utils.cpp revision cf6a8b47dc04f1c33ddc337b5e21f2c5b7354cb5
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 51static const int64_t NANOS_PER_SEC = 1000000000; 52 53/* list of native processes to include in the native dumps */ 54static const char* native_processes_to_dump[] = { 55 "/system/bin/audioserver", 56 "/system/bin/cameraserver", 57 "/system/bin/drmserver", 58 "/system/bin/mediaserver", 59 "/system/bin/sdcard", 60 "/system/bin/surfaceflinger", 61 "/system/bin/vehicle_network_service", 62 NULL, 63}; 64 65DurationReporter::DurationReporter(const char *title) : DurationReporter(title, stdout) {} 66 67DurationReporter::DurationReporter(const char *title, FILE *out) { 68 title_ = title; 69 if (title) { 70 started_ = DurationReporter::nanotime(); 71 } 72 out_ = out; 73} 74 75DurationReporter::~DurationReporter() { 76 if (title_) { 77 uint64_t elapsed = DurationReporter::nanotime() - started_; 78 // Use "Yoda grammar" to make it easier to grep|sort sections. 79 if (out_) { 80 fprintf(out_, "------ %.3fs was the duration of '%s' ------\n", 81 (float) elapsed / NANOS_PER_SEC, title_); 82 } else { 83 MYLOGD("Duration of '%s': %.3fs\n", title_, (float) elapsed / NANOS_PER_SEC); 84 } 85 } 86} 87 88uint64_t DurationReporter::DurationReporter::nanotime() { 89 struct timespec ts; 90 clock_gettime(CLOCK_MONOTONIC, &ts); 91 return (uint64_t) ts.tv_sec * NANOS_PER_SEC + ts.tv_nsec; 92} 93 94void for_each_userid(void (*func)(int), const char *header) { 95 ON_DRY_RUN_RETURN(); 96 DIR *d; 97 struct dirent *de; 98 99 if (header) printf("\n------ %s ------\n", header); 100 func(0); 101 102 if (!(d = opendir("/data/system/users"))) { 103 printf("Failed to open /data/system/users (%s)\n", strerror(errno)); 104 return; 105 } 106 107 while ((de = readdir(d))) { 108 int userid; 109 if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { 110 continue; 111 } 112 func(userid); 113 } 114 115 closedir(d); 116} 117 118static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { 119 DIR *d; 120 struct dirent *de; 121 122 if (!(d = opendir("/proc"))) { 123 printf("Failed to open /proc (%s)\n", strerror(errno)); 124 return; 125 } 126 127 if (header) printf("\n------ %s ------\n", header); 128 while ((de = readdir(d))) { 129 int pid; 130 int fd; 131 char cmdpath[255]; 132 char cmdline[255]; 133 134 if (!(pid = atoi(de->d_name))) { 135 continue; 136 } 137 138 memset(cmdline, 0, sizeof(cmdline)); 139 140 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/cmdline", pid); 141 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 142 TEMP_FAILURE_RETRY(read(fd, cmdline, sizeof(cmdline) - 2)); 143 close(fd); 144 if (cmdline[0]) { 145 helper(pid, cmdline, arg); 146 continue; 147 } 148 } 149 150 // if no cmdline, a kernel thread has comm 151 snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/comm", pid); 152 if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { 153 TEMP_FAILURE_RETRY(read(fd, cmdline + 1, sizeof(cmdline) - 4)); 154 close(fd); 155 if (cmdline[1]) { 156 cmdline[0] = '['; 157 size_t len = strcspn(cmdline, "\f\b\r\n"); 158 cmdline[len] = ']'; 159 cmdline[len+1] = '\0'; 160 } 161 } 162 if (!cmdline[0]) { 163 strcpy(cmdline, "N/A"); 164 } 165 helper(pid, cmdline, arg); 166 } 167 168 closedir(d); 169} 170 171static void for_each_pid_helper(int pid, const char *cmdline, void *arg) { 172 for_each_pid_func *func = (for_each_pid_func*) arg; 173 func(pid, cmdline); 174} 175 176void for_each_pid(for_each_pid_func func, const char *header) { 177 ON_DRY_RUN_RETURN(); 178 __for_each_pid(for_each_pid_helper, header, (void *)func); 179} 180 181static void for_each_tid_helper(int pid, const char *cmdline, void *arg) { 182 DIR *d; 183 struct dirent *de; 184 char taskpath[255]; 185 for_each_tid_func *func = (for_each_tid_func *) arg; 186 187 sprintf(taskpath, "/proc/%d/task", pid); 188 189 if (!(d = opendir(taskpath))) { 190 printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); 191 return; 192 } 193 194 func(pid, pid, cmdline); 195 196 while ((de = readdir(d))) { 197 int tid; 198 int fd; 199 char commpath[255]; 200 char comm[255]; 201 202 if (!(tid = atoi(de->d_name))) { 203 continue; 204 } 205 206 if (tid == pid) 207 continue; 208 209 sprintf(commpath,"/proc/%d/comm", tid); 210 memset(comm, 0, sizeof(comm)); 211 if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { 212 strcpy(comm, "N/A"); 213 } else { 214 char *c; 215 TEMP_FAILURE_RETRY(read(fd, comm, sizeof(comm) - 2)); 216 close(fd); 217 218 c = strrchr(comm, '\n'); 219 if (c) { 220 *c = '\0'; 221 } 222 } 223 func(pid, tid, comm); 224 } 225 226 closedir(d); 227} 228 229void for_each_tid(for_each_tid_func func, const char *header) { 230 ON_DRY_RUN_RETURN(); 231 __for_each_pid(for_each_tid_helper, header, (void *) func); 232} 233 234void show_wchan(int pid, int tid, const char *name) { 235 ON_DRY_RUN_RETURN(); 236 char path[255]; 237 char buffer[255]; 238 int fd, ret, save_errno; 239 char name_buffer[255]; 240 241 memset(buffer, 0, sizeof(buffer)); 242 243 sprintf(path, "/proc/%d/wchan", tid); 244 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 245 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 246 return; 247 } 248 249 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 250 save_errno = errno; 251 close(fd); 252 253 if (ret < 0) { 254 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 255 return; 256 } 257 258 snprintf(name_buffer, sizeof(name_buffer), "%*s%s", 259 pid == tid ? 0 : 3, "", name); 260 261 printf("%-7d %-32s %s\n", tid, name_buffer, buffer); 262 263 return; 264} 265 266// print time in centiseconds 267static void snprcent(char *buffer, size_t len, size_t spc, 268 unsigned long long time) { 269 static long hz; // cache discovered hz 270 271 if (hz <= 0) { 272 hz = sysconf(_SC_CLK_TCK); 273 if (hz <= 0) { 274 hz = 1000; 275 } 276 } 277 278 // convert to centiseconds 279 time = (time * 100 + (hz / 2)) / hz; 280 281 char str[16]; 282 283 snprintf(str, sizeof(str), " %llu.%02u", 284 time / 100, (unsigned)(time % 100)); 285 size_t offset = strlen(buffer); 286 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 287 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 288} 289 290// print permille as a percent 291static void snprdec(char *buffer, size_t len, size_t spc, unsigned permille) { 292 char str[16]; 293 294 snprintf(str, sizeof(str), " %u.%u%%", permille / 10, permille % 10); 295 size_t offset = strlen(buffer); 296 snprintf(buffer + offset, (len > offset) ? len - offset : 0, 297 "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); 298} 299 300void show_showtime(int pid, const char *name) { 301 ON_DRY_RUN_RETURN(); 302 char path[255]; 303 char buffer[1023]; 304 int fd, ret, save_errno; 305 306 memset(buffer, 0, sizeof(buffer)); 307 308 sprintf(path, "/proc/%d/stat", pid); 309 if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 310 printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 311 return; 312 } 313 314 ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 315 save_errno = errno; 316 close(fd); 317 318 if (ret < 0) { 319 printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); 320 return; 321 } 322 323 // field 14 is utime 324 // field 15 is stime 325 // field 42 is iotime 326 unsigned long long utime = 0, stime = 0, iotime = 0; 327 if (sscanf(buffer, 328 "%*u %*s %*s %*d %*d %*d %*d %*d %*d %*d %*d " 329 "%*d %*d %llu %llu %*d %*d %*d %*d %*d %*d " 330 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " 331 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %llu ", 332 &utime, &stime, &iotime) != 3) { 333 return; 334 } 335 336 unsigned long long total = utime + stime; 337 if (!total) { 338 return; 339 } 340 341 unsigned permille = (iotime * 1000 + (total / 2)) / total; 342 if (permille > 1000) { 343 permille = 1000; 344 } 345 346 // try to beautify and stabilize columns at <80 characters 347 snprintf(buffer, sizeof(buffer), "%-6d%s", pid, name); 348 if ((name[0] != '[') || utime) { 349 snprcent(buffer, sizeof(buffer), 57, utime); 350 } 351 snprcent(buffer, sizeof(buffer), 65, stime); 352 if ((name[0] != '[') || iotime) { 353 snprcent(buffer, sizeof(buffer), 73, iotime); 354 } 355 if (iotime) { 356 snprdec(buffer, sizeof(buffer), 79, permille); 357 } 358 puts(buffer); // adds a trailing newline 359 360 return; 361} 362 363void do_dmesg() { 364 const char *title = "KERNEL LOG (dmesg)"; 365 DurationReporter duration_reporter(title); 366 printf("------ %s ------\n", title); 367 368 ON_DRY_RUN_RETURN(); 369 /* Get size of kernel buffer */ 370 int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); 371 if (size <= 0) { 372 printf("Unexpected klogctl return value: %d\n\n", size); 373 return; 374 } 375 char *buf = (char *) malloc(size + 1); 376 if (buf == NULL) { 377 printf("memory allocation failed\n\n"); 378 return; 379 } 380 int retval = klogctl(KLOG_READ_ALL, buf, size); 381 if (retval < 0) { 382 printf("klogctl failure\n\n"); 383 free(buf); 384 return; 385 } 386 buf[retval] = '\0'; 387 printf("%s\n\n", buf); 388 free(buf); 389 return; 390} 391 392void do_showmap(int pid, const char *name) { 393 char title[255]; 394 char arg[255]; 395 396 sprintf(title, "SHOW MAP %d (%s)", pid, name); 397 sprintf(arg, "%d", pid); 398 run_command(title, 10, SU_PATH, "root", "showmap", arg, NULL); 399} 400 401static int _dump_file_from_fd(const char *title, const char *path, int fd) { 402 if (title) { 403 printf("------ %s (%s", title, path); 404 405 struct stat st; 406 // Only show the modification time of non-device files. 407 size_t path_len = strlen(path); 408 if ((path_len < 6 || memcmp(path, "/proc/", 6)) && 409 (path_len < 5 || memcmp(path, "/sys/", 5)) && 410 (path_len < 3 || memcmp(path, "/d/", 3)) && 411 !fstat(fd, &st)) { 412 char stamp[80]; 413 time_t mtime = st.st_mtime; 414 strftime(stamp, sizeof(stamp), "%Y-%m-%d %H:%M:%S", localtime(&mtime)); 415 printf(": %s", stamp); 416 } 417 printf(") ------\n"); 418 } 419 ON_DRY_RUN({ update_progress(WEIGHT_FILE); close(fd); return 0; }); 420 421 bool newline = false; 422 fd_set read_set; 423 struct timeval tm; 424 while (1) { 425 FD_ZERO(&read_set); 426 FD_SET(fd, &read_set); 427 /* Timeout if no data is read for 30 seconds. */ 428 tm.tv_sec = 30; 429 tm.tv_usec = 0; 430 uint64_t elapsed = DurationReporter::nanotime(); 431 int ret = TEMP_FAILURE_RETRY(select(fd + 1, &read_set, NULL, NULL, &tm)); 432 if (ret == -1) { 433 printf("*** %s: select failed: %s\n", path, strerror(errno)); 434 newline = true; 435 break; 436 } else if (ret == 0) { 437 elapsed = DurationReporter::nanotime() - elapsed; 438 printf("*** %s: Timed out after %.3fs\n", path, 439 (float) elapsed / NANOS_PER_SEC); 440 newline = true; 441 break; 442 } else { 443 char buffer[65536]; 444 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 445 if (bytes_read > 0) { 446 fwrite(buffer, bytes_read, 1, stdout); 447 newline = (buffer[bytes_read-1] == '\n'); 448 } else { 449 if (bytes_read == -1) { 450 printf("*** %s: Failed to read from fd: %s", path, strerror(errno)); 451 newline = true; 452 } 453 break; 454 } 455 } 456 } 457 update_progress(WEIGHT_FILE); 458 close(fd); 459 460 if (!newline) printf("\n"); 461 if (title) printf("\n"); 462 return 0; 463} 464 465/* prints the contents of a file */ 466int dump_file(const char *title, const char *path) { 467 DurationReporter duration_reporter(title); 468 int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 469 if (fd < 0) { 470 int err = errno; 471 printf("*** %s: %s\n", path, strerror(err)); 472 if (title) printf("\n"); 473 return -1; 474 } 475 return _dump_file_from_fd(title, path, fd); 476} 477 478/* calls skip to gate calling dump_from_fd recursively 479 * in the specified directory. dump_from_fd defaults to 480 * dump_file_from_fd above when set to NULL. skip defaults 481 * to false when set to NULL. dump_from_fd will always be 482 * called with title NULL. 483 */ 484int dump_files(const char *title, const char *dir, 485 bool (*skip)(const char *path), 486 int (*dump_from_fd)(const char *title, const char *path, int fd)) { 487 DurationReporter duration_reporter(title); 488 DIR *dirp; 489 struct dirent *d; 490 char *newpath = NULL; 491 const char *slash = "/"; 492 int fd, retval = 0; 493 494 if (title) { 495 printf("------ %s (%s) ------\n", title, dir); 496 } 497 ON_DRY_RUN_RETURN(0); 498 499 if (dir[strlen(dir) - 1] == '/') { 500 ++slash; 501 } 502 dirp = opendir(dir); 503 if (dirp == NULL) { 504 retval = -errno; 505 MYLOGE("%s: %s\n", dir, strerror(errno)); 506 return retval; 507 } 508 509 if (!dump_from_fd) { 510 dump_from_fd = dump_file_from_fd; 511 } 512 for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { 513 if ((d->d_name[0] == '.') 514 && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) 515 || (d->d_name[1] == '\0'))) { 516 continue; 517 } 518 asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, 519 (d->d_type == DT_DIR) ? "/" : ""); 520 if (!newpath) { 521 retval = -errno; 522 continue; 523 } 524 if (skip && (*skip)(newpath)) { 525 continue; 526 } 527 if (d->d_type == DT_DIR) { 528 int ret = dump_files(NULL, newpath, skip, dump_from_fd); 529 if (ret < 0) { 530 retval = ret; 531 } 532 continue; 533 } 534 fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 535 if (fd < 0) { 536 retval = fd; 537 printf("*** %s: %s\n", newpath, strerror(errno)); 538 continue; 539 } 540 (*dump_from_fd)(NULL, newpath, fd); 541 } 542 closedir(dirp); 543 if (title) { 544 printf("\n"); 545 } 546 return retval; 547} 548 549/* fd must have been opened with the flag O_NONBLOCK. With this flag set, 550 * it's possible to avoid issues where opening the file itself can get 551 * stuck. 552 */ 553int dump_file_from_fd(const char *title, const char *path, int fd) { 554 int flags = fcntl(fd, F_GETFL); 555 if (flags == -1) { 556 printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); 557 close(fd); 558 return -1; 559 } else if (!(flags & O_NONBLOCK)) { 560 printf("*** %s: fd must have O_NONBLOCK set.\n", path); 561 close(fd); 562 return -1; 563 } 564 return _dump_file_from_fd(title, path, fd); 565} 566 567bool waitpid_with_timeout(pid_t pid, int timeout_seconds, int* status) { 568 sigset_t child_mask, old_mask; 569 sigemptyset(&child_mask); 570 sigaddset(&child_mask, SIGCHLD); 571 572 if (sigprocmask(SIG_BLOCK, &child_mask, &old_mask) == -1) { 573 printf("*** sigprocmask failed: %s\n", strerror(errno)); 574 return false; 575 } 576 577 struct timespec ts; 578 ts.tv_sec = timeout_seconds; 579 ts.tv_nsec = 0; 580 int ret = TEMP_FAILURE_RETRY(sigtimedwait(&child_mask, NULL, &ts)); 581 int saved_errno = errno; 582 // Set the signals back the way they were. 583 if (sigprocmask(SIG_SETMASK, &old_mask, NULL) == -1) { 584 printf("*** sigprocmask failed: %s\n", strerror(errno)); 585 if (ret == 0) { 586 return false; 587 } 588 } 589 if (ret == -1) { 590 errno = saved_errno; 591 if (errno == EAGAIN) { 592 errno = ETIMEDOUT; 593 } else { 594 printf("*** sigtimedwait failed: %s\n", strerror(errno)); 595 } 596 return false; 597 } 598 599 pid_t child_pid = waitpid(pid, status, WNOHANG); 600 if (child_pid != pid) { 601 if (child_pid != -1) { 602 printf("*** Waiting for pid %d, got pid %d instead\n", pid, child_pid); 603 } else { 604 printf("*** waitpid failed: %s\n", strerror(errno)); 605 } 606 return false; 607 } 608 return true; 609} 610 611// TODO: refactor all those commands that convert args 612void format_args(const char* command, const char *args[], std::string *string); 613 614int run_command(const char *title, int timeout_seconds, const char *command, ...) { 615 DurationReporter duration_reporter(title); 616 fflush(stdout); 617 618 const char *args[1024] = {command}; 619 size_t arg; 620 va_list ap; 621 va_start(ap, command); 622 if (title) printf("------ %s (%s", title, command); 623 bool null_terminated = false; 624 for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) { 625 args[arg] = va_arg(ap, const char *); 626 if (args[arg] == nullptr) { 627 null_terminated = true; 628 break; 629 } 630 if (title) printf(" %s", args[arg]); 631 } 632 if (title) printf(") ------\n"); 633 fflush(stdout); 634 if (!null_terminated) { 635 // Fail now, otherwise execvp() call on run_command_always() might hang. 636 std::string cmd; 637 format_args(command, args, &cmd); 638 MYLOGE("skipping command %s because its args were not NULL-terminated", cmd.c_str()); 639 return -1; 640 } 641 642 ON_DRY_RUN({ update_progress(timeout_seconds); va_end(ap); return 0; }); 643 644 int status = run_command_always(title, false, timeout_seconds, args); 645 va_end(ap); 646 return status; 647} 648 649int run_command_as_shell(const char *title, int timeout_seconds, const char *command, ...) { 650 DurationReporter duration_reporter(title); 651 fflush(stdout); 652 653 const char *args[1024] = {command}; 654 size_t arg; 655 va_list ap; 656 va_start(ap, command); 657 if (title) printf("------ %s (%s", title, command); 658 bool null_terminated = false; 659 for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) { 660 args[arg] = va_arg(ap, const char *); 661 if (args[arg] == nullptr) { 662 null_terminated = true; 663 break; 664 } 665 if (title) printf(" %s", args[arg]); 666 } 667 if (title) printf(") ------\n"); 668 fflush(stdout); 669 if (!null_terminated) { 670 // Fail now, otherwise execvp() call on run_command_always() might hang. 671 std::string cmd; 672 format_args(command, args, &cmd); 673 MYLOGE("skipping command %s because its args were not NULL-terminated", cmd.c_str()); 674 return -1; 675 } 676 677 ON_DRY_RUN({ update_progress(timeout_seconds); va_end(ap); return 0; }); 678 679 int status = run_command_always(title, true, timeout_seconds, args); 680 va_end(ap); 681 return status; 682} 683 684/* forks a command and waits for it to finish */ 685int run_command_always(const char *title, bool drop_root, int timeout_seconds, const char *args[]) { 686 /* TODO: for now we're simplifying the progress calculation by using the timeout as the weight. 687 * It's a good approximation for most cases, except when calling dumpsys, where its weight 688 * should be much higher proportionally to its timeout. */ 689 int weight = timeout_seconds; 690 691 const char *command = args[0]; 692 uint64_t start = DurationReporter::nanotime(); 693 pid_t pid = fork(); 694 695 /* handle error case */ 696 if (pid < 0) { 697 printf("*** fork: %s\n", strerror(errno)); 698 return pid; 699 } 700 701 /* handle child case */ 702 if (pid == 0) { 703 if (drop_root && !drop_root_user()) { 704 printf("*** could not drop root before running %s: %s\n", command, strerror(errno)); 705 _exit(-1); 706 } 707 708 /* make sure the child dies when dumpstate dies */ 709 prctl(PR_SET_PDEATHSIG, SIGKILL); 710 711 /* just ignore SIGPIPE, will go down with parent's */ 712 struct sigaction sigact; 713 memset(&sigact, 0, sizeof(sigact)); 714 sigact.sa_handler = SIG_IGN; 715 sigaction(SIGPIPE, &sigact, NULL); 716 717 execvp(command, (char**) args); 718 // execvp's result will be handled after waitpid_with_timeout() below... 719 _exit(-1); // ...but it doesn't hurt to force exit, just in case 720 } 721 722 /* handle parent case */ 723 int status; 724 bool ret = waitpid_with_timeout(pid, timeout_seconds, &status); 725 uint64_t elapsed = DurationReporter::nanotime() - start; 726 std::string cmd; // used to log command and its args 727 if (!ret) { 728 if (errno == ETIMEDOUT) { 729 format_args(command, args, &cmd); 730 printf("*** command '%s' timed out after %.3fs (killing pid %d)\n", cmd.c_str(), 731 (float) elapsed / NANOS_PER_SEC, pid); 732 MYLOGE("command '%s' timed out after %.3fs (killing pid %d)\n", cmd.c_str(), 733 (float) elapsed / NANOS_PER_SEC, pid); 734 } else { 735 format_args(command, args, &cmd); 736 printf("*** command '%s': Error after %.4fs (killing pid %d)\n", cmd.c_str(), 737 (float) elapsed / NANOS_PER_SEC, pid); 738 MYLOGE("command '%s': Error after %.4fs (killing pid %d)\n", cmd.c_str(), 739 (float) elapsed / NANOS_PER_SEC, pid); 740 } 741 kill(pid, SIGTERM); 742 if (!waitpid_with_timeout(pid, 5, NULL)) { 743 kill(pid, SIGKILL); 744 if (!waitpid_with_timeout(pid, 5, NULL)) { 745 printf("couldn not kill command '%s' (pid %d) even with SIGKILL.\n", command, pid); 746 MYLOGE("couldn not kill command '%s' (pid %d) even with SIGKILL.\n", command, pid); 747 } 748 } 749 return -1; 750 } else if (status) { 751 format_args(command, args, &cmd); 752 printf("*** command '%s' failed: %s\n", cmd.c_str(), strerror(errno)); 753 MYLOGE("command '%s' failed: %s\n", cmd.c_str(), strerror(errno)); 754 return -2; 755 } 756 757 if (WIFSIGNALED(status)) { 758 printf("*** %s: Killed by signal %d\n", command, WTERMSIG(status)); 759 } else if (WIFEXITED(status) && WEXITSTATUS(status) > 0) { 760 printf("*** %s: Exit code %d\n", command, WEXITSTATUS(status)); 761 } 762 763 if (weight > 0) { 764 update_progress(weight); 765 } 766 return status; 767} 768 769bool drop_root_user() { 770 if (getgid() == AID_SHELL && getuid() == AID_SHELL) { 771 MYLOGD("drop_root_user(): already running as Shell"); 772 return true; 773 } 774 /* ensure we will keep capabilities when we drop root */ 775 if (prctl(PR_SET_KEEPCAPS, 1) < 0) { 776 MYLOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); 777 return false; 778 } 779 780 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, 781 AID_MOUNT, AID_INET, AID_NET_BW_STATS, AID_READPROC }; 782 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 783 MYLOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); 784 return false; 785 } 786 if (setgid(AID_SHELL) != 0) { 787 MYLOGE("Unable to setgid, aborting: %s\n", strerror(errno)); 788 return false; 789 } 790 if (setuid(AID_SHELL) != 0) { 791 MYLOGE("Unable to setuid, aborting: %s\n", strerror(errno)); 792 return false; 793 } 794 795 struct __user_cap_header_struct capheader; 796 struct __user_cap_data_struct capdata[2]; 797 memset(&capheader, 0, sizeof(capheader)); 798 memset(&capdata, 0, sizeof(capdata)); 799 capheader.version = _LINUX_CAPABILITY_VERSION_3; 800 capheader.pid = 0; 801 802 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); 803 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); 804 capdata[0].inheritable = 0; 805 capdata[1].inheritable = 0; 806 807 if (capset(&capheader, &capdata[0]) < 0) { 808 MYLOGE("capset failed: %s\n", strerror(errno)); 809 return false; 810 } 811 812 return true; 813} 814 815void send_broadcast(const std::string& action, const std::vector<std::string>& args) { 816 if (args.size() > 1000) { 817 MYLOGE("send_broadcast: too many arguments (%d)\n", (int) args.size()); 818 return; 819 } 820 const char *am_args[1024] = { "/system/bin/am", "broadcast", "--user", "0", "-a", 821 action.c_str() }; 822 size_t am_index = 5; // Starts at the index of last initial value above. 823 for (const std::string& arg : args) { 824 am_args[++am_index] = arg.c_str(); 825 } 826 // Always terminate with NULL. 827 am_args[am_index + 1] = NULL; 828 std::string args_string; 829 format_args(am_index + 1, am_args, &args_string); 830 MYLOGD("send_broadcast command: %s\n", args_string.c_str()); 831 run_command_always(NULL, 5, true, am_args); 832} 833 834size_t num_props = 0; 835static char* props[2000]; 836 837static void print_prop(const char *key, const char *name, void *user) { 838 (void) user; 839 if (num_props < sizeof(props) / sizeof(props[0])) { 840 char buf[PROPERTY_KEY_MAX + PROPERTY_VALUE_MAX + 10]; 841 snprintf(buf, sizeof(buf), "[%s]: [%s]\n", key, name); 842 props[num_props++] = strdup(buf); 843 } 844} 845 846static int compare_prop(const void *a, const void *b) { 847 return strcmp(*(char * const *) a, *(char * const *) b); 848} 849 850/* prints all the system properties */ 851void print_properties() { 852 const char* title = "SYSTEM PROPERTIES"; 853 DurationReporter duration_reporter(title); 854 printf("------ %s ------\n", title); 855 ON_DRY_RUN_RETURN(); 856 size_t i; 857 num_props = 0; 858 property_list(print_prop, NULL); 859 qsort(&props, num_props, sizeof(props[0]), compare_prop); 860 861 for (i = 0; i < num_props; ++i) { 862 fputs(props[i], stdout); 863 free(props[i]); 864 } 865 printf("\n"); 866} 867 868/* redirect output to a service control socket */ 869void redirect_to_socket(FILE *redirect, const char *service) { 870 int s = android_get_control_socket(service); 871 if (s < 0) { 872 MYLOGE("android_get_control_socket(%s): %s\n", service, strerror(errno)); 873 exit(1); 874 } 875 fcntl(s, F_SETFD, FD_CLOEXEC); 876 if (listen(s, 4) < 0) { 877 MYLOGE("listen(control socket): %s\n", strerror(errno)); 878 exit(1); 879 } 880 881 struct sockaddr addr; 882 socklen_t alen = sizeof(addr); 883 int fd = accept(s, &addr, &alen); 884 if (fd < 0) { 885 MYLOGE("accept(control socket): %s\n", strerror(errno)); 886 exit(1); 887 } 888 889 fflush(redirect); 890 dup2(fd, fileno(redirect)); 891 close(fd); 892} 893 894void create_parent_dirs(const char *path) { 895 char *chp = const_cast<char *> (path); 896 897 /* skip initial slash */ 898 if (chp[0] == '/') 899 chp++; 900 901 /* create leading directories, if necessary */ 902 struct stat dir_stat; 903 while (chp && chp[0]) { 904 chp = strchr(chp, '/'); 905 if (chp) { 906 *chp = 0; 907 if (stat(path, &dir_stat) == -1 || !S_ISDIR(dir_stat.st_mode)) { 908 MYLOGI("Creating directory %s\n", path); 909 if (mkdir(path, 0770)) { /* drwxrwx--- */ 910 MYLOGE("Unable to create directory %s: %s\n", path, strerror(errno)); 911 } else if (chown(path, AID_SHELL, AID_SHELL)) { 912 MYLOGE("Unable to change ownership of dir %s: %s\n", path, strerror(errno)); 913 } 914 } 915 *chp++ = '/'; 916 } 917 } 918} 919 920/* redirect output to a file */ 921void redirect_to_file(FILE *redirect, char *path) { 922 create_parent_dirs(path); 923 924 int fd = TEMP_FAILURE_RETRY(open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_NOFOLLOW, 925 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); 926 if (fd < 0) { 927 MYLOGE("%s: %s\n", path, strerror(errno)); 928 exit(1); 929 } 930 931 TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); 932 close(fd); 933} 934 935static bool should_dump_native_traces(const char* path) { 936 for (const char** p = native_processes_to_dump; *p; p++) { 937 if (!strcmp(*p, path)) { 938 return true; 939 } 940 } 941 return false; 942} 943 944/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */ 945const char *dump_traces() { 946 DurationReporter duration_reporter("DUMP TRACES", NULL); 947 ON_DRY_RUN_RETURN(NULL); 948 const char* result = NULL; 949 950 char traces_path[PROPERTY_VALUE_MAX] = ""; 951 property_get("dalvik.vm.stack-trace-file", traces_path, ""); 952 if (!traces_path[0]) return NULL; 953 954 /* move the old traces.txt (if any) out of the way temporarily */ 955 char anr_traces_path[PATH_MAX]; 956 strlcpy(anr_traces_path, traces_path, sizeof(anr_traces_path)); 957 strlcat(anr_traces_path, ".anr", sizeof(anr_traces_path)); 958 if (rename(traces_path, anr_traces_path) && errno != ENOENT) { 959 MYLOGE("rename(%s, %s): %s\n", traces_path, anr_traces_path, strerror(errno)); 960 return NULL; // Can't rename old traces.txt -- no permission? -- leave it alone instead 961 } 962 963 /* create a new, empty traces.txt file to receive stack dumps */ 964 int fd = TEMP_FAILURE_RETRY(open(traces_path, O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 965 0666)); /* -rw-rw-rw- */ 966 if (fd < 0) { 967 MYLOGE("%s: %s\n", traces_path, strerror(errno)); 968 return NULL; 969 } 970 int chmod_ret = fchmod(fd, 0666); 971 if (chmod_ret < 0) { 972 MYLOGE("fchmod on %s failed: %s\n", traces_path, strerror(errno)); 973 close(fd); 974 return NULL; 975 } 976 977 /* Variables below must be initialized before 'goto' statements */ 978 int dalvik_found = 0; 979 int ifd, wfd = -1; 980 981 /* walk /proc and kill -QUIT all Dalvik processes */ 982 DIR *proc = opendir("/proc"); 983 if (proc == NULL) { 984 MYLOGE("/proc: %s\n", strerror(errno)); 985 goto error_close_fd; 986 } 987 988 /* use inotify to find when processes are done dumping */ 989 ifd = inotify_init(); 990 if (ifd < 0) { 991 MYLOGE("inotify_init: %s\n", strerror(errno)); 992 goto error_close_fd; 993 } 994 995 wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE); 996 if (wfd < 0) { 997 MYLOGE("inotify_add_watch(%s): %s\n", traces_path, strerror(errno)); 998 goto error_close_ifd; 999 } 1000 1001 struct dirent *d; 1002 while ((d = readdir(proc))) { 1003 int pid = atoi(d->d_name); 1004 if (pid <= 0) continue; 1005 1006 char path[PATH_MAX]; 1007 char data[PATH_MAX]; 1008 snprintf(path, sizeof(path), "/proc/%d/exe", pid); 1009 ssize_t len = readlink(path, data, sizeof(data) - 1); 1010 if (len <= 0) { 1011 continue; 1012 } 1013 data[len] = '\0'; 1014 1015 if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) { 1016 /* skip zygote -- it won't dump its stack anyway */ 1017 snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); 1018 int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC)); 1019 len = read(cfd, data, sizeof(data) - 1); 1020 close(cfd); 1021 if (len <= 0) { 1022 continue; 1023 } 1024 data[len] = '\0'; 1025 if (!strncmp(data, "zygote", strlen("zygote"))) { 1026 continue; 1027 } 1028 1029 ++dalvik_found; 1030 uint64_t start = DurationReporter::nanotime(); 1031 if (kill(pid, SIGQUIT)) { 1032 MYLOGE("kill(%d, SIGQUIT): %s\n", pid, strerror(errno)); 1033 continue; 1034 } 1035 1036 /* wait for the writable-close notification from inotify */ 1037 struct pollfd pfd = { ifd, POLLIN, 0 }; 1038 int ret = poll(&pfd, 1, 5000); /* 5 sec timeout */ 1039 if (ret < 0) { 1040 MYLOGE("poll: %s\n", strerror(errno)); 1041 } else if (ret == 0) { 1042 MYLOGE("warning: timed out dumping pid %d\n", pid); 1043 } else { 1044 struct inotify_event ie; 1045 read(ifd, &ie, sizeof(ie)); 1046 } 1047 1048 if (lseek(fd, 0, SEEK_END) < 0) { 1049 MYLOGE("lseek: %s\n", strerror(errno)); 1050 } else { 1051 dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n", 1052 pid, (float)(DurationReporter::nanotime() - start) / NANOS_PER_SEC); 1053 } 1054 } else if (should_dump_native_traces(data)) { 1055 /* dump native process if appropriate */ 1056 if (lseek(fd, 0, SEEK_END) < 0) { 1057 MYLOGE("lseek: %s\n", strerror(errno)); 1058 } else { 1059 static uint16_t timeout_failures = 0; 1060 uint64_t start = DurationReporter::nanotime(); 1061 1062 /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */ 1063 if (timeout_failures == 3) { 1064 dprintf(fd, "too many stack dump failures, skipping...\n"); 1065 } else if (dump_backtrace_to_file_timeout(pid, fd, 20) == -1) { 1066 dprintf(fd, "dumping failed, likely due to a timeout\n"); 1067 timeout_failures++; 1068 } else { 1069 timeout_failures = 0; 1070 } 1071 dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n", 1072 pid, (float)(DurationReporter::nanotime() - start) / NANOS_PER_SEC); 1073 } 1074 } 1075 } 1076 1077 if (dalvik_found == 0) { 1078 MYLOGE("Warning: no Dalvik processes found to dump stacks\n"); 1079 } 1080 1081 static char dump_traces_path[PATH_MAX]; 1082 strlcpy(dump_traces_path, traces_path, sizeof(dump_traces_path)); 1083 strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path)); 1084 if (rename(traces_path, dump_traces_path)) { 1085 MYLOGE("rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno)); 1086 goto error_close_ifd; 1087 } 1088 result = dump_traces_path; 1089 1090 /* replace the saved [ANR] traces.txt file */ 1091 rename(anr_traces_path, traces_path); 1092 1093error_close_ifd: 1094 close(ifd); 1095error_close_fd: 1096 close(fd); 1097 return result; 1098} 1099 1100void dump_route_tables() { 1101 DurationReporter duration_reporter("DUMP ROUTE TABLES"); 1102 ON_DRY_RUN_RETURN(); 1103 const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; 1104 dump_file("RT_TABLES", RT_TABLES_PATH); 1105 FILE* fp = fopen(RT_TABLES_PATH, "re"); 1106 if (!fp) { 1107 printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); 1108 return; 1109 } 1110 char table[16]; 1111 // Each line has an integer (the table number), a space, and a string (the table name). We only 1112 // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. 1113 // Add a fixed max limit so this doesn't go awry. 1114 for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { 1115 run_command("ROUTE TABLE IPv4", 10, "ip", "-4", "route", "show", "table", table, NULL); 1116 run_command("ROUTE TABLE IPv6", 10, "ip", "-6", "route", "show", "table", table, NULL); 1117 } 1118 fclose(fp); 1119} 1120 1121/* overall progress */ 1122int progress = 0; 1123int do_update_progress = 0; // Set by dumpstate.cpp 1124int weight_total = WEIGHT_TOTAL; 1125 1126// TODO: make this function thread safe if sections are generated in parallel. 1127void update_progress(int delta) { 1128 if (!do_update_progress) return; 1129 1130 progress += delta; 1131 1132 char key[PROPERTY_KEY_MAX]; 1133 char value[PROPERTY_VALUE_MAX]; 1134 1135 // adjusts max on the fly 1136 if (progress > weight_total) { 1137 int new_total = weight_total * 1.2; 1138 MYLOGD("Adjusting total weight from %d to %d\n", weight_total, new_total); 1139 weight_total = new_total; 1140 sprintf(key, "dumpstate.%d.max", getpid()); 1141 sprintf(value, "%d", weight_total); 1142 int status = property_set(key, value); 1143 if (status) { 1144 MYLOGE("Could not update max weight by setting system property %s to %s: %d\n", 1145 key, value, status); 1146 } 1147 } 1148 1149 sprintf(key, "dumpstate.%d.progress", getpid()); 1150 sprintf(value, "%d", progress); 1151 1152 if (progress % 100 == 0) { 1153 // We don't want to spam logcat, so only log multiples of 100. 1154 MYLOGD("Setting progress (%s): %s/%d\n", key, value, weight_total); 1155 } else { 1156 // stderr is ignored on normal invocations, but useful when calling /system/bin/dumpstate 1157 // directly for debuggging. 1158 fprintf(stderr, "Setting progress (%s): %s/%d\n", key, value, weight_total); 1159 } 1160 1161 int status = property_set(key, value); 1162 if (status) { 1163 MYLOGE("Could not update progress by setting system property %s to %s: %d\n", 1164 key, value, status); 1165 } 1166} 1167 1168void take_screenshot(const std::string& path) { 1169 const char *args[] = { "/system/bin/screencap", "-p", path.c_str(), NULL }; 1170 run_command_always(NULL, false, 10, args); 1171} 1172 1173void vibrate(FILE* vibrator, int ms) { 1174 fprintf(vibrator, "%d\n", ms); 1175 fflush(vibrator); 1176} 1177 1178bool is_dir(const char* pathname) { 1179 struct stat info; 1180 if (stat(pathname, &info) == -1) { 1181 return false; 1182 } 1183 return S_ISDIR(info.st_mode); 1184} 1185 1186time_t get_mtime(int fd, time_t default_mtime) { 1187 struct stat info; 1188 if (fstat(fd, &info) == -1) { 1189 return default_mtime; 1190 } 1191 return info.st_mtime; 1192} 1193 1194void dump_emmc_ecsd(const char *ext_csd_path) { 1195 static const size_t EXT_CSD_REV = 192; 1196 static const size_t EXT_PRE_EOL_INFO = 267; 1197 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_A = 268; 1198 static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_B = 269; 1199 struct hex { 1200 char str[2]; 1201 } buffer[512]; 1202 int fd, ext_csd_rev, ext_pre_eol_info; 1203 ssize_t bytes_read; 1204 static const char *ver_str[] = { 1205 "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0" 1206 }; 1207 static const char *eol_str[] = { 1208 "Undefined", 1209 "Normal", 1210 "Warning (consumed 80% of reserve)", 1211 "Urgent (consumed 90% of reserve)" 1212 }; 1213 1214 printf("------ %s Extended CSD ------\n", ext_csd_path); 1215 1216 fd = TEMP_FAILURE_RETRY(open(ext_csd_path, 1217 O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 1218 if (fd < 0) { 1219 printf("*** %s: %s\n\n", ext_csd_path, strerror(errno)); 1220 return; 1221 } 1222 1223 bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 1224 close(fd); 1225 if (bytes_read < 0) { 1226 printf("*** %s: %s\n\n", ext_csd_path, strerror(errno)); 1227 return; 1228 } 1229 if (bytes_read < (ssize_t)(EXT_CSD_REV * sizeof(struct hex))) { 1230 printf("*** %s: truncated content %zd\n\n", ext_csd_path, bytes_read); 1231 return; 1232 } 1233 1234 ext_csd_rev = 0; 1235 if (sscanf(buffer[EXT_CSD_REV].str, "%02x", &ext_csd_rev) != 1) { 1236 printf("*** %s: EXT_CSD_REV parse error \"%.2s\"\n\n", 1237 ext_csd_path, buffer[EXT_CSD_REV].str); 1238 return; 1239 } 1240 1241 printf("rev 1.%d (MMC %s)\n", 1242 ext_csd_rev, 1243 (ext_csd_rev < (int)(sizeof(ver_str) / sizeof(ver_str[0]))) ? 1244 ver_str[ext_csd_rev] : 1245 "Unknown"); 1246 if (ext_csd_rev < 7) { 1247 printf("\n"); 1248 return; 1249 } 1250 1251 if (bytes_read < (ssize_t)(EXT_PRE_EOL_INFO * sizeof(struct hex))) { 1252 printf("*** %s: truncated content %zd\n\n", ext_csd_path, bytes_read); 1253 return; 1254 } 1255 1256 ext_pre_eol_info = 0; 1257 if (sscanf(buffer[EXT_PRE_EOL_INFO].str, "%02x", &ext_pre_eol_info) != 1) { 1258 printf("*** %s: PRE_EOL_INFO parse error \"%.2s\"\n\n", 1259 ext_csd_path, buffer[EXT_PRE_EOL_INFO].str); 1260 return; 1261 } 1262 printf("PRE_EOL_INFO %d (MMC %s)\n", 1263 ext_pre_eol_info, 1264 eol_str[(ext_pre_eol_info < (int) 1265 (sizeof(eol_str) / sizeof(eol_str[0]))) ? 1266 ext_pre_eol_info : 0]); 1267 1268 for (size_t lifetime = EXT_DEVICE_LIFE_TIME_EST_TYP_A; 1269 lifetime <= EXT_DEVICE_LIFE_TIME_EST_TYP_B; 1270 ++lifetime) { 1271 int ext_device_life_time_est; 1272 static const char *est_str[] = { 1273 "Undefined", 1274 "0-10% of device lifetime used", 1275 "10-20% of device lifetime used", 1276 "20-30% of device lifetime used", 1277 "30-40% of device lifetime used", 1278 "40-50% of device lifetime used", 1279 "50-60% of device lifetime used", 1280 "60-70% of device lifetime used", 1281 "70-80% of device lifetime used", 1282 "80-90% of device lifetime used", 1283 "90-100% of device lifetime used", 1284 "Exceeded the maximum estimated device lifetime", 1285 }; 1286 1287 if (bytes_read < (ssize_t)(lifetime * sizeof(struct hex))) { 1288 printf("*** %s: truncated content %zd\n", ext_csd_path, bytes_read); 1289 break; 1290 } 1291 1292 ext_device_life_time_est = 0; 1293 if (sscanf(buffer[lifetime].str, "%02x", &ext_device_life_time_est) != 1) { 1294 printf("*** %s: DEVICE_LIFE_TIME_EST_TYP_%c parse error \"%.2s\"\n", 1295 ext_csd_path, 1296 (unsigned)(lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) + 'A', 1297 buffer[lifetime].str); 1298 continue; 1299 } 1300 printf("DEVICE_LIFE_TIME_EST_TYP_%c %d (MMC %s)\n", 1301 (unsigned)(lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) + 'A', 1302 ext_device_life_time_est, 1303 est_str[(ext_device_life_time_est < (int) 1304 (sizeof(est_str) / sizeof(est_str[0]))) ? 1305 ext_device_life_time_est : 0]); 1306 } 1307 1308 printf("\n"); 1309} 1310 1311// TODO: refactor all those commands that convert args 1312void format_args(int argc, const char *argv[], std::string *args) { 1313 LOG_ALWAYS_FATAL_IF(args == nullptr); 1314 for (int i = 0; i < argc; i++) { 1315 args->append(argv[i]); 1316 if (i < argc -1) { 1317 args->append(" "); 1318 } 1319 } 1320} 1321void format_args(const char* command, const char *args[], std::string *string) { 1322 LOG_ALWAYS_FATAL_IF(args == nullptr || command == nullptr); 1323 string->append(command); 1324 if (args[0] == nullptr) return; 1325 string->append(" "); 1326 1327 for (int arg = 1; arg <= 1000; ++arg) { 1328 if (args[arg] == nullptr) return; 1329 string->append(args[arg]); 1330 if (args[arg+1] != nullptr) { 1331 string->append(" "); 1332 } 1333 } 1334 MYLOGE("internal error: missing NULL entry on %s", string->c_str()); 1335} 1336