diff options
Diffstat (limited to 'cmds/dumpstate/dumpstate.cpp')
| -rw-r--r-- | cmds/dumpstate/dumpstate.cpp | 980 |
1 files changed, 975 insertions, 5 deletions
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp index cc745708c8..2bcb17deee 100644 --- a/cmds/dumpstate/dumpstate.cpp +++ b/cmds/dumpstate/dumpstate.cpp @@ -22,6 +22,8 @@ #include <inttypes.h> #include <libgen.h> #include <limits.h> +#include <math.h> +#include <poll.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> @@ -32,6 +34,13 @@ #include <sys/stat.h> #include <sys/time.h> #include <sys/wait.h> +#include <signal.h> +#include <stdarg.h> +#include <string.h> +#include <sys/capability.h> +#include <sys/inotify.h> +#include <sys/klog.h> +#include <time.h> #include <unistd.h> #include <chrono> @@ -58,10 +67,12 @@ #include <binder/IServiceManager.h> #include <cutils/native_handle.h> #include <cutils/properties.h> +#include <cutils/sockets.h> #include <debuggerd/client.h> #include <dumpsys.h> #include <dumputils/dump_utils.h> #include <hidl/ServiceManagement.h> +#include <log/log.h> #include <openssl/sha.h> #include <private/android_filesystem_config.h> #include <private/android_logger.h> @@ -96,6 +107,26 @@ using android::os::dumpstate::DumpFileToFd; using android::os::dumpstate::DumpstateSectionReporter; 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); +} + +// 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(); + typedef Dumpstate::ConsentCallback::ConsentResult UserConsentResult; /* read before root is shed */ @@ -132,7 +163,6 @@ static const std::string ANR_DIR = "/data/anr/"; static const std::string ANR_FILE_PREFIX = "anr_"; // TODO: temporary variables and functions used during C++ refactoring -static Dumpstate& ds = Dumpstate::GetInstance(); #define RETURN_IF_USER_DENIED_CONSENT() \ if (ds.IsUserConsentDenied()) { \ @@ -234,10 +264,6 @@ int64_t GetModuleMetadataVersion() { } // namespace os } // namespace android -static int RunCommand(const std::string& title, const std::vector<std::string>& fullCommand, - const CommandOptions& options = CommandOptions::DEFAULT) { - return ds.RunCommand(title, fullCommand, options); -} static void RunDumpsys(const std::string& title, const std::vector<std::string>& dumpsysArgs, const CommandOptions& options = Dumpstate::DEFAULT_DUMPSYS, long dumpsysTimeoutMs = 0) { @@ -2768,3 +2794,947 @@ int run_main(int argc, char* argv[]) { exit(2); } } + +// TODO(111441001): Default DumpOptions to sensible values. +Dumpstate::Dumpstate(const std::string& version) + : pid_(getpid()), + options_(new Dumpstate::DumpOptions()), + 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 logcat_only) + : title_(title), logcat_only_(logcat_only) { + if (!title_.empty()) { + started_ = Nanotime(); + } +} + +DurationReporter::~DurationReporter() { + if (!title_.empty()) { + float elapsed = (float)(Nanotime() - started_) / NANOS_PER_SEC; + if (elapsed < .5f) { + return; + } + MYLOGD("Duration of '%s': %.2fs\n", title_.c_str(), elapsed); + if (logcat_only_) { + return; + } + // Use "Yoda grammar" to make it easier to grep|sort sections. + printf("------ %.3fs was the duration of '%s' ------\n", elapsed, 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_sec) { + bool changed = false; + if (delta_sec >= 0) { + progress_ += delta_sec; + 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 GetPath(bugreport_internal_dir_, suffix); +} + +std::string Dumpstate::GetPath(const std::string& directory, const std::string& suffix) const { + return android::base::StringPrintf("%s/%s-%s%s", directory.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))) { + if (ds.IsUserConsentDenied()) { + MYLOGE( + "Returning early because user denied consent to share bugreport with calling app."); + closedir(d); + return; + } + 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))) { + if (ds.IsUserConsentDenied()) { + MYLOGE( + "Returning early because user denied consent to share bugreport with calling app."); + closedir(d); + return; + } + 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, nullptr, 0); + if (size <= 0) { + printf("Unexpected klogctl return value: %d\n\n", size); + return; + } + char *buf = (char *) malloc(size + 1); + if (buf == nullptr) { + 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 = nullptr; + 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 == nullptr) { + 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 = nullptr) { + 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)(nullptr, 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 dumpsysTimeoutMs) { + long timeout_ms = dumpsysTimeoutMs > 0 ? dumpsysTimeoutMs : options.TimeoutInMs(); + std::vector<std::string> dumpsys = {"/system/bin/dumpsys", "-T", std::to_string(timeout_ms)}; + 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)); + return -1; + } + fcntl(s, F_SETFD, FD_CLOEXEC); + + // Set backlog to 0 to make sure that queue size will be minimum. + // In Linux, because the minimum queue will be 1, connect() will be blocked + // if the other clients already called connect() and the connection request was not accepted. + if (listen(s, 0) < 0) { + MYLOGE("listen(control socket): %s\n", strerror(errno)); + return -1; + } + + struct sockaddr addr; + socklen_t alen = sizeof(addr); + int fd = accept(s, &addr, &alen); + + // Close socket just after accept(), to make sure that connect() by client will get error + // when the socket is used by the other services. + // There is still a race condition possibility between accept and close, but there is no way + // to close-on-accept atomically. + // See detail; b/123306389#comment25 + close(s); + + if (fd < 0) { + MYLOGE("accept(control socket): %s\n", strerror(errno)); + return -1; + } + + return fd; +} + +/* redirect output to a service control socket */ +bool redirect_to_socket(FILE* redirect, const char* service) { + int fd = open_socket(service); + if (fd == -1) { + return false; + } + fflush(redirect); + // TODO: handle dup2 failure + TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); + close(fd); + return true; +} + +// 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++ = '/'; + } + } +} + +bool _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)); + return false; + } + + TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); + close(fd); + return true; +} + +bool redirect_to_file(FILE* redirect, char* path) { + return _redirect_to_file(redirect, path, O_TRUNC); +} + +bool redirect_to_existing_file(FILE* redirect, char* path) { + return _redirect_to_file(redirect, path, O_APPEND); +} + +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_sec) { + if (progress_ == nullptr) { + MYLOGE("UpdateProgress: progress_ not set\n"); + return; + } + + // Always update progess so stats can be tuned... + bool max_changed = progress_->Inc(delta_sec); + + // ...but only notifiy listeners when necessary. + if (!options_->do_progress_updates) 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_); + } + + int percent = 100 * progress / max; + if (listener_ != nullptr) { + if (percent % 5 == 0) { + // We don't want to spam logcat, so only log multiples of 5. + MYLOGD("Setting progress (%s): %d/%d (%d%%)\n", listener_name_.c_str(), progress, max, + percent); + } else { + // stderr is ignored on normal invocations, but useful when calling + // /system/bin/dumpstate directly for debuggging. + fprintf(stderr, "Setting progress (%s): %d/%d (%d%%)\n", listener_name_.c_str(), + progress, max, percent); + } + // TODO(b/111441001): Remove in favor of onProgress + listener_->onProgressUpdated(progress); + + listener_->onProgress(percent); + } +} + +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"); +} + |