closedir); 920 if (proc.get() == nullptr) { 921 MYLOGE("opendir /proc failed: %s\n", strerror(errno)); 922 return nullptr; 923 } 924 925 // Number of times process dumping has timed out. If we encounter too many 926 // failures, we'll give up. 927 int timeout_failures = 0; 928 bool dalvik_found = false; 929 930 const std::set<int> hal_pids = get_interesting_hal_pids(); 931 932 struct dirent* d; 933 while ((d = readdir(proc.get()))) { 934 int pid = atoi(d->d_name); 935 if (pid <= 0) { 936 continue; 937 } 938 939 const std::string link_name = android::base::StringPrintf("/proc/%d/exe", pid); 940 std::string exe; 941 if (!android::base::Readlink(link_name, &exe)) { 942 continue; 943 } 944 945 bool is_java_process; 946 if (exe == "/system/bin/app_process32" || exe == "/system/bin/app_process64") { 947 // Don't bother dumping backtraces for the zygote. 948 if (IsZygote(pid)) { 949 continue; 950 } 951 952 dalvik_found = true; 953 is_java_process = true; 954 } else if (should_dump_native_traces(exe.c_str()) || hal_pids.find(pid) != hal_pids.end()) { 955 is_java_process = false; 956 } else { 957 // Probably a native process we don't care about, continue. 958 continue; 959 } 960 961 // If 3 backtrace dumps fail in a row, consider debuggerd dead. 962 if (timeout_failures == 3) { 963 dprintf(fd, "ERROR: Too many stack dump failures, exiting.\n"); 964 break; 965 } 966 967 const uint64_t start = Nanotime(); 968 const int ret = dump_backtrace_to_file_timeout( 969 pid, is_java_process ? kDebuggerdJavaBacktrace : kDebuggerdNativeBacktrace, 970 is_java_process ? 5 : 20, fd); 971 972 if (ret == -1) { 973 dprintf(fd, "dumping failed, likely due to a timeout\n"); 974 timeout_failures++; 975 continue; 976 } 977 978 // We've successfully dumped stack traces, reset the failure count 979 // and write a summary of the elapsed time to the file and continue with the 980 // next process. 981 timeout_failures = 0; 982 983 dprintf(fd, "[dump %s stack %d: %.3fs elapsed]\n", is_java_process ? "dalvik" : "native", 984 pid, (float)(Nanotime() - start) / NANOS_PER_SEC); 985 } 986 987 if (!dalvik_found) { 988 MYLOGE("Warning: no Dalvik processes found to dump stacks\n"); 989 } 990 991 return file_name_buf.release(); 992} 993 994const char* DumpTraces(const std::string& traces_path) { 995 const char* result = NULL; 996 /* move the old traces.txt (if any) out of the way temporarily */ 997 std::string anrtraces_path = traces_path + ".anr"; 998 if (rename(traces_path.c_str(), anrtraces_path.c_str()) && errno != ENOENT) { 999 MYLOGE("rename(%s, %s): %s\n", traces_path.c_str(), anrtraces_path.c_str(), strerror(errno)); 1000 return nullptr; // Can't rename old traces.txt -- no permission? -- leave it alone instead 1001 } 1002 1003 /* create a new, empty traces.txt file to receive stack dumps */ 1004 int fd = TEMP_FAILURE_RETRY( 1005 open(traces_path.c_str(), O_CREAT | O_WRONLY | O_APPEND | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 1006 0666)); /* -rw-rw-rw- */ 1007 if (fd < 0) { 1008 MYLOGE("%s: %s\n", traces_path.c_str(), strerror(errno)); 1009 return nullptr; 1010 } 1011 int chmod_ret = fchmod(fd, 0666); 1012 if (chmod_ret < 0) { 1013 MYLOGE("fchmod on %s failed: %s\n", traces_path.c_str(), strerror(errno)); 1014 close(fd); 1015 return nullptr; 1016 } 1017 1018 /* Variables below must be initialized before 'goto' statements */ 1019 int dalvik_found = 0; 1020 int ifd, wfd = -1; 1021 std::set<int> hal_pids = get_interesting_hal_pids(); 1022 1023 /* walk /proc and kill -QUIT all Dalvik processes */ 1024 DIR *proc = opendir("/proc"); 1025 if (proc == NULL) { 1026 MYLOGE("/proc: %s\n", strerror(errno)); 1027 goto error_close_fd; 1028 } 1029 1030 /* use inotify to find when processes are done dumping */ 1031 ifd = inotify_init(); 1032 if (ifd < 0) { 1033 MYLOGE("inotify_init: %s\n", strerror(errno)); 1034 goto error_close_fd; 1035 } 1036 1037 wfd = inotify_add_watch(ifd, traces_path.c_str(), IN_CLOSE_WRITE); 1038 if (wfd < 0) { 1039 MYLOGE("inotify_add_watch(%s): %s\n", traces_path.c_str(), strerror(errno)); 1040 goto error_close_ifd; 1041 } 1042 1043 struct dirent *d; 1044 while ((d = readdir(proc))) { 1045 int pid = atoi(d->d_name); 1046 if (pid <= 0) continue; 1047 1048 char path[PATH_MAX]; 1049 char data[PATH_MAX]; 1050 snprintf(path, sizeof(path), "/proc/%d/exe", pid); 1051 ssize_t len = readlink(path, data, sizeof(data) - 1); 1052 if (len <= 0) { 1053 continue; 1054 } 1055 data[len] = '\0'; 1056 1057 if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) { 1058 /* skip zygote -- it won't dump its stack anyway */ 1059 snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); 1060 int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC)); 1061 len = read(cfd, data, sizeof(data) - 1); 1062 close(cfd); 1063 if (len <= 0) { 1064 continue; 1065 } 1066 data[len] = '\0'; 1067 if (!strncmp(data, "zygote", strlen("zygote"))) { 1068 continue; 1069 } 1070 1071 ++dalvik_found; 1072 uint64_t start = Nanotime(); 1073 if (kill(pid, SIGQUIT)) { 1074 MYLOGE("kill(%d, SIGQUIT): %s\n", pid, strerror(errno)); 1075 continue; 1076 } 1077 1078 /* wait for the writable-close notification from inotify */ 1079 struct pollfd pfd = { ifd, POLLIN, 0 }; 1080 int ret = poll(&pfd, 1, TRACE_DUMP_TIMEOUT_MS); 1081 if (ret < 0) { 1082 MYLOGE("poll: %s\n", strerror(errno)); 1083 } else if (ret == 0) { 1084 MYLOGE("warning: timed out dumping pid %d\n", pid); 1085 } else { 1086 struct inotify_event ie; 1087 read(ifd, &ie, sizeof(ie)); 1088 } 1089 1090 if (lseek(fd, 0, SEEK_END) < 0) { 1091 MYLOGE("lseek: %s\n", strerror(errno)); 1092 } else { 1093 dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n", pid, 1094 (float)(Nanotime() - start) / NANOS_PER_SEC); 1095 } 1096 } else if (should_dump_native_traces(data) || 1097 hal_pids.find(pid) != hal_pids.end()) { 1098 /* dump native process if appropriate */ 1099 if (lseek(fd, 0, SEEK_END) < 0) { 1100 MYLOGE("lseek: %s\n", strerror(errno)); 1101 } else { 1102 static uint16_t timeout_failures = 0; 1103 uint64_t start = Nanotime(); 1104 1105 /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */ 1106 if (timeout_failures == 3) { 1107 dprintf(fd, "too many stack dump failures, skipping...\n"); 1108 } else if (dump_backtrace_to_file_timeout( 1109 pid, kDebuggerdNativeBacktrace, 20, fd) == -1) { 1110 dprintf(fd, "dumping failed, likely due to a timeout\n"); 1111 timeout_failures++; 1112 } else { 1113 timeout_failures = 0; 1114 } 1115 dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n", pid, 1116 (float)(Nanotime() - start) / NANOS_PER_SEC); 1117 } 1118 } 1119 } 1120 1121 if (dalvik_found == 0) { 1122 MYLOGE("Warning: no Dalvik processes found to dump stacks\n"); 1123 } 1124 1125 static std::string dumptraces_path = android::base::StringPrintf( 1126 "%s/bugreport-%s", dirname(traces_path.c_str()), basename(traces_path.c_str())); 1127 if (rename(traces_path.c_str(), dumptraces_path.c_str())) { 1128 MYLOGE("rename(%s, %s): %s\n", traces_path.c_str(), dumptraces_path.c_str(), 1129 strerror(errno)); 1130 goto error_close_ifd; 1131 } 1132 result = dumptraces_path.c_str(); 1133 1134 /* replace the saved [ANR] traces.txt file */ 1135 rename(anrtraces_path.c_str(), traces_path.c_str()); 1136 1137error_close_ifd: 1138 close(ifd); 1139error_close_fd: 1140 close(fd); 1141 return result; 1142} 1143 1144void dump_route_tables() { 1145 DurationReporter duration_reporter("DUMP ROUTE TABLES"); 1146 if (PropertiesHelper::IsDryRun()) return; 1147 const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; 1148 ds.DumpFile("RT_TABLES", RT_TABLES_PATH); 1149 FILE* fp = fopen(RT_TABLES_PATH, "re"); 1150 if (!fp) { 1151 printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); 1152 return; 1153 } 1154 char table[16]; 1155 // Each line has an integer (the table number), a space, and a string (the table name). We only 1156 // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. 1157 // Add a fixed max limit so this doesn't go awry. 1158 for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { 1159 RunCommand("ROUTE TABLE IPv4", {"ip", "-4", "route", "show", "table", table}); 1160 RunCommand("ROUTE TABLE IPv6", {"ip", "-6", "route", "show", "table", table}); 1161 } 1162 fclose(fp); 1163} 1164 1165// TODO: make this function thread safe if sections are generated in parallel. 1166void Dumpstate::UpdateProgress(int32_t delta) { 1167 if (progress_ == nullptr) { 1168 MYLOGE("UpdateProgress: progress_ not set\n"); 1169 return; 1170 } 1171 1172 // Always update progess so stats can be tuned... 1173 bool max_changed = progress_->Inc(delta); 1174 1175 // ...but only notifiy listeners when necessary. 1176 if (!update_progress_) return; 1177 1178 int progress = progress_->Get(); 1179 int max = progress_->GetMax(); 1180 1181 // adjusts max on the fly 1182 if (max_changed && listener_ != nullptr) { 1183 listener_->onMaxProgressUpdated(max); 1184 } 1185 1186 int32_t last_update_delta = progress - last_updated_progress_; 1187 if (last_updated_progress_ > 0 && last_update_delta < update_progress_threshold_) { 1188 return; 1189 } 1190 last_updated_progress_ = progress; 1191 1192 if (control_socket_fd_ >= 0) { 1193 dprintf(control_socket_fd_, "PROGRESS:%d/%d\n", progress, max); 1194 fsync(control_socket_fd_); 1195 } 1196 1197 if (listener_ != nullptr) { 1198 if (progress % 100 == 0) { 1199 // We don't want to spam logcat, so only log multiples of 100. 1200 MYLOGD("Setting progress (%s): %d/%d\n", listener_name_.c_str(), progress, max); 1201 } else { 1202 // stderr is ignored on normal invocations, but useful when calling 1203 // /system/bin/dumpstate directly for debuggging. 1204 fprintf(stderr, "Setting progress (%s): %d/%d\n", listener_name_.c_str(), progress, max); 1205 } 1206 listener_->onProgressUpdated(progress); 1207 } 1208} 1209 1210void Dumpstate::TakeScreenshot(const std::string& path) { 1211 const std::string& real_path = path.empty() ? screenshot_path_ : path; 1212 int status = 1213 RunCommand("", {"/system/bin/screencap", "-p", real_path}, 1214 CommandOptions::WithTimeout(10).Always().DropRoot().RedirectStderr().Build()); 1215 if (status == 0) { 1216 MYLOGD("Screenshot saved on %s\n", real_path.c_str()); 1217 } else { 1218 MYLOGE("Failed to take screenshot on %s\n", real_path.c_str()); 1219 } 1220} 1221 1222bool is_dir(const char* pathname) { 1223 struct stat info; 1224 if (stat(pathname, &info) == -1) { 1225 return false; 1226 } 1227 return S_ISDIR(info.st_mode); 1228} 1229 1230time_t get_mtime(int fd, time_t default_mtime) { 1231 struct stat info; 1232 if (fstat(fd, &info) == -1) { 1233 return default_mtime; 1234 } 1235 return info.st_mtime; 1236} 1237 1238void dump_emmc_ecsd(const char *ext_csd_path) { 1239 // List of interesting offsets 1240 struct hex { 1241 char str[2]; 1242 }; 1243 static const size_t EXT_CSD_REV = 192 * sizeof(hex); 1244 static const size_t EXT_PRE_EOL_INFO = 267 * sizeof(hex); 1245 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_A = 268 * sizeof(hex); 1246 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_B = 269 * sizeof(hex); 1247 1248 std::string buffer; 1249 if (!android::base::ReadFileToString(ext_csd_path, &buffer)) { 1250 return; 1251 } 1252 1253 printf("------ %s Extended CSD ------\n", ext_csd_path); 1254 1255 if (buffer.length() < (EXT_CSD_REV + sizeof(hex))) { 1256 printf("*** %s: truncated content %zu\n\n", ext_csd_path, buffer.length()); 1257 return; 1258 } 1259 1260 int ext_csd_rev = 0; 1261 std::string sub = buffer.substr(EXT_CSD_REV, sizeof(hex)); 1262 if (sscanf(sub.c_str(), "%2x", &ext_csd_rev) != 1) { 1263 printf("*** %s: EXT_CSD_REV parse error \"%s\"\n\n", ext_csd_path, sub.c_str()); 1264 return; 1265 } 1266 1267 static const char *ver_str[] = { 1268 "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0" 1269 }; 1270 printf("rev 1.%d (MMC %s)\n", ext_csd_rev, 1271 (ext_csd_rev < (int)(sizeof(ver_str) / sizeof(ver_str[0]))) ? ver_str[ext_csd_rev] 1272 : "Unknown"); 1273 if (ext_csd_rev < 7) { 1274 printf("\n"); 1275 return; 1276 } 1277 1278 if (buffer.length() < (EXT_PRE_EOL_INFO + sizeof(hex))) { 1279 printf("*** %s: truncated content %zu\n\n", ext_csd_path, buffer.length()); 1280 return; 1281 } 1282 1283 int ext_pre_eol_info = 0; 1284 sub = buffer.substr(EXT_PRE_EOL_INFO, sizeof(hex)); 1285 if (sscanf(sub.c_str(), "%2x", &ext_pre_eol_info) != 1) { 1286 printf("*** %s: PRE_EOL_INFO parse error \"%s\"\n\n", ext_csd_path, sub.c_str()); 1287 return; 1288 } 1289 1290 static const char *eol_str[] = { 1291 "Undefined", 1292 "Normal", 1293 "Warning (consumed 80% of reserve)", 1294 "Urgent (consumed 90% of reserve)" 1295 }; 1296 printf( 1297 "PRE_EOL_INFO %d (MMC %s)\n", ext_pre_eol_info, 1298 eol_str[(ext_pre_eol_info < (int)(sizeof(eol_str) / sizeof(eol_str[0]))) ? ext_pre_eol_info 1299 : 0]); 1300 1301 for (size_t lifetime = EXT_DEVICE_LIFE_TIME_EST_TYP_A; 1302 lifetime <= EXT_DEVICE_LIFE_TIME_EST_TYP_B; 1303 lifetime += sizeof(hex)) { 1304 int ext_device_life_time_est; 1305 static const char *est_str[] = { 1306 "Undefined", 1307 "0-10% of device lifetime used", 1308 "10-20% of device lifetime used", 1309 "20-30% of device lifetime used", 1310 "30-40% of device lifetime used", 1311 "40-50% of device lifetime used", 1312 "50-60% of device lifetime used", 1313 "60-70% of device lifetime used", 1314 "70-80% of device lifetime used", 1315 "80-90% of device lifetime used", 1316 "90-100% of device lifetime used", 1317 "Exceeded the maximum estimated device lifetime", 1318 }; 1319 1320 if (buffer.length() < (lifetime + sizeof(hex))) { 1321 printf("*** %s: truncated content %zu\n", ext_csd_path, buffer.length()); 1322 break; 1323 } 1324 1325 ext_device_life_time_est = 0; 1326 sub = buffer.substr(lifetime, sizeof(hex)); 1327 if (sscanf(sub.c_str(), "%2x", &ext_device_life_time_est) != 1) { 1328 printf("*** %s: DEVICE_LIFE_TIME_EST_TYP_%c parse error \"%s\"\n", ext_csd_path, 1329 (unsigned)((lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) / sizeof(hex)) + 'A', 1330 sub.c_str()); 1331 continue; 1332 } 1333 printf("DEVICE_LIFE_TIME_EST_TYP_%c %d (MMC %s)\n", 1334 (unsigned)((lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) / sizeof(hex)) + 'A', 1335 ext_device_life_time_est, 1336 est_str[(ext_device_life_time_est < (int)(sizeof(est_str) / sizeof(est_str[0]))) 1337 ? ext_device_life_time_est 1338 : 0]); 1339 } 1340 1341 printf("\n"); 1342} 1343