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 */ 43 static char cmdline_buf[16384] = "(unknown)"; 44 static const char *dump_traces_path = NULL; 45 46 static char screenshot_path[PATH_MAX] = ""; 47 48 #define PSTORE_LAST_KMSG "/sys/fs/pstore/console-ramoops" 49 50 #define TOMBSTONE_DIR "/data/tombstones" 51 #define TOMBSTONE_FILE_PREFIX TOMBSTONE_DIR "/tombstone_" 52 /* Can accomodate a tombstone number up to 9999. */ 53 #define TOMBSTONE_MAX_LEN (sizeof(TOMBSTONE_FILE_PREFIX) + 4) 54 #define NUM_TOMBSTONES 10 55 56 typedef struct { 57 char name[TOMBSTONE_MAX_LEN]; 58 int fd; 59 } tombstone_data_t; 60 61 static tombstone_data_t tombstone_data[NUM_TOMBSTONES]; 62 63 /* Get the fds of any tombstone that was modified in the last half an hour. */ 64 static void get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES]) { 65 time_t thirty_minutes_ago = time(NULL) - 60*30; 66 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 67 snprintf(data[i].name, sizeof(data[i].name), "%s%02zu", TOMBSTONE_FILE_PREFIX, i); 68 int fd = TEMP_FAILURE_RETRY(open(data[i].name, 69 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 70 struct stat st; 71 if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) && 72 (time_t) st.st_mtime >= thirty_minutes_ago) { 73 data[i].fd = fd; 74 } else { 75 close(fd); 76 data[i].fd = -1; 77 } 78 } 79 } 80 81 static void dump_dev_files(const char *title, const char *driverpath, const char *filename) 82 { 83 DIR *d; 84 struct dirent *de; 85 char path[PATH_MAX]; 86 87 d = opendir(driverpath); 88 if (d == NULL) { 89 return; 90 } 91 92 while ((de = readdir(d))) { 93 if (de->d_type != DT_LNK) { 94 continue; 95 } 96 snprintf(path, sizeof(path), "%s/%s/%s", driverpath, de->d_name, filename); 97 dump_file(title, path); 98 } 99 100 closedir(d); 101 } 102 103 static bool skip_not_stat(const char *path) { 104 static const char stat[] = "/stat"; 105 size_t len = strlen(path); 106 if (path[len - 1] == '/') { /* Directory? */ 107 return false; 108 } 109 return strcmp(path + len - sizeof(stat) + 1, stat); /* .../stat? */ 110 } 111 112 static const char mmcblk0[] = "/sys/block/mmcblk0/"; 113 unsigned long worst_write_perf = 20000; /* in KB/s */ 114 115 static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) { 116 unsigned long fields[11], read_perf, write_perf; 117 bool z; 118 char *cp, *buffer = NULL; 119 size_t i = 0; 120 FILE *fp = fdopen(fd, "rb"); 121 getline(&buffer, &i, fp); 122 fclose(fp); 123 if (!buffer) { 124 return -errno; 125 } 126 i = strlen(buffer); 127 while ((i > 0) && (buffer[i - 1] == '\n')) { 128 buffer[--i] = '\0'; 129 } 130 if (!*buffer) { 131 free(buffer); 132 return 0; 133 } 134 z = true; 135 for (cp = buffer, i = 0; i < (sizeof(fields) / sizeof(fields[0])); ++i) { 136 fields[i] = strtol(cp, &cp, 0); 137 if (fields[i] != 0) { 138 z = false; 139 } 140 } 141 if (z) { /* never accessed */ 142 free(buffer); 143 return 0; 144 } 145 146 if (!strncmp(path, mmcblk0, sizeof(mmcblk0) - 1)) { 147 path += sizeof(mmcblk0) - 1; 148 } 149 150 printf("%s: %s\n", path, buffer); 151 free(buffer); 152 153 read_perf = 0; 154 if (fields[3]) { 155 read_perf = 512 * fields[2] / fields[3]; 156 } 157 write_perf = 0; 158 if (fields[7]) { 159 write_perf = 512 * fields[6] / fields[7]; 160 } 161 printf("%s: read: %luKB/s write: %luKB/s\n", path, read_perf, write_perf); 162 if ((write_perf > 1) && (write_perf < worst_write_perf)) { 163 worst_write_perf = write_perf; 164 } 165 return 0; 166 } 167 168 /* Copied policy from system/core/logd/LogBuffer.cpp */ 169 170 #define LOG_BUFFER_SIZE (256 * 1024) 171 #define LOG_BUFFER_MIN_SIZE (64 * 1024UL) 172 #define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL) 173 174 static bool valid_size(unsigned long value) { 175 if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) { 176 return false; 177 } 178 179 long pages = sysconf(_SC_PHYS_PAGES); 180 if (pages < 1) { 181 return true; 182 } 183 184 long pagesize = sysconf(_SC_PAGESIZE); 185 if (pagesize <= 1) { 186 pagesize = PAGE_SIZE; 187 } 188 189 // maximum memory impact a somewhat arbitrary ~3% 190 pages = (pages + 31) / 32; 191 unsigned long maximum = pages * pagesize; 192 193 if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) { 194 return true; 195 } 196 197 return value <= maximum; 198 } 199 200 static unsigned long property_get_size(const char *key) { 201 unsigned long value; 202 char *cp, property[PROPERTY_VALUE_MAX]; 203 204 property_get(key, property, ""); 205 value = strtoul(property, &cp, 10); 206 207 switch(*cp) { 208 case 'm': 209 case 'M': 210 value *= 1024; 211 /* FALLTHRU */ 212 case 'k': 213 case 'K': 214 value *= 1024; 215 /* FALLTHRU */ 216 case '\0': 217 break; 218 219 default: 220 value = 0; 221 } 222 223 if (!valid_size(value)) { 224 value = 0; 225 } 226 227 return value; 228 } 229 230 /* timeout in ms */ 231 static unsigned long logcat_timeout(char *name) { 232 static const char global_tuneable[] = "persist.logd.size"; // Settings App 233 static const char global_default[] = "ro.logd.size"; // BoardConfig.mk 234 char key[PROP_NAME_MAX]; 235 unsigned long property_size, default_size; 236 237 default_size = property_get_size(global_tuneable); 238 if (!default_size) { 239 default_size = property_get_size(global_default); 240 } 241 242 snprintf(key, sizeof(key), "%s.%s", global_tuneable, name); 243 property_size = property_get_size(key); 244 245 if (!property_size) { 246 snprintf(key, sizeof(key), "%s.%s", global_default, name); 247 property_size = property_get_size(key); 248 } 249 250 if (!property_size) { 251 property_size = default_size; 252 } 253 254 if (!property_size) { 255 property_size = LOG_BUFFER_SIZE; 256 } 257 258 /* Engineering margin is ten-fold our guess */ 259 return 10 * (property_size + worst_write_perf) / worst_write_perf; 260 } 261 262 /* End copy from system/core/logd/LogBuffer.cpp */ 263 264 /* dumps the current system state to stdout */ 265 static void dumpstate() { 266 unsigned long timeout; 267 time_t now = time(NULL); 268 char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX]; 269 char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX]; 270 char network[PROPERTY_VALUE_MAX], date[80]; 271 char build_type[PROPERTY_VALUE_MAX]; 272 273 property_get("ro.build.display.id", build, "(unknown)"); 274 property_get("ro.build.fingerprint", fingerprint, "(unknown)"); 275 property_get("ro.build.type", build_type, "(unknown)"); 276 property_get("ro.baseband", radio, "(unknown)"); 277 property_get("ro.bootloader", bootloader, "(unknown)"); 278 property_get("gsm.operator.alpha", network, "(unknown)"); 279 strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&now)); 280 281 printf("========================================================\n"); 282 printf("== dumpstate: %s\n", date); 283 printf("========================================================\n"); 284 285 printf("\n"); 286 printf("Build: %s\n", build); 287 printf("Build fingerprint: '%s'\n", fingerprint); /* format is important for other tools */ 288 printf("Bootloader: %s\n", bootloader); 289 printf("Radio: %s\n", radio); 290 printf("Network: %s\n", network); 291 292 printf("Kernel: "); 293 dump_file(NULL, "/proc/version"); 294 printf("Command line: %s\n", strtok(cmdline_buf, "\n")); 295 printf("\n"); 296 297 dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version"); 298 run_command("UPTIME", 10, "uptime", NULL); 299 dump_files("UPTIME MMC PERF", mmcblk0, skip_not_stat, dump_stat_from_fd); 300 dump_file("MEMORY INFO", "/proc/meminfo"); 301 run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-t", NULL); 302 run_command("PROCRANK", 20, "procrank", NULL); 303 dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); 304 dump_file("VMALLOC INFO", "/proc/vmallocinfo"); 305 dump_file("SLAB INFO", "/proc/slabinfo"); 306 dump_file("ZONEINFO", "/proc/zoneinfo"); 307 dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); 308 dump_file("BUDDYINFO", "/proc/buddyinfo"); 309 dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); 310 311 dump_file("KERNEL WAKELOCKS", "/proc/wakelocks"); 312 dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources"); 313 dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state"); 314 dump_file("KERNEL SYNC", "/d/sync"); 315 316 run_command("PROCESSES", 10, "ps", "-P", NULL); 317 run_command("PROCESSES AND THREADS", 10, "ps", "-t", "-p", "-P", NULL); 318 run_command("PROCESSES (SELINUX LABELS)", 10, "ps", "-Z", 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", "-d", "*:v", NULL); 340 timeout = logcat_timeout("events"); 341 if (timeout < 20000) { 342 timeout = 20000; 343 } 344 run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events", "-v", "threadtime", "-d", "*:v", NULL); 345 timeout = logcat_timeout("radio"); 346 if (timeout < 20000) { 347 timeout = 20000; 348 } 349 run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio", "-v", "threadtime", "-d", "*:v", NULL); 350 351 run_command("LOG STATISTICS", 10, "logcat", "-b", "all", "-S", NULL); 352 353 /* show the traces we collected in main(), if that was done */ 354 if (dump_traces_path != NULL) { 355 dump_file("VM TRACES JUST NOW", dump_traces_path); 356 } 357 358 /* only show ANR traces if they're less than 15 minutes old */ 359 struct stat st; 360 char anr_traces_path[PATH_MAX]; 361 property_get("dalvik.vm.stack-trace-file", anr_traces_path, ""); 362 if (!anr_traces_path[0]) { 363 printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n"); 364 } else { 365 int fd = TEMP_FAILURE_RETRY(open(anr_traces_path, 366 O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK)); 367 if (fd < 0) { 368 printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno)); 369 } else { 370 dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd); 371 } 372 } 373 374 /* slow traces for slow operations */ 375 if (anr_traces_path[0] != 0) { 376 int tail = strlen(anr_traces_path)-1; 377 while (tail > 0 && anr_traces_path[tail] != '/') { 378 tail--; 379 } 380 int i = 0; 381 while (1) { 382 sprintf(anr_traces_path+tail+1, "slow%02d.txt", i); 383 if (stat(anr_traces_path, &st)) { 384 // No traces file at this index, done with the files. 385 break; 386 } 387 dump_file("VM TRACES WHEN SLOW", anr_traces_path); 388 i++; 389 } 390 } 391 392 int dumped = 0; 393 for (size_t i = 0; i < NUM_TOMBSTONES; i++) { 394 if (tombstone_data[i].fd != -1) { 395 dumped = 1; 396 dump_file_from_fd("TOMBSTONE", tombstone_data[i].name, tombstone_data[i].fd); 397 tombstone_data[i].fd = -1; 398 } 399 } 400 if (!dumped) { 401 printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR); 402 } 403 404 dump_file("NETWORK DEV INFO", "/proc/net/dev"); 405 dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all"); 406 dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt"); 407 dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl"); 408 dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats"); 409 410 if (!stat(PSTORE_LAST_KMSG, &st)) { 411 /* Also TODO: Make console-ramoops CAP_SYSLOG protected. */ 412 dump_file("LAST KMSG", PSTORE_LAST_KMSG); 413 } else { 414 /* TODO: Make last_kmsg CAP_SYSLOG protected. b/5555691 */ 415 dump_file("LAST KMSG", "/proc/last_kmsg"); 416 } 417 418 /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */ 419 run_command("LAST LOGCAT", 10, "logcat", "-L", "-v", "threadtime", 420 "-b", "all", "-d", "*:v", NULL); 421 422 /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */ 423 424 run_command("NETWORK INTERFACES", 10, "ip", "link", NULL); 425 426 run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL); 427 run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL); 428 429 run_command("IP RULES", 10, "ip", "rule", "show", NULL); 430 run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL); 431 432 dump_route_tables(); 433 434 run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL); 435 run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL); 436 437 run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL); 438 439 run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL); 440 run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL); 441 run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL); 442 /* no ip6 nat */ 443 run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL); 444 run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL); 445 446 run_command("WIFI NETWORKS", 20, 447 SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL); 448 449 #ifdef FWDUMP_bcmdhd 450 run_command("DUMP WIFI INTERNAL COUNTERS", 20, 451 SU_PATH, "root", "wlutil", "counters", NULL); 452 #endif 453 dump_file("INTERRUPTS (1)", "/proc/interrupts"); 454 455 property_get("dhcp.wlan0.gateway", network, ""); 456 if (network[0]) 457 run_command("PING GATEWAY", 10, "ping", "-c", "3", "-i", ".5", network, NULL); 458 property_get("dhcp.wlan0.dns1", network, ""); 459 if (network[0]) 460 run_command("PING DNS1", 10, "ping", "-c", "3", "-i", ".5", network, NULL); 461 property_get("dhcp.wlan0.dns2", network, ""); 462 if (network[0]) 463 run_command("PING DNS2", 10, "ping", "-c", "3", "-i", ".5", network, NULL); 464 #ifdef FWDUMP_bcmdhd 465 run_command("DUMP WIFI STATUS", 20, 466 SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL); 467 run_command("DUMP WIFI INTERNAL COUNTERS", 20, 468 SU_PATH, "root", "wlutil", "counters", NULL); 469 #endif 470 dump_file("INTERRUPTS (2)", "/proc/interrupts"); 471 472 print_properties(); 473 474 run_command("VOLD DUMP", 10, "vdc", "dump", NULL); 475 run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL); 476 477 run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL); 478 479 run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL); 480 481 printf("------ BACKLIGHTS ------\n"); 482 printf("LCD brightness="); 483 dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness"); 484 printf("Button brightness="); 485 dump_file(NULL, "/sys/class/leds/button-backlight/brightness"); 486 printf("Keyboard brightness="); 487 dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness"); 488 printf("ALS mode="); 489 dump_file(NULL, "/sys/class/leds/lcd-backlight/als"); 490 printf("LCD driver registers:\n"); 491 dump_file(NULL, "/sys/class/leds/lcd-backlight/registers"); 492 printf("\n"); 493 494 /* Binder state is expensive to look at as it uses a lot of memory. */ 495 dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log"); 496 dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log"); 497 dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions"); 498 dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats"); 499 dump_file("BINDER STATE", "/sys/kernel/debug/binder/state"); 500 501 printf("========================================================\n"); 502 printf("== Board\n"); 503 printf("========================================================\n"); 504 505 dumpstate_board(); 506 printf("\n"); 507 508 /* Migrate the ril_dumpstate to a dumpstate_board()? */ 509 char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0}; 510 property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30"); 511 if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) { 512 if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) { 513 // su does not exist on user builds, so try running without it. 514 // This way any implementations of vril-dump that do not require 515 // root can run on user builds. 516 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 517 "vril-dump", NULL); 518 } else { 519 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), 520 SU_PATH, "root", "vril-dump", NULL); 521 } 522 } 523 524 printf("========================================================\n"); 525 printf("== Android Framework Services\n"); 526 printf("========================================================\n"); 527 528 /* the full dumpsys is starting to take a long time, so we need 529 to increase its timeout. we really need to do the timeouts in 530 dumpsys itself... */ 531 run_command("DUMPSYS", 60, "dumpsys", NULL); 532 533 printf("========================================================\n"); 534 printf("== Checkins\n"); 535 printf("========================================================\n"); 536 537 run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL); 538 run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL); 539 run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL); 540 run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL); 541 run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL); 542 run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", NULL); 543 544 printf("========================================================\n"); 545 printf("== Running Application Activities\n"); 546 printf("========================================================\n"); 547 548 run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL); 549 550 printf("========================================================\n"); 551 printf("== Running Application Services\n"); 552 printf("========================================================\n"); 553 554 run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL); 555 556 printf("========================================================\n"); 557 printf("== Running Application Providers\n"); 558 printf("========================================================\n"); 559 560 run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL); 561 562 563 printf("========================================================\n"); 564 printf("== dumpstate: done\n"); 565 printf("========================================================\n"); 566 } 567 568 static void usage() { 569 fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q]\n" 570 " -o: write to file (instead of stdout)\n" 571 " -d: append date to filename (requires -o)\n" 572 " -p: capture screenshot to filename.png (requires -o)\n" 573 " -s: write output to control socket (for init)\n" 574 " -b: play sound file instead of vibrate, at beginning of job\n" 575 " -e: play sound file instead of vibrate, at end of job\n" 576 " -q: disable vibrate\n" 577 " -B: send broadcast when finished (requires -o and -p)\n" 578 ); 579 } 580 581 static void sigpipe_handler(int n) { 582 // don't complain to stderr or stdout 583 _exit(EXIT_FAILURE); 584 } 585 586 static void vibrate(FILE* vibrator, int ms) { 587 fprintf(vibrator, "%d\n", ms); 588 fflush(vibrator); 589 } 590 591 int main(int argc, char *argv[]) { 592 struct sigaction sigact; 593 int do_add_date = 0; 594 int do_vibrate = 1; 595 char* use_outfile = 0; 596 int use_socket = 0; 597 int do_fb = 0; 598 int do_broadcast = 0; 599 600 if (getuid() != 0) { 601 // Old versions of the adb client would call the 602 // dumpstate command directly. Newer clients 603 // call /system/bin/bugreport instead. If we detect 604 // we're being called incorrectly, then exec the 605 // correct program. 606 return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL); 607 } 608 609 ALOGI("begin\n"); 610 611 /* clear SIGPIPE handler */ 612 memset(&sigact, 0, sizeof(sigact)); 613 sigact.sa_handler = sigpipe_handler; 614 sigaction(SIGPIPE, &sigact, NULL); 615 616 /* set as high priority, and protect from OOM killer */ 617 setpriority(PRIO_PROCESS, 0, -20); 618 FILE *oom_adj = fopen("/proc/self/oom_adj", "we"); 619 if (oom_adj) { 620 fputs("-17", oom_adj); 621 fclose(oom_adj); 622 } 623 624 /* parse arguments */ 625 int c; 626 while ((c = getopt(argc, argv, "dho:svqzpB")) != -1) { 627 switch (c) { 628 case 'd': do_add_date = 1; break; 629 case 'o': use_outfile = optarg; break; 630 case 's': use_socket = 1; break; 631 case 'v': break; // compatibility no-op 632 case 'q': do_vibrate = 0; break; 633 case 'p': do_fb = 1; break; 634 case 'B': do_broadcast = 1; break; 635 case '?': printf("\n"); 636 case 'h': 637 usage(); 638 exit(1); 639 } 640 } 641 642 // If we are going to use a socket, do it as early as possible 643 // to avoid timeouts from bugreport. 644 if (use_socket) { 645 redirect_to_socket(stdout, "dumpstate"); 646 } 647 648 /* open the vibrator before dropping root */ 649 FILE *vibrator = 0; 650 if (do_vibrate) { 651 vibrator = fopen("/sys/class/timed_output/vibrator/enable", "we"); 652 if (vibrator) { 653 vibrate(vibrator, 150); 654 } 655 } 656 657 /* read /proc/cmdline before dropping root */ 658 FILE *cmdline = fopen("/proc/cmdline", "re"); 659 if (cmdline != NULL) { 660 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); 661 fclose(cmdline); 662 } 663 664 /* collect stack traces from Dalvik and native processes (needs root) */ 665 dump_traces_path = dump_traces(); 666 667 /* Get the tombstone fds here while we are running as root. */ 668 get_tombstone_fds(tombstone_data); 669 670 /* ensure we will keep capabilities when we drop root */ 671 if (prctl(PR_SET_KEEPCAPS, 1) < 0) { 672 ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); 673 return -1; 674 } 675 676 /* switch to non-root user and group */ 677 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, 678 AID_MOUNT, AID_INET, AID_NET_BW_STATS }; 679 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { 680 ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); 681 return -1; 682 } 683 if (setgid(AID_SHELL) != 0) { 684 ALOGE("Unable to setgid, aborting: %s\n", strerror(errno)); 685 return -1; 686 } 687 if (setuid(AID_SHELL) != 0) { 688 ALOGE("Unable to setuid, aborting: %s\n", strerror(errno)); 689 return -1; 690 } 691 692 struct __user_cap_header_struct capheader; 693 struct __user_cap_data_struct capdata[2]; 694 memset(&capheader, 0, sizeof(capheader)); 695 memset(&capdata, 0, sizeof(capdata)); 696 capheader.version = _LINUX_CAPABILITY_VERSION_3; 697 capheader.pid = 0; 698 699 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); 700 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); 701 capdata[0].inheritable = 0; 702 capdata[1].inheritable = 0; 703 704 if (capset(&capheader, &capdata[0]) < 0) { 705 ALOGE("capset failed: %s\n", strerror(errno)); 706 return -1; 707 } 708 709 /* redirect output if needed */ 710 char path[PATH_MAX], tmp_path[PATH_MAX]; 711 pid_t gzip_pid = -1; 712 713 if (!use_socket && use_outfile) { 714 strlcpy(path, use_outfile, sizeof(path)); 715 if (do_add_date) { 716 char date[80]; 717 time_t now = time(NULL); 718 strftime(date, sizeof(date), "-%Y-%m-%d-%H-%M-%S", localtime(&now)); 719 strlcat(path, date, sizeof(path)); 720 } 721 if (do_fb) { 722 strlcpy(screenshot_path, path, sizeof(screenshot_path)); 723 strlcat(screenshot_path, ".png", sizeof(screenshot_path)); 724 } 725 strlcat(path, ".txt", sizeof(path)); 726 strlcpy(tmp_path, path, sizeof(tmp_path)); 727 strlcat(tmp_path, ".tmp", sizeof(tmp_path)); 728 redirect_to_file(stdout, tmp_path); 729 } 730 731 dumpstate(); 732 733 /* done */ 734 if (vibrator) { 735 for (int i = 0; i < 3; i++) { 736 vibrate(vibrator, 75); 737 usleep((75 + 50) * 1000); 738 } 739 fclose(vibrator); 740 } 741 742 /* wait for gzip to finish, otherwise it might get killed when we exit */ 743 if (gzip_pid > 0) { 744 fclose(stdout); 745 waitpid(gzip_pid, NULL, 0); 746 } 747 748 /* rename the (now complete) .tmp file to its final location */ 749 if (use_outfile && rename(tmp_path, path)) { 750 fprintf(stderr, "rename(%s, %s): %s\n", tmp_path, path, strerror(errno)); 751 } 752 753 /* tell activity manager we're done */ 754 if (do_broadcast && use_outfile && do_fb) { 755 run_command(NULL, 5, "/system/bin/am", "broadcast", "--user", "0", 756 "-a", "android.intent.action.BUGREPORT_FINISHED", 757 "--es", "android.intent.extra.BUGREPORT", path, 758 "--es", "android.intent.extra.SCREENSHOT", screenshot_path, 759 "--receiver-permission", "android.permission.DUMP", NULL); 760 } 761 762 ALOGI("done\n"); 763 764 return 0; 765 } 766
