dumpstate.cpp revision f7f2651e0c07d138679fd405999f30d0ab35e10b
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 <libgen.h> 21#include <limits.h> 22#include <memory> 23#include <regex> 24#include <set> 25#include <stdbool.h> 26#include <stdio.h> 27#include <stdlib.h> 28#include <string> 29#include <string.h> 30#include <sys/capability.h> 31#include <sys/prctl.h> 32#include <sys/resource.h> 33#include <sys/stat.h> 34#include <sys/time.h> 35#include <sys/wait.h> 36#include <unistd.h> 37 38#include <android-base/stringprintf.h> 39#include <cutils/properties.h> 40 41#include "private/android_filesystem_config.h" 42 43#define LOG_TAG "dumpstate" 44#include <cutils/log.h> 45 46#include "dumpstate.h" 47#include "ScopedFd.h" 48#include "ziparchive/zip_writer.h" 49 50#include "mincrypt/sha256.h" 51 52using android::base::StringPrintf; 53 54/* read before root is shed */ 55static char cmdline_buf[16384] = "(unknown)"; 56static const char *dump_traces_path = NULL; 57 58// TODO: should be part of dumpstate object 59static unsigned long id; 60static char build_type[PROPERTY_VALUE_MAX]; 61static time_t now; 62static std::unique_ptr<ZipWriter> zip_writer; 63static std::set<std::string> mount_points; 64void add_mountinfo(); 65static bool add_zip_entry(const std::string& entry_name, const std::string& entry_path); 66 67#define PSTORE_LAST_KMSG "/sys/fs/pstore/console-ramoops" 68 69#define RAFT_DIR "/data/misc/raft/" 70#define RECOVERY_DIR "/cache/recovery" 71#define TOMBSTONE_DIR "/data/tombstones" 72#define TOMBSTONE_FILE_PREFIX TOMBSTONE_DIR "/tombstone_" 73/* Can accomodate a tombstone number up to 9999. */ 74#define TOMBSTONE_MAX_LEN (sizeof(TOMBSTONE_FILE_PREFIX) + 4) 75#define NUM_TOMBSTONES 10 76 77typedef struct { 78 char name[TOMBSTONE_MAX_LEN]; 79 int fd; 80} tombstone_data_t; 81 82static tombstone_data_t tombstone_data[NUM_TOMBSTONES]; 83 84// Root dir for all files copied as-is into the bugreport 85const std::string& ZIP_ROOT_DIR = "FS"; 86 87/* 88 * List of supported zip format versions. 89 * 90 * See bugreport-format.txt for more info. 91 */ 92// TODO: change to "v1" before final N build 93static std::string VERSION_DEFAULT = "v1-dev2"; 94 95/* gets the tombstone data, according to the bugreport type: if zipped gets all tombstones, 96 * otherwise gets just those modified in the last half an hour. */ 97static void get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES]) { 98 time_t thirty_minutes_ago = now - 60*30; 99 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 100 snprintf(data[i].name, sizeof(data[i].name), "%s%02zu", TOMBSTONE_FILE_PREFIX, i); 101 int fd = TEMP_FAILURE_RETRY(open(data[i].name, 102 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 103 struct stat st; 104 if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) && 105 (zip_writer || (time_t) st.st_mtime >= thirty_minutes_ago)) { 106 data[i].fd = fd; 107 } else { 108 close(fd); 109 data[i].fd = -1; 110 } 111 } 112} 113 114// for_each_pid() callback to get mount info about a process. 115void do_mountinfo(int pid, const char *name) { 116 char path[PATH_MAX]; 117 118 // Gets the the content of the /proc/PID/ns/mnt link, so only unique mount points 119 // are added. 120 sprintf(path, "/proc/%d/ns/mnt", pid); 121 char linkname[PATH_MAX]; 122 ssize_t r = readlink(path, linkname, PATH_MAX); 123 if (r == -1) { 124 MYLOGE("Unable to read link for %s: %s\n", path, strerror(errno)); 125 return; 126 } 127 linkname[r] = '\0'; 128 129 if (mount_points.find(linkname) == mount_points.end()) { 130 // First time this mount point was found: add it 131 sprintf(path, "/proc/%d/mountinfo", pid); 132 if (add_zip_entry(ZIP_ROOT_DIR + path, path)) { 133 mount_points.insert(linkname); 134 } else { 135 MYLOGE("Unable to add mountinfo %s to zip file\n", path); 136 } 137 } 138} 139 140void add_mountinfo() { 141 if (!zip_writer) return; 142 const char *title = "MOUNT INFO"; 143 mount_points.clear(); 144 DurationReporter duration_reporter(title, NULL); 145 for_each_pid(do_mountinfo, NULL); 146 MYLOGD("%s: %d entries added to zip file\n", title, (int) mount_points.size()); 147} 148 149static void dump_dev_files(const char *title, const char *driverpath, const char *filename) 150{ 151 DIR *d; 152 struct dirent *de; 153 char path[PATH_MAX]; 154 155 d = opendir(driverpath); 156 if (d == NULL) { 157 return; 158 } 159 160 while ((de = readdir(d))) { 161 if (de->d_type != DT_LNK) { 162 continue; 163 } 164 snprintf(path, sizeof(path), "%s/%s/%s", driverpath, de->d_name, filename); 165 dump_file(title, path); 166 } 167 168 closedir(d); 169} 170 171static bool skip_not_stat(const char *path) { 172 static const char stat[] = "/stat"; 173 size_t len = strlen(path); 174 if (path[len - 1] == '/') { /* Directory? */ 175 return false; 176 } 177 return strcmp(path + len - sizeof(stat) + 1, stat); /* .../stat? */ 178} 179 180static bool skip_none(const char *path) { 181 return false; 182} 183 184static const char mmcblk0[] = "/sys/block/mmcblk0/"; 185unsigned long worst_write_perf = 20000; /* in KB/s */ 186 187// 188// stat offsets 189// Name units description 190// ---- ----- ----------- 191// read I/Os requests number of read I/Os processed 192#define __STAT_READ_IOS 0 193// read merges requests number of read I/Os merged with in-queue I/O 194#define __STAT_READ_MERGES 1 195// read sectors sectors number of sectors read 196#define __STAT_READ_SECTORS 2 197// read ticks milliseconds total wait time for read requests 198#define __STAT_READ_TICKS 3 199// write I/Os requests number of write I/Os processed 200#define __STAT_WRITE_IOS 4 201// write merges requests number of write I/Os merged with in-queue I/O 202#define __STAT_WRITE_MERGES 5 203// write sectors sectors number of sectors written 204#define __STAT_WRITE_SECTORS 6 205// write ticks milliseconds total wait time for write requests 206#define __STAT_WRITE_TICKS 7 207// in_flight requests number of I/Os currently in flight 208#define __STAT_IN_FLIGHT 8 209// io_ticks milliseconds total time this block device has been active 210#define __STAT_IO_TICKS 9 211// time_in_queue milliseconds total wait time for all requests 212#define __STAT_IN_QUEUE 10 213#define __STAT_NUMBER_FIELD 11 214// 215// read I/Os, write I/Os 216// ===================== 217// 218// These values increment when an I/O request completes. 219// 220// read merges, write merges 221// ========================= 222// 223// These values increment when an I/O request is merged with an 224// already-queued I/O request. 225// 226// read sectors, write sectors 227// =========================== 228// 229// These values count the number of sectors read from or written to this 230// block device. The "sectors" in question are the standard UNIX 512-byte 231// sectors, not any device- or filesystem-specific block size. The 232// counters are incremented when the I/O completes. 233#define SECTOR_SIZE 512 234// 235// read ticks, write ticks 236// ======================= 237// 238// These values count the number of milliseconds that I/O requests have 239// waited on this block device. If there are multiple I/O requests waiting, 240// these values will increase at a rate greater than 1000/second; for 241// example, if 60 read requests wait for an average of 30 ms, the read_ticks 242// field will increase by 60*30 = 1800. 243// 244// in_flight 245// ========= 246// 247// This value counts the number of I/O requests that have been issued to 248// the device driver but have not yet completed. It does not include I/O 249// requests that are in the queue but not yet issued to the device driver. 250// 251// io_ticks 252// ======== 253// 254// This value counts the number of milliseconds during which the device has 255// had I/O requests queued. 256// 257// time_in_queue 258// ============= 259// 260// This value counts the number of milliseconds that I/O requests have waited 261// on this block device. If there are multiple I/O requests waiting, this 262// value will increase as the product of the number of milliseconds times the 263// number of requests waiting (see "read ticks" above for an example). 264#define S_TO_MS 1000 265// 266 267static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) { 268 unsigned long long fields[__STAT_NUMBER_FIELD]; 269 bool z; 270 char *cp, *buffer = NULL; 271 size_t i = 0; 272 FILE *fp = fdopen(fd, "rb"); 273 getline(&buffer, &i, fp); 274 fclose(fp); 275 if (!buffer) { 276 return -errno; 277 } 278 i = strlen(buffer); 279 while ((i > 0) && (buffer[i - 1] == '\n')) { 280 buffer[--i] = '\0'; 281 } 282 if (!*buffer) { 283 free(buffer); 284 return 0; 285 } 286 z = true; 287 for (cp = buffer, i = 0; i < (sizeof(fields) / sizeof(fields[0])); ++i) { 288 fields[i] = strtoull(cp, &cp, 10); 289 if (fields[i] != 0) { 290 z = false; 291 } 292 } 293 if (z) { /* never accessed */ 294 free(buffer); 295 return 0; 296 } 297 298 if (!strncmp(path, mmcblk0, sizeof(mmcblk0) - 1)) { 299 path += sizeof(mmcblk0) - 1; 300 } 301 302 printf("%s: %s\n", path, buffer); 303 free(buffer); 304 305 if (fields[__STAT_IO_TICKS]) { 306 unsigned long read_perf = 0; 307 unsigned long read_ios = 0; 308 if (fields[__STAT_READ_TICKS]) { 309 unsigned long long divisor = fields[__STAT_READ_TICKS] 310 * fields[__STAT_IO_TICKS]; 311 read_perf = ((unsigned long long)SECTOR_SIZE 312 * fields[__STAT_READ_SECTORS] 313 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 314 / divisor; 315 read_ios = ((unsigned long long)S_TO_MS * fields[__STAT_READ_IOS] 316 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 317 / divisor; 318 } 319 320 unsigned long write_perf = 0; 321 unsigned long write_ios = 0; 322 if (fields[__STAT_WRITE_TICKS]) { 323 unsigned long long divisor = fields[__STAT_WRITE_TICKS] 324 * fields[__STAT_IO_TICKS]; 325 write_perf = ((unsigned long long)SECTOR_SIZE 326 * fields[__STAT_WRITE_SECTORS] 327 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 328 / divisor; 329 write_ios = ((unsigned long long)S_TO_MS * fields[__STAT_WRITE_IOS] 330 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 331 / divisor; 332 } 333 334 unsigned queue = (fields[__STAT_IN_QUEUE] 335 + (fields[__STAT_IO_TICKS] >> 1)) 336 / fields[__STAT_IO_TICKS]; 337 338 if (!write_perf && !write_ios) { 339 printf("%s: perf(ios) rd: %luKB/s(%lu/s) q: %u\n", 340 path, read_perf, read_ios, queue); 341 } else { 342 printf("%s: perf(ios) rd: %luKB/s(%lu/s) wr: %luKB/s(%lu/s) q: %u\n", 343 path, read_perf, read_ios, write_perf, write_ios, queue); 344 } 345 346 /* bugreport timeout factor adjustment */ 347 if ((write_perf > 1) && (write_perf < worst_write_perf)) { 348 worst_write_perf = write_perf; 349 } 350 } 351 return 0; 352} 353 354/* Copied policy from system/core/logd/LogBuffer.cpp */ 355 356#define LOG_BUFFER_SIZE (256 * 1024) 357#define LOG_BUFFER_MIN_SIZE (64 * 1024UL) 358#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL) 359 360static bool valid_size(unsigned long value) { 361 if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) { 362 return false; 363 } 364 365 long pages = sysconf(_SC_PHYS_PAGES); 366 if (pages < 1) { 367 return true; 368 } 369 370 long pagesize = sysconf(_SC_PAGESIZE); 371 if (pagesize <= 1) { 372 pagesize = PAGE_SIZE; 373 } 374 375 // maximum memory impact a somewhat arbitrary ~3% 376 pages = (pages + 31) / 32; 377 unsigned long maximum = pages * pagesize; 378 379 if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) { 380 return true; 381 } 382 383 return value <= maximum; 384} 385 386static unsigned long property_get_size(const char *key) { 387 unsigned long value; 388 char *cp, property[PROPERTY_VALUE_MAX]; 389 390 property_get(key, property, ""); 391 value = strtoul(property, &cp, 10); 392 393 switch(*cp) { 394 case 'm': 395 case 'M': 396 value *= 1024; 397 /* FALLTHRU */ 398 case 'k': 399 case 'K': 400 value *= 1024; 401 /* FALLTHRU */ 402 case '\0': 403 break; 404 405 default: 406 value = 0; 407 } 408 409 if (!valid_size(value)) { 410 value = 0; 411 } 412 413 return value; 414} 415 416/* timeout in ms */ 417static unsigned long logcat_timeout(const char *name) { 418 static const char global_tuneable[] = "persist.logd.size"; // Settings App 419 static const char global_default[] = "ro.logd.size"; // BoardConfig.mk 420 char key[PROP_NAME_MAX]; 421 unsigned long property_size, default_size; 422 423 default_size = property_get_size(global_tuneable); 424 if (!default_size) { 425 default_size = property_get_size(global_default); 426 } 427 428 snprintf(key, sizeof(key), "%s.%s", global_tuneable, name); 429 property_size = property_get_size(key); 430 431 if (!property_size) { 432 snprintf(key, sizeof(key), "%s.%s", global_default, name); 433 property_size = property_get_size(key); 434 } 435 436 if (!property_size) { 437 property_size = default_size; 438 } 439 440 if (!property_size) { 441 property_size = LOG_BUFFER_SIZE; 442 } 443 444 /* Engineering margin is ten-fold our guess */ 445 return 10 * (property_size + worst_write_perf) / worst_write_perf; 446} 447 448/* End copy from system/core/logd/LogBuffer.cpp */ 449 450/* dumps the current system state to stdout */ 451static void print_header(std::string version) { 452 char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX]; 453 char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX]; 454 char network[PROPERTY_VALUE_MAX], date[80]; 455 456 property_get("ro.build.display.id", build, "(unknown)"); 457 property_get("ro.build.fingerprint", fingerprint, "(unknown)"); 458 property_get("ro.build.type", build_type, "(unknown)"); 459 property_get("ro.baseband", radio, "(unknown)"); 460 property_get("ro.bootloader", bootloader, "(unknown)"); 461 property_get("gsm.operator.alpha", network, "(unknown)"); 462 strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&now)); 463 464 printf("========================================================\n"); 465 printf("== dumpstate: %s\n", date); 466 printf("========================================================\n"); 467 468 printf("\n"); 469 printf("Build: %s\n", build); 470 printf("Build fingerprint: '%s'\n", fingerprint); /* format is important for other tools */ 471 printf("Bootloader: %s\n", bootloader); 472 printf("Radio: %s\n", radio); 473 printf("Network: %s\n", network); 474 475 printf("Kernel: "); 476 dump_file(NULL, "/proc/version"); 477 printf("Command line: %s\n", strtok(cmdline_buf, "\n")); 478 printf("Bugreport format version: %s\n", version.c_str()); 479 printf("Dumpstate info: id=%lu pid=%d\n", id, getpid()); 480 printf("\n"); 481} 482 483/* adds a new entry to the existing zip file. */ 484static bool add_zip_entry_from_fd(const std::string& entry_name, int fd) { 485 if (!zip_writer) { 486 MYLOGD("Not adding zip entry %s from fd because zip_writer is not set\n", 487 entry_name.c_str()); 488 return false; 489 } 490 // Logging statement below is useful to time how long each entry takes, but it's too verbose. 491 // MYLOGD("Adding zip entry %s\n", entry_name.c_str()); 492 int32_t err = zip_writer->StartEntryWithTime(entry_name.c_str(), 493 ZipWriter::kCompress, get_mtime(fd, now)); 494 if (err) { 495 MYLOGE("zip_writer->StartEntryWithTime(%s): %s\n", entry_name.c_str(), 496 ZipWriter::ErrorCodeString(err)); 497 return false; 498 } 499 500 std::vector<uint8_t> buffer(65536); 501 while (1) { 502 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer.data(), sizeof(buffer))); 503 if (bytes_read == 0) { 504 break; 505 } else if (bytes_read == -1) { 506 MYLOGE("read(%s): %s\n", entry_name.c_str(), strerror(errno)); 507 return false; 508 } 509 err = zip_writer->WriteBytes(buffer.data(), bytes_read); 510 if (err) { 511 MYLOGE("zip_writer->WriteBytes(): %s\n", ZipWriter::ErrorCodeString(err)); 512 return false; 513 } 514 } 515 516 err = zip_writer->FinishEntry(); 517 if (err) { 518 MYLOGE("zip_writer->FinishEntry(): %s\n", ZipWriter::ErrorCodeString(err)); 519 return false; 520 } 521 522 return true; 523} 524 525/* adds a new entry to the existing zip file. */ 526static bool add_zip_entry(const std::string& entry_name, const std::string& entry_path) { 527 ScopedFd fd(TEMP_FAILURE_RETRY(open(entry_path.c_str(), O_RDONLY | O_NONBLOCK | O_CLOEXEC))); 528 if (fd.get() == -1) { 529 MYLOGE("open(%s): %s\n", entry_path.c_str(), strerror(errno)); 530 return false; 531 } 532 533 return add_zip_entry_from_fd(entry_name, fd.get()); 534} 535 536/* adds a file to the existing zipped bugreport */ 537static int _add_file_from_fd(const char *title, const char *path, int fd) { 538 return add_zip_entry_from_fd(ZIP_ROOT_DIR + path, fd) ? 0 : 1; 539} 540 541/* adds all files from a directory to the zipped bugreport file */ 542void add_dir(const char *dir, bool recursive) { 543 if (!zip_writer) { 544 MYLOGD("Not adding dir %s because zip_writer is not set\n", dir); 545 return; 546 } 547 MYLOGD("Adding dir %s (recursive: %d)\n", dir, recursive); 548 DurationReporter duration_reporter(dir, NULL); 549 dump_files(NULL, dir, recursive ? skip_none : is_dir, _add_file_from_fd); 550} 551 552/* adds a text entry entry to the existing zip file. */ 553static bool add_text_zip_entry(const std::string& entry_name, const std::string& content) { 554 if (!zip_writer) { 555 MYLOGD("Not adding text zip entry %s because zip_writer is not set\n", entry_name.c_str()); 556 return false; 557 } 558 MYLOGD("Adding zip text entry %s\n", entry_name.c_str()); 559 int32_t err = zip_writer->StartEntryWithTime(entry_name.c_str(), ZipWriter::kCompress, now); 560 if (err) { 561 MYLOGE("zip_writer->StartEntryWithTime(%s): %s\n", entry_name.c_str(), 562 ZipWriter::ErrorCodeString(err)); 563 return false; 564 } 565 566 err = zip_writer->WriteBytes(content.c_str(), content.length()); 567 if (err) { 568 MYLOGE("zip_writer->WriteBytes(%s): %s\n", entry_name.c_str(), 569 ZipWriter::ErrorCodeString(err)); 570 return false; 571 } 572 573 err = zip_writer->FinishEntry(); 574 if (err) { 575 MYLOGE("zip_writer->FinishEntry(): %s\n", ZipWriter::ErrorCodeString(err)); 576 return false; 577 } 578 579 return true; 580} 581 582static void dumpstate(const std::string& screenshot_path, const std::string& version) { 583 DurationReporter duration_reporter("DUMPSTATE"); 584 unsigned long timeout; 585 586 dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version"); 587 run_command("UPTIME", 10, "uptime", NULL); 588 dump_files("UPTIME MMC PERF", mmcblk0, skip_not_stat, dump_stat_from_fd); 589 dump_emmc_ecsd("/d/mmc0/mmc0:0001/ext_csd"); 590 dump_file("MEMORY INFO", "/proc/meminfo"); 591 run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-H", NULL); 592 run_command("PROCRANK", 20, SU_PATH, "root", "procrank", NULL); 593 dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); 594 dump_file("VMALLOC INFO", "/proc/vmallocinfo"); 595 dump_file("SLAB INFO", "/proc/slabinfo"); 596 dump_file("ZONEINFO", "/proc/zoneinfo"); 597 dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); 598 dump_file("BUDDYINFO", "/proc/buddyinfo"); 599 dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); 600 601 dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources"); 602 dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state"); 603 dump_file("KERNEL SYNC", "/d/sync"); 604 605 run_command("PROCESSES AND THREADS", 10, "ps", "-Z", "-t", "-p", "-P", NULL); 606 run_command("LIBRANK", 10, SU_PATH, "root", "librank", NULL); 607 608 run_command("PRINTENV", 10, "printenv", NULL); 609 run_command("NETSTAT", 10, "netstat", "-n", NULL); 610 run_command("LSMOD", 10, "lsmod", NULL); 611 612 do_dmesg(); 613 614 run_command("LIST OF OPEN FILES", 10, SU_PATH, "root", "lsof", NULL); 615 for_each_pid(do_showmap, "SMAPS OF ALL PROCESSES"); 616 for_each_tid(show_wchan, "BLOCKED PROCESS WAIT-CHANNELS"); 617 for_each_pid(show_showtime, "PROCESS TIMES (pid cmd user system iowait+percentage)"); 618 619 if (!screenshot_path.empty()) { 620 MYLOGI("taking late screenshot\n"); 621 take_screenshot(screenshot_path); 622 MYLOGI("wrote screenshot: %s\n", screenshot_path.c_str()); 623 } 624 625 // dump_file("EVENT LOG TAGS", "/etc/event-log-tags"); 626 // calculate timeout 627 timeout = logcat_timeout("main") + logcat_timeout("system") + logcat_timeout("crash"); 628 if (timeout < 20000) { 629 timeout = 20000; 630 } 631 run_command("SYSTEM LOG", timeout / 1000, "logcat", "-v", "threadtime", 632 "-v", "printable", 633 "-d", 634 "*:v", NULL); 635 timeout = logcat_timeout("events"); 636 if (timeout < 20000) { 637 timeout = 20000; 638 } 639 run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events", 640 "-v", "threadtime", 641 "-v", "printable", 642 "-d", 643 "*:v", NULL); 644 timeout = logcat_timeout("radio"); 645 if (timeout < 20000) { 646 timeout = 20000; 647 } 648 run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio", 649 "-v", "threadtime", 650 "-v", "printable", 651 "-d", 652 "*:v", NULL); 653 654 run_command("LOG STATISTICS", 10, "logcat", "-b", "all", "-S", NULL); 655 656 run_command("RAFT LOGS", 600, SU_PATH, "root", "logcompressor", "-r", RAFT_DIR, NULL); 657 658 /* show the traces we collected in main(), if that was done */ 659 if (dump_traces_path != NULL) { 660 dump_file("VM TRACES JUST NOW", dump_traces_path); 661 } 662 663 /* only show ANR traces if they're less than 15 minutes old */ 664 struct stat st; 665 char anr_traces_path[PATH_MAX]; 666 property_get("dalvik.vm.stack-trace-file", anr_traces_path, ""); 667 if (!anr_traces_path[0]) { 668 printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n"); 669 } else { 670 int fd = TEMP_FAILURE_RETRY(open(anr_traces_path, 671 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 672 if (fd < 0) { 673 printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno)); 674 } else { 675 dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd); 676 } 677 } 678 679 /* slow traces for slow operations */ 680 if (anr_traces_path[0] != 0) { 681 int tail = strlen(anr_traces_path)-1; 682 while (tail > 0 && anr_traces_path[tail] != '/') { 683 tail--; 684 } 685 int i = 0; 686 while (1) { 687 sprintf(anr_traces_path+tail+1, "slow%02d.txt", i); 688 if (stat(anr_traces_path, &st)) { 689 // No traces file at this index, done with the files. 690 break; 691 } 692 dump_file("VM TRACES WHEN SLOW", anr_traces_path); 693 i++; 694 } 695 } 696 697 int dumped = 0; 698 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 699 if (tombstone_data[i].fd != -1) { 700 const char *name = tombstone_data[i].name; 701 int fd = tombstone_data[i].fd; 702 dumped = 1; 703 if (zip_writer) { 704 if (!add_zip_entry_from_fd(ZIP_ROOT_DIR + name, fd)) { 705 MYLOGE("Unable to add tombstone %s to zip file\n", name); 706 } 707 } else { 708 dump_file_from_fd("TOMBSTONE", name, fd); 709 } 710 close(fd); 711 tombstone_data[i].fd = -1; 712 } 713 } 714 if (!dumped) { 715 printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR); 716 } 717 718 dump_file("NETWORK DEV INFO", "/proc/net/dev"); 719 dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all"); 720 dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt"); 721 dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl"); 722 dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats"); 723 724 if (!stat(PSTORE_LAST_KMSG, &st)) { 725 /* Also TODO: Make console-ramoops CAP_SYSLOG protected. */ 726 dump_file("LAST KMSG", PSTORE_LAST_KMSG); 727 } else { 728 /* TODO: Make last_kmsg CAP_SYSLOG protected. b/5555691 */ 729 dump_file("LAST KMSG", "/proc/last_kmsg"); 730 } 731 732 /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */ 733 run_command("LAST LOGCAT", 10, "logcat", "-L", 734 "-b", "all", 735 "-v", "threadtime", 736 "-v", "printable", 737 "-d", 738 "*:v", NULL); 739 740 /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */ 741 742 run_command("NETWORK INTERFACES", 10, "ip", "link", NULL); 743 744 run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL); 745 run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL); 746 747 run_command("IP RULES", 10, "ip", "rule", "show", NULL); 748 run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL); 749 750 dump_route_tables(); 751 752 run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL); 753 run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL); 754 755 run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL); 756 run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL); 757 run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL); 758 /* no ip6 nat */ 759 run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL); 760 run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL); 761 762 run_command("WIFI NETWORKS", 20, 763 SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL); 764 765#ifdef FWDUMP_bcmdhd 766 run_command("ND OFFLOAD TABLE", 5, 767 SU_PATH, "root", "wlutil", "nd_hostip", NULL); 768 769 run_command("DUMP WIFI INTERNAL COUNTERS (1)", 20, 770 SU_PATH, "root", "wlutil", "counters", NULL); 771 772 run_command("ND OFFLOAD STATUS (1)", 5, 773 SU_PATH, "root", "wlutil", "nd_status", NULL); 774 775#endif 776 dump_file("INTERRUPTS (1)", "/proc/interrupts"); 777 778 run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL); 779 780#ifdef FWDUMP_bcmdhd 781 run_command("DUMP WIFI STATUS", 20, 782 SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL); 783 784 run_command("DUMP WIFI INTERNAL COUNTERS (2)", 20, 785 SU_PATH, "root", "wlutil", "counters", NULL); 786 787 run_command("ND OFFLOAD STATUS (2)", 5, 788 SU_PATH, "root", "wlutil", "nd_status", NULL); 789#endif 790 dump_file("INTERRUPTS (2)", "/proc/interrupts"); 791 792 print_properties(); 793 794 run_command("VOLD DUMP", 10, "vdc", "dump", NULL); 795 run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL); 796 797 run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL); 798 799 run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL); 800 801 printf("------ BACKLIGHTS ------\n"); 802 printf("LCD brightness="); 803 dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness"); 804 printf("Button brightness="); 805 dump_file(NULL, "/sys/class/leds/button-backlight/brightness"); 806 printf("Keyboard brightness="); 807 dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness"); 808 printf("ALS mode="); 809 dump_file(NULL, "/sys/class/leds/lcd-backlight/als"); 810 printf("LCD driver registers:\n"); 811 dump_file(NULL, "/sys/class/leds/lcd-backlight/registers"); 812 printf("\n"); 813 814 /* Binder state is expensive to look at as it uses a lot of memory. */ 815 dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log"); 816 dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log"); 817 dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions"); 818 dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats"); 819 dump_file("BINDER STATE", "/sys/kernel/debug/binder/state"); 820 821 printf("========================================================\n"); 822 printf("== Board\n"); 823 printf("========================================================\n"); 824 825 dumpstate_board(); 826 printf("\n"); 827 828 /* Migrate the ril_dumpstate to a dumpstate_board()? */ 829 char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0}; 830 property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30"); 831 if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) { 832 if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) { 833 // su does not exist on user builds, so try running without it. 834 // This way any implementations of vril-dump that do not require 835 // root can run on user builds. 836 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 837 "vril-dump", NULL); 838 } else { 839 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 840 SU_PATH, "root", "vril-dump", NULL); 841 } 842 } 843 844 printf("========================================================\n"); 845 printf("== Android Framework Services\n"); 846 printf("========================================================\n"); 847 848 /* the full dumpsys is starting to take a long time, so we need 849 to increase its timeout. we really need to do the timeouts in 850 dumpsys itself... */ 851 run_command("DUMPSYS", 60, "dumpsys", "--skip", "meminfo,cpuinfo", NULL); 852 853 printf("========================================================\n"); 854 printf("== Checkins\n"); 855 printf("========================================================\n"); 856 857 run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL); 858 run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL); 859 run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL); 860 run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL); 861 run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL); 862 run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", NULL); 863 864 printf("========================================================\n"); 865 printf("== Running Application Activities\n"); 866 printf("========================================================\n"); 867 868 run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL); 869 870 printf("========================================================\n"); 871 printf("== Running Application Services\n"); 872 printf("========================================================\n"); 873 874 run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL); 875 876 printf("========================================================\n"); 877 printf("== Running Application Providers\n"); 878 printf("========================================================\n"); 879 880 run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL); 881 882 883 printf("========================================================\n"); 884 printf("== Final progress (pid %d): %d/%d (originally %d)\n", 885 getpid(), progress, weight_total, WEIGHT_TOTAL); 886 printf("========================================================\n"); 887 printf("== dumpstate: done\n"); 888 printf("========================================================\n"); 889} 890 891static void usage() { 892 fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q] [-B] [-P] [-R] [-V version]\n" 893 " -b: play sound file instead of vibrate, at beginning of job\n" 894 " -e: play sound file instead of vibrate, at end of job\n" 895 " -o: write to file (instead of stdout)\n" 896 " -d: append date to filename (requires -o)\n" 897 " -p: capture screenshot to filename.png (requires -o)\n" 898 " -z: generates zipped file (requires -o)\n" 899 " -s: write output to control socket (for init)\n" 900 " -q: disable vibrate\n" 901 " -B: send broadcast when finished (requires -o)\n" 902 " -P: send broadcast when started and update system properties on progress (requires -o and -B)\n" 903 " -R: take bugreport in remote mode (requires -o, -z, -d and -B, shouldn't be used with -P)\n" 904 " -V: sets the bugreport format version (valid values: %s)\n", 905 VERSION_DEFAULT.c_str()); 906} 907 908static void sigpipe_handler(int n) { 909 // don't complain to stderr or stdout 910 _exit(EXIT_FAILURE); 911} 912 913/* adds the temporary report to the existing .zip file, closes the .zip file, and removes the 914 temporary file. 915 */ 916static bool finish_zip_file(const std::string& bugreport_name, const std::string& bugreport_path, 917 time_t now) { 918 if (!add_zip_entry(bugreport_name, bugreport_path)) { 919 MYLOGE("Failed to add text entry to .zip file\n"); 920 return false; 921 } 922 if (!add_text_zip_entry("main_entry.txt", bugreport_name)) { 923 MYLOGE("Failed to add main_entry.txt to .zip file\n"); 924 return false; 925 } 926 927 int32_t err = zip_writer->Finish(); 928 if (err) { 929 MYLOGE("zip_writer->Finish(): %s\n", ZipWriter::ErrorCodeString(err)); 930 return false; 931 } 932 933 return true; 934} 935 936static std::string SHA256_file_hash(std::string filepath) { 937 ScopedFd fd(TEMP_FAILURE_RETRY(open(filepath.c_str(), O_RDONLY | O_NONBLOCK | O_CLOEXEC 938 | O_NOFOLLOW))); 939 if (fd.get() == -1) { 940 MYLOGE("open(%s): %s\n", filepath.c_str(), strerror(errno)); 941 return NULL; 942 } 943 944 SHA256_CTX ctx; 945 SHA256_init(&ctx); 946 947 std::vector<uint8_t> buffer(65536); 948 while (1) { 949 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd.get(), buffer.data(), buffer.size())); 950 if (bytes_read == 0) { 951 break; 952 } else if (bytes_read == -1) { 953 MYLOGE("read(%s): %s\n", filepath.c_str(), strerror(errno)); 954 return NULL; 955 } 956 957 SHA256_update(&ctx, buffer.data(), bytes_read); 958 } 959 960 uint8_t hash[SHA256_DIGEST_SIZE]; 961 memcpy(hash, SHA256_final(&ctx), SHA256_DIGEST_SIZE); 962 char hash_buffer[SHA256_DIGEST_SIZE * 2 + 1]; 963 for(size_t i = 0; i < SHA256_DIGEST_SIZE; i++) { 964 sprintf(hash_buffer + (i * 2), "%02x", hash[i]); 965 } 966 hash_buffer[sizeof(hash_buffer) - 1] = 0; 967 return std::string(hash_buffer); 968} 969 970/* switch to non-root user and group */ 971bool drop_root() { 972 /* ensure we will keep capabilities when we drop root */ 973 if (prctl(PR_SET_KEEPCAPS, 1) < 0) { 974 MYLOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); 975 return false; 976 } 977 978 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, 979 AID_MOUNT, AID_INET, AID_NET_BW_STATS, AID_READPROC }; 980 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 981 MYLOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); 982 return false; 983 } 984 if (setgid(AID_SHELL) != 0) { 985 MYLOGE("Unable to setgid, aborting: %s\n", strerror(errno)); 986 return false; 987 } 988 if (setuid(AID_SHELL) != 0) { 989 MYLOGE("Unable to setuid, aborting: %s\n", strerror(errno)); 990 return false; 991 } 992 993 struct __user_cap_header_struct capheader; 994 struct __user_cap_data_struct capdata[2]; 995 memset(&capheader, 0, sizeof(capheader)); 996 memset(&capdata, 0, sizeof(capdata)); 997 capheader.version = _LINUX_CAPABILITY_VERSION_3; 998 capheader.pid = 0; 999 1000 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); 1001 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); 1002 capdata[0].inheritable = 0; 1003 capdata[1].inheritable = 0; 1004 1005 if (capset(&capheader, &capdata[0]) < 0) { 1006 MYLOGE("capset failed: %s\n", strerror(errno)); 1007 return false; 1008 } 1009 1010 return true; 1011} 1012 1013int main(int argc, char *argv[]) { 1014 struct sigaction sigact; 1015 int do_add_date = 0; 1016 int do_zip_file = 0; 1017 int do_vibrate = 1; 1018 char* use_outfile = 0; 1019 int use_socket = 0; 1020 int do_fb = 0; 1021 int do_broadcast = 0; 1022 int do_early_screenshot = 0; 1023 int is_remote_mode = 0; 1024 std::string version = VERSION_DEFAULT; 1025 1026 now = time(NULL); 1027 1028 if (getuid() != 0) { 1029 // Old versions of the adb client would call the 1030 // dumpstate command directly. Newer clients 1031 // call /system/bin/bugreport instead. If we detect 1032 // we're being called incorrectly, then exec the 1033 // correct program. 1034 return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL); 1035 } 1036 1037 MYLOGI("begin\n"); 1038 1039 /* gets the sequential id */ 1040 char last_id[PROPERTY_VALUE_MAX]; 1041 property_get("dumpstate.last_id", last_id, "0"); 1042 id = strtoul(last_id, NULL, 10) + 1; 1043 sprintf(last_id, "%lu", id); 1044 property_set("dumpstate.last_id", last_id); 1045 MYLOGI("dumpstate id: %lu\n", id); 1046 1047 /* clear SIGPIPE handler */ 1048 memset(&sigact, 0, sizeof(sigact)); 1049 sigact.sa_handler = sigpipe_handler; 1050 sigaction(SIGPIPE, &sigact, NULL); 1051 1052 /* set as high priority, and protect from OOM killer */ 1053 setpriority(PRIO_PROCESS, 0, -20); 1054 FILE *oom_adj = fopen("/proc/self/oom_adj", "we"); 1055 if (oom_adj) { 1056 fputs("-17", oom_adj); 1057 fclose(oom_adj); 1058 } 1059 1060 /* parse arguments */ 1061 log_args("Dumpstate command line", argc, const_cast<const char **>(argv)); 1062 int c; 1063 while ((c = getopt(argc, argv, "dho:svqzpPBRV:")) != -1) { 1064 switch (c) { 1065 case 'd': do_add_date = 1; break; 1066 case 'z': do_zip_file = 1; break; 1067 case 'o': use_outfile = optarg; break; 1068 case 's': use_socket = 1; break; 1069 case 'v': break; // compatibility no-op 1070 case 'q': do_vibrate = 0; break; 1071 case 'p': do_fb = 1; break; 1072 case 'P': do_update_progress = 1; break; 1073 case 'R': is_remote_mode = 1; break; 1074 case 'B': do_broadcast = 1; break; 1075 case 'V': version = optarg; break; 1076 case '?': printf("\n"); 1077 case 'h': 1078 usage(); 1079 exit(1); 1080 } 1081 } 1082 1083 if ((do_zip_file || do_add_date || do_update_progress || do_broadcast) && !use_outfile) { 1084 usage(); 1085 exit(1); 1086 } 1087 1088 if (do_update_progress && !do_broadcast) { 1089 usage(); 1090 exit(1); 1091 } 1092 1093 if (is_remote_mode && (do_update_progress || !do_broadcast || !do_zip_file || !do_add_date)) { 1094 usage(); 1095 exit(1); 1096 } 1097 1098 if (version != VERSION_DEFAULT) { 1099 usage(); 1100 exit(1); 1101 } 1102 1103 MYLOGI("bugreport format version: %s\n", version.c_str()); 1104 1105 do_early_screenshot = do_update_progress; 1106 1107 // If we are going to use a socket, do it as early as possible 1108 // to avoid timeouts from bugreport. 1109 if (use_socket) { 1110 redirect_to_socket(stdout, "dumpstate"); 1111 } 1112 1113 /* full path of the directory where the bugreport files will be written */ 1114 std::string bugreport_dir; 1115 1116 /* full path of the temporary file containing the bugreport */ 1117 std::string tmp_path; 1118 1119 /* full path of the file containing the dumpstate logs*/ 1120 std::string log_path; 1121 1122 /* full path of the temporary file containing the screenshot (when requested) */ 1123 std::string screenshot_path; 1124 1125 /* base name (without suffix or extensions) of the bugreport files */ 1126 std::string base_name; 1127 1128 /* suffix of the bugreport files - it's typically the date (when invoked with -d), 1129 * although it could be changed by the user using a system property */ 1130 std::string suffix; 1131 1132 /* pointer to the actual path, be it zip or text */ 1133 std::string path; 1134 1135 /* pointer to the zipped file */ 1136 std::unique_ptr<FILE, int(*)(FILE*)> zip_file(NULL, fclose); 1137 1138 /* redirect output if needed */ 1139 bool is_redirecting = !use_socket && use_outfile; 1140 1141 if (is_redirecting) { 1142 bugreport_dir = dirname(use_outfile); 1143 base_name = basename(use_outfile); 1144 if (do_add_date) { 1145 char date[80]; 1146 strftime(date, sizeof(date), "%Y-%m-%d-%H-%M-%S", localtime(&now)); 1147 suffix = date; 1148 } else { 1149 suffix = "undated"; 1150 } 1151 if (do_fb) { 1152 // TODO: if dumpstate was an object, the paths could be internal variables and then 1153 // we could have a function to calculate the derived values, such as: 1154 // screenshot_path = GetPath(".png"); 1155 screenshot_path = bugreport_dir + "/" + base_name + "-" + suffix + ".png"; 1156 } 1157 tmp_path = bugreport_dir + "/" + base_name + "-" + suffix + ".tmp"; 1158 log_path = bugreport_dir + "/dumpstate_log-" + suffix + "-" 1159 + std::to_string(getpid()) + ".txt"; 1160 1161 MYLOGD("Bugreport dir: %s\n" 1162 "Base name: %s\n" 1163 "Suffix: %s\n" 1164 "Log path: %s\n" 1165 "Temporary path: %s\n" 1166 "Screenshot path: %s\n", 1167 bugreport_dir.c_str(), base_name.c_str(), suffix.c_str(), 1168 log_path.c_str(), tmp_path.c_str(), screenshot_path.c_str()); 1169 1170 if (do_zip_file) { 1171 MYLOGD("Creating initial .zip file\n"); 1172 path = bugreport_dir + "/" + base_name + "-" + suffix + ".zip"; 1173 create_parent_dirs(path.c_str()); 1174 zip_file.reset(fopen(path.c_str(), "wb")); 1175 if (!zip_file) { 1176 MYLOGE("fopen(%s, 'wb'): %s\n", path.c_str(), strerror(errno)); 1177 do_zip_file = 0; 1178 } else { 1179 zip_writer.reset(new ZipWriter(zip_file.get())); 1180 } 1181 add_text_zip_entry("version.txt", version); 1182 } 1183 1184 if (do_update_progress) { 1185 std::vector<std::string> am_args = { 1186 "--receiver-permission", "android.permission.DUMP", "--receiver-foreground", 1187 "--es", "android.intent.extra.NAME", suffix, 1188 "--ei", "android.intent.extra.ID", std::to_string(id), 1189 "--ei", "android.intent.extra.PID", std::to_string(getpid()), 1190 "--ei", "android.intent.extra.MAX", std::to_string(WEIGHT_TOTAL), 1191 }; 1192 send_broadcast("android.intent.action.BUGREPORT_STARTED", am_args); 1193 } 1194 } 1195 1196 /* read /proc/cmdline before dropping root */ 1197 FILE *cmdline = fopen("/proc/cmdline", "re"); 1198 if (cmdline) { 1199 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); 1200 fclose(cmdline); 1201 } 1202 1203 /* open the vibrator before dropping root */ 1204 std::unique_ptr<FILE, int(*)(FILE*)> vibrator(NULL, fclose); 1205 if (do_vibrate) { 1206 vibrator.reset(fopen("/sys/class/timed_output/vibrator/enable", "we")); 1207 if (vibrator) { 1208 vibrate(vibrator.get(), 150); 1209 } 1210 } 1211 1212 if (do_fb && do_early_screenshot) { 1213 if (screenshot_path.empty()) { 1214 // should not have happened 1215 MYLOGE("INTERNAL ERROR: skipping early screenshot because path was not set\n"); 1216 } else { 1217 MYLOGI("taking early screenshot\n"); 1218 take_screenshot(screenshot_path); 1219 MYLOGI("wrote screenshot: %s\n", screenshot_path.c_str()); 1220 if (chown(screenshot_path.c_str(), AID_SHELL, AID_SHELL)) { 1221 MYLOGE("Unable to change ownership of screenshot file %s: %s\n", 1222 screenshot_path.c_str(), strerror(errno)); 1223 } 1224 } 1225 } 1226 1227 if (do_zip_file) { 1228 if (chown(path.c_str(), AID_SHELL, AID_SHELL)) { 1229 MYLOGE("Unable to change ownership of zip file %s: %s\n", path.c_str(), strerror(errno)); 1230 } 1231 } 1232 1233 if (is_redirecting) { 1234 redirect_to_file(stderr, const_cast<char*>(log_path.c_str())); 1235 if (chown(log_path.c_str(), AID_SHELL, AID_SHELL)) { 1236 MYLOGE("Unable to change ownership of dumpstate log file %s: %s\n", 1237 log_path.c_str(), strerror(errno)); 1238 } 1239 /* TODO: rather than generating a text file now and zipping it later, 1240 it would be more efficient to redirect stdout to the zip entry 1241 directly, but the libziparchive doesn't support that option yet. */ 1242 redirect_to_file(stdout, const_cast<char*>(tmp_path.c_str())); 1243 if (chown(tmp_path.c_str(), AID_SHELL, AID_SHELL)) { 1244 MYLOGE("Unable to change ownership of temporary bugreport file %s: %s\n", 1245 tmp_path.c_str(), strerror(errno)); 1246 } 1247 } 1248 // NOTE: there should be no stdout output until now, otherwise it would break the header. 1249 // In particular, DurationReport objects should be created passing 'title, NULL', so their 1250 // duration is logged into MYLOG instead. 1251 print_header(version); 1252 1253 // Invoking the following dumpsys calls before dump_traces() to try and 1254 // keep the system stats as close to its initial state as possible. 1255 run_command("DUMPSYS MEMINFO", 30, SU_PATH, "shell", "dumpsys", "meminfo", "-a", NULL); 1256 run_command("DUMPSYS CPUINFO", 30, SU_PATH, "shell", "dumpsys", "cpuinfo", "-a", NULL); 1257 1258 /* collect stack traces from Dalvik and native processes (needs root) */ 1259 dump_traces_path = dump_traces(); 1260 1261 /* Get the tombstone fds, recovery files, and mount info here while we are running as root. */ 1262 get_tombstone_fds(tombstone_data); 1263 add_dir(RECOVERY_DIR, true); 1264 add_mountinfo(); 1265 1266 if (!drop_root()) { 1267 return -1; 1268 } 1269 1270 dumpstate(do_early_screenshot ? "": screenshot_path, version); 1271 1272 /* close output if needed */ 1273 if (is_redirecting) { 1274 fclose(stdout); 1275 } 1276 1277 /* rename or zip the (now complete) .tmp file to its final location */ 1278 if (use_outfile) { 1279 1280 /* check if user changed the suffix using system properties */ 1281 char key[PROPERTY_KEY_MAX]; 1282 char value[PROPERTY_VALUE_MAX]; 1283 sprintf(key, "dumpstate.%d.name", getpid()); 1284 property_get(key, value, ""); 1285 bool change_suffix= false; 1286 if (value[0]) { 1287 /* must whitelist which characters are allowed, otherwise it could cross directories */ 1288 std::regex valid_regex("^[-_a-zA-Z0-9]+$"); 1289 if (std::regex_match(value, valid_regex)) { 1290 change_suffix = true; 1291 } else { 1292 MYLOGE("invalid suffix provided by user: %s\n", value); 1293 } 1294 } 1295 if (change_suffix) { 1296 MYLOGI("changing suffix from %s to %s\n", suffix.c_str(), value); 1297 suffix = value; 1298 if (!screenshot_path.empty()) { 1299 std::string new_screenshot_path = 1300 bugreport_dir + "/" + base_name + "-" + suffix + ".png"; 1301 if (rename(screenshot_path.c_str(), new_screenshot_path.c_str())) { 1302 MYLOGE("rename(%s, %s): %s\n", screenshot_path.c_str(), 1303 new_screenshot_path.c_str(), strerror(errno)); 1304 } else { 1305 screenshot_path = new_screenshot_path; 1306 } 1307 } 1308 } 1309 1310 bool do_text_file = true; 1311 if (do_zip_file) { 1312 std::string entry_name = base_name + "-" + suffix + ".txt"; 1313 MYLOGD("Adding main entry (%s) to .zip bugreport\n", entry_name.c_str()); 1314 if (!finish_zip_file(entry_name, tmp_path, now)) { 1315 MYLOGE("Failed to finish zip file; sending text bugreport instead\n"); 1316 do_text_file = true; 1317 } else { 1318 do_text_file = false; 1319 // Since zip file is already created, it needs to be renamed. 1320 std::string new_path = bugreport_dir + "/" + base_name + "-" + suffix + ".zip"; 1321 if (path != new_path) { 1322 MYLOGD("Renaming zip file from %s to %s\n", path.c_str(), new_path.c_str()); 1323 if (rename(path.c_str(), new_path.c_str())) { 1324 MYLOGE("rename(%s, %s): %s\n", path.c_str(), 1325 new_path.c_str(), strerror(errno)); 1326 } else { 1327 path = new_path; 1328 } 1329 } 1330 } 1331 } 1332 if (do_text_file) { 1333 path = bugreport_dir + "/" + base_name + "-" + suffix + ".txt"; 1334 MYLOGD("Generating .txt bugreport at %s from %s\n", path.c_str(), tmp_path.c_str()); 1335 if (rename(tmp_path.c_str(), path.c_str())) { 1336 MYLOGE("rename(%s, %s): %s\n", tmp_path.c_str(), path.c_str(), strerror(errno)); 1337 path.clear(); 1338 } 1339 } 1340 } 1341 1342 /* vibrate a few but shortly times to let user know it's finished */ 1343 if (vibrator) { 1344 for (int i = 0; i < 3; i++) { 1345 vibrate(vibrator.get(), 75); 1346 usleep((75 + 50) * 1000); 1347 } 1348 } 1349 1350 /* tell activity manager we're done */ 1351 if (do_broadcast) { 1352 if (!path.empty()) { 1353 MYLOGI("Final bugreport path: %s\n", path.c_str()); 1354 std::vector<std::string> am_args = { 1355 "--receiver-permission", "android.permission.DUMP", "--receiver-foreground", 1356 "--ei", "android.intent.extra.ID", std::to_string(id), 1357 "--ei", "android.intent.extra.PID", std::to_string(getpid()), 1358 "--ei", "android.intent.extra.MAX", std::to_string(weight_total), 1359 "--es", "android.intent.extra.BUGREPORT", path, 1360 "--es", "android.intent.extra.DUMPSTATE_LOG", log_path 1361 }; 1362 if (do_fb) { 1363 am_args.push_back("--es"); 1364 am_args.push_back("android.intent.extra.SCREENSHOT"); 1365 am_args.push_back(screenshot_path); 1366 } 1367 if (is_remote_mode) { 1368 am_args.push_back("--es"); 1369 am_args.push_back("android.intent.extra.REMOTE_BUGREPORT_HASH"); 1370 am_args.push_back(SHA256_file_hash(path)); 1371 send_broadcast("android.intent.action.REMOTE_BUGREPORT_FINISHED", am_args); 1372 } else { 1373 send_broadcast("android.intent.action.BUGREPORT_FINISHED", am_args); 1374 } 1375 } else { 1376 MYLOGE("Skipping finished broadcast because bugreport could not be generated\n"); 1377 } 1378 } 1379 1380 MYLOGD("Final progress: %d/%d (originally %d)\n", progress, weight_total, WEIGHT_TOTAL); 1381 MYLOGI("done\n"); 1382 1383 if (is_redirecting) { 1384 fclose(stderr); 1385 } 1386 1387 return 0; 1388} 1389