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-rw-r--r--cmds/dumpstate/dumpstate.cpp783
1 files changed, 783 insertions, 0 deletions
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
new file mode 100644
index 0000000000..75604164af
--- /dev/null
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -0,0 +1,783 @@
+/*
+ * 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 <stdbool.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 RAFT_DIR "/data/misc/raft/"
+#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 = TEMP_FAILURE_RETRY(open(data[i].name,
+ O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK));
+ 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);
+}
+
+static bool skip_not_stat(const char *path) {
+ static const char stat[] = "/stat";
+ size_t len = strlen(path);
+ if (path[len - 1] == '/') { /* Directory? */
+ return false;
+ }
+ return strcmp(path + len - sizeof(stat) + 1, stat); /* .../stat? */
+}
+
+static const char mmcblk0[] = "/sys/block/mmcblk0/";
+unsigned long worst_write_perf = 20000; /* in KB/s */
+
+static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) {
+ unsigned long fields[11], read_perf, write_perf;
+ bool z;
+ char *cp, *buffer = NULL;
+ size_t i = 0;
+ FILE *fp = fdopen(fd, "rb");
+ getline(&buffer, &i, fp);
+ fclose(fp);
+ if (!buffer) {
+ return -errno;
+ }
+ i = strlen(buffer);
+ while ((i > 0) && (buffer[i - 1] == '\n')) {
+ buffer[--i] = '\0';
+ }
+ if (!*buffer) {
+ free(buffer);
+ return 0;
+ }
+ z = true;
+ for (cp = buffer, i = 0; i < (sizeof(fields) / sizeof(fields[0])); ++i) {
+ fields[i] = strtol(cp, &cp, 0);
+ if (fields[i] != 0) {
+ z = false;
+ }
+ }
+ if (z) { /* never accessed */
+ free(buffer);
+ return 0;
+ }
+
+ if (!strncmp(path, mmcblk0, sizeof(mmcblk0) - 1)) {
+ path += sizeof(mmcblk0) - 1;
+ }
+
+ printf("%s: %s\n", path, buffer);
+ free(buffer);
+
+ read_perf = 0;
+ if (fields[3]) {
+ read_perf = 512 * fields[2] / fields[3];
+ }
+ write_perf = 0;
+ if (fields[7]) {
+ write_perf = 512 * fields[6] / fields[7];
+ }
+ printf("%s: read: %luKB/s write: %luKB/s\n", path, read_perf, write_perf);
+ if ((write_perf > 1) && (write_perf < worst_write_perf)) {
+ worst_write_perf = write_perf;
+ }
+ return 0;
+}
+
+/* Copied policy from system/core/logd/LogBuffer.cpp */
+
+#define LOG_BUFFER_SIZE (256 * 1024)
+#define LOG_BUFFER_MIN_SIZE (64 * 1024UL)
+#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL)
+
+static bool valid_size(unsigned long value) {
+ if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) {
+ return false;
+ }
+
+ long pages = sysconf(_SC_PHYS_PAGES);
+ if (pages < 1) {
+ return true;
+ }
+
+ long pagesize = sysconf(_SC_PAGESIZE);
+ if (pagesize <= 1) {
+ pagesize = PAGE_SIZE;
+ }
+
+ // maximum memory impact a somewhat arbitrary ~3%
+ pages = (pages + 31) / 32;
+ unsigned long maximum = pages * pagesize;
+
+ if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) {
+ return true;
+ }
+
+ return value <= maximum;
+}
+
+static unsigned long property_get_size(const char *key) {
+ unsigned long value;
+ char *cp, property[PROPERTY_VALUE_MAX];
+
+ property_get(key, property, "");
+ value = strtoul(property, &cp, 10);
+
+ switch(*cp) {
+ case 'm':
+ case 'M':
+ value *= 1024;
+ /* FALLTHRU */
+ case 'k':
+ case 'K':
+ value *= 1024;
+ /* FALLTHRU */
+ case '\0':
+ break;
+
+ default:
+ value = 0;
+ }
+
+ if (!valid_size(value)) {
+ value = 0;
+ }
+
+ return value;
+}
+
+/* timeout in ms */
+static unsigned long logcat_timeout(const char *name) {
+ static const char global_tuneable[] = "persist.logd.size"; // Settings App
+ static const char global_default[] = "ro.logd.size"; // BoardConfig.mk
+ char key[PROP_NAME_MAX];
+ unsigned long property_size, default_size;
+
+ default_size = property_get_size(global_tuneable);
+ if (!default_size) {
+ default_size = property_get_size(global_default);
+ }
+
+ snprintf(key, sizeof(key), "%s.%s", global_tuneable, name);
+ property_size = property_get_size(key);
+
+ if (!property_size) {
+ snprintf(key, sizeof(key), "%s.%s", global_default, name);
+ property_size = property_get_size(key);
+ }
+
+ if (!property_size) {
+ property_size = default_size;
+ }
+
+ if (!property_size) {
+ property_size = LOG_BUFFER_SIZE;
+ }
+
+ /* Engineering margin is ten-fold our guess */
+ return 10 * (property_size + worst_write_perf) / worst_write_perf;
+}
+
+/* End copy from system/core/logd/LogBuffer.cpp */
+
+/* dumps the current system state to stdout */
+static void dumpstate() {
+ unsigned long timeout;
+ 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_files("UPTIME MMC PERF", mmcblk0, skip_not_stat, dump_stat_from_fd);
+ dump_file("MEMORY INFO", "/proc/meminfo");
+ run_command("CPU INFO", 10, "top", "-n", "1", "-d", "1", "-m", "30", "-t", NULL);
+ run_command("PROCRANK", 20, SU_PATH, "root", "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");
+
+ run_command("PROCESSES AND THREADS", 10, "ps", "-Z", "-t", "-p", "-P", 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");
+ // calculate timeout
+ timeout = logcat_timeout("main") + logcat_timeout("system") + logcat_timeout("crash");
+ if (timeout < 20000) {
+ timeout = 20000;
+ }
+ run_command("SYSTEM LOG", timeout / 1000, "logcat", "-v", "threadtime",
+ "-v", "printable",
+ "-d",
+ "*:v", NULL);
+ timeout = logcat_timeout("events");
+ if (timeout < 20000) {
+ timeout = 20000;
+ }
+ run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events",
+ "-v", "threadtime",
+ "-v", "printable",
+ "-d",
+ "*:v", NULL);
+ timeout = logcat_timeout("radio");
+ if (timeout < 20000) {
+ timeout = 20000;
+ }
+ run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio",
+ "-v", "threadtime",
+ "-v", "printable",
+ "-d",
+ "*:v", NULL);
+
+ run_command("LOG STATISTICS", 10, "logcat", "-b", "all", "-S", NULL);
+
+ run_command("RAFT LOGS", 300, SU_PATH, "root", "logcompressor", "-r", RAFT_DIR, 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 = TEMP_FAILURE_RETRY(open(anr_traces_path,
+ O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_NONBLOCK));
+ 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");
+ }
+
+ /* kernels must set CONFIG_PSTORE_PMSG, slice up pstore with device tree */
+ run_command("LAST LOGCAT", 10, "logcat", "-L",
+ "-b", "all",
+ "-v", "threadtime",
+ "-v", "printable",
+ "-d",
+ "*:v", 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("ND OFFLOAD TABLE", 5,
+ SU_PATH, "root", "wlutil", "nd_hostip", NULL);
+
+ run_command("DUMP WIFI INTERNAL COUNTERS (1)", 20,
+ SU_PATH, "root", "wlutil", "counters", NULL);
+
+ run_command("ND OFFLOAD STATUS (1)", 5,
+ SU_PATH, "root", "wlutil", "nd_status", NULL);
+
+#endif
+ dump_file("INTERRUPTS (1)", "/proc/interrupts");
+
+ run_command("NETWORK DIAGNOSTICS", 10, "dumpsys", "connectivity", "--diag", NULL);
+
+#ifdef FWDUMP_bcmdhd
+ run_command("DUMP WIFI STATUS", 20,
+ SU_PATH, "root", "dhdutil", "-i", "wlan0", "dump", NULL);
+
+ run_command("DUMP WIFI INTERNAL COUNTERS (2)", 20,
+ SU_PATH, "root", "wlutil", "counters", NULL);
+
+ run_command("ND OFFLOAD STATUS (2)", 5,
+ SU_PATH, "root", "wlutil", "nd_status", 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);
+ run_command("CHECKIN PACKAGE", 30, "dumpsys", "package", "--checkin", 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", "we");
+ 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", "we");
+ if (vibrator) {
+ vibrate(vibrator, 150);
+ }
+ }
+
+ /* read /proc/cmdline before dropping root */
+ FILE *cmdline = fopen("/proc/cmdline", "re");
+ 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, AID_READPROC };
+ 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;
+}
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-20 21:56:18 +0000