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 #include <dirent.h> 18 #include <errno.h> 19 #include <fcntl.h> 20 #include <limits.h> 21 #include <poll.h> 22 #include <signal.h> 23 #include <stdarg.h> 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <string> 27 #include <string.h> 28 #include <sys/capability.h> 29 #include <sys/inotify.h> 30 #include <sys/stat.h> 31 #include <sys/sysconf.h> 32 #include <sys/time.h> 33 #include <sys/wait.h> 34 #include <sys/klog.h> 35 #include <time.h> 36 #include <unistd.h> 37 #include <vector> 38 #include <sys/prctl.h> 39 40 #define LOG_TAG "dumpstate" 41 #include <cutils/debugger.h> 42 #include <cutils/log.h> 43 #include <cutils/properties.h> 44 #include <cutils/sockets.h> 45 #include <private/android_filesystem_config.h> 46 47 #include <selinux/android.h> 48 49 #include "dumpstate.h" 50 51 static const int64_t NANOS_PER_SEC = 1000000000; 52 53 /* list of native processes to include in the native dumps */ 54 // This matches the /proc/pid/exe link instead of /proc/pid/cmdline. 55 static const char* native_processes_to_dump[] = { 56 "/system/bin/audioserver", 57 "/system/bin/cameraserver", 58 "/system/bin/drmserver", 59 "/system/bin/mediacodec", // media.codec 60 "/system/bin/mediadrmserver", 61 "/system/bin/mediaextractor", // media.extractor 62 "/system/bin/mediaserver", 63 "/system/bin/sdcard", 64 "/system/bin/surfaceflinger", 65 "/system/bin/vehicle_network_service", 66 NULL, 67 }; 68 69 DurationReporter::DurationReporter(const char *title) : DurationReporter(title, stdout) {} 70 71 DurationReporter::DurationReporter(const char *title, FILE *out) { 72 title_ = title; 73 if (title) { 74 started_ = DurationReporter::nanotime(); 75 } 76 out_ = out; 77 } 78 79 DurationReporter::~DurationReporter() { 80 if (title_) { 81 uint64_t elapsed = DurationReporter::nanotime() - started_; 82 // Use "Yoda grammar" to make it easier to grep|sort sections. 83 if (out_) { 84 fprintf(out_, "------ %.3fs was the duration of '%s' ------\n", 85 (float) elapsed / NANOS_PER_SEC, title_); 86 } else { 87 MYLOGD("Duration of '%s': %.3fs\n", title_, (float) elapsed / NANOS_PER_SEC); 88 } 89 } 90 } 91 92 uint64_t DurationReporter::DurationReporter::nanotime() { 93 struct timespec ts; 94 clock_gettime(CLOCK_MONOTONIC, &ts); 95 return (uint64_t) ts.tv_sec * NANOS_PER_SEC + ts.tv_nsec; 96 } 97 98 void for_each_userid(void (*func)(int), const char *header) { 99 ON_DRY_RUN_RETURN(); 100 DIR *d; 101 struct dirent *de; 102 103 if (header) printf("\n------ %s ------\n", header); 104 func(0); 105 106 if (!(d = opendir("/data/system/users"))) { 107 printf("Failed to open /data/system/users (%s)\n", strerror(errno)); 108 return; 109 } 110 111 while ((de = readdir(d))) { 112 int userid; 113 if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { 114 continue; 115 } 116 func(userid); 117 } 118 119 closedir(d); 120 } 121 122 static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { 123 DIR *d; 124 struct dirent *de; 125 126 if (!(d = opendir("/proc"))) { 127 printf("Failed to open /proc (%s)\n", strerror(errno)); 128 return; 129 } 130 131 if (header) printf("\n------ %s ------\n", header); 132 while ((de = readdir(d))) { 133 int pid; 134 int fd; 135 char cmdpath[255]; 136 char cmdline[255]; 137 138 if (!(pid = atoi(de->d_name))) { 139 continue; 140 } 141 142 memset(cmdline, 0, sizeof(cmdline)); 143 144 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/cmdline", pid); 145 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 146 TEMP_FAILURE_RETRY(read(fd, cmdline, sizeof(cmdline) - 2)); 147 close(fd); 148 if (cmdline[0]) { 149 helper(pid, cmdline, arg); 150 continue; 151 } 152 } 153 154 // if no cmdline, a kernel thread has comm 155 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/comm", pid); 156 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 157 TEMP_FAILURE_RETRY(read(fd, cmdline + 1, sizeof(cmdline) - 4)); 158 close(fd); 159 if (cmdline[1]) { 160 cmdline[0] = '['; 161 size_t len = strcspn(cmdline, "\f\b\r\n"); 162 cmdline[len] = ']'; 163 cmdline[len+1] = '\0'; 164 } 165 } 166 if (!cmdline[0]) { 167 strcpy(cmdline, "N/A"); 168 } 169 helper(pid, cmdline, arg); 170 } 171 172 closedir(d); 173 } 174 175 static void for_each_pid_helper(int pid, const char *cmdline, void *arg) { 176 for_each_pid_func *func = (for_each_pid_func*) arg; 177 func(pid, cmdline); 178 } 179 180 void for_each_pid(for_each_pid_func func, const char *header) { 181 ON_DRY_RUN_RETURN(); 182 __for_each_pid(for_each_pid_helper, header, (void *)func); 183 } 184 185 static void for_each_tid_helper(int pid, const char *cmdline, void *arg) { 186 DIR *d; 187 struct dirent *de; 188 char taskpath[255]; 189 for_each_tid_func *func = (for_each_tid_func *) arg; 190 191 snprintf(taskpath, sizeof(taskpath), "/proc/%d/task", pid); 192 193 if (!(d = opendir(taskpath))) { 194 printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); 195 return; 196 } 197 198 func(pid, pid, cmdline); 199 200 while ((de = readdir(d))) { 201 int tid; 202 int fd; 203 char commpath[255]; 204 char comm[255]; 205 206 if (!(tid = atoi(de->d_name))) { 207 continue; 208 } 209 210 if (tid == pid) 211 continue; 212 213 snprintf(commpath, sizeof(commpath), "/proc/%d/comm", tid); 214 memset(comm, 0, sizeof(comm)); 215 if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { 216 strcpy(comm, "N/A"); 217 } else { 218 char *c; 219 TEMP_FAILURE_RETRY(read(fd, comm, sizeof(comm) - 2)); 220 close(fd); 221 222 c = strrchr(comm, '\n'); 223 if (c) { 224 *c = '\0'; 225 } 226 } 227 func(pid, tid, comm); 228 } 229 230 closedir(d); 231 } 232 233 void for_each_tid(for_each_tid_func func, const char *header) { 234 ON_DRY_RUN_RETURN(); 235 __for_each_pid(for_each_tid_helper, header, (void *) func); 236 } 237 238 void show_wchan(int pid, int tid, const char *name) { 239 ON_DRY_RUN_RETURN(); 240 char path[255]; 241 char buffer[255]; 242 int fd, ret, save_errno; 243 char name_buffer[255]; 244 245 memset(buffer, 0, sizeof(buffer)); 246 247 snprintf(path, sizeof(path), "/proc/%d/wchan", tid); 248 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 249 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 250 return; 251 } 252 253 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 254 save_errno = errno; 255 close(fd); 256 257 if (ret < 0) { 258 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 259 return; 260 } 261 262 snprintf(name_buffer, sizeof(name_buffer), "%*s%s", 263 pid == tid ? 0 : 3, "", name); 264 265 printf("%-7d %-32s %s\n", tid, name_buffer, buffer); 266 267 return; 268 } 269 270 // print time in centiseconds 271 static void snprcent(char *buffer, size_t len, size_t spc, 272 unsigned long long time) { 273 static long hz; // cache discovered hz 274 275 if (hz <= 0) { 276 hz = sysconf(_SC_CLK_TCK); 277 if (hz <= 0) { 278 hz = 1000; 279 } 280 } 281 282 // convert to centiseconds 283 time = (time * 100 + (hz / 2)) / hz; 284 285 char str[16]; 286 287 snprintf(str, sizeof(str), " %llu.%02u", 288 time / 100, (unsigned)(time % 100)); 289 size_t offset = strlen(buffer); 290 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 291 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 292 } 293 294 // print permille as a percent 295 static void snprdec(char *buffer, size_t len, size_t spc, unsigned permille) { 296 char str[16]; 297 298 snprintf(str, sizeof(str), " %u.%u%%", permille / 10, permille % 10); 299 size_t offset = strlen(buffer); 300 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 301 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 302 } 303 304 void show_showtime(int pid, const char *name) { 305 ON_DRY_RUN_RETURN(); 306 char path[255]; 307 char buffer[1023]; 308 int fd, ret, save_errno; 309 310 memset(buffer, 0, sizeof(buffer)); 311 312 snprintf(path, sizeof(path), "/proc/%d/stat", pid); 313 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 314 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 315 return; 316 } 317 318 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 319 save_errno = errno; 320 close(fd); 321 322 if (ret < 0) { 323 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 324 return; 325 } 326 327 // field 14 is utime 328 // field 15 is stime 329 // field 42 is iotime 330 unsigned long long utime = 0, stime = 0, iotime = 0; 331 if (sscanf(buffer, 332 "%*u %*s %*s %*d %*d %*d %*d %*d %*d %*d %*d " 333 "%*d %*d %llu %llu %*d %*d %*d %*d %*d %*d " 334 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " 335 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %llu ", 336 &utime, &stime, &iotime) != 3) { 337 return; 338 } 339 340 unsigned long long total = utime + stime; 341 if (!total) { 342 return; 343 } 344 345 unsigned permille = (iotime * 1000 + (total / 2)) / total; 346 if (permille > 1000) { 347 permille = 1000; 348 } 349 350 // try to beautify and stabilize columns at <80 characters 351 snprintf(buffer, sizeof(buffer), "%-6d%s", pid, name); 352 if ((name[0] != '[') || utime) { 353 snprcent(buffer, sizeof(buffer), 57, utime); 354 } 355 snprcent(buffer, sizeof(buffer), 65, stime); 356 if ((name[0] != '[') || iotime) { 357 snprcent(buffer, sizeof(buffer), 73, iotime); 358 } 359 if (iotime) { 360 snprdec(buffer, sizeof(buffer), 79, permille); 361 } 362 puts(buffer); // adds a trailing newline 363 364 return; 365 } 366 367 void do_dmesg() { 368 const char *title = "KERNEL LOG (dmesg)"; 369 DurationReporter duration_reporter(title); 370 printf("------ %s ------\n", title); 371 372 ON_DRY_RUN_RETURN(); 373 /* Get size of kernel buffer */ 374 int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); 375 if (size <= 0) { 376 printf("Unexpected klogctl return value: %d\n\n", size); 377 return; 378 } 379 char *buf = (char *) malloc(size + 1); 380 if (buf == NULL) { 381 printf("memory allocation failed\n\n"); 382 return; 383 } 384 int retval = klogctl(KLOG_READ_ALL, buf, size); 385 if (retval < 0) { 386 printf("klogctl failure\n\n"); 387 free(buf); 388 return; 389 } 390 buf[retval] = '\0'; 391 printf("%s\n\n", buf); 392 free(buf); 393 return; 394 } 395 396 void do_showmap(int pid, const char *name) { 397 char title[255]; 398 char arg[255]; 399 400 snprintf(title, sizeof(title), "SHOW MAP %d (%s)", pid, name); 401 snprintf(arg, sizeof(arg), "%d", pid); 402 run_command(title, 10, SU_PATH, "root", "showmap", "-q", arg, NULL); 403 } 404 405 static int _dump_file_from_fd(const char *title, const char *path, int fd) { 406 if (title) { 407 printf("------ %s (%s", title, path); 408 409 struct stat st; 410 // Only show the modification time of non-device files. 411 size_t path_len = strlen(path); 412 if ((path_len < 6 || memcmp(path, "/proc/", 6)) && 413 (path_len < 5 || memcmp(path, "/sys/", 5)) && 414 (path_len < 3 || memcmp(path, "/d/", 3)) && 415 !fstat(fd, &st)) { 416 char stamp[80]; 417 time_t mtime = st.st_mtime; 418 strftime(stamp, sizeof(stamp), "%Y-%m-%d %H:%M:%S", localtime(&mtime)); 419 printf(": %s", stamp); 420 } 421 printf(") ------\n"); 422 } 423 ON_DRY_RUN({ update_progress(WEIGHT_FILE); close(fd); return 0; }); 424 425 bool newline = false; 426 fd_set read_set; 427 struct timeval tm; 428 while (1) { 429 FD_ZERO(&read_set); 430 FD_SET(fd, &read_set); 431 /* Timeout if no data is read for 30 seconds. */ 432 tm.tv_sec = 30; 433 tm.tv_usec = 0; 434 uint64_t elapsed = DurationReporter::nanotime(); 435 int ret = TEMP_FAILURE_RETRY(select(fd + 1, &read_set, NULL, NULL, &tm)); 436 if (ret == -1) { 437 printf("*** %s: select failed: %s\n", path, strerror(errno)); 438 newline = true; 439 break; 440 } else if (ret == 0) { 441 elapsed = DurationReporter::nanotime() - elapsed; 442 printf("*** %s: Timed out after %.3fs\n", path, 443 (float) elapsed / NANOS_PER_SEC); 444 newline = true; 445 break; 446 } else { 447 char buffer[65536]; 448 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 449 if (bytes_read > 0) { 450 fwrite(buffer, bytes_read, 1, stdout); 451 newline = (buffer[bytes_read-1] == '\n'); 452 } else { 453 if (bytes_read == -1) { 454 printf("*** %s: Failed to read from fd: %s", path, strerror(errno)); 455 newline = true; 456 } 457 break; 458 } 459 } 460 } 461 update_progress(WEIGHT_FILE); 462 close(fd); 463 464 if (!newline) printf("\n"); 465 if (title) printf("\n"); 466 return 0; 467 } 468 469 /* prints the contents of a file */ 470 int dump_file(const char *title, const char *path) { 471 DurationReporter duration_reporter(title); 472 int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 473 if (fd < 0) { 474 int err = errno; 475 printf("*** %s: %s\n", path, strerror(err)); 476 if (title) printf("\n"); 477 return -1; 478 } 479 return _dump_file_from_fd(title, path, fd); 480 } 481 482 int read_file_as_long(const char *path, long int *output) { 483 int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 484 if (fd < 0) { 485 int err = errno; 486 MYLOGE("Error opening file descriptor for %s: %s\n", path, strerror(err)); 487 return -1; 488 } 489 char buffer[50]; 490 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 491 if (bytes_read == -1) { 492 MYLOGE("Error reading file %s: %s\n", path, strerror(errno)); 493 return -2; 494 } 495 if (bytes_read == 0) { 496 MYLOGE("File %s is empty\n", path); 497 return -3; 498 } 499 *output = atoi(buffer); 500 return 0; 501 } 502 503 /* calls skip to gate calling dump_from_fd recursively 504 * in the specified directory. dump_from_fd defaults to 505 * dump_file_from_fd above when set to NULL. skip defaults 506 * to false when set to NULL. dump_from_fd will always be 507 * called with title NULL. 508 */ 509 int dump_files(const char *title, const char *dir, 510 bool (*skip)(const char *path), 511 int (*dump_from_fd)(const char *title, const char *path, int fd)) { 512 DurationReporter duration_reporter(title); 513 DIR *dirp; 514 struct dirent *d; 515 char *newpath = NULL; 516 const char *slash = "/"; 517 int fd, retval = 0; 518 519 if (title) { 520 printf("------ %s (%s) ------\n", title, dir); 521 } 522 ON_DRY_RUN_RETURN(0); 523 524 if (dir[strlen(dir) - 1] == '/') { 525 ++slash; 526 } 527 dirp = opendir(dir); 528 if (dirp == NULL) { 529 retval = -errno; 530 MYLOGE("%s: %s\n", dir, strerror(errno)); 531 return retval; 532 } 533 534 if (!dump_from_fd) { 535 dump_from_fd = dump_file_from_fd; 536 } 537 for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { 538 if ((d->d_name[0] == '.') 539 && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) 540 || (d->d_name[1] == '\0'))) { 541 continue; 542 } 543 asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, 544 (d->d_type == DT_DIR) ? "/" : ""); 545 if (!newpath) { 546 retval = -errno; 547 continue; 548 } 549 if (skip && (*skip)(newpath)) { 550 continue; 551 } 552 if (d->d_type == DT_DIR) { 553 int ret = dump_files(NULL, newpath, skip, dump_from_fd); 554 if (ret < 0) { 555 retval = ret; 556 } 557 continue; 558 } 559 fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 560 if (fd < 0) { 561 retval = fd; 562 printf("*** %s: %s\n", newpath, strerror(errno)); 563 continue; 564 } 565 (*dump_from_fd)(NULL, newpath, fd); 566 } 567 closedir(dirp); 568 if (title) { 569 printf("\n"); 570 } 571 return retval; 572 } 573 574 /* fd must have been opened with the flag O_NONBLOCK. With this flag set, 575 * it's possible to avoid issues where opening the file itself can get 576 * stuck. 577 */ 578 int dump_file_from_fd(const char *title, const char *path, int fd) { 579 int flags = fcntl(fd, F_GETFL); 580 if (flags == -1) { 581 printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); 582 close(fd); 583 return -1; 584 } else if (!(flags & O_NONBLOCK)) { 585 printf("*** %s: fd must have O_NONBLOCK set.\n", path); 586 close(fd); 587 return -1; 588 } 589 return _dump_file_from_fd(title, path, fd); 590 } 591 592 bool waitpid_with_timeout(pid_t pid, int timeout_seconds, int* status) { 593 sigset_t child_mask, old_mask; 594 sigemptyset(&child_mask); 595 sigaddset(&child_mask, SIGCHLD); 596 597 if (sigprocmask(SIG_BLOCK, &child_mask, &old_mask) == -1) { 598 printf("*** sigprocmask failed: %s\n", strerror(errno)); 599 return false; 600 } 601 602 struct timespec ts; 603 ts.tv_sec = timeout_seconds; 604 ts.tv_nsec = 0; 605 int ret = TEMP_FAILURE_RETRY(sigtimedwait(&child_mask, NULL, &ts)); 606 int saved_errno = errno; 607 // Set the signals back the way they were. 608 if (sigprocmask(SIG_SETMASK, &old_mask, NULL) == -1) { 609 printf("*** sigprocmask failed: %s\n", strerror(errno)); 610 if (ret == 0) { 611 return false; 612 } 613 } 614 if (ret == -1) { 615 errno = saved_errno; 616 if (errno == EAGAIN) { 617 errno = ETIMEDOUT; 618 } else { 619 printf("*** sigtimedwait failed: %s\n", strerror(errno)); 620 } 621 return false; 622 } 623 624 pid_t child_pid = waitpid(pid, status, WNOHANG); 625 if (child_pid != pid) { 626 if (child_pid != -1) { 627 printf("*** Waiting for pid %d, got pid %d instead\n", pid, child_pid); 628 } else { 629 printf("*** waitpid failed: %s\n", strerror(errno)); 630 } 631 return false; 632 } 633 return true; 634 } 635 636 // TODO: refactor all those commands that convert args 637 void format_args(const char* command, const char *args[], std::string *string); 638 639 int run_command(const char *title, int timeout_seconds, const char *command, ...) { 640 DurationReporter duration_reporter(title); 641 fflush(stdout); 642 643 const char *args[1024] = {command}; 644 size_t arg; 645 va_list ap; 646 va_start(ap, command); 647 if (title) printf("------ %s (%s", title, command); 648 bool null_terminated = false; 649 for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) { 650 args[arg] = va_arg(ap, const char *); 651 if (args[arg] == nullptr) { 652 null_terminated = true; 653 break; 654 } 655 // TODO: null_terminated check is not really working; line below would crash dumpstate if 656 // nullptr is missing 657 if (title) printf(" %s", args[arg]); 658 } 659 if (title) printf(") ------\n"); 660 fflush(stdout); 661 if (!null_terminated) { 662 // Fail now, otherwise execvp() call on run_command_always() might hang. 663 std::string cmd; 664 format_args(command, args, &cmd); 665 MYLOGE("skipping command %s because its args were not NULL-terminated", cmd.c_str()); 666 return -1; 667 } 668 669 ON_DRY_RUN({ update_progress(timeout_seconds); va_end(ap); return 0; }); 670 671 int status = run_command_always(title, DONT_DROP_ROOT, NORMAL_STDOUT, timeout_seconds, args); 672 va_end(ap); 673 return status; 674 } 675 676 int run_command_as_shell(const char *title, int timeout_seconds, const char *command, ...) { 677 DurationReporter duration_reporter(title); 678 fflush(stdout); 679 680 const char *args[1024] = {command}; 681 size_t arg; 682 va_list ap; 683 va_start(ap, command); 684 if (title) printf("------ %s (%s", title, command); 685 bool null_terminated = false; 686 for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) { 687 args[arg] = va_arg(ap, const char *); 688 if (args[arg] == nullptr) { 689 null_terminated = true; 690 break; 691 } 692 // TODO: null_terminated check is not really working; line below would crash dumpstate if 693 // nullptr is missing 694 if (title) printf(" %s", args[arg]); 695 } 696 if (title) printf(") ------\n"); 697 fflush(stdout); 698 if (!null_terminated) { 699 // Fail now, otherwise execvp() call on run_command_always() might hang. 700 std::string cmd; 701 format_args(command, args, &cmd); 702 MYLOGE("skipping command %s because its args were not NULL-terminated", cmd.c_str()); 703 return -1; 704 } 705 706 ON_DRY_RUN({ update_progress(timeout_seconds); va_end(ap); return 0; }); 707 708 int status = run_command_always(title, DROP_ROOT, NORMAL_STDOUT, timeout_seconds, args); 709 va_end(ap); 710 return status; 711 } 712 713 /* forks a command and waits for it to finish */ 714 int run_command_always(const char *title, RootMode root_mode, StdoutMode stdout_mode, 715 int timeout_seconds, const char *args[]) { 716 bool silent = (stdout_mode == REDIRECT_TO_STDERR); 717 // TODO: need to check if args is null-terminated, otherwise execvp will crash dumpstate 718 719 /* TODO: for now we're simplifying the progress calculation by using the timeout as the weight. 720 * It's a good approximation for most cases, except when calling dumpsys, where its weight 721 * should be much higher proportionally to its timeout. */ 722 int weight = timeout_seconds; 723 724 const char *command = args[0]; 725 uint64_t start = DurationReporter::nanotime(); 726 pid_t pid = fork(); 727 728 /* handle error case */ 729 if (pid < 0) { 730 if (!silent) printf("*** fork: %s\n", strerror(errno)); 731 MYLOGE("*** fork: %s\n", strerror(errno)); 732 return pid; 733 } 734 735 /* handle child case */ 736 if (pid == 0) { 737 if (root_mode == DROP_ROOT && !drop_root_user()) { 738 if (!silent) printf("*** fail todrop root before running %s: %s\n", command, 739 strerror(errno)); 740 MYLOGE("*** could not drop root before running %s: %s\n", command, strerror(errno)); 741 return -1; 742 } 743 744 if (silent) { 745 // Redirect stderr to stdout 746 dup2(STDERR_FILENO, STDOUT_FILENO); 747 } 748 749 /* make sure the child dies when dumpstate dies */ 750 prctl(PR_SET_PDEATHSIG, SIGKILL); 751 752 /* just ignore SIGPIPE, will go down with parent's */ 753 struct sigaction sigact; 754 memset(&sigact, 0, sizeof(sigact)); 755 sigact.sa_handler = SIG_IGN; 756 sigaction(SIGPIPE, &sigact, NULL); 757 758 execvp(command, (char**) args); 759 // execvp's result will be handled after waitpid_with_timeout() below, but if it failed, 760 // it's safer to exit dumpstate. 761 MYLOGD("execvp on command '%s' failed (error: %s)", command, strerror(errno)); 762 fflush(stdout); 763 // Must call _exit (instead of exit), otherwise it will corrupt the zip file. 764 _exit(EXIT_FAILURE); 765 } 766 767 /* handle parent case */ 768 int status; 769 bool ret = waitpid_with_timeout(pid, timeout_seconds, &status); 770 uint64_t elapsed = DurationReporter::nanotime() - start; 771 std::string cmd; // used to log command and its args 772 if (!ret) { 773 if (errno == ETIMEDOUT) { 774 format_args(command, args, &cmd); 775 if (!silent) printf("*** command '%s' timed out after %.3fs (killing pid %d)\n", 776 cmd.c_str(), (float) elapsed / NANOS_PER_SEC, pid); 777 MYLOGE("command '%s' timed out after %.3fs (killing pid %d)\n", cmd.c_str(), 778 (float) elapsed / NANOS_PER_SEC, pid); 779 } else { 780 format_args(command, args, &cmd); 781 if (!silent) printf("*** command '%s': Error after %.4fs (killing pid %d)\n", 782 cmd.c_str(), (float) elapsed / NANOS_PER_SEC, pid); 783 MYLOGE("command '%s': Error after %.4fs (killing pid %d)\n", cmd.c_str(), 784 (float) elapsed / NANOS_PER_SEC, pid); 785 } 786 kill(pid, SIGTERM); 787 if (!waitpid_with_timeout(pid, 5, NULL)) { 788 kill(pid, SIGKILL); 789 if (!waitpid_with_timeout(pid, 5, NULL)) { 790 if (!silent) printf("could not kill command '%s' (pid %d) even with SIGKILL.\n", 791 command, pid); 792 MYLOGE("could not kill command '%s' (pid %d) even with SIGKILL.\n", command, pid); 793 } 794 } 795 return -1; 796 } else if (status) { 797 format_args(command, args, &cmd); 798 if (!silent) printf("*** command '%s' failed: %s\n", cmd.c_str(), strerror(errno)); 799 MYLOGE("command '%s' failed: %s\n", cmd.c_str(), strerror(errno)); 800 return -2; 801 } 802 803 if (WIFSIGNALED(status)) { 804 if (!silent) printf("*** %s: Killed by signal %d\n", command, WTERMSIG(status)); 805 MYLOGE("*** %s: Killed by signal %d\n", command, WTERMSIG(status)); 806 } else if (WIFEXITED(status) && WEXITSTATUS(status) > 0) { 807 if (!silent) printf("*** %s: Exit code %d\n", command, WEXITSTATUS(status)); 808 MYLOGE("*** %s: Exit code %d\n", command, WEXITSTATUS(status)); 809 } 810 811 if (weight > 0) { 812 update_progress(weight); 813 } 814 return status; 815 } 816 817 bool drop_root_user() { 818 if (getgid() == AID_SHELL && getuid() == AID_SHELL) { 819 MYLOGD("drop_root_user(): already running as Shell"); 820 return true; 821 } 822 /* ensure we will keep capabilities when we drop root */ 823 if (prctl(PR_SET_KEEPCAPS, 1) < 0) { 824 MYLOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); 825 return false; 826 } 827 828 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, 829 AID_MOUNT, AID_INET, AID_NET_BW_STATS, AID_READPROC }; 830 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 831 MYLOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); 832 return false; 833 } 834 if (setgid(AID_SHELL) != 0) { 835 MYLOGE("Unable to setgid, aborting: %s\n", strerror(errno)); 836 return false; 837 } 838 if (setuid(AID_SHELL) != 0) { 839 MYLOGE("Unable to setuid, aborting: %s\n", strerror(errno)); 840 return false; 841 } 842 843 struct __user_cap_header_struct capheader; 844 struct __user_cap_data_struct capdata[2]; 845 memset(&capheader, 0, sizeof(capheader)); 846 memset(&capdata, 0, sizeof(capdata)); 847 capheader.version = _LINUX_CAPABILITY_VERSION_3; 848 capheader.pid = 0; 849 850 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); 851 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); 852 capdata[0].inheritable = 0; 853 capdata[1].inheritable = 0; 854 855 if (capset(&capheader, &capdata[0]) < 0) { 856 MYLOGE("capset failed: %s\n", strerror(errno)); 857 return false; 858 } 859 860 return true; 861 } 862 863 void send_broadcast(const std::string& action, const std::vector<std::string>& args) { 864 if (args.size() > 1000) { 865 MYLOGE("send_broadcast: too many arguments (%d)\n", (int) args.size()); 866 return; 867 } 868 const char *am_args[1024] = { "/system/bin/am", "broadcast", "--user", "0", "-a", 869 action.c_str() }; 870 size_t am_index = 5; // Starts at the index of last initial value above. 871 for (const std::string& arg : args) { 872 am_args[++am_index] = arg.c_str(); 873 } 874 // Always terminate with NULL. 875 am_args[am_index + 1] = NULL; 876 std::string args_string; 877 format_args(am_index + 1, am_args, &args_string); 878 MYLOGD("send_broadcast command: %s\n", args_string.c_str()); 879 run_command_always(NULL, DROP_ROOT, REDIRECT_TO_STDERR, 20, am_args); 880 } 881 882 size_t num_props = 0; 883 static char* props[2000]; 884 885 static void print_prop(const char *key, const char *name, void *user) { 886 (void) user; 887 if (num_props < sizeof(props) / sizeof(props[0])) { 888 char buf[PROPERTY_KEY_MAX + PROPERTY_VALUE_MAX + 10]; 889 snprintf(buf, sizeof(buf), "[%s]: [%s]\n", key, name); 890 props[num_props++] = strdup(buf); 891 } 892 } 893 894 static int compare_prop(const void *a, const void *b) { 895 return strcmp(*(char * const *) a, *(char * const *) b); 896 } 897 898 /* prints all the system properties */ 899 void print_properties() { 900 const char* title = "SYSTEM PROPERTIES"; 901 DurationReporter duration_reporter(title); 902 printf("------ %s ------\n", title); 903 ON_DRY_RUN_RETURN(); 904 size_t i; 905 num_props = 0; 906 property_list(print_prop, NULL); 907 qsort(&props, num_props, sizeof(props[0]), compare_prop); 908 909 for (i = 0; i < num_props; ++i) { 910 fputs(props[i], stdout); 911 free(props[i]); 912 } 913 printf("\n"); 914 } 915 916 int open_socket(const char *service) { 917 int s = android_get_control_socket(service); 918 if (s < 0) { 919 MYLOGE("android_get_control_socket(%s): %s\n", service, strerror(errno)); 920 exit(1); 921 } 922 fcntl(s, F_SETFD, FD_CLOEXEC); 923 if (listen(s, 4) < 0) { 924 MYLOGE("listen(control socket): %s\n", strerror(errno)); 925 exit(1); 926 } 927 928 struct sockaddr addr; 929 socklen_t alen = sizeof(addr); 930 int fd = accept(s, &addr, &alen); 931 if (fd < 0) { 932 MYLOGE("accept(control socket): %s\n", strerror(errno)); 933 exit(1); 934 } 935 936 return fd; 937 } 938 939 /* redirect output to a service control socket */ 940 void redirect_to_socket(FILE *redirect, const char *service) { 941 int fd = open_socket(service); 942 fflush(redirect); 943 dup2(fd, fileno(redirect)); 944 close(fd); 945 } 946 947 // TODO: should call is_valid_output_file and/or be merged into it. 948 void create_parent_dirs(const char *path) { 949 char *chp = const_cast<char *> (path); 950 951 /* skip initial slash */ 952 if (chp[0] == '/') 953 chp++; 954 955 /* create leading directories, if necessary */ 956 struct stat dir_stat; 957 while (chp && chp[0]) { 958 chp = strchr(chp, '/'); 959 if (chp) { 960 *chp = 0; 961 if (stat(path, &dir_stat) == -1 || !S_ISDIR(dir_stat.st_mode)) { 962 MYLOGI("Creating directory %s\n", path); 963 if (mkdir(path, 0770)) { /* drwxrwx--- */ 964 MYLOGE("Unable to create directory %s: %s\n", path, strerror(errno)); 965 } else if (chown(path, AID_SHELL, AID_SHELL)) { 966 MYLOGE("Unable to change ownership of dir %s: %s\n", path, strerror(errno)); 967 } 968 } 969 *chp++ = '/'; 970 } 971 } 972 } 973 974 /* redirect output to a file */ 975 void redirect_to_file(FILE *redirect, char *path) { 976 create_parent_dirs(path); 977 978 int fd = TEMP_FAILURE_RETRY(open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_NOFOLLOW, 979 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); 980 if (fd < 0) { 981 MYLOGE("%s: %s\n", path, strerror(errno)); 982 exit(1); 983 } 984 985 TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); 986 close(fd); 987 } 988 989 static bool should_dump_native_traces(const char* path) { 990 for (const char** p = native_processes_to_dump; *p; p++) { 991 if (!strcmp(*p, path)) { 992 return true; 993 } 994 } 995 return false; 996 } 997 998 /* dump Dalvik and native stack traces, return the trace file location (NULL if none) */ 999 const char *dump_traces() { 1000 DurationReporter duration_reporter("DUMP TRACES", NULL); 1001 ON_DRY_RUN_RETURN(NULL); 1002 const char* result = NULL; 1003 1004 char traces_path[PROPERTY_VALUE_MAX] = ""; 1005 property_get("dalvik.vm.stack-trace-file", traces_path, ""); 1006 if (!traces_path[0]) return NULL; 1007 1008 /* move the old traces.txt (if any) out of the way temporarily */ 1009 char anr_traces_path[PATH_MAX]; 1010 strlcpy(anr_traces_path, traces_path, sizeof(anr_traces_path)); 1011 strlcat(anr_traces_path, ".anr", sizeof(anr_traces_path)); 1012 if (rename(traces_path, anr_traces_path) && errno != ENOENT) { 1013 MYLOGE("rename(%s, %s): %s\n", traces_path, anr_traces_path, strerror(errno)); 1014 return NULL; // Can't rename old traces.txt -- no permission? -- leave it alone instead 1015 } 1016 1017 /* create a new, empty traces.txt file to receive stack dumps */ 1018 int fd = TEMP_FAILURE_RETRY(open(traces_path, O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 1019 0666)); /* -rw-rw-rw- */ 1020 if (fd < 0) { 1021 MYLOGE("%s: %s\n", traces_path, strerror(errno)); 1022 return NULL; 1023 } 1024 int chmod_ret = fchmod(fd, 0666); 1025 if (chmod_ret < 0) { 1026 MYLOGE("fchmod on %s failed: %s\n", traces_path, strerror(errno)); 1027 close(fd); 1028 return NULL; 1029 } 1030 1031 /* Variables below must be initialized before 'goto' statements */ 1032 int dalvik_found = 0; 1033 int ifd, wfd = -1; 1034 1035 /* walk /proc and kill -QUIT all Dalvik processes */ 1036 DIR *proc = opendir("/proc"); 1037 if (proc == NULL) { 1038 MYLOGE("/proc: %s\n", strerror(errno)); 1039 goto error_close_fd; 1040 } 1041 1042 /* use inotify to find when processes are done dumping */ 1043 ifd = inotify_init(); 1044 if (ifd < 0) { 1045 MYLOGE("inotify_init: %s\n", strerror(errno)); 1046 goto error_close_fd; 1047 } 1048 1049 wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE); 1050 if (wfd < 0) { 1051 MYLOGE("inotify_add_watch(%s): %s\n", traces_path, strerror(errno)); 1052 goto error_close_ifd; 1053 } 1054 1055 struct dirent *d; 1056 while ((d = readdir(proc))) { 1057 int pid = atoi(d->d_name); 1058 if (pid <= 0) continue; 1059 1060 char path[PATH_MAX]; 1061 char data[PATH_MAX]; 1062 snprintf(path, sizeof(path), "/proc/%d/exe", pid); 1063 ssize_t len = readlink(path, data, sizeof(data) - 1); 1064 if (len <= 0) { 1065 continue; 1066 } 1067 data[len] = '\0'; 1068 1069 if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) { 1070 /* skip zygote -- it won't dump its stack anyway */ 1071 snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); 1072 int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC)); 1073 len = read(cfd, data, sizeof(data) - 1); 1074 close(cfd); 1075 if (len <= 0) { 1076 continue; 1077 } 1078 data[len] = '\0'; 1079 if (!strncmp(data, "zygote", strlen("zygote"))) { 1080 continue; 1081 } 1082 1083 ++dalvik_found; 1084 uint64_t start = DurationReporter::nanotime(); 1085 if (kill(pid, SIGQUIT)) { 1086 MYLOGE("kill(%d, SIGQUIT): %s\n", pid, strerror(errno)); 1087 continue; 1088 } 1089 1090 /* wait for the writable-close notification from inotify */ 1091 struct pollfd pfd = { ifd, POLLIN, 0 }; 1092 int ret = poll(&pfd, 1, 5000); /* 5 sec timeout */ 1093 if (ret < 0) { 1094 MYLOGE("poll: %s\n", strerror(errno)); 1095 } else if (ret == 0) { 1096 MYLOGE("warning: timed out dumping pid %d\n", pid); 1097 } else { 1098 struct inotify_event ie; 1099 read(ifd, &ie, sizeof(ie)); 1100 } 1101 1102 if (lseek(fd, 0, SEEK_END) < 0) { 1103 MYLOGE("lseek: %s\n", strerror(errno)); 1104 } else { 1105 dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n", 1106 pid, (float)(DurationReporter::nanotime() - start) / NANOS_PER_SEC); 1107 } 1108 } else if (should_dump_native_traces(data)) { 1109 /* dump native process if appropriate */ 1110 if (lseek(fd, 0, SEEK_END) < 0) { 1111 MYLOGE("lseek: %s\n", strerror(errno)); 1112 } else { 1113 static uint16_t timeout_failures = 0; 1114 uint64_t start = DurationReporter::nanotime(); 1115 1116 /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */ 1117 if (timeout_failures == 3) { 1118 dprintf(fd, "too many stack dump failures, skipping...\n"); 1119 } else if (dump_backtrace_to_file_timeout(pid, fd, 20) == -1) { 1120 dprintf(fd, "dumping failed, likely due to a timeout\n"); 1121 timeout_failures++; 1122 } else { 1123 timeout_failures = 0; 1124 } 1125 dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n", 1126 pid, (float)(DurationReporter::nanotime() - start) / NANOS_PER_SEC); 1127 } 1128 } 1129 } 1130 1131 if (dalvik_found == 0) { 1132 MYLOGE("Warning: no Dalvik processes found to dump stacks\n"); 1133 } 1134 1135 static char dump_traces_path[PATH_MAX]; 1136 strlcpy(dump_traces_path, traces_path, sizeof(dump_traces_path)); 1137 strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path)); 1138 if (rename(traces_path, dump_traces_path)) { 1139 MYLOGE("rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno)); 1140 goto error_close_ifd; 1141 } 1142 result = dump_traces_path; 1143 1144 /* replace the saved [ANR] traces.txt file */ 1145 rename(anr_traces_path, traces_path); 1146 1147 error_close_ifd: 1148 close(ifd); 1149 error_close_fd: 1150 close(fd); 1151 return result; 1152 } 1153 1154 void dump_route_tables() { 1155 DurationReporter duration_reporter("DUMP ROUTE TABLES"); 1156 ON_DRY_RUN_RETURN(); 1157 const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; 1158 dump_file("RT_TABLES", RT_TABLES_PATH); 1159 FILE* fp = fopen(RT_TABLES_PATH, "re"); 1160 if (!fp) { 1161 printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); 1162 return; 1163 } 1164 char table[16]; 1165 // Each line has an integer (the table number), a space, and a string (the table name). We only 1166 // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. 1167 // Add a fixed max limit so this doesn't go awry. 1168 for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { 1169 run_command("ROUTE TABLE IPv4", 10, "ip", "-4", "route", "show", "table", table, NULL); 1170 run_command("ROUTE TABLE IPv6", 10, "ip", "-6", "route", "show", "table", table, NULL); 1171 } 1172 fclose(fp); 1173 } 1174 1175 /* overall progress */ 1176 int progress = 0; 1177 int do_update_progress = 0; // Set by dumpstate.cpp 1178 int weight_total = WEIGHT_TOTAL; 1179 1180 // TODO: make this function thread safe if sections are generated in parallel. 1181 void update_progress(int delta) { 1182 if (!do_update_progress) return; 1183 1184 progress += delta; 1185 1186 char key[PROPERTY_KEY_MAX]; 1187 char value[PROPERTY_VALUE_MAX]; 1188 1189 // adjusts max on the fly 1190 if (progress > weight_total) { 1191 int new_total = weight_total * 1.2; 1192 MYLOGD("Adjusting total weight from %d to %d\n", weight_total, new_total); 1193 weight_total = new_total; 1194 snprintf(key, sizeof(key), "dumpstate.%d.max", getpid()); 1195 snprintf(value, sizeof(value), "%d", weight_total); 1196 int status = property_set(key, value); 1197 if (status) { 1198 MYLOGE("Could not update max weight by setting system property %s to %s: %d\n", 1199 key, value, status); 1200 } 1201 } 1202 1203 snprintf(key, sizeof(key), "dumpstate.%d.progress", getpid()); 1204 snprintf(value, sizeof(value), "%d", progress); 1205 1206 if (progress % 100 == 0) { 1207 // We don't want to spam logcat, so only log multiples of 100. 1208 MYLOGD("Setting progress (%s): %s/%d\n", key, value, weight_total); 1209 } else { 1210 // stderr is ignored on normal invocations, but useful when calling /system/bin/dumpstate 1211 // directly for debuggging. 1212 fprintf(stderr, "Setting progress (%s): %s/%d\n", key, value, weight_total); 1213 } 1214 1215 int status = property_set(key, value); 1216 if (status) { 1217 MYLOGE("Could not update progress by setting system property %s to %s: %d\n", 1218 key, value, status); 1219 } 1220 } 1221 1222 void take_screenshot(const std::string& path) { 1223 const char *args[] = { "/system/bin/screencap", "-p", path.c_str(), NULL }; 1224 run_command_always(NULL, DONT_DROP_ROOT, REDIRECT_TO_STDERR, 10, args); 1225 } 1226 1227 void vibrate(FILE* vibrator, int ms) { 1228 fprintf(vibrator, "%d\n", ms); 1229 fflush(vibrator); 1230 } 1231 1232 bool is_dir(const char* pathname) { 1233 struct stat info; 1234 if (stat(pathname, &info) == -1) { 1235 return false; 1236 } 1237 return S_ISDIR(info.st_mode); 1238 } 1239 1240 time_t get_mtime(int fd, time_t default_mtime) { 1241 struct stat info; 1242 if (fstat(fd, &info) == -1) { 1243 return default_mtime; 1244 } 1245 return info.st_mtime; 1246 } 1247 1248 void dump_emmc_ecsd(const char *ext_csd_path) { 1249 static const size_t EXT_CSD_REV = 192; 1250 static const size_t EXT_PRE_EOL_INFO = 267; 1251 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_A = 268; 1252 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_B = 269; 1253 struct hex { 1254 char str[2]; 1255 } buffer[512]; 1256 int fd, ext_csd_rev, ext_pre_eol_info; 1257 ssize_t bytes_read; 1258 static const char *ver_str[] = { 1259 "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0" 1260 }; 1261 static const char *eol_str[] = { 1262 "Undefined", 1263 "Normal", 1264 "Warning (consumed 80% of reserve)", 1265 "Urgent (consumed 90% of reserve)" 1266 }; 1267 1268 printf("------ %s Extended CSD ------\n", ext_csd_path); 1269 1270 fd = TEMP_FAILURE_RETRY(open(ext_csd_path, 1271 O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 1272 if (fd < 0) { 1273 printf("*** %s: %s\n\n", ext_csd_path, strerror(errno)); 1274 return; 1275 } 1276 1277 bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 1278 close(fd); 1279 if (bytes_read < 0) { 1280 printf("*** %s: %s\n\n", ext_csd_path, strerror(errno)); 1281 return; 1282 } 1283 if (bytes_read < (ssize_t)(EXT_CSD_REV * sizeof(struct hex))) { 1284 printf("*** %s: truncated content %zd\n\n", ext_csd_path, bytes_read); 1285 return; 1286 } 1287 1288 ext_csd_rev = 0; 1289 if (sscanf(buffer[EXT_CSD_REV].str, "%02x", &ext_csd_rev) != 1) { 1290 printf("*** %s: EXT_CSD_REV parse error \"%.2s\"\n\n", 1291 ext_csd_path, buffer[EXT_CSD_REV].str); 1292 return; 1293 } 1294 1295 printf("rev 1.%d (MMC %s)\n", 1296 ext_csd_rev, 1297 (ext_csd_rev < (int)(sizeof(ver_str) / sizeof(ver_str[0]))) ? 1298 ver_str[ext_csd_rev] : 1299 "Unknown"); 1300 if (ext_csd_rev < 7) { 1301 printf("\n"); 1302 return; 1303 } 1304 1305 if (bytes_read < (ssize_t)(EXT_PRE_EOL_INFO * sizeof(struct hex))) { 1306 printf("*** %s: truncated content %zd\n\n", ext_csd_path, bytes_read); 1307 return; 1308 } 1309 1310 ext_pre_eol_info = 0; 1311 if (sscanf(buffer[EXT_PRE_EOL_INFO].str, "%02x", &ext_pre_eol_info) != 1) { 1312 printf("*** %s: PRE_EOL_INFO parse error \"%.2s\"\n\n", 1313 ext_csd_path, buffer[EXT_PRE_EOL_INFO].str); 1314 return; 1315 } 1316 printf("PRE_EOL_INFO %d (MMC %s)\n", 1317 ext_pre_eol_info, 1318 eol_str[(ext_pre_eol_info < (int) 1319 (sizeof(eol_str) / sizeof(eol_str[0]))) ? 1320 ext_pre_eol_info : 0]); 1321 1322 for (size_t lifetime = EXT_DEVICE_LIFE_TIME_EST_TYP_A; 1323 lifetime <= EXT_DEVICE_LIFE_TIME_EST_TYP_B; 1324 ++lifetime) { 1325 int ext_device_life_time_est; 1326 static const char *est_str[] = { 1327 "Undefined", 1328 "0-10% of device lifetime used", 1329 "10-20% of device lifetime used", 1330 "20-30% of device lifetime used", 1331 "30-40% of device lifetime used", 1332 "40-50% of device lifetime used", 1333 "50-60% of device lifetime used", 1334 "60-70% of device lifetime used", 1335 "70-80% of device lifetime used", 1336 "80-90% of device lifetime used", 1337 "90-100% of device lifetime used", 1338 "Exceeded the maximum estimated device lifetime", 1339 }; 1340 1341 if (bytes_read < (ssize_t)(lifetime * sizeof(struct hex))) { 1342 printf("*** %s: truncated content %zd\n", ext_csd_path, bytes_read); 1343 break; 1344 } 1345 1346 ext_device_life_time_est = 0; 1347 if (sscanf(buffer[lifetime].str, "%02x", &ext_device_life_time_est) != 1) { 1348 printf("*** %s: DEVICE_LIFE_TIME_EST_TYP_%c parse error \"%.2s\"\n", 1349 ext_csd_path, 1350 (unsigned)(lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) + 'A', 1351 buffer[lifetime].str); 1352 continue; 1353 } 1354 printf("DEVICE_LIFE_TIME_EST_TYP_%c %d (MMC %s)\n", 1355 (unsigned)(lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) + 'A', 1356 ext_device_life_time_est, 1357 est_str[(ext_device_life_time_est < (int) 1358 (sizeof(est_str) / sizeof(est_str[0]))) ? 1359 ext_device_life_time_est : 0]); 1360 } 1361 1362 printf("\n"); 1363 } 1364 1365 // TODO: refactor all those commands that convert args 1366 void format_args(int argc, const char *argv[], std::string *args) { 1367 LOG_ALWAYS_FATAL_IF(args == nullptr); 1368 for (int i = 0; i < argc; i++) { 1369 args->append(argv[i]); 1370 if (i < argc -1) { 1371 args->append(" "); 1372 } 1373 } 1374 } 1375 void format_args(const char* command, const char *args[], std::string *string) { 1376 LOG_ALWAYS_FATAL_IF(args == nullptr || command == nullptr); 1377 string->append(command); 1378 if (args[0] == nullptr) return; 1379 string->append(" "); 1380 1381 for (int arg = 1; arg <= 1000; ++arg) { 1382 if (args[arg] == nullptr) return; 1383 string->append(args[arg]); 1384 if (args[arg+1] != nullptr) { 1385 string->append(" "); 1386 } 1387 } 1388 // TODO: not really working: if NULL is missing, it will crash dumpstate. 1389 MYLOGE("internal error: missing NULL entry on %s", string->c_str()); 1390 } 1391
