dumpstate.cpp revision 8fecfdda012928bc2fe6d0e66fd4a4c912946254
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-dev1"; 94// TODO: remove before final N build 95static std::string VERSION_DUMPSYS_SPLIT = "v1-dev1-dumpsys-split"; 96 97/* gets the tombstone data, according to the bugreport type: if zipped gets all tombstones, 98 * otherwise gets just those modified in the last half an hour. */ 99static void get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES]) { 100 time_t thirty_minutes_ago = now - 60*30; 101 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 102 snprintf(data[i].name, sizeof(data[i].name), "%s%02zu", TOMBSTONE_FILE_PREFIX, i); 103 int fd = TEMP_FAILURE_RETRY(open(data[i].name, 104 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 105 struct stat st; 106 if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) && 107 (zip_writer || (time_t) st.st_mtime >= thirty_minutes_ago)) { 108 data[i].fd = fd; 109 } else { 110 close(fd); 111 data[i].fd = -1; 112 } 113 } 114} 115 116// for_each_pid() callback to get mount info about a process. 117void do_mountinfo(int pid, const char *name) { 118 char path[PATH_MAX]; 119 120 // Gets the the content of the /proc/PID/ns/mnt link, so only unique mount points 121 // are added. 122 sprintf(path, "/proc/%d/ns/mnt", pid); 123 char linkname[PATH_MAX]; 124 ssize_t r = readlink(path, linkname, PATH_MAX); 125 if (r == -1) { 126 MYLOGE("Unable to read link for %s: %s\n", path, strerror(errno)); 127 return; 128 } 129 linkname[r] = '\0'; 130 131 if (mount_points.find(linkname) == mount_points.end()) { 132 // First time this mount point was found: add it 133 sprintf(path, "/proc/%d/mountinfo", pid); 134 if (add_zip_entry(ZIP_ROOT_DIR + path, path)) { 135 mount_points.insert(linkname); 136 } else { 137 MYLOGE("Unable to add mountinfo %s to zip file\n", path); 138 } 139 } 140} 141 142void add_mountinfo() { 143 if (!zip_writer) return; 144 const char *title = "MOUNT INFO"; 145 mount_points.clear(); 146 DurationReporter duration_reporter(title, NULL); 147 for_each_pid(do_mountinfo, NULL); 148 MYLOGD("%s: %lu entries added to zip file\n", title, mount_points.size()); 149} 150 151static void dump_dev_files(const char *title, const char *driverpath, const char *filename) 152{ 153 DIR *d; 154 struct dirent *de; 155 char path[PATH_MAX]; 156 157 d = opendir(driverpath); 158 if (d == NULL) { 159 return; 160 } 161 162 while ((de = readdir(d))) { 163 if (de->d_type != DT_LNK) { 164 continue; 165 } 166 snprintf(path, sizeof(path), "%s/%s/%s", driverpath, de->d_name, filename); 167 dump_file(title, path); 168 } 169 170 closedir(d); 171} 172 173static bool skip_not_stat(const char *path) { 174 static const char stat[] = "/stat"; 175 size_t len = strlen(path); 176 if (path[len - 1] == '/') { /* Directory? */ 177 return false; 178 } 179 return strcmp(path + len - sizeof(stat) + 1, stat); /* .../stat? */ 180} 181 182static bool skip_none(const char *path) { 183 return false; 184} 185 186static const char mmcblk0[] = "/sys/block/mmcblk0/"; 187unsigned long worst_write_perf = 20000; /* in KB/s */ 188 189// 190// stat offsets 191// Name units description 192// ---- ----- ----------- 193// read I/Os requests number of read I/Os processed 194#define __STAT_READ_IOS 0 195// read merges requests number of read I/Os merged with in-queue I/O 196#define __STAT_READ_MERGES 1 197// read sectors sectors number of sectors read 198#define __STAT_READ_SECTORS 2 199// read ticks milliseconds total wait time for read requests 200#define __STAT_READ_TICKS 3 201// write I/Os requests number of write I/Os processed 202#define __STAT_WRITE_IOS 4 203// write merges requests number of write I/Os merged with in-queue I/O 204#define __STAT_WRITE_MERGES 5 205// write sectors sectors number of sectors written 206#define __STAT_WRITE_SECTORS 6 207// write ticks milliseconds total wait time for write requests 208#define __STAT_WRITE_TICKS 7 209// in_flight requests number of I/Os currently in flight 210#define __STAT_IN_FLIGHT 8 211// io_ticks milliseconds total time this block device has been active 212#define __STAT_IO_TICKS 9 213// time_in_queue milliseconds total wait time for all requests 214#define __STAT_IN_QUEUE 10 215#define __STAT_NUMBER_FIELD 11 216// 217// read I/Os, write I/Os 218// ===================== 219// 220// These values increment when an I/O request completes. 221// 222// read merges, write merges 223// ========================= 224// 225// These values increment when an I/O request is merged with an 226// already-queued I/O request. 227// 228// read sectors, write sectors 229// =========================== 230// 231// These values count the number of sectors read from or written to this 232// block device. The "sectors" in question are the standard UNIX 512-byte 233// sectors, not any device- or filesystem-specific block size. The 234// counters are incremented when the I/O completes. 235#define SECTOR_SIZE 512 236// 237// read ticks, write ticks 238// ======================= 239// 240// These values count the number of milliseconds that I/O requests have 241// waited on this block device. If there are multiple I/O requests waiting, 242// these values will increase at a rate greater than 1000/second; for 243// example, if 60 read requests wait for an average of 30 ms, the read_ticks 244// field will increase by 60*30 = 1800. 245// 246// in_flight 247// ========= 248// 249// This value counts the number of I/O requests that have been issued to 250// the device driver but have not yet completed. It does not include I/O 251// requests that are in the queue but not yet issued to the device driver. 252// 253// io_ticks 254// ======== 255// 256// This value counts the number of milliseconds during which the device has 257// had I/O requests queued. 258// 259// time_in_queue 260// ============= 261// 262// This value counts the number of milliseconds that I/O requests have waited 263// on this block device. If there are multiple I/O requests waiting, this 264// value will increase as the product of the number of milliseconds times the 265// number of requests waiting (see "read ticks" above for an example). 266#define S_TO_MS 1000 267// 268 269static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) { 270 unsigned long long fields[__STAT_NUMBER_FIELD]; 271 bool z; 272 char *cp, *buffer = NULL; 273 size_t i = 0; 274 FILE *fp = fdopen(fd, "rb"); 275 getline(&buffer, &i, fp); 276 fclose(fp); 277 if (!buffer) { 278 return -errno; 279 } 280 i = strlen(buffer); 281 while ((i > 0) && (buffer[i - 1] == '\n')) { 282 buffer[--i] = '\0'; 283 } 284 if (!*buffer) { 285 free(buffer); 286 return 0; 287 } 288 z = true; 289 for (cp = buffer, i = 0; i < (sizeof(fields) / sizeof(fields[0])); ++i) { 290 fields[i] = strtoull(cp, &cp, 10); 291 if (fields[i] != 0) { 292 z = false; 293 } 294 } 295 if (z) { /* never accessed */ 296 free(buffer); 297 return 0; 298 } 299 300 if (!strncmp(path, mmcblk0, sizeof(mmcblk0) - 1)) { 301 path += sizeof(mmcblk0) - 1; 302 } 303 304 printf("%s: %s\n", path, buffer); 305 free(buffer); 306 307 if (fields[__STAT_IO_TICKS]) { 308 unsigned long read_perf = 0; 309 unsigned long read_ios = 0; 310 if (fields[__STAT_READ_TICKS]) { 311 unsigned long long divisor = fields[__STAT_READ_TICKS] 312 * fields[__STAT_IO_TICKS]; 313 read_perf = ((unsigned long long)SECTOR_SIZE 314 * fields[__STAT_READ_SECTORS] 315 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 316 / divisor; 317 read_ios = ((unsigned long long)S_TO_MS * fields[__STAT_READ_IOS] 318 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 319 / divisor; 320 } 321 322 unsigned long write_perf = 0; 323 unsigned long write_ios = 0; 324 if (fields[__STAT_WRITE_TICKS]) { 325 unsigned long long divisor = fields[__STAT_WRITE_TICKS] 326 * fields[__STAT_IO_TICKS]; 327 write_perf = ((unsigned long long)SECTOR_SIZE 328 * fields[__STAT_WRITE_SECTORS] 329 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 330 / divisor; 331 write_ios = ((unsigned long long)S_TO_MS * fields[__STAT_WRITE_IOS] 332 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 333 / divisor; 334 } 335 336 unsigned queue = (fields[__STAT_IN_QUEUE] 337 + (fields[__STAT_IO_TICKS] >> 1)) 338 / fields[__STAT_IO_TICKS]; 339 340 if (!write_perf && !write_ios) { 341 printf("%s: perf(ios) rd: %luKB/s(%lu/s) q: %u\n", 342 path, read_perf, read_ios, queue); 343 } else { 344 printf("%s: perf(ios) rd: %luKB/s(%lu/s) wr: %luKB/s(%lu/s) q: %u\n", 345 path, read_perf, read_ios, write_perf, write_ios, queue); 346 } 347 348 /* bugreport timeout factor adjustment */ 349 if ((write_perf > 1) && (write_perf < worst_write_perf)) { 350 worst_write_perf = write_perf; 351 } 352 } 353 return 0; 354} 355 356/* Copied policy from system/core/logd/LogBuffer.cpp */ 357 358#define LOG_BUFFER_SIZE (256 * 1024) 359#define LOG_BUFFER_MIN_SIZE (64 * 1024UL) 360#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL) 361 362static bool valid_size(unsigned long value) { 363 if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) { 364 return false; 365 } 366 367 long pages = sysconf(_SC_PHYS_PAGES); 368 if (pages < 1) { 369 return true; 370 } 371 372 long pagesize = sysconf(_SC_PAGESIZE); 373 if (pagesize <= 1) { 374 pagesize = PAGE_SIZE; 375 } 376 377 // maximum memory impact a somewhat arbitrary ~3% 378 pages = (pages + 31) / 32; 379 unsigned long maximum = pages * pagesize; 380 381 if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) { 382 return true; 383 } 384 385 return value <= maximum; 386} 387 388static unsigned long property_get_size(const char *key) { 389 unsigned long value; 390 char *cp, property[PROPERTY_VALUE_MAX]; 391 392 property_get(key, property, ""); 393 value = strtoul(property, &cp, 10); 394 395 switch(*cp) { 396 case 'm': 397 case 'M': 398 value *= 1024; 399 /* FALLTHRU */ 400 case 'k': 401 case 'K': 402 value *= 1024; 403 /* FALLTHRU */ 404 case '\0': 405 break; 406 407 default: 408 value = 0; 409 } 410 411 if (!valid_size(value)) { 412 value = 0; 413 } 414 415 return value; 416} 417 418/* timeout in ms */ 419static unsigned long logcat_timeout(const char *name) { 420 static const char global_tuneable[] = "persist.logd.size"; // Settings App 421 static const char global_default[] = "ro.logd.size"; // BoardConfig.mk 422 char key[PROP_NAME_MAX]; 423 unsigned long property_size, default_size; 424 425 default_size = property_get_size(global_tuneable); 426 if (!default_size) { 427 default_size = property_get_size(global_default); 428 } 429 430 snprintf(key, sizeof(key), "%s.%s", global_tuneable, name); 431 property_size = property_get_size(key); 432 433 if (!property_size) { 434 snprintf(key, sizeof(key), "%s.%s", global_default, name); 435 property_size = property_get_size(key); 436 } 437 438 if (!property_size) { 439 property_size = default_size; 440 } 441 442 if (!property_size) { 443 property_size = LOG_BUFFER_SIZE; 444 } 445 446 /* Engineering margin is ten-fold our guess */ 447 return 10 * (property_size + worst_write_perf) / worst_write_perf; 448} 449 450/* End copy from system/core/logd/LogBuffer.cpp */ 451 452/* dumps the current system state to stdout */ 453static void print_header(std::string version) { 454 char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX]; 455 char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX]; 456 char network[PROPERTY_VALUE_MAX], date[80]; 457 458 property_get("ro.build.display.id", build, "(unknown)"); 459 property_get("ro.build.fingerprint", fingerprint, "(unknown)"); 460 property_get("ro.build.type", build_type, "(unknown)"); 461 property_get("ro.baseband", radio, "(unknown)"); 462 property_get("ro.bootloader", bootloader, "(unknown)"); 463 property_get("gsm.operator.alpha", network, "(unknown)"); 464 strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&now)); 465 466 printf("========================================================\n"); 467 printf("== dumpstate: %s\n", date); 468 printf("========================================================\n"); 469 470 printf("\n"); 471 printf("Build: %s\n", build); 472 printf("Build fingerprint: '%s'\n", fingerprint); /* format is important for other tools */ 473 printf("Bootloader: %s\n", bootloader); 474 printf("Radio: %s\n", radio); 475 printf("Network: %s\n", network); 476 477 printf("Kernel: "); 478 dump_file(NULL, "/proc/version"); 479 printf("Command line: %s\n", strtok(cmdline_buf, "\n")); 480 printf("Bugreport format version: %s\n", version.c_str()); 481 printf("Dumpstate info: id=%lu pid=%d\n", id, getpid()); 482 printf("\n"); 483} 484 485/* adds a new entry to the existing zip file. */ 486static bool add_zip_entry_from_fd(const std::string& entry_name, int fd) { 487 if (!zip_writer) { 488 MYLOGD("Not adding zip entry %s from fd because zip_writer is not set\n", entry_name.c_str()); 489 return false; 490 } 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 DurationReporter duration_reporter(dir, NULL); 548 dump_files(NULL, dir, recursive ? skip_none : is_dir, _add_file_from_fd); 549} 550 551/* adds a text entry entry to the existing zip file. */ 552static bool add_text_zip_entry(const std::string& entry_name, const std::string& content) { 553 if (!zip_writer) { 554 MYLOGD("Not adding text zip entry %s because zip_writer is not set\n", entry_name.c_str()); 555 return false; 556 } 557 MYLOGD("Adding zip text entry %s\n", entry_name.c_str()); 558 int32_t err = zip_writer->StartEntryWithTime(entry_name.c_str(), ZipWriter::kCompress, now); 559 if (err) { 560 MYLOGE("zip_writer->StartEntryWithTime(%s): %s\n", entry_name.c_str(), 561 ZipWriter::ErrorCodeString(err)); 562 return false; 563 } 564 565 err = zip_writer->WriteBytes(content.c_str(), content.length()); 566 if (err) { 567 MYLOGE("zip_writer->WriteBytes(%s): %s\n", entry_name.c_str(), 568 ZipWriter::ErrorCodeString(err)); 569 return false; 570 } 571 572 err = zip_writer->FinishEntry(); 573 if (err) { 574 MYLOGE("zip_writer->FinishEntry(): %s\n", ZipWriter::ErrorCodeString(err)); 575 return false; 576 } 577 578 return true; 579} 580 581static void dumpstate(const std::string& screenshot_path) { 582 DurationReporter duration_reporter("DUMPSTATE"); 583 unsigned long timeout; 584 585 dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version"); 586 run_command("UPTIME", 10, "uptime", NULL); 587 dump_files("UPTIME MMC PERF", mmcblk0, skip_not_stat, dump_stat_from_fd); 588 dump_emmc_ecsd("/d/mmc0/mmc0:0001/ext_csd"); 589 dump_file("MEMORY INFO", "/proc/meminfo"); 590 run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-H", NULL); 591 run_command("PROCRANK", 20, SU_PATH, "root", "procrank", NULL); 592 dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); 593 dump_file("VMALLOC INFO", "/proc/vmallocinfo"); 594 dump_file("SLAB INFO", "/proc/slabinfo"); 595 dump_file("ZONEINFO", "/proc/zoneinfo"); 596 dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); 597 dump_file("BUDDYINFO", "/proc/buddyinfo"); 598 dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); 599 600 dump_file("KERNEL WAKELOCKS", "/proc/wakelocks"); 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("ROUTE", 10, "route", NULL); 609 run_command("PRINTENV", 10, "printenv", NULL); 610 run_command("NETSTAT", 10, "netstat", NULL); 611 run_command("LSMOD", 10, "lsmod", NULL); 612 613 do_dmesg(); 614 615 run_command("LIST OF OPEN FILES", 10, SU_PATH, "root", "lsof", NULL); 616 for_each_pid(do_showmap, "SMAPS OF ALL PROCESSES"); 617 for_each_tid(show_wchan, "BLOCKED PROCESS WAIT-CHANNELS"); 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", 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 (%s or %s)\n", 905 VERSION_DEFAULT.c_str(), VERSION_DUMPSYS_SPLIT.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 int c; 1062 while ((c = getopt(argc, argv, "dho:svqzpPBRV:")) != -1) { 1063 switch (c) { 1064 case 'd': do_add_date = 1; break; 1065 case 'z': do_zip_file = 1; break; 1066 case 'o': use_outfile = optarg; break; 1067 case 's': use_socket = 1; break; 1068 case 'v': break; // compatibility no-op 1069 case 'q': do_vibrate = 0; break; 1070 case 'p': do_fb = 1; break; 1071 case 'P': do_update_progress = 1; break; 1072 case 'R': is_remote_mode = 1; break; 1073 case 'B': do_broadcast = 1; break; 1074 case 'V': version = optarg; break; 1075 case '?': printf("\n"); 1076 case 'h': 1077 usage(); 1078 exit(1); 1079 } 1080 } 1081 1082 if ((do_zip_file || do_add_date || do_update_progress || do_broadcast) && !use_outfile) { 1083 usage(); 1084 exit(1); 1085 } 1086 1087 if (do_update_progress && !do_broadcast) { 1088 usage(); 1089 exit(1); 1090 } 1091 1092 if (is_remote_mode && (do_update_progress || !do_broadcast || !do_zip_file || !do_add_date)) { 1093 usage(); 1094 exit(1); 1095 } 1096 1097 if (version != VERSION_DEFAULT && version != VERSION_DUMPSYS_SPLIT) { 1098 usage(); 1099 exit(1); 1100 } 1101 1102 MYLOGI("bugreport format version: %s\n", version.c_str()); 1103 1104 do_early_screenshot = do_update_progress; 1105 1106 // If we are going to use a socket, do it as early as possible 1107 // to avoid timeouts from bugreport. 1108 if (use_socket) { 1109 redirect_to_socket(stdout, "dumpstate"); 1110 } 1111 1112 /* full path of the directory where the bugreport files will be written */ 1113 std::string bugreport_dir; 1114 1115 /* full path of the temporary file containing the bugreport */ 1116 std::string tmp_path; 1117 1118 /* full path of the file containing the dumpstate logs*/ 1119 std::string log_path; 1120 1121 /* full path of the temporary file containing the screenshot (when requested) */ 1122 std::string screenshot_path; 1123 1124 /* base name (without suffix or extensions) of the bugreport files */ 1125 std::string base_name; 1126 1127 /* suffix of the bugreport files - it's typically the date (when invoked with -d), 1128 * although it could be changed by the user using a system property */ 1129 std::string suffix; 1130 1131 /* pointer to the actual path, be it zip or text */ 1132 std::string path; 1133 1134 /* pointer to the zipped file */ 1135 std::unique_ptr<FILE, int(*)(FILE*)> zip_file(NULL, fclose); 1136 1137 /* redirect output if needed */ 1138 bool is_redirecting = !use_socket && use_outfile; 1139 1140 if (is_redirecting) { 1141 bugreport_dir = dirname(use_outfile); 1142 base_name = basename(use_outfile); 1143 if (do_add_date) { 1144 char date[80]; 1145 strftime(date, sizeof(date), "%Y-%m-%d-%H-%M-%S", localtime(&now)); 1146 suffix = date; 1147 } else { 1148 suffix = "undated"; 1149 } 1150 if (do_fb) { 1151 // TODO: if dumpstate was an object, the paths could be internal variables and then 1152 // we could have a function to calculate the derived values, such as: 1153 // screenshot_path = GetPath(".png"); 1154 screenshot_path = bugreport_dir + "/" + base_name + "-" + suffix + ".png"; 1155 } 1156 tmp_path = bugreport_dir + "/" + base_name + "-" + suffix + ".tmp"; 1157 log_path = bugreport_dir + "/dumpstate_log-" + suffix + "-" 1158 + std::to_string(getpid()) + ".txt"; 1159 1160 MYLOGD("Bugreport dir: %s\n" 1161 "Base name: %s\n" 1162 "Suffix: %s\n" 1163 "Log path: %s\n" 1164 "Temporary path: %s\n" 1165 "Screenshot path: %s\n", 1166 bugreport_dir.c_str(), base_name.c_str(), suffix.c_str(), 1167 log_path.c_str(), tmp_path.c_str(), screenshot_path.c_str()); 1168 1169 if (do_zip_file) { 1170 MYLOGD("Creating initial .zip file\n"); 1171 path = bugreport_dir + "/" + base_name + "-" + suffix + ".zip"; 1172 create_parent_dirs(path.c_str()); 1173 zip_file.reset(fopen(path.c_str(), "wb")); 1174 if (!zip_file) { 1175 MYLOGE("fopen(%s, 'wb'): %s\n", path.c_str(), strerror(errno)); 1176 do_zip_file = 0; 1177 } else { 1178 zip_writer.reset(new ZipWriter(zip_file.get())); 1179 } 1180 add_text_zip_entry("version.txt", version); 1181 } 1182 1183 if (do_update_progress) { 1184 std::vector<std::string> am_args = { 1185 "--receiver-permission", "android.permission.DUMP", 1186 "--es", "android.intent.extra.NAME", suffix, 1187 "--ei", "android.intent.extra.ID", std::to_string(id), 1188 "--ei", "android.intent.extra.PID", std::to_string(getpid()), 1189 "--ei", "android.intent.extra.MAX", std::to_string(WEIGHT_TOTAL), 1190 }; 1191 send_broadcast("android.intent.action.BUGREPORT_STARTED", am_args); 1192 } 1193 } 1194 1195 /* read /proc/cmdline before dropping root */ 1196 FILE *cmdline = fopen("/proc/cmdline", "re"); 1197 if (cmdline) { 1198 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); 1199 fclose(cmdline); 1200 } 1201 1202 /* open the vibrator before dropping root */ 1203 std::unique_ptr<FILE, int(*)(FILE*)> vibrator(NULL, fclose); 1204 if (do_vibrate) { 1205 vibrator.reset(fopen("/sys/class/timed_output/vibrator/enable", "we")); 1206 if (vibrator) { 1207 vibrate(vibrator.get(), 150); 1208 } 1209 } 1210 1211 if (do_fb && do_early_screenshot) { 1212 if (screenshot_path.empty()) { 1213 // should not have happened 1214 MYLOGE("INTERNAL ERROR: skipping early screenshot because path was not set\n"); 1215 } else { 1216 MYLOGI("taking early screenshot\n"); 1217 take_screenshot(screenshot_path); 1218 MYLOGI("wrote screenshot: %s\n", screenshot_path.c_str()); 1219 if (chown(screenshot_path.c_str(), AID_SHELL, AID_SHELL)) { 1220 MYLOGE("Unable to change ownership of screenshot file %s: %s\n", 1221 screenshot_path.c_str(), strerror(errno)); 1222 } 1223 } 1224 } 1225 1226 if (do_zip_file) { 1227 if (chown(path.c_str(), AID_SHELL, AID_SHELL)) { 1228 MYLOGE("Unable to change ownership of zip file %s: %s\n", path.c_str(), strerror(errno)); 1229 } 1230 } 1231 1232 /* collect stack traces from Dalvik and native processes (needs root) */ 1233 dump_traces_path = dump_traces(); 1234 1235 /* Get the tombstone fds, recovery files, and mount info here while we are running as root. */ 1236 get_tombstone_fds(tombstone_data); 1237 add_dir(RECOVERY_DIR, true); 1238 add_mountinfo(); 1239 1240 if (!drop_root()) { 1241 return -1; 1242 } 1243 1244 if (is_redirecting) { 1245 redirect_to_file(stderr, const_cast<char*>(log_path.c_str())); 1246 /* TODO: rather than generating a text file now and zipping it later, 1247 it would be more efficient to redirect stdout to the zip entry 1248 directly, but the libziparchive doesn't support that option yet. */ 1249 redirect_to_file(stdout, const_cast<char*>(tmp_path.c_str())); 1250 } 1251 // NOTE: there should be no stdout output until now, otherwise it would break the header. 1252 // In particular, DurationReport objects should be created passing 'title, NULL', so their 1253 // duration is logged into MYLOG instead. 1254 print_header(version); 1255 1256 dumpstate(do_early_screenshot ? "": screenshot_path); 1257 1258 /* done */ 1259 if (vibrator) { 1260 for (int i = 0; i < 3; i++) { 1261 vibrate(vibrator.get(), 75); 1262 usleep((75 + 50) * 1000); 1263 } 1264 } 1265 1266 /* close output if needed */ 1267 if (is_redirecting) { 1268 fclose(stdout); 1269 fclose(stderr); 1270 } 1271 1272 /* rename or zip the (now complete) .tmp file to its final location */ 1273 if (use_outfile) { 1274 1275 /* check if user changed the suffix using system properties */ 1276 char key[PROPERTY_KEY_MAX]; 1277 char value[PROPERTY_VALUE_MAX]; 1278 sprintf(key, "dumpstate.%d.name", getpid()); 1279 property_get(key, value, ""); 1280 bool change_suffix= false; 1281 if (value[0]) { 1282 /* must whitelist which characters are allowed, otherwise it could cross directories */ 1283 std::regex valid_regex("^[-_a-zA-Z0-9]+$"); 1284 if (std::regex_match(value, valid_regex)) { 1285 change_suffix = true; 1286 } else { 1287 MYLOGE("invalid suffix provided by user: %s\n", value); 1288 } 1289 } 1290 if (change_suffix) { 1291 MYLOGI("changing suffix from %s to %s\n", suffix.c_str(), value); 1292 suffix = value; 1293 if (!screenshot_path.empty()) { 1294 std::string new_screenshot_path = 1295 bugreport_dir + "/" + base_name + "-" + suffix + ".png"; 1296 if (rename(screenshot_path.c_str(), new_screenshot_path.c_str())) { 1297 MYLOGE("rename(%s, %s): %s\n", screenshot_path.c_str(), 1298 new_screenshot_path.c_str(), strerror(errno)); 1299 } else { 1300 screenshot_path = new_screenshot_path; 1301 } 1302 } 1303 } 1304 1305 bool do_text_file = true; 1306 if (do_zip_file) { 1307 MYLOGD("Adding text entry to .zip bugreport\n"); 1308 if (!finish_zip_file(base_name + "-" + suffix + ".txt", tmp_path, now)) { 1309 MYLOGE("Failed to finish zip file; sending text bugreport instead\n"); 1310 do_text_file = true; 1311 } else { 1312 do_text_file = false; 1313 } 1314 } 1315 if (do_text_file) { 1316 MYLOGD("Generating .txt bugreport\n"); 1317 path = bugreport_dir + "/" + base_name + "-" + suffix + ".txt"; 1318 if (rename(tmp_path.c_str(), path.c_str())) { 1319 MYLOGE("rename(%s, %s): %s\n", tmp_path.c_str(), path.c_str(), strerror(errno)); 1320 path.clear(); 1321 } 1322 } 1323 } 1324 1325 /* tell activity manager we're done */ 1326 if (do_broadcast) { 1327 if (!path.empty()) { 1328 MYLOGI("Final bugreport path: %s\n", path.c_str()); 1329 std::vector<std::string> am_args = { 1330 "--receiver-permission", "android.permission.DUMP", "--receiver-foreground", 1331 "--ei", "android.intent.extra.ID", std::to_string(id), 1332 "--ei", "android.intent.extra.PID", std::to_string(getpid()), 1333 "--es", "android.intent.extra.BUGREPORT", path, 1334 "--es", "android.intent.extra.DUMPSTATE_LOG", log_path 1335 }; 1336 if (do_fb) { 1337 am_args.push_back("--es"); 1338 am_args.push_back("android.intent.extra.SCREENSHOT"); 1339 am_args.push_back(screenshot_path); 1340 } 1341 if (is_remote_mode) { 1342 am_args.push_back("--es"); 1343 am_args.push_back("android.intent.extra.REMOTE_BUGREPORT_HASH"); 1344 am_args.push_back(SHA256_file_hash(path)); 1345 send_broadcast("android.intent.action.REMOTE_BUGREPORT_FINISHED", am_args); 1346 } else { 1347 send_broadcast("android.intent.action.BUGREPORT_FINISHED", am_args); 1348 } 1349 } else { 1350 MYLOGE("Skipping finished broadcast because bugreport could not be generated\n"); 1351 } 1352 } 1353 1354 MYLOGD("Final progress: %d/%d (originally %d)\n", progress, weight_total, WEIGHT_TOTAL); 1355 MYLOGI("done\n"); 1356 1357 return 0; 1358} 1359