dumpstate.cpp revision ea160d134cd46c246859072f90ab5dd05ada6364
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/prctl.h> 31#include <sys/resource.h> 32#include <sys/stat.h> 33#include <sys/time.h> 34#include <sys/wait.h> 35#include <unistd.h> 36 37#include <android-base/stringprintf.h> 38#include <cutils/properties.h> 39 40#include "private/android_filesystem_config.h" 41 42#define LOG_TAG "dumpstate" 43#include <cutils/log.h> 44 45#include "dumpstate.h" 46#include "ScopedFd.h" 47#include "ziparchive/zip_writer.h" 48 49#include "mincrypt/sha256.h" 50 51using android::base::StringPrintf; 52 53/* read before root is shed */ 54static char cmdline_buf[16384] = "(unknown)"; 55static const char *dump_traces_path = NULL; 56 57// TODO: should be part of dumpstate object 58static unsigned long id; 59static char build_type[PROPERTY_VALUE_MAX]; 60static time_t now; 61static std::unique_ptr<ZipWriter> zip_writer; 62static std::set<std::string> mount_points; 63void add_mountinfo(); 64static bool add_zip_entry(const std::string& entry_name, const std::string& entry_path); 65static bool add_zip_entry_from_fd(const std::string& entry_name, int fd); 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-dev3"; 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 void dump_systrace() { 172 if (!zip_writer) { 173 MYLOGD("Not dumping systrace because zip_writer is not set\n"); 174 return; 175 } 176 const char* path = "/sys/kernel/debug/tracing/tracing_on"; 177 long int is_tracing; 178 if (read_file_as_long(path, &is_tracing)) { 179 return; // error already logged 180 } 181 if (is_tracing <= 0) { 182 MYLOGD("Skipping systrace because '%s' content is '%ld'\n", path, is_tracing); 183 return; 184 } 185 186 DurationReporter duration_reporter("SYSTRACE", nullptr); 187 // systrace output can be many MBs, so we need to redirect its stdout straight to the zip file 188 // by forking and using a pipe. 189 int pipefd[2]; 190 pipe(pipefd); 191 if (fork() == 0) { 192 close(pipefd[0]); // close reading end in the child 193 dup2(pipefd[1], STDOUT_FILENO); // send stdout to the pipe 194 dup2(pipefd[1], STDERR_FILENO); // send stderr to the pipe 195 close(pipefd[1]); // this descriptor is no longer needed 196 197 // TODO: ideally it should use run_command, but it doesn't work well with pipes. 198 // The drawback of calling execl directly is that we're not timing out if it hangs. 199 MYLOGD("Running '/system/bin/atrace --async_dump', which can take several seconds"); 200 execl("/system/bin/atrace", "/system/bin/atrace", "--async_dump", nullptr); 201 // execl should never return, but if it did, we need to exit. 202 MYLOGD("execl on '/system/bin/atrace --async_dump' failed: %s", strerror(errno)); 203 exit(EXIT_FAILURE); 204 } else { 205 close(pipefd[1]); // close the write end of the pipe in the parent 206 add_zip_entry_from_fd("systrace.txt", pipefd[0]); // write output to zip file 207 } 208} 209 210static bool skip_not_stat(const char *path) { 211 static const char stat[] = "/stat"; 212 size_t len = strlen(path); 213 if (path[len - 1] == '/') { /* Directory? */ 214 return false; 215 } 216 return strcmp(path + len - sizeof(stat) + 1, stat); /* .../stat? */ 217} 218 219static bool skip_none(const char *path) { 220 return false; 221} 222 223static const char mmcblk0[] = "/sys/block/mmcblk0/"; 224unsigned long worst_write_perf = 20000; /* in KB/s */ 225 226// 227// stat offsets 228// Name units description 229// ---- ----- ----------- 230// read I/Os requests number of read I/Os processed 231#define __STAT_READ_IOS 0 232// read merges requests number of read I/Os merged with in-queue I/O 233#define __STAT_READ_MERGES 1 234// read sectors sectors number of sectors read 235#define __STAT_READ_SECTORS 2 236// read ticks milliseconds total wait time for read requests 237#define __STAT_READ_TICKS 3 238// write I/Os requests number of write I/Os processed 239#define __STAT_WRITE_IOS 4 240// write merges requests number of write I/Os merged with in-queue I/O 241#define __STAT_WRITE_MERGES 5 242// write sectors sectors number of sectors written 243#define __STAT_WRITE_SECTORS 6 244// write ticks milliseconds total wait time for write requests 245#define __STAT_WRITE_TICKS 7 246// in_flight requests number of I/Os currently in flight 247#define __STAT_IN_FLIGHT 8 248// io_ticks milliseconds total time this block device has been active 249#define __STAT_IO_TICKS 9 250// time_in_queue milliseconds total wait time for all requests 251#define __STAT_IN_QUEUE 10 252#define __STAT_NUMBER_FIELD 11 253// 254// read I/Os, write I/Os 255// ===================== 256// 257// These values increment when an I/O request completes. 258// 259// read merges, write merges 260// ========================= 261// 262// These values increment when an I/O request is merged with an 263// already-queued I/O request. 264// 265// read sectors, write sectors 266// =========================== 267// 268// These values count the number of sectors read from or written to this 269// block device. The "sectors" in question are the standard UNIX 512-byte 270// sectors, not any device- or filesystem-specific block size. The 271// counters are incremented when the I/O completes. 272#define SECTOR_SIZE 512 273// 274// read ticks, write ticks 275// ======================= 276// 277// These values count the number of milliseconds that I/O requests have 278// waited on this block device. If there are multiple I/O requests waiting, 279// these values will increase at a rate greater than 1000/second; for 280// example, if 60 read requests wait for an average of 30 ms, the read_ticks 281// field will increase by 60*30 = 1800. 282// 283// in_flight 284// ========= 285// 286// This value counts the number of I/O requests that have been issued to 287// the device driver but have not yet completed. It does not include I/O 288// requests that are in the queue but not yet issued to the device driver. 289// 290// io_ticks 291// ======== 292// 293// This value counts the number of milliseconds during which the device has 294// had I/O requests queued. 295// 296// time_in_queue 297// ============= 298// 299// This value counts the number of milliseconds that I/O requests have waited 300// on this block device. If there are multiple I/O requests waiting, this 301// value will increase as the product of the number of milliseconds times the 302// number of requests waiting (see "read ticks" above for an example). 303#define S_TO_MS 1000 304// 305 306static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) { 307 unsigned long long fields[__STAT_NUMBER_FIELD]; 308 bool z; 309 char *cp, *buffer = NULL; 310 size_t i = 0; 311 FILE *fp = fdopen(fd, "rb"); 312 getline(&buffer, &i, fp); 313 fclose(fp); 314 if (!buffer) { 315 return -errno; 316 } 317 i = strlen(buffer); 318 while ((i > 0) && (buffer[i - 1] == '\n')) { 319 buffer[--i] = '\0'; 320 } 321 if (!*buffer) { 322 free(buffer); 323 return 0; 324 } 325 z = true; 326 for (cp = buffer, i = 0; i < (sizeof(fields) / sizeof(fields[0])); ++i) { 327 fields[i] = strtoull(cp, &cp, 10); 328 if (fields[i] != 0) { 329 z = false; 330 } 331 } 332 if (z) { /* never accessed */ 333 free(buffer); 334 return 0; 335 } 336 337 if (!strncmp(path, mmcblk0, sizeof(mmcblk0) - 1)) { 338 path += sizeof(mmcblk0) - 1; 339 } 340 341 printf("%s: %s\n", path, buffer); 342 free(buffer); 343 344 if (fields[__STAT_IO_TICKS]) { 345 unsigned long read_perf = 0; 346 unsigned long read_ios = 0; 347 if (fields[__STAT_READ_TICKS]) { 348 unsigned long long divisor = fields[__STAT_READ_TICKS] 349 * fields[__STAT_IO_TICKS]; 350 read_perf = ((unsigned long long)SECTOR_SIZE 351 * fields[__STAT_READ_SECTORS] 352 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 353 / divisor; 354 read_ios = ((unsigned long long)S_TO_MS * fields[__STAT_READ_IOS] 355 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 356 / divisor; 357 } 358 359 unsigned long write_perf = 0; 360 unsigned long write_ios = 0; 361 if (fields[__STAT_WRITE_TICKS]) { 362 unsigned long long divisor = fields[__STAT_WRITE_TICKS] 363 * fields[__STAT_IO_TICKS]; 364 write_perf = ((unsigned long long)SECTOR_SIZE 365 * fields[__STAT_WRITE_SECTORS] 366 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 367 / divisor; 368 write_ios = ((unsigned long long)S_TO_MS * fields[__STAT_WRITE_IOS] 369 * fields[__STAT_IN_QUEUE] + (divisor >> 1)) 370 / divisor; 371 } 372 373 unsigned queue = (fields[__STAT_IN_QUEUE] 374 + (fields[__STAT_IO_TICKS] >> 1)) 375 / fields[__STAT_IO_TICKS]; 376 377 if (!write_perf && !write_ios) { 378 printf("%s: perf(ios) rd: %luKB/s(%lu/s) q: %u\n", 379 path, read_perf, read_ios, queue); 380 } else { 381 printf("%s: perf(ios) rd: %luKB/s(%lu/s) wr: %luKB/s(%lu/s) q: %u\n", 382 path, read_perf, read_ios, write_perf, write_ios, queue); 383 } 384 385 /* bugreport timeout factor adjustment */ 386 if ((write_perf > 1) && (write_perf < worst_write_perf)) { 387 worst_write_perf = write_perf; 388 } 389 } 390 return 0; 391} 392 393/* Copied policy from system/core/logd/LogBuffer.cpp */ 394 395#define LOG_BUFFER_SIZE (256 * 1024) 396#define LOG_BUFFER_MIN_SIZE (64 * 1024UL) 397#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL) 398 399static bool valid_size(unsigned long value) { 400 if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) { 401 return false; 402 } 403 404 long pages = sysconf(_SC_PHYS_PAGES); 405 if (pages < 1) { 406 return true; 407 } 408 409 long pagesize = sysconf(_SC_PAGESIZE); 410 if (pagesize <= 1) { 411 pagesize = PAGE_SIZE; 412 } 413 414 // maximum memory impact a somewhat arbitrary ~3% 415 pages = (pages + 31) / 32; 416 unsigned long maximum = pages * pagesize; 417 418 if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) { 419 return true; 420 } 421 422 return value <= maximum; 423} 424 425static unsigned long property_get_size(const char *key) { 426 unsigned long value; 427 char *cp, property[PROPERTY_VALUE_MAX]; 428 429 property_get(key, property, ""); 430 value = strtoul(property, &cp, 10); 431 432 switch(*cp) { 433 case 'm': 434 case 'M': 435 value *= 1024; 436 /* FALLTHRU */ 437 case 'k': 438 case 'K': 439 value *= 1024; 440 /* FALLTHRU */ 441 case '\0': 442 break; 443 444 default: 445 value = 0; 446 } 447 448 if (!valid_size(value)) { 449 value = 0; 450 } 451 452 return value; 453} 454 455/* timeout in ms */ 456static unsigned long logcat_timeout(const char *name) { 457 static const char global_tuneable[] = "persist.logd.size"; // Settings App 458 static const char global_default[] = "ro.logd.size"; // BoardConfig.mk 459 char key[PROP_NAME_MAX]; 460 unsigned long property_size, default_size; 461 462 default_size = property_get_size(global_tuneable); 463 if (!default_size) { 464 default_size = property_get_size(global_default); 465 } 466 467 snprintf(key, sizeof(key), "%s.%s", global_tuneable, name); 468 property_size = property_get_size(key); 469 470 if (!property_size) { 471 snprintf(key, sizeof(key), "%s.%s", global_default, name); 472 property_size = property_get_size(key); 473 } 474 475 if (!property_size) { 476 property_size = default_size; 477 } 478 479 if (!property_size) { 480 property_size = LOG_BUFFER_SIZE; 481 } 482 483 /* Engineering margin is ten-fold our guess */ 484 return 10 * (property_size + worst_write_perf) / worst_write_perf; 485} 486 487/* End copy from system/core/logd/LogBuffer.cpp */ 488 489/* dumps the current system state to stdout */ 490static void print_header(std::string version) { 491 char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX]; 492 char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX]; 493 char network[PROPERTY_VALUE_MAX], date[80]; 494 495 property_get("ro.build.display.id", build, "(unknown)"); 496 property_get("ro.build.fingerprint", fingerprint, "(unknown)"); 497 property_get("ro.build.type", build_type, "(unknown)"); 498 property_get("ro.baseband", radio, "(unknown)"); 499 property_get("ro.bootloader", bootloader, "(unknown)"); 500 property_get("gsm.operator.alpha", network, "(unknown)"); 501 strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&now)); 502 503 printf("========================================================\n"); 504 printf("== dumpstate: %s\n", date); 505 printf("========================================================\n"); 506 507 printf("\n"); 508 printf("Build: %s\n", build); 509 printf("Build fingerprint: '%s'\n", fingerprint); /* format is important for other tools */ 510 printf("Bootloader: %s\n", bootloader); 511 printf("Radio: %s\n", radio); 512 printf("Network: %s\n", network); 513 514 printf("Kernel: "); 515 dump_file(NULL, "/proc/version"); 516 printf("Command line: %s\n", strtok(cmdline_buf, "\n")); 517 printf("Bugreport format version: %s\n", version.c_str()); 518 printf("Dumpstate info: id=%lu pid=%d\n", id, getpid()); 519 printf("\n"); 520} 521 522/* adds a new entry to the existing zip file. */ 523static bool add_zip_entry_from_fd(const std::string& entry_name, int fd) { 524 if (!zip_writer) { 525 MYLOGD("Not adding zip entry %s from fd because zip_writer is not set\n", 526 entry_name.c_str()); 527 return false; 528 } 529 // Logging statement below is useful to time how long each entry takes, but it's too verbose. 530 // MYLOGD("Adding zip entry %s\n", entry_name.c_str()); 531 int32_t err = zip_writer->StartEntryWithTime(entry_name.c_str(), 532 ZipWriter::kCompress, get_mtime(fd, now)); 533 if (err) { 534 MYLOGE("zip_writer->StartEntryWithTime(%s): %s\n", entry_name.c_str(), 535 ZipWriter::ErrorCodeString(err)); 536 return false; 537 } 538 539 std::vector<uint8_t> buffer(65536); 540 while (1) { 541 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer.data(), sizeof(buffer))); 542 if (bytes_read == 0) { 543 break; 544 } else if (bytes_read == -1) { 545 MYLOGE("read(%s): %s\n", entry_name.c_str(), strerror(errno)); 546 return false; 547 } 548 err = zip_writer->WriteBytes(buffer.data(), bytes_read); 549 if (err) { 550 MYLOGE("zip_writer->WriteBytes(): %s\n", ZipWriter::ErrorCodeString(err)); 551 return false; 552 } 553 } 554 555 err = zip_writer->FinishEntry(); 556 if (err) { 557 MYLOGE("zip_writer->FinishEntry(): %s\n", ZipWriter::ErrorCodeString(err)); 558 return false; 559 } 560 561 return true; 562} 563 564/* adds a new entry to the existing zip file. */ 565static bool add_zip_entry(const std::string& entry_name, const std::string& entry_path) { 566 ScopedFd fd(TEMP_FAILURE_RETRY(open(entry_path.c_str(), O_RDONLY | O_NONBLOCK | O_CLOEXEC))); 567 if (fd.get() == -1) { 568 MYLOGE("open(%s): %s\n", entry_path.c_str(), strerror(errno)); 569 return false; 570 } 571 572 return add_zip_entry_from_fd(entry_name, fd.get()); 573} 574 575/* adds a file to the existing zipped bugreport */ 576static int _add_file_from_fd(const char *title, const char *path, int fd) { 577 return add_zip_entry_from_fd(ZIP_ROOT_DIR + path, fd) ? 0 : 1; 578} 579 580/* adds all files from a directory to the zipped bugreport file */ 581void add_dir(const char *dir, bool recursive) { 582 if (!zip_writer) { 583 MYLOGD("Not adding dir %s because zip_writer is not set\n", dir); 584 return; 585 } 586 MYLOGD("Adding dir %s (recursive: %d)\n", dir, recursive); 587 DurationReporter duration_reporter(dir, NULL); 588 dump_files(NULL, dir, recursive ? skip_none : is_dir, _add_file_from_fd); 589} 590 591/* adds a text entry entry to the existing zip file. */ 592static bool add_text_zip_entry(const std::string& entry_name, const std::string& content) { 593 if (!zip_writer) { 594 MYLOGD("Not adding text zip entry %s because zip_writer is not set\n", entry_name.c_str()); 595 return false; 596 } 597 MYLOGD("Adding zip text entry %s\n", entry_name.c_str()); 598 int32_t err = zip_writer->StartEntryWithTime(entry_name.c_str(), ZipWriter::kCompress, now); 599 if (err) { 600 MYLOGE("zip_writer->StartEntryWithTime(%s): %s\n", entry_name.c_str(), 601 ZipWriter::ErrorCodeString(err)); 602 return false; 603 } 604 605 err = zip_writer->WriteBytes(content.c_str(), content.length()); 606 if (err) { 607 MYLOGE("zip_writer->WriteBytes(%s): %s\n", entry_name.c_str(), 608 ZipWriter::ErrorCodeString(err)); 609 return false; 610 } 611 612 err = zip_writer->FinishEntry(); 613 if (err) { 614 MYLOGE("zip_writer->FinishEntry(): %s\n", ZipWriter::ErrorCodeString(err)); 615 return false; 616 } 617 618 return true; 619} 620 621static void dumpstate(const std::string& screenshot_path, const std::string& version) { 622 DurationReporter duration_reporter("DUMPSTATE"); 623 unsigned long timeout; 624 625 dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version"); 626 run_command("UPTIME", 10, "uptime", NULL); 627 dump_files("UPTIME MMC PERF", mmcblk0, skip_not_stat, dump_stat_from_fd); 628 dump_emmc_ecsd("/d/mmc0/mmc0:0001/ext_csd"); 629 dump_file("MEMORY INFO", "/proc/meminfo"); 630 run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-H", NULL); 631 run_command("PROCRANK", 20, SU_PATH, "root", "procrank", NULL); 632 dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); 633 dump_file("VMALLOC INFO", "/proc/vmallocinfo"); 634 dump_file("SLAB INFO", "/proc/slabinfo"); 635 dump_file("ZONEINFO", "/proc/zoneinfo"); 636 dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); 637 dump_file("BUDDYINFO", "/proc/buddyinfo"); 638 dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); 639 640 dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources"); 641 dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state"); 642 dump_file("KERNEL SYNC", "/d/sync"); 643 644 run_command("PROCESSES AND THREADS", 10, "ps", "-Z", "-t", "-p", "-P", NULL); 645 run_command("LIBRANK", 10, SU_PATH, "root", "librank", NULL); 646 647 run_command("PRINTENV", 10, "printenv", NULL); 648 run_command("NETSTAT", 10, "netstat", "-n", NULL); 649 run_command("LSMOD", 10, "lsmod", NULL); 650 651 do_dmesg(); 652 653 run_command("LIST OF OPEN FILES", 10, SU_PATH, "root", "lsof", NULL); 654 for_each_pid(do_showmap, "SMAPS OF ALL PROCESSES"); 655 for_each_tid(show_wchan, "BLOCKED PROCESS WAIT-CHANNELS"); 656 for_each_pid(show_showtime, "PROCESS TIMES (pid cmd user system iowait+percentage)"); 657 658 if (!screenshot_path.empty()) { 659 MYLOGI("taking late screenshot\n"); 660 take_screenshot(screenshot_path); 661 MYLOGI("wrote screenshot: %s\n", screenshot_path.c_str()); 662 } 663 664 // dump_file("EVENT LOG TAGS", "/etc/event-log-tags"); 665 // calculate timeout 666 timeout = logcat_timeout("main") + logcat_timeout("system") + logcat_timeout("crash"); 667 if (timeout < 20000) { 668 timeout = 20000; 669 } 670 run_command("SYSTEM LOG", timeout / 1000, "logcat", "-v", "threadtime", 671 "-v", "printable", 672 "-d", 673 "*:v", NULL); 674 timeout = logcat_timeout("events"); 675 if (timeout < 20000) { 676 timeout = 20000; 677 } 678 run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events", 679 "-v", "threadtime", 680 "-v", "printable", 681 "-d", 682 "*:v", NULL); 683 timeout = logcat_timeout("radio"); 684 if (timeout < 20000) { 685 timeout = 20000; 686 } 687 run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio", 688 "-v", "threadtime", 689 "-v", "printable", 690 "-d", 691 "*:v", NULL); 692 693 run_command("LOG STATISTICS", 10, "logcat", "-b", "all", "-S", NULL); 694 695 run_command("RAFT LOGS", 600, SU_PATH, "root", "logcompressor", "-r", RAFT_DIR, NULL); 696 697 /* show the traces we collected in main(), if that was done */ 698 if (dump_traces_path != NULL) { 699 dump_file("VM TRACES JUST NOW", dump_traces_path); 700 } 701 702 /* only show ANR traces if they're less than 15 minutes old */ 703 struct stat st; 704 char anr_traces_path[PATH_MAX]; 705 property_get("dalvik.vm.stack-trace-file", anr_traces_path, ""); 706 if (!anr_traces_path[0]) { 707 printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n"); 708 } else { 709 int fd = TEMP_FAILURE_RETRY(open(anr_traces_path, 710 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 711 if (fd < 0) { 712 printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno)); 713 } else { 714 dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd); 715 } 716 } 717 718 /* slow traces for slow operations */ 719 if (anr_traces_path[0] != 0) { 720 int tail = strlen(anr_traces_path)-1; 721 while (tail > 0 && anr_traces_path[tail] != '/') { 722 tail--; 723 } 724 int i = 0; 725 while (1) { 726 sprintf(anr_traces_path+tail+1, "slow%02d.txt", i); 727 if (stat(anr_traces_path, &st)) { 728 // No traces file at this index, done with the files. 729 break; 730 } 731 dump_file("VM TRACES WHEN SLOW", anr_traces_path); 732 i++; 733 } 734 } 735 736 int dumped = 0; 737 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 738 if (tombstone_data[i].fd != -1) { 739 const char *name = tombstone_data[i].name; 740 int fd = tombstone_data[i].fd; 741 dumped = 1; 742 if (zip_writer) { 743 if (!add_zip_entry_from_fd(ZIP_ROOT_DIR + name, fd)) { 744 MYLOGE("Unable to add tombstone %s to zip file\n", name); 745 } 746 } else { 747 dump_file_from_fd("TOMBSTONE", name, fd); 748 } 749 close(fd); 750 tombstone_data[i].fd = -1; 751 } 752 } 753 if (!dumped) { 754 printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR); 755 } 756 757 dump_file("NETWORK DEV INFO", "/proc/net/dev"); 758 dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all"); 759 dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt"); 760 dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl"); 761 dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats"); 762 763 if (!stat(PSTORE_LAST_KMSG, &st)) { 764 /* Also TODO: Make console-ramoops CAP_SYSLOG protected. */ 765 dump_file("LAST KMSG", PSTORE_LAST_KMSG); 766 } else { 767 /* TODO: Make last_kmsg CAP_SYSLOG protected. b/5555691 */ 768 dump_file("LAST KMSG", "/proc/last_kmsg"); 769 } 770 771 /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */ 772 run_command("LAST LOGCAT", 10, "logcat", "-L", 773 "-b", "all", 774 "-v", "threadtime", 775 "-v", "printable", 776 "-d", 777 "*:v", NULL); 778 779 /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */ 780 781 run_command("NETWORK INTERFACES", 10, "ip", "link", NULL); 782 783 run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL); 784 run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL); 785 786 run_command("IP RULES", 10, "ip", "rule", "show", NULL); 787 run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL); 788 789 dump_route_tables(); 790 791 run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL); 792 run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL); 793 794 run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL); 795 run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL); 796 run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL); 797 /* no ip6 nat */ 798 run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL); 799 run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL); 800 801 run_command("WIFI NETWORKS", 20, 802 SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL); 803 804#ifdef FWDUMP_bcmdhd 805 run_command("ND OFFLOAD TABLE", 5, 806 SU_PATH, "root", "wlutil", "nd_hostip", NULL); 807 808 run_command("DUMP WIFI INTERNAL COUNTERS (1)", 20, 809 SU_PATH, "root", "wlutil", "counters", NULL); 810 811 run_command("ND OFFLOAD STATUS (1)", 5, 812 SU_PATH, "root", "wlutil", "nd_status", NULL); 813 814#endif 815 dump_file("INTERRUPTS (1)", "/proc/interrupts"); 816 817 run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL); 818 819#ifdef FWDUMP_bcmdhd 820 run_command("DUMP WIFI STATUS", 20, 821 SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL); 822 823 run_command("DUMP WIFI INTERNAL COUNTERS (2)", 20, 824 SU_PATH, "root", "wlutil", "counters", NULL); 825 826 run_command("ND OFFLOAD STATUS (2)", 5, 827 SU_PATH, "root", "wlutil", "nd_status", NULL); 828#endif 829 dump_file("INTERRUPTS (2)", "/proc/interrupts"); 830 831 print_properties(); 832 833 run_command("VOLD DUMP", 10, "vdc", "dump", NULL); 834 run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL); 835 836 run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL); 837 838 run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL); 839 840 printf("------ BACKLIGHTS ------\n"); 841 printf("LCD brightness="); 842 dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness"); 843 printf("Button brightness="); 844 dump_file(NULL, "/sys/class/leds/button-backlight/brightness"); 845 printf("Keyboard brightness="); 846 dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness"); 847 printf("ALS mode="); 848 dump_file(NULL, "/sys/class/leds/lcd-backlight/als"); 849 printf("LCD driver registers:\n"); 850 dump_file(NULL, "/sys/class/leds/lcd-backlight/registers"); 851 printf("\n"); 852 853 /* Binder state is expensive to look at as it uses a lot of memory. */ 854 dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log"); 855 dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log"); 856 dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions"); 857 dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats"); 858 dump_file("BINDER STATE", "/sys/kernel/debug/binder/state"); 859 860 printf("========================================================\n"); 861 printf("== Board\n"); 862 printf("========================================================\n"); 863 864 dumpstate_board(); 865 printf("\n"); 866 867 /* Migrate the ril_dumpstate to a dumpstate_board()? */ 868 char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0}; 869 property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30"); 870 if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) { 871 if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) { 872 // su does not exist on user builds, so try running without it. 873 // This way any implementations of vril-dump that do not require 874 // root can run on user builds. 875 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 876 "vril-dump", NULL); 877 } else { 878 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 879 SU_PATH, "root", "vril-dump", NULL); 880 } 881 } 882 883 printf("========================================================\n"); 884 printf("== Android Framework Services\n"); 885 printf("========================================================\n"); 886 887 run_command("DUMPSYS", 60, "dumpsys", "-t", "60", "--skip", "meminfo,cpuinfo", NULL); 888 889 printf("========================================================\n"); 890 printf("== Checkins\n"); 891 printf("========================================================\n"); 892 893 run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL); 894 run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL); 895 run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL); 896 run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL); 897 run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL); 898 run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", NULL); 899 900 printf("========================================================\n"); 901 printf("== Running Application Activities\n"); 902 printf("========================================================\n"); 903 904 run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL); 905 906 printf("========================================================\n"); 907 printf("== Running Application Services\n"); 908 printf("========================================================\n"); 909 910 run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL); 911 912 printf("========================================================\n"); 913 printf("== Running Application Providers\n"); 914 printf("========================================================\n"); 915 916 run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL); 917 918 919 printf("========================================================\n"); 920 printf("== Final progress (pid %d): %d/%d (originally %d)\n", 921 getpid(), progress, weight_total, WEIGHT_TOTAL); 922 printf("========================================================\n"); 923 printf("== dumpstate: done\n"); 924 printf("========================================================\n"); 925} 926 927static void usage() { 928 fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q] [-B] [-P] [-R] [-V version]\n" 929 " -b: play sound file instead of vibrate, at beginning of job\n" 930 " -e: play sound file instead of vibrate, at end of job\n" 931 " -o: write to file (instead of stdout)\n" 932 " -d: append date to filename (requires -o)\n" 933 " -p: capture screenshot to filename.png (requires -o)\n" 934 " -z: generates zipped file (requires -o)\n" 935 " -s: write output to control socket (for init)\n" 936 " -q: disable vibrate\n" 937 " -B: send broadcast when finished (requires -o)\n" 938 " -P: send broadcast when started and update system properties on progress (requires -o and -B)\n" 939 " -R: take bugreport in remote mode (requires -o, -z, -d and -B, shouldn't be used with -P)\n" 940 " -V: sets the bugreport format version (valid values: %s)\n", 941 VERSION_DEFAULT.c_str()); 942} 943 944static void sigpipe_handler(int n) { 945 // don't complain to stderr or stdout 946 _exit(EXIT_FAILURE); 947} 948 949/* adds the temporary report to the existing .zip file, closes the .zip file, and removes the 950 temporary file. 951 */ 952static bool finish_zip_file(const std::string& bugreport_name, const std::string& bugreport_path, 953 time_t now) { 954 if (!add_zip_entry(bugreport_name, bugreport_path)) { 955 MYLOGE("Failed to add text entry to .zip file\n"); 956 return false; 957 } 958 if (!add_text_zip_entry("main_entry.txt", bugreport_name)) { 959 MYLOGE("Failed to add main_entry.txt to .zip file\n"); 960 return false; 961 } 962 963 int32_t err = zip_writer->Finish(); 964 if (err) { 965 MYLOGE("zip_writer->Finish(): %s\n", ZipWriter::ErrorCodeString(err)); 966 return false; 967 } 968 969 return true; 970} 971 972static std::string SHA256_file_hash(std::string filepath) { 973 ScopedFd fd(TEMP_FAILURE_RETRY(open(filepath.c_str(), O_RDONLY | O_NONBLOCK | O_CLOEXEC 974 | O_NOFOLLOW))); 975 if (fd.get() == -1) { 976 MYLOGE("open(%s): %s\n", filepath.c_str(), strerror(errno)); 977 return NULL; 978 } 979 980 SHA256_CTX ctx; 981 SHA256_init(&ctx); 982 983 std::vector<uint8_t> buffer(65536); 984 while (1) { 985 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd.get(), buffer.data(), buffer.size())); 986 if (bytes_read == 0) { 987 break; 988 } else if (bytes_read == -1) { 989 MYLOGE("read(%s): %s\n", filepath.c_str(), strerror(errno)); 990 return NULL; 991 } 992 993 SHA256_update(&ctx, buffer.data(), bytes_read); 994 } 995 996 uint8_t hash[SHA256_DIGEST_SIZE]; 997 memcpy(hash, SHA256_final(&ctx), SHA256_DIGEST_SIZE); 998 char hash_buffer[SHA256_DIGEST_SIZE * 2 + 1]; 999 for(size_t i = 0; i < SHA256_DIGEST_SIZE; i++) { 1000 sprintf(hash_buffer + (i * 2), "%02x", hash[i]); 1001 } 1002 hash_buffer[sizeof(hash_buffer) - 1] = 0; 1003 return std::string(hash_buffer); 1004} 1005 1006int main(int argc, char *argv[]) { 1007 struct sigaction sigact; 1008 int do_add_date = 0; 1009 int do_zip_file = 0; 1010 int do_vibrate = 1; 1011 char* use_outfile = 0; 1012 int use_socket = 0; 1013 int do_fb = 0; 1014 int do_broadcast = 0; 1015 int do_early_screenshot = 0; 1016 int is_remote_mode = 0; 1017 std::string version = VERSION_DEFAULT; 1018 1019 now = time(NULL); 1020 1021 if (getuid() != 0) { 1022 // Old versions of the adb client would call the 1023 // dumpstate command directly. Newer clients 1024 // call /system/bin/bugreport instead. If we detect 1025 // we're being called incorrectly, then exec the 1026 // correct program. 1027 return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL); 1028 } 1029 1030 MYLOGI("begin\n"); 1031 1032 /* gets the sequential id */ 1033 char last_id[PROPERTY_VALUE_MAX]; 1034 property_get("dumpstate.last_id", last_id, "0"); 1035 id = strtoul(last_id, NULL, 10) + 1; 1036 sprintf(last_id, "%lu", id); 1037 property_set("dumpstate.last_id", last_id); 1038 MYLOGI("dumpstate id: %lu\n", id); 1039 1040 /* clear SIGPIPE handler */ 1041 memset(&sigact, 0, sizeof(sigact)); 1042 sigact.sa_handler = sigpipe_handler; 1043 sigaction(SIGPIPE, &sigact, NULL); 1044 1045 /* set as high priority, and protect from OOM killer */ 1046 setpriority(PRIO_PROCESS, 0, -20); 1047 FILE *oom_adj = fopen("/proc/self/oom_adj", "we"); 1048 if (oom_adj) { 1049 fputs("-17", oom_adj); 1050 fclose(oom_adj); 1051 } 1052 1053 /* parse arguments */ 1054 std::string args; 1055 format_args(argc, const_cast<const char **>(argv), &args); 1056 MYLOGD("Dumpstate command line: %s\n", args.c_str()); 1057 int c; 1058 while ((c = getopt(argc, argv, "dho:svqzpPBRV:")) != -1) { 1059 switch (c) { 1060 case 'd': do_add_date = 1; break; 1061 case 'z': do_zip_file = 1; break; 1062 case 'o': use_outfile = optarg; break; 1063 case 's': use_socket = 1; break; 1064 case 'v': break; // compatibility no-op 1065 case 'q': do_vibrate = 0; break; 1066 case 'p': do_fb = 1; break; 1067 case 'P': do_update_progress = 1; break; 1068 case 'R': is_remote_mode = 1; break; 1069 case 'B': do_broadcast = 1; break; 1070 case 'V': version = optarg; break; 1071 case '?': printf("\n"); 1072 case 'h': 1073 usage(); 1074 exit(1); 1075 } 1076 } 1077 1078 if ((do_zip_file || do_add_date || do_update_progress || do_broadcast) && !use_outfile) { 1079 usage(); 1080 exit(1); 1081 } 1082 1083 if (do_update_progress && !do_broadcast) { 1084 usage(); 1085 exit(1); 1086 } 1087 1088 if (is_remote_mode && (do_update_progress || !do_broadcast || !do_zip_file || !do_add_date)) { 1089 usage(); 1090 exit(1); 1091 } 1092 1093 if (version != VERSION_DEFAULT) { 1094 usage(); 1095 exit(1); 1096 } 1097 1098 MYLOGI("bugreport format version: %s\n", version.c_str()); 1099 1100 do_early_screenshot = do_update_progress; 1101 1102 // If we are going to use a socket, do it as early as possible 1103 // to avoid timeouts from bugreport. 1104 if (use_socket) { 1105 redirect_to_socket(stdout, "dumpstate"); 1106 } 1107 1108 /* full path of the directory where the bugreport files will be written */ 1109 std::string bugreport_dir; 1110 1111 /* full path of the temporary file containing the bugreport */ 1112 std::string tmp_path; 1113 1114 /* full path of the file containing the dumpstate logs*/ 1115 std::string log_path; 1116 1117 /* full path of the temporary file containing the screenshot (when requested) */ 1118 std::string screenshot_path; 1119 1120 /* base name (without suffix or extensions) of the bugreport files */ 1121 std::string base_name; 1122 1123 /* suffix of the bugreport files - it's typically the date (when invoked with -d), 1124 * although it could be changed by the user using a system property */ 1125 std::string suffix; 1126 1127 /* pointer to the actual path, be it zip or text */ 1128 std::string path; 1129 1130 /* pointer to the zipped file */ 1131 std::unique_ptr<FILE, int(*)(FILE*)> zip_file(NULL, fclose); 1132 1133 /* redirect output if needed */ 1134 bool is_redirecting = !use_socket && use_outfile; 1135 1136 if (is_redirecting) { 1137 bugreport_dir = dirname(use_outfile); 1138 base_name = basename(use_outfile); 1139 if (do_add_date) { 1140 char date[80]; 1141 strftime(date, sizeof(date), "%Y-%m-%d-%H-%M-%S", localtime(&now)); 1142 suffix = date; 1143 } else { 1144 suffix = "undated"; 1145 } 1146 if (do_fb) { 1147 // TODO: if dumpstate was an object, the paths could be internal variables and then 1148 // we could have a function to calculate the derived values, such as: 1149 // screenshot_path = GetPath(".png"); 1150 screenshot_path = bugreport_dir + "/" + base_name + "-" + suffix + ".png"; 1151 } 1152 tmp_path = bugreport_dir + "/" + base_name + "-" + suffix + ".tmp"; 1153 log_path = bugreport_dir + "/dumpstate_log-" + suffix + "-" 1154 + std::to_string(getpid()) + ".txt"; 1155 1156 MYLOGD("Bugreport dir: %s\n" 1157 "Base name: %s\n" 1158 "Suffix: %s\n" 1159 "Log path: %s\n" 1160 "Temporary path: %s\n" 1161 "Screenshot path: %s\n", 1162 bugreport_dir.c_str(), base_name.c_str(), suffix.c_str(), 1163 log_path.c_str(), tmp_path.c_str(), screenshot_path.c_str()); 1164 1165 if (do_zip_file) { 1166 path = bugreport_dir + "/" + base_name + "-" + suffix + ".zip"; 1167 MYLOGD("Creating initial .zip file (%s)\n", path.c_str()); 1168 create_parent_dirs(path.c_str()); 1169 zip_file.reset(fopen(path.c_str(), "wb")); 1170 if (!zip_file) { 1171 MYLOGE("fopen(%s, 'wb'): %s\n", path.c_str(), strerror(errno)); 1172 do_zip_file = 0; 1173 } else { 1174 zip_writer.reset(new ZipWriter(zip_file.get())); 1175 } 1176 add_text_zip_entry("version.txt", version); 1177 } 1178 1179 if (do_update_progress) { 1180 std::vector<std::string> am_args = { 1181 "--receiver-permission", "android.permission.DUMP", "--receiver-foreground", 1182 "--es", "android.intent.extra.NAME", suffix, 1183 "--ei", "android.intent.extra.ID", std::to_string(id), 1184 "--ei", "android.intent.extra.PID", std::to_string(getpid()), 1185 "--ei", "android.intent.extra.MAX", std::to_string(WEIGHT_TOTAL), 1186 }; 1187 send_broadcast("android.intent.action.BUGREPORT_STARTED", am_args); 1188 } 1189 } 1190 1191 /* read /proc/cmdline before dropping root */ 1192 FILE *cmdline = fopen("/proc/cmdline", "re"); 1193 if (cmdline) { 1194 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); 1195 fclose(cmdline); 1196 } 1197 1198 /* open the vibrator before dropping root */ 1199 std::unique_ptr<FILE, int(*)(FILE*)> vibrator(NULL, fclose); 1200 if (do_vibrate) { 1201 vibrator.reset(fopen("/sys/class/timed_output/vibrator/enable", "we")); 1202 if (vibrator) { 1203 vibrate(vibrator.get(), 150); 1204 } 1205 } 1206 1207 if (do_fb && do_early_screenshot) { 1208 if (screenshot_path.empty()) { 1209 // should not have happened 1210 MYLOGE("INTERNAL ERROR: skipping early screenshot because path was not set\n"); 1211 } else { 1212 MYLOGI("taking early screenshot\n"); 1213 take_screenshot(screenshot_path); 1214 MYLOGI("wrote screenshot: %s\n", screenshot_path.c_str()); 1215 if (chown(screenshot_path.c_str(), AID_SHELL, AID_SHELL)) { 1216 MYLOGE("Unable to change ownership of screenshot file %s: %s\n", 1217 screenshot_path.c_str(), strerror(errno)); 1218 } 1219 } 1220 } 1221 1222 if (do_zip_file) { 1223 if (chown(path.c_str(), AID_SHELL, AID_SHELL)) { 1224 MYLOGE("Unable to change ownership of zip file %s: %s\n", path.c_str(), strerror(errno)); 1225 } 1226 } 1227 1228 if (is_redirecting) { 1229 redirect_to_file(stderr, const_cast<char*>(log_path.c_str())); 1230 if (chown(log_path.c_str(), AID_SHELL, AID_SHELL)) { 1231 MYLOGE("Unable to change ownership of dumpstate log file %s: %s\n", 1232 log_path.c_str(), strerror(errno)); 1233 } 1234 /* TODO: rather than generating a text file now and zipping it later, 1235 it would be more efficient to redirect stdout to the zip entry 1236 directly, but the libziparchive doesn't support that option yet. */ 1237 redirect_to_file(stdout, const_cast<char*>(tmp_path.c_str())); 1238 if (chown(tmp_path.c_str(), AID_SHELL, AID_SHELL)) { 1239 MYLOGE("Unable to change ownership of temporary bugreport file %s: %s\n", 1240 tmp_path.c_str(), strerror(errno)); 1241 } 1242 } 1243 // NOTE: there should be no stdout output until now, otherwise it would break the header. 1244 // In particular, DurationReport objects should be created passing 'title, NULL', so their 1245 // duration is logged into MYLOG instead. 1246 print_header(version); 1247 1248 // Dumps systrace right away, otherwise it will be filled with unnecessary events. 1249 dump_systrace(); 1250 1251 // Invoking the following dumpsys calls before dump_traces() to try and 1252 // keep the system stats as close to its initial state as possible. 1253 run_command_as_shell("DUMPSYS MEMINFO", 30, "dumpsys", "-t", "30", "meminfo", "-a", NULL); 1254 run_command_as_shell("DUMPSYS CPUINFO", 10, "dumpsys", "cpuinfo", "-a", NULL); 1255 1256 /* collect stack traces from Dalvik and native processes (needs root) */ 1257 dump_traces_path = dump_traces(); 1258 1259 /* Get the tombstone fds, recovery files, and mount info here while we are running as root. */ 1260 get_tombstone_fds(tombstone_data); 1261 add_dir(RECOVERY_DIR, true); 1262 add_mountinfo(); 1263 1264 if (!drop_root_user()) { 1265 return -1; 1266 } 1267 1268 dumpstate(do_early_screenshot ? "": screenshot_path, version); 1269 1270 /* close output if needed */ 1271 if (is_redirecting) { 1272 fclose(stdout); 1273 } 1274 1275 /* rename or zip the (now complete) .tmp file to its final location */ 1276 if (use_outfile) { 1277 1278 /* check if user changed the suffix using system properties */ 1279 char key[PROPERTY_KEY_MAX]; 1280 char value[PROPERTY_VALUE_MAX]; 1281 sprintf(key, "dumpstate.%d.name", getpid()); 1282 property_get(key, value, ""); 1283 bool change_suffix= false; 1284 if (value[0]) { 1285 /* must whitelist which characters are allowed, otherwise it could cross directories */ 1286 std::regex valid_regex("^[-_a-zA-Z0-9]+$"); 1287 if (std::regex_match(value, valid_regex)) { 1288 change_suffix = true; 1289 } else { 1290 MYLOGE("invalid suffix provided by user: %s\n", value); 1291 } 1292 } 1293 if (change_suffix) { 1294 MYLOGI("changing suffix from %s to %s\n", suffix.c_str(), value); 1295 suffix = value; 1296 if (!screenshot_path.empty()) { 1297 std::string new_screenshot_path = 1298 bugreport_dir + "/" + base_name + "-" + suffix + ".png"; 1299 if (rename(screenshot_path.c_str(), new_screenshot_path.c_str())) { 1300 MYLOGE("rename(%s, %s): %s\n", screenshot_path.c_str(), 1301 new_screenshot_path.c_str(), strerror(errno)); 1302 } else { 1303 screenshot_path = new_screenshot_path; 1304 } 1305 } 1306 } 1307 1308 bool do_text_file = true; 1309 if (do_zip_file) { 1310 std::string entry_name = base_name + "-" + suffix + ".txt"; 1311 MYLOGD("Adding main entry (%s) to .zip bugreport\n", entry_name.c_str()); 1312 if (!finish_zip_file(entry_name, tmp_path, now)) { 1313 MYLOGE("Failed to finish zip file; sending text bugreport instead\n"); 1314 do_text_file = true; 1315 } else { 1316 do_text_file = false; 1317 // Since zip file is already created, it needs to be renamed. 1318 std::string new_path = bugreport_dir + "/" + base_name + "-" + suffix + ".zip"; 1319 if (path != new_path) { 1320 MYLOGD("Renaming zip file from %s to %s\n", path.c_str(), new_path.c_str()); 1321 if (rename(path.c_str(), new_path.c_str())) { 1322 MYLOGE("rename(%s, %s): %s\n", path.c_str(), 1323 new_path.c_str(), strerror(errno)); 1324 } else { 1325 path = new_path; 1326 } 1327 } 1328 } 1329 } 1330 if (do_text_file) { 1331 path = bugreport_dir + "/" + base_name + "-" + suffix + ".txt"; 1332 MYLOGD("Generating .txt bugreport at %s from %s\n", path.c_str(), tmp_path.c_str()); 1333 if (rename(tmp_path.c_str(), path.c_str())) { 1334 MYLOGE("rename(%s, %s): %s\n", tmp_path.c_str(), path.c_str(), strerror(errno)); 1335 path.clear(); 1336 } 1337 } 1338 } 1339 1340 /* vibrate a few but shortly times to let user know it's finished */ 1341 if (vibrator) { 1342 for (int i = 0; i < 3; i++) { 1343 vibrate(vibrator.get(), 75); 1344 usleep((75 + 50) * 1000); 1345 } 1346 } 1347 1348 /* tell activity manager we're done */ 1349 if (do_broadcast) { 1350 if (!path.empty()) { 1351 MYLOGI("Final bugreport path: %s\n", path.c_str()); 1352 std::vector<std::string> am_args = { 1353 "--receiver-permission", "android.permission.DUMP", "--receiver-foreground", 1354 "--ei", "android.intent.extra.ID", std::to_string(id), 1355 "--ei", "android.intent.extra.PID", std::to_string(getpid()), 1356 "--ei", "android.intent.extra.MAX", std::to_string(weight_total), 1357 "--es", "android.intent.extra.BUGREPORT", path, 1358 "--es", "android.intent.extra.DUMPSTATE_LOG", log_path 1359 }; 1360 if (do_fb) { 1361 am_args.push_back("--es"); 1362 am_args.push_back("android.intent.extra.SCREENSHOT"); 1363 am_args.push_back(screenshot_path); 1364 } 1365 if (is_remote_mode) { 1366 am_args.push_back("--es"); 1367 am_args.push_back("android.intent.extra.REMOTE_BUGREPORT_HASH"); 1368 am_args.push_back(SHA256_file_hash(path)); 1369 send_broadcast("android.intent.action.REMOTE_BUGREPORT_FINISHED", am_args); 1370 } else { 1371 send_broadcast("android.intent.action.BUGREPORT_FINISHED", am_args); 1372 } 1373 } else { 1374 MYLOGE("Skipping finished broadcast because bugreport could not be generated\n"); 1375 } 1376 } 1377 1378 MYLOGD("Final progress: %d/%d (originally %d)\n", progress, weight_total, WEIGHT_TOTAL); 1379 MYLOGI("done\n"); 1380 1381 if (is_redirecting) { 1382 fclose(stderr); 1383 } 1384 1385 return 0; 1386} 1387