dumpstate.cpp revision 32a59625e0a70eb38648320ddde84e6c91cc9cef
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_emmc_ecsd("/d/mmc0/mmc0:0001/ext_csd"); 302 dump_file("MEMORY INFO", "/proc/meminfo"); 303 run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-H", NULL); 304 run_command("PROCRANK", 20, SU_PATH, "root", "procrank", NULL); 305 dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); 306 dump_file("VMALLOC INFO", "/proc/vmallocinfo"); 307 dump_file("SLAB INFO", "/proc/slabinfo"); 308 dump_file("ZONEINFO", "/proc/zoneinfo"); 309 dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); 310 dump_file("BUDDYINFO", "/proc/buddyinfo"); 311 dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); 312 313 dump_file("KERNEL WAKELOCKS", "/proc/wakelocks"); 314 dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources"); 315 dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state"); 316 dump_file("KERNEL SYNC", "/d/sync"); 317 318 run_command("PROCESSES AND THREADS", 10, "ps", "-Z", "-t", "-p", "-P", NULL); 319 run_command("LIBRANK", 10, "librank", NULL); 320 321 do_dmesg(); 322 323 run_command("LIST OF OPEN FILES", 10, SU_PATH, "root", "lsof", NULL); 324 for_each_pid(do_showmap, "SMAPS OF ALL PROCESSES"); 325 for_each_tid(show_wchan, "BLOCKED PROCESS WAIT-CHANNELS"); 326 327 if (screenshot_path[0]) { 328 ALOGI("taking screenshot\n"); 329 run_command(NULL, 10, "/system/bin/screencap", "-p", screenshot_path, NULL); 330 ALOGI("wrote screenshot: %s\n", screenshot_path); 331 } 332 333 // dump_file("EVENT LOG TAGS", "/etc/event-log-tags"); 334 // calculate timeout 335 timeout = logcat_timeout("main") + logcat_timeout("system") + logcat_timeout("crash"); 336 if (timeout < 20000) { 337 timeout = 20000; 338 } 339 run_command("SYSTEM LOG", timeout / 1000, "logcat", "-v", "threadtime", 340 "-v", "printable", 341 "-d", 342 "*:v", NULL); 343 timeout = logcat_timeout("events") + logcat_timeout("security"); 344 if (timeout < 20000) { 345 timeout = 20000; 346 } 347 run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events", 348 "-b", "security", 349 "-v", "threadtime", 350 "-v", "printable", 351 "-d", 352 "*:v", NULL); 353 timeout = logcat_timeout("radio"); 354 if (timeout < 20000) { 355 timeout = 20000; 356 } 357 run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio", 358 "-v", "threadtime", 359 "-v", "printable", 360 "-d", 361 "*:v", NULL); 362 363 run_command("LOG STATISTICS", 10, "logcat", "-b", "all", "-S", NULL); 364 365 run_command("RAFT LOGS", 600, SU_PATH, "root", "logcompressor", "-r", RAFT_DIR, NULL); 366 367 /* show the traces we collected in main(), if that was done */ 368 if (dump_traces_path != NULL) { 369 dump_file("VM TRACES JUST NOW", dump_traces_path); 370 } 371 372 /* only show ANR traces if they're less than 15 minutes old */ 373 struct stat st; 374 char anr_traces_path[PATH_MAX]; 375 property_get("dalvik.vm.stack-trace-file", anr_traces_path, ""); 376 if (!anr_traces_path[0]) { 377 printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n"); 378 } else { 379 int fd = TEMP_FAILURE_RETRY(open(anr_traces_path, 380 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 381 if (fd < 0) { 382 printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno)); 383 } else { 384 dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd); 385 } 386 } 387 388 /* slow traces for slow operations */ 389 if (anr_traces_path[0] != 0) { 390 int tail = strlen(anr_traces_path)-1; 391 while (tail > 0 && anr_traces_path[tail] != '/') { 392 tail--; 393 } 394 int i = 0; 395 while (1) { 396 sprintf(anr_traces_path+tail+1, "slow%02d.txt", i); 397 if (stat(anr_traces_path, &st)) { 398 // No traces file at this index, done with the files. 399 break; 400 } 401 dump_file("VM TRACES WHEN SLOW", anr_traces_path); 402 i++; 403 } 404 } 405 406 int dumped = 0; 407 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 408 if (tombstone_data[i].fd != -1) { 409 dumped = 1; 410 dump_file_from_fd("TOMBSTONE", tombstone_data[i].name, tombstone_data[i].fd); 411 tombstone_data[i].fd = -1; 412 } 413 } 414 if (!dumped) { 415 printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR); 416 } 417 418 dump_file("NETWORK DEV INFO", "/proc/net/dev"); 419 dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all"); 420 dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt"); 421 dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl"); 422 dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats"); 423 424 if (!stat(PSTORE_LAST_KMSG, &st)) { 425 /* Also TODO: Make console-ramoops CAP_SYSLOG protected. */ 426 dump_file("LAST KMSG", PSTORE_LAST_KMSG); 427 } else { 428 /* TODO: Make last_kmsg CAP_SYSLOG protected. b/5555691 */ 429 dump_file("LAST KMSG", "/proc/last_kmsg"); 430 } 431 432 /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */ 433 run_command("LAST LOGCAT", 10, "logcat", "-L", 434 "-b", "all", 435 "-v", "threadtime", 436 "-v", "printable", 437 "-d", 438 "*:v", NULL); 439 440 /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */ 441 442 run_command("NETWORK INTERFACES", 10, "ip", "link", NULL); 443 444 run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL); 445 run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL); 446 447 run_command("IP RULES", 10, "ip", "rule", "show", NULL); 448 run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL); 449 450 dump_route_tables(); 451 452 run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL); 453 run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL); 454 455 run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL); 456 run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL); 457 run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL); 458 /* no ip6 nat */ 459 run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL); 460 run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL); 461 462 run_command("WIFI NETWORKS", 20, 463 SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL); 464 465#ifdef FWDUMP_bcmdhd 466 run_command("ND OFFLOAD TABLE", 5, 467 SU_PATH, "root", "wlutil", "nd_hostip", NULL); 468 469 run_command("DUMP WIFI INTERNAL COUNTERS (1)", 20, 470 SU_PATH, "root", "wlutil", "counters", NULL); 471 472 run_command("ND OFFLOAD STATUS (1)", 5, 473 SU_PATH, "root", "wlutil", "nd_status", NULL); 474 475#endif 476 dump_file("INTERRUPTS (1)", "/proc/interrupts"); 477 478 run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL); 479 480#ifdef FWDUMP_bcmdhd 481 run_command("DUMP WIFI STATUS", 20, 482 SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL); 483 484 run_command("DUMP WIFI INTERNAL COUNTERS (2)", 20, 485 SU_PATH, "root", "wlutil", "counters", NULL); 486 487 run_command("ND OFFLOAD STATUS (2)", 5, 488 SU_PATH, "root", "wlutil", "nd_status", NULL); 489#endif 490 dump_file("INTERRUPTS (2)", "/proc/interrupts"); 491 492 print_properties(); 493 494 run_command("VOLD DUMP", 10, "vdc", "dump", NULL); 495 run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL); 496 497 run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL); 498 499 run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL); 500 501 printf("------ BACKLIGHTS ------\n"); 502 printf("LCD brightness="); 503 dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness"); 504 printf("Button brightness="); 505 dump_file(NULL, "/sys/class/leds/button-backlight/brightness"); 506 printf("Keyboard brightness="); 507 dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness"); 508 printf("ALS mode="); 509 dump_file(NULL, "/sys/class/leds/lcd-backlight/als"); 510 printf("LCD driver registers:\n"); 511 dump_file(NULL, "/sys/class/leds/lcd-backlight/registers"); 512 printf("\n"); 513 514 /* Binder state is expensive to look at as it uses a lot of memory. */ 515 dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log"); 516 dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log"); 517 dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions"); 518 dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats"); 519 dump_file("BINDER STATE", "/sys/kernel/debug/binder/state"); 520 521 printf("========================================================\n"); 522 printf("== Board\n"); 523 printf("========================================================\n"); 524 525 dumpstate_board(); 526 printf("\n"); 527 528 /* Migrate the ril_dumpstate to a dumpstate_board()? */ 529 char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0}; 530 property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30"); 531 if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) { 532 if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) { 533 // su does not exist on user builds, so try running without it. 534 // This way any implementations of vril-dump that do not require 535 // root can run on user builds. 536 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 537 "vril-dump", NULL); 538 } else { 539 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 540 SU_PATH, "root", "vril-dump", NULL); 541 } 542 } 543 544 printf("========================================================\n"); 545 printf("== Android Framework Services\n"); 546 printf("========================================================\n"); 547 548 /* the full dumpsys is starting to take a long time, so we need 549 to increase its timeout. we really need to do the timeouts in 550 dumpsys itself... */ 551 run_command("DUMPSYS", 60, "dumpsys", NULL); 552 553 printf("========================================================\n"); 554 printf("== Checkins\n"); 555 printf("========================================================\n"); 556 557 run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL); 558 run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL); 559 run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL); 560 run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL); 561 run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL); 562 run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", NULL); 563 564 printf("========================================================\n"); 565 printf("== Running Application Activities\n"); 566 printf("========================================================\n"); 567 568 run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL); 569 570 printf("========================================================\n"); 571 printf("== Running Application Services\n"); 572 printf("========================================================\n"); 573 574 run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL); 575 576 printf("========================================================\n"); 577 printf("== Running Application Providers\n"); 578 printf("========================================================\n"); 579 580 run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL); 581 582 583 printf("========================================================\n"); 584 printf("== dumpstate: done\n"); 585 printf("========================================================\n"); 586} 587 588static void usage() { 589 fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q]\n" 590 " -o: write to file (instead of stdout)\n" 591 " -d: append date to filename (requires -o)\n" 592 " -p: capture screenshot to filename.png (requires -o)\n" 593 " -s: write output to control socket (for init)\n" 594 " -b: play sound file instead of vibrate, at beginning of job\n" 595 " -e: play sound file instead of vibrate, at end of job\n" 596 " -q: disable vibrate\n" 597 " -B: send broadcast when finished (requires -o and -p)\n" 598 ); 599} 600 601static void sigpipe_handler(int n) { 602 // don't complain to stderr or stdout 603 _exit(EXIT_FAILURE); 604} 605 606static void vibrate(FILE* vibrator, int ms) { 607 fprintf(vibrator, "%d\n", ms); 608 fflush(vibrator); 609} 610 611int main(int argc, char *argv[]) { 612 struct sigaction sigact; 613 int do_add_date = 0; 614 int do_vibrate = 1; 615 char* use_outfile = 0; 616 int use_socket = 0; 617 int do_fb = 0; 618 int do_broadcast = 0; 619 620 if (getuid() != 0) { 621 // Old versions of the adb client would call the 622 // dumpstate command directly. Newer clients 623 // call /system/bin/bugreport instead. If we detect 624 // we're being called incorrectly, then exec the 625 // correct program. 626 return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL); 627 } 628 629 ALOGI("begin\n"); 630 631 /* clear SIGPIPE handler */ 632 memset(&sigact, 0, sizeof(sigact)); 633 sigact.sa_handler = sigpipe_handler; 634 sigaction(SIGPIPE, &sigact, NULL); 635 636 /* set as high priority, and protect from OOM killer */ 637 setpriority(PRIO_PROCESS, 0, -20); 638 FILE *oom_adj = fopen("/proc/self/oom_adj", "we"); 639 if (oom_adj) { 640 fputs("-17", oom_adj); 641 fclose(oom_adj); 642 } 643 644 /* parse arguments */ 645 int c; 646 while ((c = getopt(argc, argv, "dho:svqzpB")) != -1) { 647 switch (c) { 648 case 'd': do_add_date = 1; break; 649 case 'o': use_outfile = optarg; break; 650 case 's': use_socket = 1; break; 651 case 'v': break; // compatibility no-op 652 case 'q': do_vibrate = 0; break; 653 case 'p': do_fb = 1; break; 654 case 'B': do_broadcast = 1; break; 655 case '?': printf("\n"); 656 case 'h': 657 usage(); 658 exit(1); 659 } 660 } 661 662 // If we are going to use a socket, do it as early as possible 663 // to avoid timeouts from bugreport. 664 if (use_socket) { 665 redirect_to_socket(stdout, "dumpstate"); 666 } 667 668 /* open the vibrator before dropping root */ 669 FILE *vibrator = 0; 670 if (do_vibrate) { 671 vibrator = fopen("/sys/class/timed_output/vibrator/enable", "we"); 672 if (vibrator) { 673 vibrate(vibrator, 150); 674 } 675 } 676 677 /* read /proc/cmdline before dropping root */ 678 FILE *cmdline = fopen("/proc/cmdline", "re"); 679 if (cmdline != NULL) { 680 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); 681 fclose(cmdline); 682 } 683 684 /* collect stack traces from Dalvik and native processes (needs root) */ 685 dump_traces_path = dump_traces(); 686 687 /* Get the tombstone fds here while we are running as root. */ 688 get_tombstone_fds(tombstone_data); 689 690 /* ensure we will keep capabilities when we drop root */ 691 if (prctl(PR_SET_KEEPCAPS, 1) < 0) { 692 ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); 693 return -1; 694 } 695 696 /* switch to non-root user and group */ 697 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, 698 AID_MOUNT, AID_INET, AID_NET_BW_STATS, AID_READPROC }; 699 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 700 ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); 701 return -1; 702 } 703 if (setgid(AID_SHELL) != 0) { 704 ALOGE("Unable to setgid, aborting: %s\n", strerror(errno)); 705 return -1; 706 } 707 if (setuid(AID_SHELL) != 0) { 708 ALOGE("Unable to setuid, aborting: %s\n", strerror(errno)); 709 return -1; 710 } 711 712 struct __user_cap_header_struct capheader; 713 struct __user_cap_data_struct capdata[2]; 714 memset(&capheader, 0, sizeof(capheader)); 715 memset(&capdata, 0, sizeof(capdata)); 716 capheader.version = _LINUX_CAPABILITY_VERSION_3; 717 capheader.pid = 0; 718 719 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); 720 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); 721 capdata[0].inheritable = 0; 722 capdata[1].inheritable = 0; 723 724 if (capset(&capheader, &capdata[0]) < 0) { 725 ALOGE("capset failed: %s\n", strerror(errno)); 726 return -1; 727 } 728 729 /* redirect output if needed */ 730 char path[PATH_MAX], tmp_path[PATH_MAX]; 731 pid_t gzip_pid = -1; 732 733 if (!use_socket && use_outfile) { 734 strlcpy(path, use_outfile, sizeof(path)); 735 if (do_add_date) { 736 char date[80]; 737 time_t now = time(NULL); 738 strftime(date, sizeof(date), "-%Y-%m-%d-%H-%M-%S", localtime(&now)); 739 strlcat(path, date, sizeof(path)); 740 } 741 if (do_fb) { 742 strlcpy(screenshot_path, path, sizeof(screenshot_path)); 743 strlcat(screenshot_path, ".png", sizeof(screenshot_path)); 744 } 745 strlcat(path, ".txt", sizeof(path)); 746 strlcpy(tmp_path, path, sizeof(tmp_path)); 747 strlcat(tmp_path, ".tmp", sizeof(tmp_path)); 748 redirect_to_file(stdout, tmp_path); 749 } 750 751 dumpstate(); 752 753 /* done */ 754 if (vibrator) { 755 for (int i = 0; i < 3; i++) { 756 vibrate(vibrator, 75); 757 usleep((75 + 50) * 1000); 758 } 759 fclose(vibrator); 760 } 761 762 /* wait for gzip to finish, otherwise it might get killed when we exit */ 763 if (gzip_pid > 0) { 764 fclose(stdout); 765 waitpid(gzip_pid, NULL, 0); 766 } 767 768 /* rename the (now complete) .tmp file to its final location */ 769 if (use_outfile && rename(tmp_path, path)) { 770 fprintf(stderr, "rename(%s, %s): %s\n", tmp_path, path, strerror(errno)); 771 } 772 773 /* tell activity manager we're done */ 774 if (do_broadcast && use_outfile && do_fb) { 775 run_command(NULL, 5, "/system/bin/am", "broadcast", "--user", "0", 776 "-a", "android.intent.action.BUGREPORT_FINISHED", 777 "--es", "android.intent.extra.BUGREPORT", path, 778 "--es", "android.intent.extra.SCREENSHOT", screenshot_path, 779 "--receiver-permission", "android.permission.DUMP", NULL); 780 } 781 782 ALOGI("done\n"); 783 784 return 0; 785} 786