dumpstate.cpp revision 8620bb4118a68721d10c29529dc6978847d08d00
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <dirent.h> 18#include <errno.h> 19#include <fcntl.h> 20#include <limits.h> 21#include <stdbool.h> 22#include <stdio.h> 23#include <stdlib.h> 24#include <string.h> 25#include <sys/capability.h> 26#include <sys/prctl.h> 27#include <sys/resource.h> 28#include <sys/stat.h> 29#include <sys/time.h> 30#include <sys/wait.h> 31#include <unistd.h> 32 33#include <cutils/properties.h> 34 35#include "private/android_filesystem_config.h" 36 37#define LOG_TAG "dumpstate" 38#include <cutils/log.h> 39 40#include "dumpstate.h" 41 42/* read before root is shed */ 43static char cmdline_buf[16384] = "(unknown)"; 44static const char *dump_traces_path = NULL; 45 46static char screenshot_path[PATH_MAX] = ""; 47 48#define PSTORE_LAST_KMSG "/sys/fs/pstore/console-ramoops" 49 50#define RAFT_DIR "/data/misc/raft/" 51#define TOMBSTONE_DIR "/data/tombstones" 52#define TOMBSTONE_FILE_PREFIX TOMBSTONE_DIR "/tombstone_" 53/* Can accomodate a tombstone number up to 9999. */ 54#define TOMBSTONE_MAX_LEN (sizeof(TOMBSTONE_FILE_PREFIX) + 4) 55#define NUM_TOMBSTONES 10 56 57typedef struct { 58 char name[TOMBSTONE_MAX_LEN]; 59 int fd; 60} tombstone_data_t; 61 62static tombstone_data_t tombstone_data[NUM_TOMBSTONES]; 63 64/* Get the fds of any tombstone that was modified in the last half an hour. */ 65static void get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES]) { 66 time_t thirty_minutes_ago = time(NULL) - 60*30; 67 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 68 snprintf(data[i].name, sizeof(data[i].name), "%s%02zu", TOMBSTONE_FILE_PREFIX, i); 69 int fd = TEMP_FAILURE_RETRY(open(data[i].name, 70 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 71 struct stat st; 72 if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) && 73 (time_t) st.st_mtime >= thirty_minutes_ago) { 74 data[i].fd = fd; 75 } else { 76 close(fd); 77 data[i].fd = -1; 78 } 79 } 80} 81 82static void dump_dev_files(const char *title, const char *driverpath, const char *filename) 83{ 84 DIR *d; 85 struct dirent *de; 86 char path[PATH_MAX]; 87 88 d = opendir(driverpath); 89 if (d == NULL) { 90 return; 91 } 92 93 while ((de = readdir(d))) { 94 if (de->d_type != DT_LNK) { 95 continue; 96 } 97 snprintf(path, sizeof(path), "%s/%s/%s", driverpath, de->d_name, filename); 98 dump_file(title, path); 99 } 100 101 closedir(d); 102} 103 104static bool skip_not_stat(const char *path) { 105 static const char stat[] = "/stat"; 106 size_t len = strlen(path); 107 if (path[len - 1] == '/') { /* Directory? */ 108 return false; 109 } 110 return strcmp(path + len - sizeof(stat) + 1, stat); /* .../stat? */ 111} 112 113static const char mmcblk0[] = "/sys/block/mmcblk0/"; 114unsigned long worst_write_perf = 20000; /* in KB/s */ 115 116static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) { 117 unsigned long fields[11], read_perf, write_perf; 118 bool z; 119 char *cp, *buffer = NULL; 120 size_t i = 0; 121 FILE *fp = fdopen(fd, "rb"); 122 getline(&buffer, &i, fp); 123 fclose(fp); 124 if (!buffer) { 125 return -errno; 126 } 127 i = strlen(buffer); 128 while ((i > 0) && (buffer[i - 1] == '\n')) { 129 buffer[--i] = '\0'; 130 } 131 if (!*buffer) { 132 free(buffer); 133 return 0; 134 } 135 z = true; 136 for (cp = buffer, i = 0; i < (sizeof(fields) / sizeof(fields[0])); ++i) { 137 fields[i] = strtol(cp, &cp, 0); 138 if (fields[i] != 0) { 139 z = false; 140 } 141 } 142 if (z) { /* never accessed */ 143 free(buffer); 144 return 0; 145 } 146 147 if (!strncmp(path, mmcblk0, sizeof(mmcblk0) - 1)) { 148 path += sizeof(mmcblk0) - 1; 149 } 150 151 printf("%s: %s\n", path, buffer); 152 free(buffer); 153 154 read_perf = 0; 155 if (fields[3]) { 156 read_perf = 512 * fields[2] / fields[3]; 157 } 158 write_perf = 0; 159 if (fields[7]) { 160 write_perf = 512 * fields[6] / fields[7]; 161 } 162 printf("%s: read: %luKB/s write: %luKB/s\n", path, read_perf, write_perf); 163 if ((write_perf > 1) && (write_perf < worst_write_perf)) { 164 worst_write_perf = write_perf; 165 } 166 return 0; 167} 168 169/* Copied policy from system/core/logd/LogBuffer.cpp */ 170 171#define LOG_BUFFER_SIZE (256 * 1024) 172#define LOG_BUFFER_MIN_SIZE (64 * 1024UL) 173#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL) 174 175static bool valid_size(unsigned long value) { 176 if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) { 177 return false; 178 } 179 180 long pages = sysconf(_SC_PHYS_PAGES); 181 if (pages < 1) { 182 return true; 183 } 184 185 long pagesize = sysconf(_SC_PAGESIZE); 186 if (pagesize <= 1) { 187 pagesize = PAGE_SIZE; 188 } 189 190 // maximum memory impact a somewhat arbitrary ~3% 191 pages = (pages + 31) / 32; 192 unsigned long maximum = pages * pagesize; 193 194 if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) { 195 return true; 196 } 197 198 return value <= maximum; 199} 200 201static unsigned long property_get_size(const char *key) { 202 unsigned long value; 203 char *cp, property[PROPERTY_VALUE_MAX]; 204 205 property_get(key, property, ""); 206 value = strtoul(property, &cp, 10); 207 208 switch(*cp) { 209 case 'm': 210 case 'M': 211 value *= 1024; 212 /* FALLTHRU */ 213 case 'k': 214 case 'K': 215 value *= 1024; 216 /* FALLTHRU */ 217 case '\0': 218 break; 219 220 default: 221 value = 0; 222 } 223 224 if (!valid_size(value)) { 225 value = 0; 226 } 227 228 return value; 229} 230 231/* timeout in ms */ 232static unsigned long logcat_timeout(const char *name) { 233 static const char global_tuneable[] = "persist.logd.size"; // Settings App 234 static const char global_default[] = "ro.logd.size"; // BoardConfig.mk 235 char key[PROP_NAME_MAX]; 236 unsigned long property_size, default_size; 237 238 default_size = property_get_size(global_tuneable); 239 if (!default_size) { 240 default_size = property_get_size(global_default); 241 } 242 243 snprintf(key, sizeof(key), "%s.%s", global_tuneable, name); 244 property_size = property_get_size(key); 245 246 if (!property_size) { 247 snprintf(key, sizeof(key), "%s.%s", global_default, name); 248 property_size = property_get_size(key); 249 } 250 251 if (!property_size) { 252 property_size = default_size; 253 } 254 255 if (!property_size) { 256 property_size = LOG_BUFFER_SIZE; 257 } 258 259 /* Engineering margin is ten-fold our guess */ 260 return 10 * (property_size + worst_write_perf) / worst_write_perf; 261} 262 263/* End copy from system/core/logd/LogBuffer.cpp */ 264 265/* dumps the current system state to stdout */ 266static void dumpstate() { 267 unsigned long timeout; 268 time_t now = time(NULL); 269 char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX]; 270 char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX]; 271 char network[PROPERTY_VALUE_MAX], date[80]; 272 char build_type[PROPERTY_VALUE_MAX]; 273 274 property_get("ro.build.display.id", build, "(unknown)"); 275 property_get("ro.build.fingerprint", fingerprint, "(unknown)"); 276 property_get("ro.build.type", build_type, "(unknown)"); 277 property_get("ro.baseband", radio, "(unknown)"); 278 property_get("ro.bootloader", bootloader, "(unknown)"); 279 property_get("gsm.operator.alpha", network, "(unknown)"); 280 strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&now)); 281 282 printf("========================================================\n"); 283 printf("== dumpstate: %s\n", date); 284 printf("========================================================\n"); 285 286 printf("\n"); 287 printf("Build: %s\n", build); 288 printf("Build fingerprint: '%s'\n", fingerprint); /* format is important for other tools */ 289 printf("Bootloader: %s\n", bootloader); 290 printf("Radio: %s\n", radio); 291 printf("Network: %s\n", network); 292 293 printf("Kernel: "); 294 dump_file(NULL, "/proc/version"); 295 printf("Command line: %s\n", strtok(cmdline_buf, "\n")); 296 printf("\n"); 297 298 dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version"); 299 run_command("UPTIME", 10, "uptime", NULL); 300 dump_files("UPTIME MMC PERF", mmcblk0, skip_not_stat, dump_stat_from_fd); 301 dump_file("MEMORY INFO", "/proc/meminfo"); 302 run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-t", NULL); 303 run_command("PROCRANK", 20, SU_PATH, "root", "procrank", NULL); 304 dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); 305 dump_file("VMALLOC INFO", "/proc/vmallocinfo"); 306 dump_file("SLAB INFO", "/proc/slabinfo"); 307 dump_file("ZONEINFO", "/proc/zoneinfo"); 308 dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); 309 dump_file("BUDDYINFO", "/proc/buddyinfo"); 310 dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); 311 312 dump_file("KERNEL WAKELOCKS", "/proc/wakelocks"); 313 dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources"); 314 dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state"); 315 dump_file("KERNEL SYNC", "/d/sync"); 316 317 run_command("PROCESSES AND THREADS", 10, "ps", "-Z", "-t", "-p", "-P", NULL); 318 run_command("LIBRANK", 10, "librank", NULL); 319 320 do_dmesg(); 321 322 run_command("LIST OF OPEN FILES", 10, SU_PATH, "root", "lsof", NULL); 323 for_each_pid(do_showmap, "SMAPS OF ALL PROCESSES"); 324 for_each_tid(show_wchan, "BLOCKED PROCESS WAIT-CHANNELS"); 325 326 if (screenshot_path[0]) { 327 ALOGI("taking screenshot\n"); 328 run_command(NULL, 10, "/system/bin/screencap", "-p", screenshot_path, NULL); 329 ALOGI("wrote screenshot: %s\n", screenshot_path); 330 } 331 332 // dump_file("EVENT LOG TAGS", "/etc/event-log-tags"); 333 // calculate timeout 334 timeout = logcat_timeout("main") + logcat_timeout("system") + logcat_timeout("crash"); 335 if (timeout < 20000) { 336 timeout = 20000; 337 } 338 run_command("SYSTEM LOG", timeout / 1000, "logcat", "-v", "threadtime", 339 "-v", "printable", 340 "-d", 341 "*:v", NULL); 342 timeout = logcat_timeout("events"); 343 if (timeout < 20000) { 344 timeout = 20000; 345 } 346 run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events", 347 "-v", "threadtime", 348 "-v", "printable", 349 "-d", 350 "*:v", NULL); 351 timeout = logcat_timeout("radio"); 352 if (timeout < 20000) { 353 timeout = 20000; 354 } 355 run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio", 356 "-v", "threadtime", 357 "-v", "printable", 358 "-d", 359 "*:v", NULL); 360 361 run_command("LOG STATISTICS", 10, "logcat", "-b", "all", "-S", NULL); 362 363 run_command("RAFT LOGS", 300, SU_PATH, "root", "logcompressor", "-r", RAFT_DIR, NULL); 364 365 /* show the traces we collected in main(), if that was done */ 366 if (dump_traces_path != NULL) { 367 dump_file("VM TRACES JUST NOW", dump_traces_path); 368 } 369 370 /* only show ANR traces if they're less than 15 minutes old */ 371 struct stat st; 372 char anr_traces_path[PATH_MAX]; 373 property_get("dalvik.vm.stack-trace-file", anr_traces_path, ""); 374 if (!anr_traces_path[0]) { 375 printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n"); 376 } else { 377 int fd = TEMP_FAILURE_RETRY(open(anr_traces_path, 378 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 379 if (fd < 0) { 380 printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno)); 381 } else { 382 dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd); 383 } 384 } 385 386 /* slow traces for slow operations */ 387 if (anr_traces_path[0] != 0) { 388 int tail = strlen(anr_traces_path)-1; 389 while (tail > 0 && anr_traces_path[tail] != '/') { 390 tail--; 391 } 392 int i = 0; 393 while (1) { 394 sprintf(anr_traces_path+tail+1, "slow%02d.txt", i); 395 if (stat(anr_traces_path, &st)) { 396 // No traces file at this index, done with the files. 397 break; 398 } 399 dump_file("VM TRACES WHEN SLOW", anr_traces_path); 400 i++; 401 } 402 } 403 404 int dumped = 0; 405 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 406 if (tombstone_data[i].fd != -1) { 407 dumped = 1; 408 dump_file_from_fd("TOMBSTONE", tombstone_data[i].name, tombstone_data[i].fd); 409 tombstone_data[i].fd = -1; 410 } 411 } 412 if (!dumped) { 413 printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR); 414 } 415 416 dump_file("NETWORK DEV INFO", "/proc/net/dev"); 417 dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all"); 418 dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt"); 419 dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl"); 420 dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats"); 421 422 if (!stat(PSTORE_LAST_KMSG, &st)) { 423 /* Also TODO: Make console-ramoops CAP_SYSLOG protected. */ 424 dump_file("LAST KMSG", PSTORE_LAST_KMSG); 425 } else { 426 /* TODO: Make last_kmsg CAP_SYSLOG protected. b/5555691 */ 427 dump_file("LAST KMSG", "/proc/last_kmsg"); 428 } 429 430 /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */ 431 run_command("LAST LOGCAT", 10, "logcat", "-L", 432 "-b", "all", 433 "-v", "threadtime", 434 "-v", "printable", 435 "-d", 436 "*:v", NULL); 437 438 /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */ 439 440 run_command("NETWORK INTERFACES", 10, "ip", "link", NULL); 441 442 run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL); 443 run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL); 444 445 run_command("IP RULES", 10, "ip", "rule", "show", NULL); 446 run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL); 447 448 dump_route_tables(); 449 450 run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL); 451 run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL); 452 453 run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL); 454 run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL); 455 run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL); 456 /* no ip6 nat */ 457 run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL); 458 run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL); 459 460 run_command("WIFI NETWORKS", 20, 461 SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL); 462 463#ifdef FWDUMP_bcmdhd 464 run_command("ND OFFLOAD TABLE", 5, 465 SU_PATH, "root", "wlutil", "nd_hostip", NULL); 466 467 run_command("DUMP WIFI INTERNAL COUNTERS (1)", 20, 468 SU_PATH, "root", "wlutil", "counters", NULL); 469 470 run_command("ND OFFLOAD STATUS (1)", 5, 471 SU_PATH, "root", "wlutil", "nd_status", NULL); 472 473#endif 474 dump_file("INTERRUPTS (1)", "/proc/interrupts"); 475 476 run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL); 477 478#ifdef FWDUMP_bcmdhd 479 run_command("DUMP WIFI STATUS", 20, 480 SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL); 481 482 run_command("DUMP WIFI INTERNAL COUNTERS (2)", 20, 483 SU_PATH, "root", "wlutil", "counters", NULL); 484 485 run_command("ND OFFLOAD STATUS (2)", 5, 486 SU_PATH, "root", "wlutil", "nd_status", NULL); 487#endif 488 dump_file("INTERRUPTS (2)", "/proc/interrupts"); 489 490 print_properties(); 491 492 run_command("VOLD DUMP", 10, "vdc", "dump", NULL); 493 run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL); 494 495 run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL); 496 497 run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL); 498 499 printf("------ BACKLIGHTS ------\n"); 500 printf("LCD brightness="); 501 dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness"); 502 printf("Button brightness="); 503 dump_file(NULL, "/sys/class/leds/button-backlight/brightness"); 504 printf("Keyboard brightness="); 505 dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness"); 506 printf("ALS mode="); 507 dump_file(NULL, "/sys/class/leds/lcd-backlight/als"); 508 printf("LCD driver registers:\n"); 509 dump_file(NULL, "/sys/class/leds/lcd-backlight/registers"); 510 printf("\n"); 511 512 /* Binder state is expensive to look at as it uses a lot of memory. */ 513 dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log"); 514 dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log"); 515 dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions"); 516 dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats"); 517 dump_file("BINDER STATE", "/sys/kernel/debug/binder/state"); 518 519 printf("========================================================\n"); 520 printf("== Board\n"); 521 printf("========================================================\n"); 522 523 dumpstate_board(); 524 printf("\n"); 525 526 /* Migrate the ril_dumpstate to a dumpstate_board()? */ 527 char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0}; 528 property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30"); 529 if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) { 530 if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) { 531 // su does not exist on user builds, so try running without it. 532 // This way any implementations of vril-dump that do not require 533 // root can run on user builds. 534 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 535 "vril-dump", NULL); 536 } else { 537 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 538 SU_PATH, "root", "vril-dump", NULL); 539 } 540 } 541 542 printf("========================================================\n"); 543 printf("== Android Framework Services\n"); 544 printf("========================================================\n"); 545 546 /* the full dumpsys is starting to take a long time, so we need 547 to increase its timeout. we really need to do the timeouts in 548 dumpsys itself... */ 549 run_command("DUMPSYS", 60, "dumpsys", NULL); 550 551 printf("========================================================\n"); 552 printf("== Checkins\n"); 553 printf("========================================================\n"); 554 555 run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL); 556 run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL); 557 run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL); 558 run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL); 559 run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL); 560 run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", NULL); 561 562 printf("========================================================\n"); 563 printf("== Running Application Activities\n"); 564 printf("========================================================\n"); 565 566 run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL); 567 568 printf("========================================================\n"); 569 printf("== Running Application Services\n"); 570 printf("========================================================\n"); 571 572 run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL); 573 574 printf("========================================================\n"); 575 printf("== Running Application Providers\n"); 576 printf("========================================================\n"); 577 578 run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL); 579 580 581 printf("========================================================\n"); 582 printf("== dumpstate: done\n"); 583 printf("========================================================\n"); 584} 585 586static void usage() { 587 fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q]\n" 588 " -o: write to file (instead of stdout)\n" 589 " -d: append date to filename (requires -o)\n" 590 " -p: capture screenshot to filename.png (requires -o)\n" 591 " -s: write output to control socket (for init)\n" 592 " -b: play sound file instead of vibrate, at beginning of job\n" 593 " -e: play sound file instead of vibrate, at end of job\n" 594 " -q: disable vibrate\n" 595 " -B: send broadcast when finished (requires -o and -p)\n" 596 ); 597} 598 599static void sigpipe_handler(int n) { 600 // don't complain to stderr or stdout 601 _exit(EXIT_FAILURE); 602} 603 604static void vibrate(FILE* vibrator, int ms) { 605 fprintf(vibrator, "%d\n", ms); 606 fflush(vibrator); 607} 608 609int main(int argc, char *argv[]) { 610 struct sigaction sigact; 611 int do_add_date = 0; 612 int do_vibrate = 1; 613 char* use_outfile = 0; 614 int use_socket = 0; 615 int do_fb = 0; 616 int do_broadcast = 0; 617 618 if (getuid() != 0) { 619 // Old versions of the adb client would call the 620 // dumpstate command directly. Newer clients 621 // call /system/bin/bugreport instead. If we detect 622 // we're being called incorrectly, then exec the 623 // correct program. 624 return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL); 625 } 626 627 ALOGI("begin\n"); 628 629 /* clear SIGPIPE handler */ 630 memset(&sigact, 0, sizeof(sigact)); 631 sigact.sa_handler = sigpipe_handler; 632 sigaction(SIGPIPE, &sigact, NULL); 633 634 /* set as high priority, and protect from OOM killer */ 635 setpriority(PRIO_PROCESS, 0, -20); 636 FILE *oom_adj = fopen("/proc/self/oom_adj", "we"); 637 if (oom_adj) { 638 fputs("-17", oom_adj); 639 fclose(oom_adj); 640 } 641 642 /* parse arguments */ 643 int c; 644 while ((c = getopt(argc, argv, "dho:svqzpB")) != -1) { 645 switch (c) { 646 case 'd': do_add_date = 1; break; 647 case 'o': use_outfile = optarg; break; 648 case 's': use_socket = 1; break; 649 case 'v': break; // compatibility no-op 650 case 'q': do_vibrate = 0; break; 651 case 'p': do_fb = 1; break; 652 case 'B': do_broadcast = 1; break; 653 case '?': printf("\n"); 654 case 'h': 655 usage(); 656 exit(1); 657 } 658 } 659 660 // If we are going to use a socket, do it as early as possible 661 // to avoid timeouts from bugreport. 662 if (use_socket) { 663 redirect_to_socket(stdout, "dumpstate"); 664 } 665 666 /* open the vibrator before dropping root */ 667 FILE *vibrator = 0; 668 if (do_vibrate) { 669 vibrator = fopen("/sys/class/timed_output/vibrator/enable", "we"); 670 if (vibrator) { 671 vibrate(vibrator, 150); 672 } 673 } 674 675 /* read /proc/cmdline before dropping root */ 676 FILE *cmdline = fopen("/proc/cmdline", "re"); 677 if (cmdline != NULL) { 678 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); 679 fclose(cmdline); 680 } 681 682 /* collect stack traces from Dalvik and native processes (needs root) */ 683 dump_traces_path = dump_traces(); 684 685 /* Get the tombstone fds here while we are running as root. */ 686 get_tombstone_fds(tombstone_data); 687 688 /* ensure we will keep capabilities when we drop root */ 689 if (prctl(PR_SET_KEEPCAPS, 1) < 0) { 690 ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); 691 return -1; 692 } 693 694 /* switch to non-root user and group */ 695 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, 696 AID_MOUNT, AID_INET, AID_NET_BW_STATS, AID_READPROC }; 697 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 698 ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); 699 return -1; 700 } 701 if (setgid(AID_SHELL) != 0) { 702 ALOGE("Unable to setgid, aborting: %s\n", strerror(errno)); 703 return -1; 704 } 705 if (setuid(AID_SHELL) != 0) { 706 ALOGE("Unable to setuid, aborting: %s\n", strerror(errno)); 707 return -1; 708 } 709 710 struct __user_cap_header_struct capheader; 711 struct __user_cap_data_struct capdata[2]; 712 memset(&capheader, 0, sizeof(capheader)); 713 memset(&capdata, 0, sizeof(capdata)); 714 capheader.version = _LINUX_CAPABILITY_VERSION_3; 715 capheader.pid = 0; 716 717 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); 718 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); 719 capdata[0].inheritable = 0; 720 capdata[1].inheritable = 0; 721 722 if (capset(&capheader, &capdata[0]) < 0) { 723 ALOGE("capset failed: %s\n", strerror(errno)); 724 return -1; 725 } 726 727 /* redirect output if needed */ 728 char path[PATH_MAX], tmp_path[PATH_MAX]; 729 pid_t gzip_pid = -1; 730 731 if (!use_socket && use_outfile) { 732 strlcpy(path, use_outfile, sizeof(path)); 733 if (do_add_date) { 734 char date[80]; 735 time_t now = time(NULL); 736 strftime(date, sizeof(date), "-%Y-%m-%d-%H-%M-%S", localtime(&now)); 737 strlcat(path, date, sizeof(path)); 738 } 739 if (do_fb) { 740 strlcpy(screenshot_path, path, sizeof(screenshot_path)); 741 strlcat(screenshot_path, ".png", sizeof(screenshot_path)); 742 } 743 strlcat(path, ".txt", sizeof(path)); 744 strlcpy(tmp_path, path, sizeof(tmp_path)); 745 strlcat(tmp_path, ".tmp", sizeof(tmp_path)); 746 redirect_to_file(stdout, tmp_path); 747 } 748 749 dumpstate(); 750 751 /* done */ 752 if (vibrator) { 753 for (int i = 0; i < 3; i++) { 754 vibrate(vibrator, 75); 755 usleep((75 + 50) * 1000); 756 } 757 fclose(vibrator); 758 } 759 760 /* wait for gzip to finish, otherwise it might get killed when we exit */ 761 if (gzip_pid > 0) { 762 fclose(stdout); 763 waitpid(gzip_pid, NULL, 0); 764 } 765 766 /* rename the (now complete) .tmp file to its final location */ 767 if (use_outfile && rename(tmp_path, path)) { 768 fprintf(stderr, "rename(%s, %s): %s\n", tmp_path, path, strerror(errno)); 769 } 770 771 /* tell activity manager we're done */ 772 if (do_broadcast && use_outfile && do_fb) { 773 run_command(NULL, 5, "/system/bin/am", "broadcast", "--user", "0", 774 "-a", "android.intent.action.BUGREPORT_FINISHED", 775 "--es", "android.intent.extra.BUGREPORT", path, 776 "--es", "android.intent.extra.SCREENSHOT", screenshot_path, 777 "--receiver-permission", "android.permission.DUMP", NULL); 778 } 779 780 ALOGI("done\n"); 781 782 return 0; 783} 784