| /* |
| * 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. |
| */ |
| |
| #define LOG_TAG "dumpstate" |
| |
| #include "dumpstate.h" |
| |
| #include <dirent.h> |
| #include <fcntl.h> |
| #include <libgen.h> |
| #include <math.h> |
| #include <poll.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/capability.h> |
| #include <sys/inotify.h> |
| #include <sys/klog.h> |
| #include <sys/prctl.h> |
| #include <sys/stat.h> |
| #include <sys/time.h> |
| #include <sys/wait.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| #include <memory> |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include <android-base/file.h> |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <android-base/unique_fd.h> |
| #include <android/hidl/manager/1.0/IServiceManager.h> |
| #include <cutils/properties.h> |
| #include <cutils/sockets.h> |
| #include <debuggerd/client.h> |
| #include <log/log.h> |
| #include <private/android_filesystem_config.h> |
| |
| #include "DumpstateInternal.h" |
| |
| // TODO: remove once moved to namespace |
| using android::os::dumpstate::CommandOptions; |
| using android::os::dumpstate::DumpFileToFd; |
| using android::os::dumpstate::PropertiesHelper; |
| |
| // Keep in sync with |
| // frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java |
| static const int TRACE_DUMP_TIMEOUT_MS = 10000; // 10 seconds |
| |
| /* Most simple commands have 10 as timeout, so 5 is a good estimate */ |
| static const int32_t WEIGHT_FILE = 5; |
| |
| // TODO: temporary variables and functions used during C++ refactoring |
| static Dumpstate& ds = Dumpstate::GetInstance(); |
| static int RunCommand(const std::string& title, const std::vector<std::string>& full_command, |
| const CommandOptions& options = CommandOptions::DEFAULT) { |
| return ds.RunCommand(title, full_command, options); |
| } |
| |
| /* list of native processes to include in the native dumps */ |
| // This matches the /proc/pid/exe link instead of /proc/pid/cmdline. |
| static const char* native_processes_to_dump[] = { |
| "/system/bin/audioserver", |
| "/system/bin/cameraserver", |
| "/system/bin/drmserver", |
| "/system/bin/mediadrmserver", |
| "/system/bin/mediaextractor", // media.extractor |
| "/system/bin/mediametrics", // media.metrics |
| "/system/bin/mediaserver", |
| "/system/bin/sdcard", |
| "/system/bin/statsd", |
| "/system/bin/surfaceflinger", |
| "/system/bin/vehicle_network_service", |
| "/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec |
| NULL, |
| }; |
| |
| /* list of hal interface to dump containing process during native dumps */ |
| static const char* hal_interfaces_to_dump[] { |
| "android.hardware.audio@2.0::IDevicesFactory", |
| "android.hardware.bluetooth@1.0::IBluetoothHci", |
| "android.hardware.camera.provider@2.4::ICameraProvider", |
| "android.hardware.graphics.composer@2.1::IComposer", |
| "android.hardware.media.omx@1.0::IOmx", |
| "android.hardware.sensors@1.0::ISensors", |
| "android.hardware.vr@1.0::IVr", |
| NULL, |
| }; |
| |
| // Reasonable value for max stats. |
| static const int STATS_MAX_N_RUNS = 1000; |
| static const long STATS_MAX_AVERAGE = 100000; |
| |
| CommandOptions Dumpstate::DEFAULT_DUMPSYS = CommandOptions::WithTimeout(30).Build(); |
| |
| Dumpstate::Dumpstate(const std::string& version) |
| : pid_(getpid()), version_(version), now_(time(nullptr)) { |
| } |
| |
| Dumpstate& Dumpstate::GetInstance() { |
| static Dumpstate singleton_(android::base::GetProperty("dumpstate.version", VERSION_CURRENT)); |
| return singleton_; |
| } |
| |
| DurationReporter::DurationReporter(const std::string& title, bool log_only) |
| : title_(title), log_only_(log_only) { |
| if (!title_.empty()) { |
| started_ = Nanotime(); |
| } |
| } |
| |
| DurationReporter::~DurationReporter() { |
| if (!title_.empty()) { |
| uint64_t elapsed = Nanotime() - started_; |
| if (log_only_) { |
| MYLOGD("Duration of '%s': %.3fs\n", title_.c_str(), (float)elapsed / NANOS_PER_SEC); |
| } else { |
| // Use "Yoda grammar" to make it easier to grep|sort sections. |
| printf("------ %.3fs was the duration of '%s' ------\n", (float)elapsed / NANOS_PER_SEC, |
| title_.c_str()); |
| } |
| } |
| } |
| |
| const int32_t Progress::kDefaultMax = 5000; |
| |
| Progress::Progress(const std::string& path) : Progress(Progress::kDefaultMax, 1.1, path) { |
| } |
| |
| Progress::Progress(int32_t initial_max, int32_t progress, float growth_factor) |
| : Progress(initial_max, growth_factor, "") { |
| progress_ = progress; |
| } |
| |
| Progress::Progress(int32_t initial_max, float growth_factor, const std::string& path) |
| : initial_max_(initial_max), |
| progress_(0), |
| max_(initial_max), |
| growth_factor_(growth_factor), |
| n_runs_(0), |
| average_max_(0), |
| path_(path) { |
| if (!path_.empty()) { |
| Load(); |
| } |
| } |
| |
| void Progress::Load() { |
| MYLOGD("Loading stats from %s\n", path_.c_str()); |
| std::string content; |
| if (!android::base::ReadFileToString(path_, &content)) { |
| MYLOGI("Could not read stats from %s; using max of %d\n", path_.c_str(), max_); |
| return; |
| } |
| if (content.empty()) { |
| MYLOGE("No stats (empty file) on %s; using max of %d\n", path_.c_str(), max_); |
| return; |
| } |
| std::vector<std::string> lines = android::base::Split(content, "\n"); |
| |
| if (lines.size() < 1) { |
| MYLOGE("Invalid stats on file %s: not enough lines (%d). Using max of %d\n", path_.c_str(), |
| (int)lines.size(), max_); |
| return; |
| } |
| char* ptr; |
| n_runs_ = strtol(lines[0].c_str(), &ptr, 10); |
| average_max_ = strtol(ptr, nullptr, 10); |
| if (n_runs_ <= 0 || average_max_ <= 0 || n_runs_ > STATS_MAX_N_RUNS || |
| average_max_ > STATS_MAX_AVERAGE) { |
| MYLOGE("Invalid stats line on file %s: %s\n", path_.c_str(), lines[0].c_str()); |
| initial_max_ = Progress::kDefaultMax; |
| } else { |
| initial_max_ = average_max_; |
| } |
| max_ = initial_max_; |
| |
| MYLOGI("Average max progress: %d in %d runs; estimated max: %d\n", average_max_, n_runs_, max_); |
| } |
| |
| void Progress::Save() { |
| int32_t total = n_runs_ * average_max_ + progress_; |
| int32_t runs = n_runs_ + 1; |
| int32_t average = floor(((float)total) / runs); |
| MYLOGI("Saving stats (total=%d, runs=%d, average=%d) on %s\n", total, runs, average, |
| path_.c_str()); |
| if (path_.empty()) { |
| return; |
| } |
| |
| std::string content = android::base::StringPrintf("%d %d\n", runs, average); |
| if (!android::base::WriteStringToFile(content, path_)) { |
| MYLOGE("Could not save stats on %s\n", path_.c_str()); |
| } |
| } |
| |
| int32_t Progress::Get() const { |
| return progress_; |
| } |
| |
| bool Progress::Inc(int32_t delta) { |
| bool changed = false; |
| if (delta >= 0) { |
| progress_ += delta; |
| if (progress_ > max_) { |
| int32_t old_max = max_; |
| max_ = floor((float)progress_ * growth_factor_); |
| MYLOGD("Adjusting max progress from %d to %d\n", old_max, max_); |
| changed = true; |
| } |
| } |
| return changed; |
| } |
| |
| int32_t Progress::GetMax() const { |
| return max_; |
| } |
| |
| int32_t Progress::GetInitialMax() const { |
| return initial_max_; |
| } |
| |
| void Progress::Dump(int fd, const std::string& prefix) const { |
| const char* pr = prefix.c_str(); |
| dprintf(fd, "%sprogress: %d\n", pr, progress_); |
| dprintf(fd, "%smax: %d\n", pr, max_); |
| dprintf(fd, "%sinitial_max: %d\n", pr, initial_max_); |
| dprintf(fd, "%sgrowth_factor: %0.2f\n", pr, growth_factor_); |
| dprintf(fd, "%spath: %s\n", pr, path_.c_str()); |
| dprintf(fd, "%sn_runs: %d\n", pr, n_runs_); |
| dprintf(fd, "%saverage_max: %d\n", pr, average_max_); |
| } |
| |
| bool Dumpstate::IsZipping() const { |
| return zip_writer_ != nullptr; |
| } |
| |
| std::string Dumpstate::GetPath(const std::string& suffix) const { |
| return android::base::StringPrintf("%s/%s-%s%s", bugreport_dir_.c_str(), base_name_.c_str(), |
| name_.c_str(), suffix.c_str()); |
| } |
| |
| void Dumpstate::SetProgress(std::unique_ptr<Progress> progress) { |
| progress_ = std::move(progress); |
| } |
| |
| void for_each_userid(void (*func)(int), const char *header) { |
| std::string title = header == nullptr ? "for_each_userid" : android::base::StringPrintf( |
| "for_each_userid(%s)", header); |
| DurationReporter duration_reporter(title); |
| if (PropertiesHelper::IsDryRun()) return; |
| |
| DIR *d; |
| struct dirent *de; |
| |
| if (header) printf("\n------ %s ------\n", header); |
| func(0); |
| |
| if (!(d = opendir("/data/system/users"))) { |
| printf("Failed to open /data/system/users (%s)\n", strerror(errno)); |
| return; |
| } |
| |
| while ((de = readdir(d))) { |
| int userid; |
| if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { |
| continue; |
| } |
| func(userid); |
| } |
| |
| closedir(d); |
| } |
| |
| static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { |
| DIR *d; |
| struct dirent *de; |
| |
| if (!(d = opendir("/proc"))) { |
| printf("Failed to open /proc (%s)\n", strerror(errno)); |
| return; |
| } |
| |
| if (header) printf("\n------ %s ------\n", header); |
| while ((de = readdir(d))) { |
| int pid; |
| int fd; |
| char cmdpath[255]; |
| char cmdline[255]; |
| |
| if (!(pid = atoi(de->d_name))) { |
| continue; |
| } |
| |
| memset(cmdline, 0, sizeof(cmdline)); |
| |
| snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/cmdline", pid); |
| if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { |
| TEMP_FAILURE_RETRY(read(fd, cmdline, sizeof(cmdline) - 2)); |
| close(fd); |
| if (cmdline[0]) { |
| helper(pid, cmdline, arg); |
| continue; |
| } |
| } |
| |
| // if no cmdline, a kernel thread has comm |
| snprintf(cmdpath, sizeof(cmdpath), "/proc/%d/comm", pid); |
| if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) >= 0) { |
| TEMP_FAILURE_RETRY(read(fd, cmdline + 1, sizeof(cmdline) - 4)); |
| close(fd); |
| if (cmdline[1]) { |
| cmdline[0] = '['; |
| size_t len = strcspn(cmdline, "\f\b\r\n"); |
| cmdline[len] = ']'; |
| cmdline[len+1] = '\0'; |
| } |
| } |
| if (!cmdline[0]) { |
| strcpy(cmdline, "N/A"); |
| } |
| helper(pid, cmdline, arg); |
| } |
| |
| closedir(d); |
| } |
| |
| static void for_each_pid_helper(int pid, const char *cmdline, void *arg) { |
| for_each_pid_func *func = (for_each_pid_func*) arg; |
| func(pid, cmdline); |
| } |
| |
| void for_each_pid(for_each_pid_func func, const char *header) { |
| std::string title = header == nullptr ? "for_each_pid" |
| : android::base::StringPrintf("for_each_pid(%s)", header); |
| DurationReporter duration_reporter(title); |
| if (PropertiesHelper::IsDryRun()) return; |
| |
| __for_each_pid(for_each_pid_helper, header, (void *) func); |
| } |
| |
| static void for_each_tid_helper(int pid, const char *cmdline, void *arg) { |
| DIR *d; |
| struct dirent *de; |
| char taskpath[255]; |
| for_each_tid_func *func = (for_each_tid_func *) arg; |
| |
| snprintf(taskpath, sizeof(taskpath), "/proc/%d/task", pid); |
| |
| if (!(d = opendir(taskpath))) { |
| printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); |
| return; |
| } |
| |
| func(pid, pid, cmdline); |
| |
| while ((de = readdir(d))) { |
| int tid; |
| int fd; |
| char commpath[255]; |
| char comm[255]; |
| |
| if (!(tid = atoi(de->d_name))) { |
| continue; |
| } |
| |
| if (tid == pid) |
| continue; |
| |
| snprintf(commpath, sizeof(commpath), "/proc/%d/comm", tid); |
| memset(comm, 0, sizeof(comm)); |
| if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { |
| strcpy(comm, "N/A"); |
| } else { |
| char *c; |
| TEMP_FAILURE_RETRY(read(fd, comm, sizeof(comm) - 2)); |
| close(fd); |
| |
| c = strrchr(comm, '\n'); |
| if (c) { |
| *c = '\0'; |
| } |
| } |
| func(pid, tid, comm); |
| } |
| |
| closedir(d); |
| } |
| |
| void for_each_tid(for_each_tid_func func, const char *header) { |
| std::string title = header == nullptr ? "for_each_tid" |
| : android::base::StringPrintf("for_each_tid(%s)", header); |
| DurationReporter duration_reporter(title); |
| |
| if (PropertiesHelper::IsDryRun()) return; |
| |
| __for_each_pid(for_each_tid_helper, header, (void *) func); |
| } |
| |
| void show_wchan(int pid, int tid, const char *name) { |
| if (PropertiesHelper::IsDryRun()) return; |
| |
| char path[255]; |
| char buffer[255]; |
| int fd, ret, save_errno; |
| char name_buffer[255]; |
| |
| memset(buffer, 0, sizeof(buffer)); |
| |
| snprintf(path, sizeof(path), "/proc/%d/wchan", tid); |
| if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { |
| printf("Failed to open '%s' (%s)\n", path, strerror(errno)); |
| return; |
| } |
| |
| ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); |
| save_errno = errno; |
| close(fd); |
| |
| if (ret < 0) { |
| printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); |
| return; |
| } |
| |
| snprintf(name_buffer, sizeof(name_buffer), "%*s%s", |
| pid == tid ? 0 : 3, "", name); |
| |
| printf("%-7d %-32s %s\n", tid, name_buffer, buffer); |
| |
| return; |
| } |
| |
| // print time in centiseconds |
| static void snprcent(char *buffer, size_t len, size_t spc, |
| unsigned long long time) { |
| static long hz; // cache discovered hz |
| |
| if (hz <= 0) { |
| hz = sysconf(_SC_CLK_TCK); |
| if (hz <= 0) { |
| hz = 1000; |
| } |
| } |
| |
| // convert to centiseconds |
| time = (time * 100 + (hz / 2)) / hz; |
| |
| char str[16]; |
| |
| snprintf(str, sizeof(str), " %llu.%02u", |
| time / 100, (unsigned)(time % 100)); |
| size_t offset = strlen(buffer); |
| snprintf(buffer + offset, (len > offset) ? len - offset : 0, |
| "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); |
| } |
| |
| // print permille as a percent |
| static void snprdec(char *buffer, size_t len, size_t spc, unsigned permille) { |
| char str[16]; |
| |
| snprintf(str, sizeof(str), " %u.%u%%", permille / 10, permille % 10); |
| size_t offset = strlen(buffer); |
| snprintf(buffer + offset, (len > offset) ? len - offset : 0, |
| "%*s", (spc > offset) ? (int)(spc - offset) : 0, str); |
| } |
| |
| void show_showtime(int pid, const char *name) { |
| if (PropertiesHelper::IsDryRun()) return; |
| |
| char path[255]; |
| char buffer[1023]; |
| int fd, ret, save_errno; |
| |
| memset(buffer, 0, sizeof(buffer)); |
| |
| snprintf(path, sizeof(path), "/proc/%d/stat", pid); |
| if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { |
| printf("Failed to open '%s' (%s)\n", path, strerror(errno)); |
| return; |
| } |
| |
| ret = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); |
| save_errno = errno; |
| close(fd); |
| |
| if (ret < 0) { |
| printf("Failed to read '%s' (%s)\n", path, strerror(save_errno)); |
| return; |
| } |
| |
| // field 14 is utime |
| // field 15 is stime |
| // field 42 is iotime |
| unsigned long long utime = 0, stime = 0, iotime = 0; |
| if (sscanf(buffer, |
| "%*u %*s %*s %*d %*d %*d %*d %*d %*d %*d %*d " |
| "%*d %*d %llu %llu %*d %*d %*d %*d %*d %*d " |
| "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " |
| "%*d %*d %*d %*d %*d %*d %*d %*d %*d %llu ", |
| &utime, &stime, &iotime) != 3) { |
| return; |
| } |
| |
| unsigned long long total = utime + stime; |
| if (!total) { |
| return; |
| } |
| |
| unsigned permille = (iotime * 1000 + (total / 2)) / total; |
| if (permille > 1000) { |
| permille = 1000; |
| } |
| |
| // try to beautify and stabilize columns at <80 characters |
| snprintf(buffer, sizeof(buffer), "%-6d%s", pid, name); |
| if ((name[0] != '[') || utime) { |
| snprcent(buffer, sizeof(buffer), 57, utime); |
| } |
| snprcent(buffer, sizeof(buffer), 65, stime); |
| if ((name[0] != '[') || iotime) { |
| snprcent(buffer, sizeof(buffer), 73, iotime); |
| } |
| if (iotime) { |
| snprdec(buffer, sizeof(buffer), 79, permille); |
| } |
| puts(buffer); // adds a trailing newline |
| |
| return; |
| } |
| |
| void do_dmesg() { |
| const char *title = "KERNEL LOG (dmesg)"; |
| DurationReporter duration_reporter(title); |
| printf("------ %s ------\n", title); |
| |
| if (PropertiesHelper::IsDryRun()) return; |
| |
| /* Get size of kernel buffer */ |
| int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); |
| if (size <= 0) { |
| printf("Unexpected klogctl return value: %d\n\n", size); |
| return; |
| } |
| char *buf = (char *) malloc(size + 1); |
| if (buf == NULL) { |
| printf("memory allocation failed\n\n"); |
| return; |
| } |
| int retval = klogctl(KLOG_READ_ALL, buf, size); |
| if (retval < 0) { |
| printf("klogctl failure\n\n"); |
| free(buf); |
| return; |
| } |
| buf[retval] = '\0'; |
| printf("%s\n\n", buf); |
| free(buf); |
| return; |
| } |
| |
| void do_showmap(int pid, const char *name) { |
| char title[255]; |
| char arg[255]; |
| |
| snprintf(title, sizeof(title), "SHOW MAP %d (%s)", pid, name); |
| snprintf(arg, sizeof(arg), "%d", pid); |
| RunCommand(title, {"showmap", "-q", arg}, CommandOptions::AS_ROOT); |
| } |
| |
| int Dumpstate::DumpFile(const std::string& title, const std::string& path) { |
| DurationReporter duration_reporter(title); |
| |
| int status = DumpFileToFd(STDOUT_FILENO, title, path); |
| |
| UpdateProgress(WEIGHT_FILE); |
| |
| return status; |
| } |
| |
| int read_file_as_long(const char *path, long int *output) { |
| int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); |
| if (fd < 0) { |
| int err = errno; |
| MYLOGE("Error opening file descriptor for %s: %s\n", path, strerror(err)); |
| return -1; |
| } |
| char buffer[50]; |
| ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); |
| if (bytes_read == -1) { |
| MYLOGE("Error reading file %s: %s\n", path, strerror(errno)); |
| return -2; |
| } |
| if (bytes_read == 0) { |
| MYLOGE("File %s is empty\n", path); |
| return -3; |
| } |
| *output = atoi(buffer); |
| return 0; |
| } |
| |
| /* calls skip to gate calling dump_from_fd recursively |
| * in the specified directory. dump_from_fd defaults to |
| * dump_file_from_fd above when set to NULL. skip defaults |
| * to false when set to NULL. dump_from_fd will always be |
| * called with title NULL. |
| */ |
| int dump_files(const std::string& title, const char* dir, bool (*skip)(const char* path), |
| int (*dump_from_fd)(const char* title, const char* path, int fd)) { |
| DurationReporter duration_reporter(title); |
| DIR *dirp; |
| struct dirent *d; |
| char *newpath = NULL; |
| const char *slash = "/"; |
| int retval = 0; |
| |
| if (!title.empty()) { |
| printf("------ %s (%s) ------\n", title.c_str(), dir); |
| } |
| if (PropertiesHelper::IsDryRun()) return 0; |
| |
| if (dir[strlen(dir) - 1] == '/') { |
| ++slash; |
| } |
| dirp = opendir(dir); |
| if (dirp == NULL) { |
| retval = -errno; |
| MYLOGE("%s: %s\n", dir, strerror(errno)); |
| return retval; |
| } |
| |
| if (!dump_from_fd) { |
| dump_from_fd = dump_file_from_fd; |
| } |
| for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { |
| if ((d->d_name[0] == '.') |
| && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) |
| || (d->d_name[1] == '\0'))) { |
| continue; |
| } |
| asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, |
| (d->d_type == DT_DIR) ? "/" : ""); |
| if (!newpath) { |
| retval = -errno; |
| continue; |
| } |
| if (skip && (*skip)(newpath)) { |
| continue; |
| } |
| if (d->d_type == DT_DIR) { |
| int ret = dump_files("", newpath, skip, dump_from_fd); |
| if (ret < 0) { |
| retval = ret; |
| } |
| continue; |
| } |
| android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC))); |
| if (fd.get() < 0) { |
| retval = -1; |
| printf("*** %s: %s\n", newpath, strerror(errno)); |
| continue; |
| } |
| (*dump_from_fd)(NULL, newpath, fd.get()); |
| } |
| closedir(dirp); |
| if (!title.empty()) { |
| printf("\n"); |
| } |
| return retval; |
| } |
| |
| /* fd must have been opened with the flag O_NONBLOCK. With this flag set, |
| * it's possible to avoid issues where opening the file itself can get |
| * stuck. |
| */ |
| int dump_file_from_fd(const char *title, const char *path, int fd) { |
| if (PropertiesHelper::IsDryRun()) return 0; |
| |
| int flags = fcntl(fd, F_GETFL); |
| if (flags == -1) { |
| printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); |
| return -1; |
| } else if (!(flags & O_NONBLOCK)) { |
| printf("*** %s: fd must have O_NONBLOCK set.\n", path); |
| return -1; |
| } |
| return DumpFileFromFdToFd(title, path, fd, STDOUT_FILENO, PropertiesHelper::IsDryRun()); |
| } |
| |
| int Dumpstate::RunCommand(const std::string& title, const std::vector<std::string>& full_command, |
| const CommandOptions& options) { |
| DurationReporter duration_reporter(title); |
| |
| int status = RunCommandToFd(STDOUT_FILENO, title, full_command, options); |
| |
| /* TODO: for now we're simplifying the progress calculation by using the |
| * timeout as the weight. It's a good approximation for most cases, except when calling dumpsys, |
| * where its weight should be much higher proportionally to its timeout. |
| * Ideally, it should use a options.EstimatedDuration() instead...*/ |
| UpdateProgress(options.Timeout()); |
| |
| return status; |
| } |
| |
| void Dumpstate::RunDumpsys(const std::string& title, const std::vector<std::string>& dumpsys_args, |
| const CommandOptions& options, long dumpsysTimeout) { |
| long timeout = dumpsysTimeout > 0 ? dumpsysTimeout : options.Timeout(); |
| std::vector<std::string> dumpsys = {"/system/bin/dumpsys", "-t", std::to_string(timeout)}; |
| dumpsys.insert(dumpsys.end(), dumpsys_args.begin(), dumpsys_args.end()); |
| RunCommand(title, dumpsys, options); |
| } |
| |
| int open_socket(const char *service) { |
| int s = android_get_control_socket(service); |
| if (s < 0) { |
| MYLOGE("android_get_control_socket(%s): %s\n", service, strerror(errno)); |
| exit(1); |
| } |
| fcntl(s, F_SETFD, FD_CLOEXEC); |
| if (listen(s, 4) < 0) { |
| MYLOGE("listen(control socket): %s\n", strerror(errno)); |
| exit(1); |
| } |
| |
| struct sockaddr addr; |
| socklen_t alen = sizeof(addr); |
| int fd = accept(s, &addr, &alen); |
| if (fd < 0) { |
| MYLOGE("accept(control socket): %s\n", strerror(errno)); |
| exit(1); |
| } |
| |
| return fd; |
| } |
| |
| /* redirect output to a service control socket */ |
| void redirect_to_socket(FILE *redirect, const char *service) { |
| int fd = open_socket(service); |
| fflush(redirect); |
| dup2(fd, fileno(redirect)); |
| close(fd); |
| } |
| |
| // TODO: should call is_valid_output_file and/or be merged into it. |
| void create_parent_dirs(const char *path) { |
| char *chp = const_cast<char *> (path); |
| |
| /* skip initial slash */ |
| if (chp[0] == '/') |
| chp++; |
| |
| /* create leading directories, if necessary */ |
| struct stat dir_stat; |
| while (chp && chp[0]) { |
| chp = strchr(chp, '/'); |
| if (chp) { |
| *chp = 0; |
| if (stat(path, &dir_stat) == -1 || !S_ISDIR(dir_stat.st_mode)) { |
| MYLOGI("Creating directory %s\n", path); |
| if (mkdir(path, 0770)) { /* drwxrwx--- */ |
| MYLOGE("Unable to create directory %s: %s\n", path, strerror(errno)); |
| } else if (chown(path, AID_SHELL, AID_SHELL)) { |
| MYLOGE("Unable to change ownership of dir %s: %s\n", path, strerror(errno)); |
| } |
| } |
| *chp++ = '/'; |
| } |
| } |
| } |
| |
| void _redirect_to_file(FILE *redirect, char *path, int truncate_flag) { |
| create_parent_dirs(path); |
| |
| int fd = TEMP_FAILURE_RETRY(open(path, |
| O_WRONLY | O_CREAT | truncate_flag | O_CLOEXEC | O_NOFOLLOW, |
| S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); |
| if (fd < 0) { |
| MYLOGE("%s: %s\n", path, strerror(errno)); |
| exit(1); |
| } |
| |
| TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); |
| close(fd); |
| } |
| |
| void redirect_to_file(FILE *redirect, char *path) { |
| _redirect_to_file(redirect, path, O_TRUNC); |
| } |
| |
| void redirect_to_existing_file(FILE *redirect, char *path) { |
| _redirect_to_file(redirect, path, O_APPEND); |
| } |
| |
| static bool should_dump_hal_interface(const char* interface) { |
| for (const char** i = hal_interfaces_to_dump; *i; i++) { |
| if (!strcmp(*i, interface)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| static bool should_dump_native_traces(const char* path) { |
| for (const char** p = native_processes_to_dump; *p; p++) { |
| if (!strcmp(*p, path)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| std::set<int> get_interesting_hal_pids() { |
| using android::hidl::manager::V1_0::IServiceManager; |
| using android::sp; |
| using android::hardware::Return; |
| |
| sp<IServiceManager> manager = IServiceManager::getService(); |
| std::set<int> pids; |
| |
| Return<void> ret = manager->debugDump([&](auto& hals) { |
| for (const auto &info : hals) { |
| if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) { |
| continue; |
| } |
| |
| if (!should_dump_hal_interface(info.interfaceName.c_str())) { |
| continue; |
| } |
| |
| pids.insert(info.pid); |
| } |
| }); |
| |
| if (!ret.isOk()) { |
| MYLOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str()); |
| } |
| |
| return pids; // whether it was okay or not |
| } |
| |
| static bool IsZygote(int pid) { |
| static const std::string kZygotePrefix = "zygote"; |
| |
| std::string cmdline; |
| if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid), |
| &cmdline)) { |
| return true; |
| } |
| |
| return (cmdline.find(kZygotePrefix) == 0); |
| } |
| |
| // Dump Dalvik and native stack traces, return the trace file location (nullptr if none). |
| const char* dump_traces() { |
| DurationReporter duration_reporter("DUMP TRACES"); |
| |
| const std::string temp_file_pattern = "/data/anr/dumptrace_XXXXXX"; |
| |
| const size_t buf_size = temp_file_pattern.length() + 1; |
| std::unique_ptr<char[]> file_name_buf(new char[buf_size]); |
| memcpy(file_name_buf.get(), temp_file_pattern.c_str(), buf_size); |
| |
| // Create a new, empty file to receive all trace dumps. |
| // |
| // TODO: This can be simplified once we remove support for the old style |
| // dumps. We can have a file descriptor passed in to dump_traces instead |
| // of creating a file, closing it and then reopening it again. |
| android::base::unique_fd fd(mkostemp(file_name_buf.get(), O_APPEND | O_CLOEXEC)); |
| if (fd < 0) { |
| MYLOGE("mkostemp on pattern %s: %s\n", file_name_buf.get(), strerror(errno)); |
| return nullptr; |
| } |
| |
| // Nobody should have access to this temporary file except dumpstate, but we |
| // temporarily grant 'read' to 'others' here because this file is created |
| // when tombstoned is still running as root, but dumped after dropping. This |
| // can go away once support for old style dumping has. |
| const int chmod_ret = fchmod(fd, 0666); |
| if (chmod_ret < 0) { |
| MYLOGE("fchmod on %s failed: %s\n", file_name_buf.get(), strerror(errno)); |
| return nullptr; |
| } |
| |
| std::unique_ptr<DIR, decltype(&closedir)> proc(opendir("/proc"), closedir); |
| if (proc.get() == nullptr) { |
| MYLOGE("opendir /proc failed: %s\n", strerror(errno)); |
| return nullptr; |
| } |
| |
| // Number of times process dumping has timed out. If we encounter too many |
| // failures, we'll give up. |
| int timeout_failures = 0; |
| bool dalvik_found = false; |
| |
| const std::set<int> hal_pids = get_interesting_hal_pids(); |
| |
| struct dirent* d; |
| while ((d = readdir(proc.get()))) { |
| int pid = atoi(d->d_name); |
| if (pid <= 0) { |
| continue; |
| } |
| |
| const std::string link_name = android::base::StringPrintf("/proc/%d/exe", pid); |
| std::string exe; |
| if (!android::base::Readlink(link_name, &exe)) { |
| continue; |
| } |
| |
| bool is_java_process; |
| if (exe == "/system/bin/app_process32" || exe == "/system/bin/app_process64") { |
| // Don't bother dumping backtraces for the zygote. |
| if (IsZygote(pid)) { |
| continue; |
| } |
| |
| dalvik_found = true; |
| is_java_process = true; |
| } else if (should_dump_native_traces(exe.c_str()) || hal_pids.find(pid) != hal_pids.end()) { |
| is_java_process = false; |
| } else { |
| // Probably a native process we don't care about, continue. |
| continue; |
| } |
| |
| // If 3 backtrace dumps fail in a row, consider debuggerd dead. |
| if (timeout_failures == 3) { |
| dprintf(fd, "ERROR: Too many stack dump failures, exiting.\n"); |
| break; |
| } |
| |
| const uint64_t start = Nanotime(); |
| const int ret = dump_backtrace_to_file_timeout( |
| pid, is_java_process ? kDebuggerdJavaBacktrace : kDebuggerdNativeBacktrace, |
| is_java_process ? 5 : 20, fd); |
| |
| if (ret == -1) { |
| dprintf(fd, "dumping failed, likely due to a timeout\n"); |
| timeout_failures++; |
| continue; |
| } |
| |
| // We've successfully dumped stack traces, reset the failure count |
| // and write a summary of the elapsed time to the file and continue with the |
| // next process. |
| timeout_failures = 0; |
| |
| dprintf(fd, "[dump %s stack %d: %.3fs elapsed]\n", is_java_process ? "dalvik" : "native", |
| pid, (float)(Nanotime() - start) / NANOS_PER_SEC); |
| } |
| |
| if (!dalvik_found) { |
| MYLOGE("Warning: no Dalvik processes found to dump stacks\n"); |
| } |
| |
| return file_name_buf.release(); |
| } |
| |
| void dump_route_tables() { |
| DurationReporter duration_reporter("DUMP ROUTE TABLES"); |
| if (PropertiesHelper::IsDryRun()) return; |
| const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; |
| ds.DumpFile("RT_TABLES", RT_TABLES_PATH); |
| FILE* fp = fopen(RT_TABLES_PATH, "re"); |
| if (!fp) { |
| printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); |
| return; |
| } |
| char table[16]; |
| // Each line has an integer (the table number), a space, and a string (the table name). We only |
| // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. |
| // Add a fixed max limit so this doesn't go awry. |
| for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { |
| RunCommand("ROUTE TABLE IPv4", {"ip", "-4", "route", "show", "table", table}); |
| RunCommand("ROUTE TABLE IPv6", {"ip", "-6", "route", "show", "table", table}); |
| } |
| fclose(fp); |
| } |
| |
| // TODO: make this function thread safe if sections are generated in parallel. |
| void Dumpstate::UpdateProgress(int32_t delta) { |
| if (progress_ == nullptr) { |
| MYLOGE("UpdateProgress: progress_ not set\n"); |
| return; |
| } |
| |
| // Always update progess so stats can be tuned... |
| bool max_changed = progress_->Inc(delta); |
| |
| // ...but only notifiy listeners when necessary. |
| if (!update_progress_) return; |
| |
| int progress = progress_->Get(); |
| int max = progress_->GetMax(); |
| |
| // adjusts max on the fly |
| if (max_changed && listener_ != nullptr) { |
| listener_->onMaxProgressUpdated(max); |
| } |
| |
| int32_t last_update_delta = progress - last_updated_progress_; |
| if (last_updated_progress_ > 0 && last_update_delta < update_progress_threshold_) { |
| return; |
| } |
| last_updated_progress_ = progress; |
| |
| if (control_socket_fd_ >= 0) { |
| dprintf(control_socket_fd_, "PROGRESS:%d/%d\n", progress, max); |
| fsync(control_socket_fd_); |
| } |
| |
| if (listener_ != nullptr) { |
| if (progress % 100 == 0) { |
| // We don't want to spam logcat, so only log multiples of 100. |
| MYLOGD("Setting progress (%s): %d/%d\n", listener_name_.c_str(), progress, max); |
| } else { |
| // stderr is ignored on normal invocations, but useful when calling |
| // /system/bin/dumpstate directly for debuggging. |
| fprintf(stderr, "Setting progress (%s): %d/%d\n", listener_name_.c_str(), progress, max); |
| } |
| listener_->onProgressUpdated(progress); |
| } |
| } |
| |
| void Dumpstate::TakeScreenshot(const std::string& path) { |
| const std::string& real_path = path.empty() ? screenshot_path_ : path; |
| int status = |
| RunCommand("", {"/system/bin/screencap", "-p", real_path}, |
| CommandOptions::WithTimeout(10).Always().DropRoot().RedirectStderr().Build()); |
| if (status == 0) { |
| MYLOGD("Screenshot saved on %s\n", real_path.c_str()); |
| } else { |
| MYLOGE("Failed to take screenshot on %s\n", real_path.c_str()); |
| } |
| } |
| |
| bool is_dir(const char* pathname) { |
| struct stat info; |
| if (stat(pathname, &info) == -1) { |
| return false; |
| } |
| return S_ISDIR(info.st_mode); |
| } |
| |
| time_t get_mtime(int fd, time_t default_mtime) { |
| struct stat info; |
| if (fstat(fd, &info) == -1) { |
| return default_mtime; |
| } |
| return info.st_mtime; |
| } |
| |
| void dump_emmc_ecsd(const char *ext_csd_path) { |
| // List of interesting offsets |
| struct hex { |
| char str[2]; |
| }; |
| static const size_t EXT_CSD_REV = 192 * sizeof(hex); |
| static const size_t EXT_PRE_EOL_INFO = 267 * sizeof(hex); |
| static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_A = 268 * sizeof(hex); |
| static const size_t EXT_DEVICE_LIFE_TIME_EST_TYP_B = 269 * sizeof(hex); |
| |
| std::string buffer; |
| if (!android::base::ReadFileToString(ext_csd_path, &buffer)) { |
| return; |
| } |
| |
| printf("------ %s Extended CSD ------\n", ext_csd_path); |
| |
| if (buffer.length() < (EXT_CSD_REV + sizeof(hex))) { |
| printf("*** %s: truncated content %zu\n\n", ext_csd_path, buffer.length()); |
| return; |
| } |
| |
| int ext_csd_rev = 0; |
| std::string sub = buffer.substr(EXT_CSD_REV, sizeof(hex)); |
| if (sscanf(sub.c_str(), "%2x", &ext_csd_rev) != 1) { |
| printf("*** %s: EXT_CSD_REV parse error \"%s\"\n\n", ext_csd_path, sub.c_str()); |
| return; |
| } |
| |
| static const char *ver_str[] = { |
| "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0" |
| }; |
| printf("rev 1.%d (MMC %s)\n", ext_csd_rev, |
| (ext_csd_rev < (int)(sizeof(ver_str) / sizeof(ver_str[0]))) ? ver_str[ext_csd_rev] |
| : "Unknown"); |
| if (ext_csd_rev < 7) { |
| printf("\n"); |
| return; |
| } |
| |
| if (buffer.length() < (EXT_PRE_EOL_INFO + sizeof(hex))) { |
| printf("*** %s: truncated content %zu\n\n", ext_csd_path, buffer.length()); |
| return; |
| } |
| |
| int ext_pre_eol_info = 0; |
| sub = buffer.substr(EXT_PRE_EOL_INFO, sizeof(hex)); |
| if (sscanf(sub.c_str(), "%2x", &ext_pre_eol_info) != 1) { |
| printf("*** %s: PRE_EOL_INFO parse error \"%s\"\n\n", ext_csd_path, sub.c_str()); |
| return; |
| } |
| |
| static const char *eol_str[] = { |
| "Undefined", |
| "Normal", |
| "Warning (consumed 80% of reserve)", |
| "Urgent (consumed 90% of reserve)" |
| }; |
| printf( |
| "PRE_EOL_INFO %d (MMC %s)\n", ext_pre_eol_info, |
| eol_str[(ext_pre_eol_info < (int)(sizeof(eol_str) / sizeof(eol_str[0]))) ? ext_pre_eol_info |
| : 0]); |
| |
| for (size_t lifetime = EXT_DEVICE_LIFE_TIME_EST_TYP_A; |
| lifetime <= EXT_DEVICE_LIFE_TIME_EST_TYP_B; |
| lifetime += sizeof(hex)) { |
| int ext_device_life_time_est; |
| static const char *est_str[] = { |
| "Undefined", |
| "0-10% of device lifetime used", |
| "10-20% of device lifetime used", |
| "20-30% of device lifetime used", |
| "30-40% of device lifetime used", |
| "40-50% of device lifetime used", |
| "50-60% of device lifetime used", |
| "60-70% of device lifetime used", |
| "70-80% of device lifetime used", |
| "80-90% of device lifetime used", |
| "90-100% of device lifetime used", |
| "Exceeded the maximum estimated device lifetime", |
| }; |
| |
| if (buffer.length() < (lifetime + sizeof(hex))) { |
| printf("*** %s: truncated content %zu\n", ext_csd_path, buffer.length()); |
| break; |
| } |
| |
| ext_device_life_time_est = 0; |
| sub = buffer.substr(lifetime, sizeof(hex)); |
| if (sscanf(sub.c_str(), "%2x", &ext_device_life_time_est) != 1) { |
| printf("*** %s: DEVICE_LIFE_TIME_EST_TYP_%c parse error \"%s\"\n", ext_csd_path, |
| (unsigned)((lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) / sizeof(hex)) + 'A', |
| sub.c_str()); |
| continue; |
| } |
| printf("DEVICE_LIFE_TIME_EST_TYP_%c %d (MMC %s)\n", |
| (unsigned)((lifetime - EXT_DEVICE_LIFE_TIME_EST_TYP_A) / sizeof(hex)) + 'A', |
| ext_device_life_time_est, |
| est_str[(ext_device_life_time_est < (int)(sizeof(est_str) / sizeof(est_str[0]))) |
| ? ext_device_life_time_est |
| : 0]); |
| } |
| |
| printf("\n"); |
| } |