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. */
get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES])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
dump_dev_files(const char * title,const char * driverpath,const char * filename)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
skip_not_stat(const char * path)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
dump_stat_from_fd(const char * title __unused,const char * path,int fd)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
valid_size(unsigned long value)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
property_get_size(const char * key)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 */
logcat_timeout(char * name)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 */
dumpstate()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("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL);
438 run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL);
439 run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL);
440 /* no ip6 nat */
441 run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL);
442 run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL);
443
444 run_command("WIFI NETWORKS", 20,
445 SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL);
446
447 #ifdef FWDUMP_bcmdhd
448 run_command("ND OFFLOAD TABLE", 5,
449 SU_PATH, "root", "wlutil", "nd_hostip", NULL);
450
451 run_command("DUMP WIFI INTERNAL COUNTERS (1)", 20,
452 SU_PATH, "root", "wlutil", "counters", NULL);
453
454 run_command("ND OFFLOAD STATUS (1)", 5,
455 SU_PATH, "root", "wlutil", "nd_status", NULL);
456
457 #endif
458 dump_file("INTERRUPTS (1)", "/proc/interrupts");
459
460 run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL);
461
462 #ifdef FWDUMP_bcmdhd
463 run_command("DUMP WIFI STATUS", 20,
464 SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL);
465
466 run_command("DUMP WIFI INTERNAL COUNTERS (2)", 20,
467 SU_PATH, "root", "wlutil", "counters", NULL);
468
469 run_command("ND OFFLOAD STATUS (2)", 5,
470 SU_PATH, "root", "wlutil", "nd_status", NULL);
471 #endif
472 dump_file("INTERRUPTS (2)", "/proc/interrupts");
473
474 print_properties();
475
476 run_command("VOLD DUMP", 10, "vdc", "dump", NULL);
477 run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL);
478
479 run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL);
480
481 run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL);
482
483 printf("------ BACKLIGHTS ------\n");
484 printf("LCD brightness=");
485 dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness");
486 printf("Button brightness=");
487 dump_file(NULL, "/sys/class/leds/button-backlight/brightness");
488 printf("Keyboard brightness=");
489 dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness");
490 printf("ALS mode=");
491 dump_file(NULL, "/sys/class/leds/lcd-backlight/als");
492 printf("LCD driver registers:\n");
493 dump_file(NULL, "/sys/class/leds/lcd-backlight/registers");
494 printf("\n");
495
496 /* Binder state is expensive to look at as it uses a lot of memory. */
497 dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log");
498 dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log");
499 dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions");
500 dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats");
501 dump_file("BINDER STATE", "/sys/kernel/debug/binder/state");
502
503 printf("========================================================\n");
504 printf("== Board\n");
505 printf("========================================================\n");
506
507 dumpstate_board();
508 printf("\n");
509
510 /* Migrate the ril_dumpstate to a dumpstate_board()? */
511 char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0};
512 property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30");
513 if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) {
514 if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) {
515 // su does not exist on user builds, so try running without it.
516 // This way any implementations of vril-dump that do not require
517 // root can run on user builds.
518 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout),
519 "vril-dump", NULL);
520 } else {
521 run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout),
522 SU_PATH, "root", "vril-dump", NULL);
523 }
524 }
525
526 printf("========================================================\n");
527 printf("== Android Framework Services\n");
528 printf("========================================================\n");
529
530 /* the full dumpsys is starting to take a long time, so we need
531 to increase its timeout. we really need to do the timeouts in
532 dumpsys itself... */
533 run_command("DUMPSYS", 60, "dumpsys", NULL);
534
535 printf("========================================================\n");
536 printf("== Checkins\n");
537 printf("========================================================\n");
538
539 run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL);
540 run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL);
541 run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL);
542 run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL);
543 run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL);
544 run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", NULL);
545
546 printf("========================================================\n");
547 printf("== Running Application Activities\n");
548 printf("========================================================\n");
549
550 run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL);
551
552 printf("========================================================\n");
553 printf("== Running Application Services\n");
554 printf("========================================================\n");
555
556 run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL);
557
558 printf("========================================================\n");
559 printf("== Running Application Providers\n");
560 printf("========================================================\n");
561
562 run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL);
563
564
565 printf("========================================================\n");
566 printf("== dumpstate: done\n");
567 printf("========================================================\n");
568 }
569
usage()570 static void usage() {
571 fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q]\n"
572 " -o: write to file (instead of stdout)\n"
573 " -d: append date to filename (requires -o)\n"
574 " -p: capture screenshot to filename.png (requires -o)\n"
575 " -s: write output to control socket (for init)\n"
576 " -b: play sound file instead of vibrate, at beginning of job\n"
577 " -e: play sound file instead of vibrate, at end of job\n"
578 " -q: disable vibrate\n"
579 " -B: send broadcast when finished (requires -o and -p)\n"
580 );
581 }
582
sigpipe_handler(int n)583 static void sigpipe_handler(int n) {
584 // don't complain to stderr or stdout
585 _exit(EXIT_FAILURE);
586 }
587
vibrate(FILE * vibrator,int ms)588 static void vibrate(FILE* vibrator, int ms) {
589 fprintf(vibrator, "%d\n", ms);
590 fflush(vibrator);
591 }
592
main(int argc,char * argv[])593 int main(int argc, char *argv[]) {
594 struct sigaction sigact;
595 int do_add_date = 0;
596 int do_vibrate = 1;
597 char* use_outfile = 0;
598 int use_socket = 0;
599 int do_fb = 0;
600 int do_broadcast = 0;
601
602 if (getuid() != 0) {
603 // Old versions of the adb client would call the
604 // dumpstate command directly. Newer clients
605 // call /system/bin/bugreport instead. If we detect
606 // we're being called incorrectly, then exec the
607 // correct program.
608 return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL);
609 }
610
611 ALOGI("begin\n");
612
613 /* clear SIGPIPE handler */
614 memset(&sigact, 0, sizeof(sigact));
615 sigact.sa_handler = sigpipe_handler;
616 sigaction(SIGPIPE, &sigact, NULL);
617
618 /* set as high priority, and protect from OOM killer */
619 setpriority(PRIO_PROCESS, 0, -20);
620 FILE *oom_adj = fopen("/proc/self/oom_adj", "we");
621 if (oom_adj) {
622 fputs("-17", oom_adj);
623 fclose(oom_adj);
624 }
625
626 /* parse arguments */
627 int c;
628 while ((c = getopt(argc, argv, "dho:svqzpB")) != -1) {
629 switch (c) {
630 case 'd': do_add_date = 1; break;
631 case 'o': use_outfile = optarg; break;
632 case 's': use_socket = 1; break;
633 case 'v': break; // compatibility no-op
634 case 'q': do_vibrate = 0; break;
635 case 'p': do_fb = 1; break;
636 case 'B': do_broadcast = 1; break;
637 case '?': printf("\n");
638 case 'h':
639 usage();
640 exit(1);
641 }
642 }
643
644 // If we are going to use a socket, do it as early as possible
645 // to avoid timeouts from bugreport.
646 if (use_socket) {
647 redirect_to_socket(stdout, "dumpstate");
648 }
649
650 /* open the vibrator before dropping root */
651 FILE *vibrator = 0;
652 if (do_vibrate) {
653 vibrator = fopen("/sys/class/timed_output/vibrator/enable", "we");
654 if (vibrator) {
655 vibrate(vibrator, 150);
656 }
657 }
658
659 /* read /proc/cmdline before dropping root */
660 FILE *cmdline = fopen("/proc/cmdline", "re");
661 if (cmdline != NULL) {
662 fgets(cmdline_buf, sizeof(cmdline_buf), cmdline);
663 fclose(cmdline);
664 }
665
666 /* collect stack traces from Dalvik and native processes (needs root) */
667 dump_traces_path = dump_traces();
668
669 /* Get the tombstone fds here while we are running as root. */
670 get_tombstone_fds(tombstone_data);
671
672 /* ensure we will keep capabilities when we drop root */
673 if (prctl(PR_SET_KEEPCAPS, 1) < 0) {
674 ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno));
675 return -1;
676 }
677
678 /* switch to non-root user and group */
679 gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW,
680 AID_MOUNT, AID_INET, AID_NET_BW_STATS };
681 if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) {
682 ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno));
683 return -1;
684 }
685 if (setgid(AID_SHELL) != 0) {
686 ALOGE("Unable to setgid, aborting: %s\n", strerror(errno));
687 return -1;
688 }
689 if (setuid(AID_SHELL) != 0) {
690 ALOGE("Unable to setuid, aborting: %s\n", strerror(errno));
691 return -1;
692 }
693
694 struct __user_cap_header_struct capheader;
695 struct __user_cap_data_struct capdata[2];
696 memset(&capheader, 0, sizeof(capheader));
697 memset(&capdata, 0, sizeof(capdata));
698 capheader.version = _LINUX_CAPABILITY_VERSION_3;
699 capheader.pid = 0;
700
701 capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG);
702 capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG);
703 capdata[0].inheritable = 0;
704 capdata[1].inheritable = 0;
705
706 if (capset(&capheader, &capdata[0]) < 0) {
707 ALOGE("capset failed: %s\n", strerror(errno));
708 return -1;
709 }
710
711 /* redirect output if needed */
712 char path[PATH_MAX], tmp_path[PATH_MAX];
713 pid_t gzip_pid = -1;
714
715 if (!use_socket && use_outfile) {
716 strlcpy(path, use_outfile, sizeof(path));
717 if (do_add_date) {
718 char date[80];
719 time_t now = time(NULL);
720 strftime(date, sizeof(date), "-%Y-%m-%d-%H-%M-%S", localtime(&now));
721 strlcat(path, date, sizeof(path));
722 }
723 if (do_fb) {
724 strlcpy(screenshot_path, path, sizeof(screenshot_path));
725 strlcat(screenshot_path, ".png", sizeof(screenshot_path));
726 }
727 strlcat(path, ".txt", sizeof(path));
728 strlcpy(tmp_path, path, sizeof(tmp_path));
729 strlcat(tmp_path, ".tmp", sizeof(tmp_path));
730 redirect_to_file(stdout, tmp_path);
731 }
732
733 dumpstate();
734
735 /* done */
736 if (vibrator) {
737 for (int i = 0; i < 3; i++) {
738 vibrate(vibrator, 75);
739 usleep((75 + 50) * 1000);
740 }
741 fclose(vibrator);
742 }
743
744 /* wait for gzip to finish, otherwise it might get killed when we exit */
745 if (gzip_pid > 0) {
746 fclose(stdout);
747 waitpid(gzip_pid, NULL, 0);
748 }
749
750 /* rename the (now complete) .tmp file to its final location */
751 if (use_outfile && rename(tmp_path, path)) {
752 fprintf(stderr, "rename(%s, %s): %s\n", tmp_path, path, strerror(errno));
753 }
754
755 /* tell activity manager we're done */
756 if (do_broadcast && use_outfile && do_fb) {
757 run_command(NULL, 5, "/system/bin/am", "broadcast", "--user", "0",
758 "-a", "android.intent.action.BUGREPORT_FINISHED",
759 "--es", "android.intent.extra.BUGREPORT", path,
760 "--es", "android.intent.extra.SCREENSHOT", screenshot_path,
761 "--receiver-permission", "android.permission.DUMP", NULL);
762 }
763
764 ALOGI("done\n");
765
766 return 0;
767 }
768