|  | /* | 
|  | * Copyright (C) 2008 The Android Open Source Project | 
|  | * | 
|  | * Licensed under the Apache License, Version 2.0 (the "License"); | 
|  | * you may not use this file except in compliance with the License. | 
|  | * You may obtain a copy of the License at | 
|  | * | 
|  | *      http://www.apache.org/licenses/LICENSE-2.0 | 
|  | * | 
|  | * Unless required by applicable law or agreed to in writing, software | 
|  | * distributed under the License is distributed on an "AS IS" BASIS, | 
|  | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
|  | * See the License for the specific language governing permissions and | 
|  | * limitations under the License. | 
|  | */ | 
|  |  | 
|  | #include <dirent.h> | 
|  | #include <errno.h> | 
|  | #include <fcntl.h> | 
|  | #include <limits.h> | 
|  | #include <stdio.h> | 
|  | #include <stdlib.h> | 
|  | #include <string.h> | 
|  | #include <sys/capability.h> | 
|  | #include <sys/prctl.h> | 
|  | #include <sys/resource.h> | 
|  | #include <sys/stat.h> | 
|  | #include <sys/time.h> | 
|  | #include <sys/wait.h> | 
|  | #include <unistd.h> | 
|  |  | 
|  | #include <cutils/properties.h> | 
|  |  | 
|  | #include "private/android_filesystem_config.h" | 
|  |  | 
|  | #define LOG_TAG "dumpstate" | 
|  | #include <cutils/log.h> | 
|  |  | 
|  | #include "dumpstate.h" | 
|  |  | 
|  | /* read before root is shed */ | 
|  | static char cmdline_buf[16384] = "(unknown)"; | 
|  | static const char *dump_traces_path = NULL; | 
|  |  | 
|  | static char screenshot_path[PATH_MAX] = ""; | 
|  |  | 
|  | #define PSTORE_LAST_KMSG "/sys/fs/pstore/console-ramoops" | 
|  |  | 
|  | #define TOMBSTONE_DIR "/data/tombstones" | 
|  | #define TOMBSTONE_FILE_PREFIX TOMBSTONE_DIR "/tombstone_" | 
|  | /* Can accomodate a tombstone number up to 9999. */ | 
|  | #define TOMBSTONE_MAX_LEN (sizeof(TOMBSTONE_FILE_PREFIX) + 4) | 
|  | #define NUM_TOMBSTONES  10 | 
|  |  | 
|  | typedef struct { | 
|  | char name[TOMBSTONE_MAX_LEN]; | 
|  | int fd; | 
|  | } tombstone_data_t; | 
|  |  | 
|  | static tombstone_data_t tombstone_data[NUM_TOMBSTONES]; | 
|  |  | 
|  | /* Get the fds of any tombstone that was modified in the last half an hour. */ | 
|  | static void get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES]) { | 
|  | time_t thirty_minutes_ago = time(NULL) - 60*30; | 
|  | for (size_t i = 0; i < NUM_TOMBSTONES; i++) { | 
|  | snprintf(data[i].name, sizeof(data[i].name), "%s%02zu", TOMBSTONE_FILE_PREFIX, i); | 
|  | int fd = open(data[i].name, O_RDONLY | O_CLOEXEC | O_NOFOLLOW); | 
|  | struct stat st; | 
|  | if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) && | 
|  | (time_t) st.st_mtime >= thirty_minutes_ago) { | 
|  | data[i].fd = fd; | 
|  | } else { | 
|  | close(fd); | 
|  | data[i].fd = -1; | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | static void dump_dev_files(const char *title, const char *driverpath, const char *filename) | 
|  | { | 
|  | DIR *d; | 
|  | struct dirent *de; | 
|  | char path[PATH_MAX]; | 
|  |  | 
|  | d = opendir(driverpath); | 
|  | if (d == NULL) { | 
|  | return; | 
|  | } | 
|  |  | 
|  | while ((de = readdir(d))) { | 
|  | if (de->d_type != DT_LNK) { | 
|  | continue; | 
|  | } | 
|  | snprintf(path, sizeof(path), "%s/%s/%s", driverpath, de->d_name, filename); | 
|  | dump_file(title, path); | 
|  | } | 
|  |  | 
|  | closedir(d); | 
|  | } | 
|  |  | 
|  | /* dumps the current system state to stdout */ | 
|  | static void dumpstate() { | 
|  | time_t now = time(NULL); | 
|  | char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX]; | 
|  | char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX]; | 
|  | char network[PROPERTY_VALUE_MAX], date[80]; | 
|  | char build_type[PROPERTY_VALUE_MAX]; | 
|  |  | 
|  | property_get("ro.build.display.id", build, "(unknown)"); | 
|  | property_get("ro.build.fingerprint", fingerprint, "(unknown)"); | 
|  | property_get("ro.build.type", build_type, "(unknown)"); | 
|  | property_get("ro.baseband", radio, "(unknown)"); | 
|  | property_get("ro.bootloader", bootloader, "(unknown)"); | 
|  | property_get("gsm.operator.alpha", network, "(unknown)"); | 
|  | strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&now)); | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== dumpstate: %s\n", date); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | printf("\n"); | 
|  | printf("Build: %s\n", build); | 
|  | printf("Build fingerprint: '%s'\n", fingerprint); /* format is important for other tools */ | 
|  | printf("Bootloader: %s\n", bootloader); | 
|  | printf("Radio: %s\n", radio); | 
|  | printf("Network: %s\n", network); | 
|  |  | 
|  | printf("Kernel: "); | 
|  | dump_file(NULL, "/proc/version"); | 
|  | printf("Command line: %s\n", strtok(cmdline_buf, "\n")); | 
|  | printf("\n"); | 
|  |  | 
|  | dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version"); | 
|  | run_command("UPTIME", 10, "uptime", NULL); | 
|  | dump_file("MMC PERF", "/sys/block/mmcblk0/stat"); | 
|  | dump_file("MEMORY INFO", "/proc/meminfo"); | 
|  | run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-t", NULL); | 
|  | run_command("PROCRANK", 20, "procrank", NULL); | 
|  | dump_file("VIRTUAL MEMORY STATS", "/proc/vmstat"); | 
|  | dump_file("VMALLOC INFO", "/proc/vmallocinfo"); | 
|  | dump_file("SLAB INFO", "/proc/slabinfo"); | 
|  | dump_file("ZONEINFO", "/proc/zoneinfo"); | 
|  | dump_file("PAGETYPEINFO", "/proc/pagetypeinfo"); | 
|  | dump_file("BUDDYINFO", "/proc/buddyinfo"); | 
|  | dump_file("FRAGMENTATION INFO", "/d/extfrag/unusable_index"); | 
|  |  | 
|  | dump_file("KERNEL WAKELOCKS", "/proc/wakelocks"); | 
|  | dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources"); | 
|  | dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state"); | 
|  | dump_file("KERNEL SYNC", "/d/sync"); | 
|  | dump_file("KERNEL BLUEDROID", "/d/bluedroid"); | 
|  |  | 
|  | run_command("PROCESSES", 10, "ps", "-P", NULL); | 
|  | run_command("PROCESSES AND THREADS", 10, "ps", "-t", "-p", "-P", NULL); | 
|  | run_command("PROCESSES (SELINUX LABELS)", 10, "ps", "-Z", NULL); | 
|  | run_command("LIBRANK", 10, "librank", NULL); | 
|  |  | 
|  | do_dmesg(); | 
|  |  | 
|  | run_command("LIST OF OPEN FILES", 10, SU_PATH, "root", "lsof", NULL); | 
|  | for_each_pid(do_showmap, "SMAPS OF ALL PROCESSES"); | 
|  | for_each_tid(show_wchan, "BLOCKED PROCESS WAIT-CHANNELS"); | 
|  |  | 
|  | if (screenshot_path[0]) { | 
|  | ALOGI("taking screenshot\n"); | 
|  | run_command(NULL, 10, "/system/bin/screencap", "-p", screenshot_path, NULL); | 
|  | ALOGI("wrote screenshot: %s\n", screenshot_path); | 
|  | } | 
|  |  | 
|  | // dump_file("EVENT LOG TAGS", "/etc/event-log-tags"); | 
|  | run_command("SYSTEM LOG", 20, "logcat", "-v", "threadtime", "-d", "*:v", NULL); | 
|  | run_command("EVENT LOG", 20, "logcat", "-b", "events", "-v", "threadtime", "-d", "*:v", NULL); | 
|  | run_command("RADIO LOG", 20, "logcat", "-b", "radio", "-v", "threadtime", "-d", "*:v", NULL); | 
|  |  | 
|  | /* show the traces we collected in main(), if that was done */ | 
|  | if (dump_traces_path != NULL) { | 
|  | dump_file("VM TRACES JUST NOW", dump_traces_path); | 
|  | } | 
|  |  | 
|  | /* only show ANR traces if they're less than 15 minutes old */ | 
|  | struct stat st; | 
|  | char anr_traces_path[PATH_MAX]; | 
|  | property_get("dalvik.vm.stack-trace-file", anr_traces_path, ""); | 
|  | if (!anr_traces_path[0]) { | 
|  | printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n"); | 
|  | } else { | 
|  | int fd = open(anr_traces_path, O_RDONLY | O_CLOEXEC | O_NOFOLLOW); | 
|  | if (fd < 0) { | 
|  | printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno)); | 
|  | } else { | 
|  | dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd); | 
|  | } | 
|  | } | 
|  |  | 
|  | /* slow traces for slow operations */ | 
|  | if (anr_traces_path[0] != 0) { | 
|  | int tail = strlen(anr_traces_path)-1; | 
|  | while (tail > 0 && anr_traces_path[tail] != '/') { | 
|  | tail--; | 
|  | } | 
|  | int i = 0; | 
|  | while (1) { | 
|  | sprintf(anr_traces_path+tail+1, "slow%02d.txt", i); | 
|  | if (stat(anr_traces_path, &st)) { | 
|  | // No traces file at this index, done with the files. | 
|  | break; | 
|  | } | 
|  | dump_file("VM TRACES WHEN SLOW", anr_traces_path); | 
|  | i++; | 
|  | } | 
|  | } | 
|  |  | 
|  | int dumped = 0; | 
|  | for (size_t i = 0; i < NUM_TOMBSTONES; i++) { | 
|  | if (tombstone_data[i].fd != -1) { | 
|  | dumped = 1; | 
|  | dump_file_from_fd("TOMBSTONE", tombstone_data[i].name, tombstone_data[i].fd); | 
|  | tombstone_data[i].fd = -1; | 
|  | } | 
|  | } | 
|  | if (!dumped) { | 
|  | printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR); | 
|  | } | 
|  |  | 
|  | dump_file("NETWORK DEV INFO", "/proc/net/dev"); | 
|  | dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all"); | 
|  | dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt"); | 
|  | dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl"); | 
|  | dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats"); | 
|  |  | 
|  | if (!stat(PSTORE_LAST_KMSG, &st)) { | 
|  | /* Also TODO: Make console-ramoops CAP_SYSLOG protected. */ | 
|  | dump_file("LAST KMSG", PSTORE_LAST_KMSG); | 
|  | } else { | 
|  | /* TODO: Make last_kmsg CAP_SYSLOG protected. b/5555691 */ | 
|  | dump_file("LAST KMSG", "/proc/last_kmsg"); | 
|  | } | 
|  |  | 
|  | dump_file("LAST PANIC CONSOLE", "/data/dontpanic/apanic_console"); | 
|  | dump_file("LAST PANIC THREADS", "/data/dontpanic/apanic_threads"); | 
|  |  | 
|  | /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */ | 
|  | run_command("LAST LOGCAT", 10, "logcat", "-L", "-v", "threadtime", | 
|  | "-b", "all", "-d", "*:v", NULL); | 
|  |  | 
|  | for_each_userid(do_dump_settings, NULL); | 
|  |  | 
|  | /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */ | 
|  |  | 
|  | run_command("NETWORK INTERFACES", 10, "ip", "link", NULL); | 
|  |  | 
|  | run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL); | 
|  | run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL); | 
|  |  | 
|  | run_command("IP RULES", 10, "ip", "rule", "show", NULL); | 
|  | run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL); | 
|  |  | 
|  | dump_route_tables(); | 
|  |  | 
|  | run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL); | 
|  | run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL); | 
|  |  | 
|  | run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL); | 
|  | run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL); | 
|  | run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL); | 
|  | /* no ip6 nat */ | 
|  | run_command("IPTABLE RAW", 10, SU_PATH, "root", "iptables", "-t", "raw", "-L", "-nvx", NULL); | 
|  | run_command("IP6TABLE RAW", 10, SU_PATH, "root", "ip6tables", "-t", "raw", "-L", "-nvx", NULL); | 
|  |  | 
|  | run_command("WIFI NETWORKS", 20, | 
|  | SU_PATH, "root", "wpa_cli", "IFNAME=wlan0", "list_networks", NULL); | 
|  |  | 
|  | #ifdef FWDUMP_bcmdhd | 
|  | run_command("DUMP WIFI INTERNAL COUNTERS", 20, | 
|  | SU_PATH, "root", "wlutil", "counters", NULL); | 
|  | #endif | 
|  | dump_file("INTERRUPTS (1)", "/proc/interrupts"); | 
|  |  | 
|  | property_get("dhcp.wlan0.gateway", network, ""); | 
|  | if (network[0]) | 
|  | run_command("PING GATEWAY", 10, "ping", "-c", "3", "-i", ".5", network, NULL); | 
|  | property_get("dhcp.wlan0.dns1", network, ""); | 
|  | if (network[0]) | 
|  | run_command("PING DNS1", 10, "ping", "-c", "3", "-i", ".5", network, NULL); | 
|  | property_get("dhcp.wlan0.dns2", network, ""); | 
|  | if (network[0]) | 
|  | run_command("PING DNS2", 10, "ping", "-c", "3", "-i", ".5", network, NULL); | 
|  | #ifdef FWDUMP_bcmdhd | 
|  | run_command("DUMP WIFI STATUS", 20, | 
|  | SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL); | 
|  | run_command("DUMP WIFI INTERNAL COUNTERS", 20, | 
|  | SU_PATH, "root", "wlutil", "counters", NULL); | 
|  | #endif | 
|  | dump_file("INTERRUPTS (2)", "/proc/interrupts"); | 
|  |  | 
|  | print_properties(); | 
|  |  | 
|  | run_command("VOLD DUMP", 10, "vdc", "dump", NULL); | 
|  | run_command("SECURE CONTAINERS", 10, "vdc", "asec", "list", NULL); | 
|  |  | 
|  | run_command("FILESYSTEMS & FREE SPACE", 10, "df", NULL); | 
|  |  | 
|  | run_command("LAST RADIO LOG", 10, "parse_radio_log", "/proc/last_radio_log", NULL); | 
|  |  | 
|  | printf("------ BACKLIGHTS ------\n"); | 
|  | printf("LCD brightness="); | 
|  | dump_file(NULL, "/sys/class/leds/lcd-backlight/brightness"); | 
|  | printf("Button brightness="); | 
|  | dump_file(NULL, "/sys/class/leds/button-backlight/brightness"); | 
|  | printf("Keyboard brightness="); | 
|  | dump_file(NULL, "/sys/class/leds/keyboard-backlight/brightness"); | 
|  | printf("ALS mode="); | 
|  | dump_file(NULL, "/sys/class/leds/lcd-backlight/als"); | 
|  | printf("LCD driver registers:\n"); | 
|  | dump_file(NULL, "/sys/class/leds/lcd-backlight/registers"); | 
|  | printf("\n"); | 
|  |  | 
|  | /* Binder state is expensive to look at as it uses a lot of memory. */ | 
|  | dump_file("BINDER FAILED TRANSACTION LOG", "/sys/kernel/debug/binder/failed_transaction_log"); | 
|  | dump_file("BINDER TRANSACTION LOG", "/sys/kernel/debug/binder/transaction_log"); | 
|  | dump_file("BINDER TRANSACTIONS", "/sys/kernel/debug/binder/transactions"); | 
|  | dump_file("BINDER STATS", "/sys/kernel/debug/binder/stats"); | 
|  | dump_file("BINDER STATE", "/sys/kernel/debug/binder/state"); | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== Board\n"); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | dumpstate_board(); | 
|  | printf("\n"); | 
|  |  | 
|  | /* Migrate the ril_dumpstate to a dumpstate_board()? */ | 
|  | char ril_dumpstate_timeout[PROPERTY_VALUE_MAX] = {0}; | 
|  | property_get("ril.dumpstate.timeout", ril_dumpstate_timeout, "30"); | 
|  | if (strnlen(ril_dumpstate_timeout, PROPERTY_VALUE_MAX - 1) > 0) { | 
|  | if (0 == strncmp(build_type, "user", PROPERTY_VALUE_MAX - 1)) { | 
|  | // su does not exist on user builds, so try running without it. | 
|  | // This way any implementations of vril-dump that do not require | 
|  | // root can run on user builds. | 
|  | run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), | 
|  | "vril-dump", NULL); | 
|  | } else { | 
|  | run_command("DUMP VENDOR RIL LOGS", atoi(ril_dumpstate_timeout), | 
|  | SU_PATH, "root", "vril-dump", NULL); | 
|  | } | 
|  | } | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== Android Framework Services\n"); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | /* the full dumpsys is starting to take a long time, so we need | 
|  | to increase its timeout.  we really need to do the timeouts in | 
|  | dumpsys itself... */ | 
|  | run_command("DUMPSYS", 60, "dumpsys", NULL); | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== Checkins\n"); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | run_command("CHECKIN BATTERYSTATS", 30, "dumpsys", "batterystats", "-c", NULL); | 
|  | run_command("CHECKIN MEMINFO", 30, "dumpsys", "meminfo", "--checkin", NULL); | 
|  | run_command("CHECKIN NETSTATS", 30, "dumpsys", "netstats", "--checkin", NULL); | 
|  | run_command("CHECKIN PROCSTATS", 30, "dumpsys", "procstats", "-c", NULL); | 
|  | run_command("CHECKIN USAGESTATS", 30, "dumpsys", "usagestats", "-c", NULL); | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== Running Application Activities\n"); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | run_command("APP ACTIVITIES", 30, "dumpsys", "activity", "all", NULL); | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== Running Application Services\n"); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | run_command("APP SERVICES", 30, "dumpsys", "activity", "service", "all", NULL); | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== Running Application Providers\n"); | 
|  | printf("========================================================\n"); | 
|  |  | 
|  | run_command("APP SERVICES", 30, "dumpsys", "activity", "provider", "all", NULL); | 
|  |  | 
|  |  | 
|  | printf("========================================================\n"); | 
|  | printf("== dumpstate: done\n"); | 
|  | printf("========================================================\n"); | 
|  | } | 
|  |  | 
|  | static void usage() { | 
|  | fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q]\n" | 
|  | "  -o: write to file (instead of stdout)\n" | 
|  | "  -d: append date to filename (requires -o)\n" | 
|  | "  -p: capture screenshot to filename.png (requires -o)\n" | 
|  | "  -s: write output to control socket (for init)\n" | 
|  | "  -b: play sound file instead of vibrate, at beginning of job\n" | 
|  | "  -e: play sound file instead of vibrate, at end of job\n" | 
|  | "  -q: disable vibrate\n" | 
|  | "  -B: send broadcast when finished (requires -o and -p)\n" | 
|  | ); | 
|  | } | 
|  |  | 
|  | static void sigpipe_handler(int n) { | 
|  | // don't complain to stderr or stdout | 
|  | _exit(EXIT_FAILURE); | 
|  | } | 
|  |  | 
|  | static void vibrate(FILE* vibrator, int ms) { | 
|  | fprintf(vibrator, "%d\n", ms); | 
|  | fflush(vibrator); | 
|  | } | 
|  |  | 
|  | int main(int argc, char *argv[]) { | 
|  | struct sigaction sigact; | 
|  | int do_add_date = 0; | 
|  | int do_vibrate = 1; | 
|  | char* use_outfile = 0; | 
|  | int use_socket = 0; | 
|  | int do_fb = 0; | 
|  | int do_broadcast = 0; | 
|  |  | 
|  | if (getuid() != 0) { | 
|  | // Old versions of the adb client would call the | 
|  | // dumpstate command directly. Newer clients | 
|  | // call /system/bin/bugreport instead. If we detect | 
|  | // we're being called incorrectly, then exec the | 
|  | // correct program. | 
|  | return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL); | 
|  | } | 
|  |  | 
|  | ALOGI("begin\n"); | 
|  |  | 
|  | /* clear SIGPIPE handler */ | 
|  | memset(&sigact, 0, sizeof(sigact)); | 
|  | sigact.sa_handler = sigpipe_handler; | 
|  | sigaction(SIGPIPE, &sigact, NULL); | 
|  |  | 
|  | /* set as high priority, and protect from OOM killer */ | 
|  | setpriority(PRIO_PROCESS, 0, -20); | 
|  | FILE *oom_adj = fopen("/proc/self/oom_adj", "w"); | 
|  | if (oom_adj) { | 
|  | fputs("-17", oom_adj); | 
|  | fclose(oom_adj); | 
|  | } | 
|  |  | 
|  | /* parse arguments */ | 
|  | int c; | 
|  | while ((c = getopt(argc, argv, "dho:svqzpB")) != -1) { | 
|  | switch (c) { | 
|  | case 'd': do_add_date = 1;       break; | 
|  | case 'o': use_outfile = optarg;  break; | 
|  | case 's': use_socket = 1;        break; | 
|  | case 'v': break;  // compatibility no-op | 
|  | case 'q': do_vibrate = 0;        break; | 
|  | case 'p': do_fb = 1;             break; | 
|  | case 'B': do_broadcast = 1;      break; | 
|  | case '?': printf("\n"); | 
|  | case 'h': | 
|  | usage(); | 
|  | exit(1); | 
|  | } | 
|  | } | 
|  |  | 
|  | // If we are going to use a socket, do it as early as possible | 
|  | // to avoid timeouts from bugreport. | 
|  | if (use_socket) { | 
|  | redirect_to_socket(stdout, "dumpstate"); | 
|  | } | 
|  |  | 
|  | /* open the vibrator before dropping root */ | 
|  | FILE *vibrator = 0; | 
|  | if (do_vibrate) { | 
|  | vibrator = fopen("/sys/class/timed_output/vibrator/enable", "w"); | 
|  | if (vibrator) { | 
|  | fcntl(fileno(vibrator), F_SETFD, FD_CLOEXEC); | 
|  | vibrate(vibrator, 150); | 
|  | } | 
|  | } | 
|  |  | 
|  | /* read /proc/cmdline before dropping root */ | 
|  | FILE *cmdline = fopen("/proc/cmdline", "r"); | 
|  | if (cmdline != NULL) { | 
|  | fgets(cmdline_buf, sizeof(cmdline_buf), cmdline); | 
|  | fclose(cmdline); | 
|  | } | 
|  |  | 
|  | /* collect stack traces from Dalvik and native processes (needs root) */ | 
|  | dump_traces_path = dump_traces(); | 
|  |  | 
|  | /* Get the tombstone fds here while we are running as root. */ | 
|  | get_tombstone_fds(tombstone_data); | 
|  |  | 
|  | /* ensure we will keep capabilities when we drop root */ | 
|  | if (prctl(PR_SET_KEEPCAPS, 1) < 0) { | 
|  | ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno)); | 
|  | return -1; | 
|  | } | 
|  |  | 
|  | /* switch to non-root user and group */ | 
|  | gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW, | 
|  | AID_MOUNT, AID_INET, AID_NET_BW_STATS }; | 
|  | if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) { | 
|  | ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno)); | 
|  | return -1; | 
|  | } | 
|  | if (setgid(AID_SHELL) != 0) { | 
|  | ALOGE("Unable to setgid, aborting: %s\n", strerror(errno)); | 
|  | return -1; | 
|  | } | 
|  | if (setuid(AID_SHELL) != 0) { | 
|  | ALOGE("Unable to setuid, aborting: %s\n", strerror(errno)); | 
|  | return -1; | 
|  | } | 
|  |  | 
|  | struct __user_cap_header_struct capheader; | 
|  | struct __user_cap_data_struct capdata[2]; | 
|  | memset(&capheader, 0, sizeof(capheader)); | 
|  | memset(&capdata, 0, sizeof(capdata)); | 
|  | capheader.version = _LINUX_CAPABILITY_VERSION_3; | 
|  | capheader.pid = 0; | 
|  |  | 
|  | capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG); | 
|  | capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG); | 
|  | capdata[0].inheritable = 0; | 
|  | capdata[1].inheritable = 0; | 
|  |  | 
|  | if (capset(&capheader, &capdata[0]) < 0) { | 
|  | ALOGE("capset failed: %s\n", strerror(errno)); | 
|  | return -1; | 
|  | } | 
|  |  | 
|  | /* redirect output if needed */ | 
|  | char path[PATH_MAX], tmp_path[PATH_MAX]; | 
|  | pid_t gzip_pid = -1; | 
|  |  | 
|  | if (!use_socket && use_outfile) { | 
|  | strlcpy(path, use_outfile, sizeof(path)); | 
|  | if (do_add_date) { | 
|  | char date[80]; | 
|  | time_t now = time(NULL); | 
|  | strftime(date, sizeof(date), "-%Y-%m-%d-%H-%M-%S", localtime(&now)); | 
|  | strlcat(path, date, sizeof(path)); | 
|  | } | 
|  | if (do_fb) { | 
|  | strlcpy(screenshot_path, path, sizeof(screenshot_path)); | 
|  | strlcat(screenshot_path, ".png", sizeof(screenshot_path)); | 
|  | } | 
|  | strlcat(path, ".txt", sizeof(path)); | 
|  | strlcpy(tmp_path, path, sizeof(tmp_path)); | 
|  | strlcat(tmp_path, ".tmp", sizeof(tmp_path)); | 
|  | redirect_to_file(stdout, tmp_path); | 
|  | } | 
|  |  | 
|  | dumpstate(); | 
|  |  | 
|  | /* done */ | 
|  | if (vibrator) { | 
|  | for (int i = 0; i < 3; i++) { | 
|  | vibrate(vibrator, 75); | 
|  | usleep((75 + 50) * 1000); | 
|  | } | 
|  | fclose(vibrator); | 
|  | } | 
|  |  | 
|  | /* wait for gzip to finish, otherwise it might get killed when we exit */ | 
|  | if (gzip_pid > 0) { | 
|  | fclose(stdout); | 
|  | waitpid(gzip_pid, NULL, 0); | 
|  | } | 
|  |  | 
|  | /* rename the (now complete) .tmp file to its final location */ | 
|  | if (use_outfile && rename(tmp_path, path)) { | 
|  | fprintf(stderr, "rename(%s, %s): %s\n", tmp_path, path, strerror(errno)); | 
|  | } | 
|  |  | 
|  | /* tell activity manager we're done */ | 
|  | if (do_broadcast && use_outfile && do_fb) { | 
|  | run_command(NULL, 5, "/system/bin/am", "broadcast", "--user", "0", | 
|  | "-a", "android.intent.action.BUGREPORT_FINISHED", | 
|  | "--es", "android.intent.extra.BUGREPORT", path, | 
|  | "--es", "android.intent.extra.SCREENSHOT", screenshot_path, | 
|  | "--receiver-permission", "android.permission.DUMP", NULL); | 
|  | } | 
|  |  | 
|  | ALOGI("done\n"); | 
|  |  | 
|  | return 0; | 
|  | } |