1 files changed, 0 insertions, 324 deletions

diff --git a/otautil/logging.cpp b/otautil/logging.cpp
deleted file mode 100644
index 3db0e8ac2..000000000
--- a/otautil/logging.cpp
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- * Copyright (C) 2016 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 "otautil/logging.h"
-
-#include <dirent.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/klog.h>
-#include <sys/types.h>
-
-#include <algorithm>
-#include <memory>
-#include <string>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/unique_fd.h>
-#include <private/android_filesystem_config.h> /* for AID_SYSTEM */
-#include <private/android_logger.h>            /* private pmsg functions */
-#include <selinux/label.h>
-
-#include "otautil/dirutil.h"
-#include "otautil/paths.h"
-#include "otautil/roots.h"
-
-constexpr const char* LOG_FILE = "/cache/recovery/log";
-constexpr const char* LAST_INSTALL_FILE = "/cache/recovery/last_install";
-constexpr const char* LAST_KMSG_FILE = "/cache/recovery/last_kmsg";
-constexpr const char* LAST_LOG_FILE = "/cache/recovery/last_log";
-
-constexpr const char* LAST_KMSG_FILTER = "recovery/last_kmsg";
-constexpr const char* LAST_LOG_FILTER = "recovery/last_log";
-
-constexpr const char* CACHE_LOG_DIR = "/cache/recovery";
-
-static struct selabel_handle* logging_sehandle;
-
-void SetLoggingSehandle(selabel_handle* handle) {
-  logging_sehandle = handle;
-}
-
-// fopen(3)'s the given file, by mounting volumes and making parent dirs as necessary. Returns the
-// file pointer, or nullptr on error.
-static FILE* fopen_path(const std::string& path, const char* mode, const selabel_handle* sehandle) {
-  if (ensure_path_mounted(path) != 0) {
-    LOG(ERROR) << "Can't mount " << path;
-    return nullptr;
-  }
-
-  // When writing, try to create the containing directory, if necessary. Use generous permissions,
-  // the system (init.rc) will reset them.
-  if (strchr("wa", mode[0])) {
-    mkdir_recursively(path, 0777, true, sehandle);
-  }
-  return fopen(path.c_str(), mode);
-}
-
-void check_and_fclose(FILE* fp, const std::string& name) {
-  fflush(fp);
-  if (fsync(fileno(fp)) == -1) {
-    PLOG(ERROR) << "Failed to fsync " << name;
-  }
-  if (ferror(fp)) {
-    PLOG(ERROR) << "Error in " << name;
-  }
-  fclose(fp);
-}
-
-// close a file, log an error if the error indicator is set
-ssize_t logbasename(log_id_t /* id */, char /* prio */, const char* filename, const char* /* buf */,
-                    size_t len, void* arg) {
-  bool* do_rotate = static_cast<bool*>(arg);
-  if (std::string(LAST_KMSG_FILTER).find(filename) != std::string::npos ||
-      std::string(LAST_LOG_FILTER).find(filename) != std::string::npos) {
-    *do_rotate = true;
-  }
-  return len;
-}
-
-ssize_t logrotate(log_id_t id, char prio, const char* filename, const char* buf, size_t len,
-                  void* arg) {
-  bool* do_rotate = static_cast<bool*>(arg);
-  if (!*do_rotate) {
-    return __android_log_pmsg_file_write(id, prio, filename, buf, len);
-  }
-
-  std::string name(filename);
-  size_t dot = name.find_last_of('.');
-  std::string sub = name.substr(0, dot);
-
-  if (std::string(LAST_KMSG_FILTER).find(sub) == std::string::npos &&
-      std::string(LAST_LOG_FILTER).find(sub) == std::string::npos) {
-    return __android_log_pmsg_file_write(id, prio, filename, buf, len);
-  }
-
-  // filename rotation
-  if (dot == std::string::npos) {
-    name += ".1";
-  } else {
-    std::string number = name.substr(dot + 1);
-    if (!isdigit(number[0])) {
-      name += ".1";
-    } else {
-      size_t i;
-      if (!android::base::ParseUint(number, &i)) {
-        LOG(ERROR) << "failed to parse uint in " << number;
-        return -1;
-      }
-      name = sub + "." + std::to_string(i + 1);
-    }
-  }
-
-  return __android_log_pmsg_file_write(id, prio, name.c_str(), buf, len);
-}
-
-// Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max.
-// Similarly rename last_kmsg -> last_kmsg.1 -> ... -> last_kmsg.$max.
-// Overwrite any existing last_log.$max and last_kmsg.$max.
-void rotate_logs(const char* last_log_file, const char* last_kmsg_file) {
-  // Logs should only be rotated once.
-  static bool rotated = false;
-  if (rotated) {
-    return;
-  }
-  rotated = true;
-
-  for (int i = KEEP_LOG_COUNT - 1; i >= 0; --i) {
-    std::string old_log = android::base::StringPrintf("%s", last_log_file);
-    if (i > 0) {
-      old_log += "." + std::to_string(i);
-    }
-    std::string new_log = android::base::StringPrintf("%s.%d", last_log_file, i + 1);
-    // Ignore errors if old_log doesn't exist.
-    rename(old_log.c_str(), new_log.c_str());
-
-    std::string old_kmsg = android::base::StringPrintf("%s", last_kmsg_file);
-    if (i > 0) {
-      old_kmsg += "." + std::to_string(i);
-    }
-    std::string new_kmsg = android::base::StringPrintf("%s.%d", last_kmsg_file, i + 1);
-    rename(old_kmsg.c_str(), new_kmsg.c_str());
-  }
-}
-
-// Writes content to the current pmsg session.
-static ssize_t __pmsg_write(const std::string& filename, const std::string& buf) {
-  return __android_log_pmsg_file_write(LOG_ID_SYSTEM, ANDROID_LOG_INFO, filename.c_str(),
-                                       buf.data(), buf.size());
-}
-
-void copy_log_file_to_pmsg(const std::string& source, const std::string& destination) {
-  std::string content;
-  android::base::ReadFileToString(source, &content);
-  __pmsg_write(destination, content);
-}
-
-// How much of the temp log we have copied to the copy in cache.
-static off_t tmplog_offset = 0;
-
-void reset_tmplog_offset() {
-  tmplog_offset = 0;
-}
-
-static void copy_log_file(const std::string& source, const std::string& destination, bool append) {
-  FILE* dest_fp = fopen_path(destination, append ? "ae" : "we", logging_sehandle);
-  if (dest_fp == nullptr) {
-    PLOG(ERROR) << "Can't open " << destination;
-  } else {
-    FILE* source_fp = fopen(source.c_str(), "re");
-    if (source_fp != nullptr) {
-      if (append) {
-        fseeko(source_fp, tmplog_offset, SEEK_SET);  // Since last write
-      }
-      char buf[4096];
-      size_t bytes;
-      while ((bytes = fread(buf, 1, sizeof(buf), source_fp)) != 0) {
-        fwrite(buf, 1, bytes, dest_fp);
-      }
-      if (append) {
-        tmplog_offset = ftello(source_fp);
-      }
-      check_and_fclose(source_fp, source);
-    }
-    check_and_fclose(dest_fp, destination);
-  }
-}
-
-void copy_logs(bool save_current_log) {
-  // We only rotate and record the log of the current session if explicitly requested. This usually
-  // happens after wipes, installation from BCB or menu selections. This is to avoid unnecessary
-  // rotation (and possible deletion) of log files, if it does not do anything loggable.
-  if (!save_current_log) {
-    return;
-  }
-
-  // Always write to pmsg, this allows the OTA logs to be caught in `logcat -L`.
-  copy_log_file_to_pmsg(Paths::Get().temporary_log_file(), LAST_LOG_FILE);
-  copy_log_file_to_pmsg(Paths::Get().temporary_install_file(), LAST_INSTALL_FILE);
-
-  // We can do nothing for now if there's no /cache partition.
-  if (!HasCache()) {
-    return;
-  }
-
-  ensure_path_mounted(LAST_LOG_FILE);
-  ensure_path_mounted(LAST_KMSG_FILE);
-  rotate_logs(LAST_LOG_FILE, LAST_KMSG_FILE);
-
-  // Copy logs to cache so the system can find out what happened.
-  copy_log_file(Paths::Get().temporary_log_file(), LOG_FILE, true);
-  copy_log_file(Paths::Get().temporary_log_file(), LAST_LOG_FILE, false);
-  copy_log_file(Paths::Get().temporary_install_file(), LAST_INSTALL_FILE, false);
-  save_kernel_log(LAST_KMSG_FILE);
-  chmod(LOG_FILE, 0600);
-  chown(LOG_FILE, AID_SYSTEM, AID_SYSTEM);
-  chmod(LAST_KMSG_FILE, 0600);
-  chown(LAST_KMSG_FILE, AID_SYSTEM, AID_SYSTEM);
-  chmod(LAST_LOG_FILE, 0640);
-  chmod(LAST_INSTALL_FILE, 0644);
-  chown(LAST_INSTALL_FILE, AID_SYSTEM, AID_SYSTEM);
-  sync();
-}
-
-// Read from kernel log into buffer and write out to file.
-void save_kernel_log(const char* destination) {
-  int klog_buf_len = klogctl(KLOG_SIZE_BUFFER, 0, 0);
-  if (klog_buf_len <= 0) {
-    PLOG(ERROR) << "Error getting klog size";
-    return;
-  }
-
-  std::string buffer(klog_buf_len, 0);
-  int n = klogctl(KLOG_READ_ALL, &buffer[0], klog_buf_len);
-  if (n == -1) {
-    PLOG(ERROR) << "Error in reading klog";
-    return;
-  }
-  buffer.resize(n);
-  android::base::WriteStringToFile(buffer, destination);
-}
-
-std::vector<saved_log_file> ReadLogFilesToMemory() {
-  ensure_path_mounted("/cache");
-
-  struct dirent* de;
-  std::unique_ptr<DIR, decltype(&closedir)> d(opendir(CACHE_LOG_DIR), closedir);
-  if (!d) {
-    if (errno != ENOENT) {
-      PLOG(ERROR) << "Failed to opendir " << CACHE_LOG_DIR;
-    }
-    return {};
-  }
-
-  std::vector<saved_log_file> log_files;
-  while ((de = readdir(d.get())) != nullptr) {
-    if (strncmp(de->d_name, "last_", 5) == 0 || strcmp(de->d_name, "log") == 0) {
-      std::string path = android::base::StringPrintf("%s/%s", CACHE_LOG_DIR, de->d_name);
-
-      struct stat sb;
-      if (stat(path.c_str(), &sb) != 0) {
-        PLOG(ERROR) << "Failed to stat " << path;
-        continue;
-      }
-      // Truncate files to 512kb
-      size_t read_size = std::min<size_t>(sb.st_size, 1 << 19);
-      std::string data(read_size, '\0');
-
-      android::base::unique_fd log_fd(TEMP_FAILURE_RETRY(open(path.c_str(), O_RDONLY)));
-      if (log_fd == -1 || !android::base::ReadFully(log_fd, data.data(), read_size)) {
-        PLOG(ERROR) << "Failed to read log file " << path;
-        continue;
-      }
-
-      log_files.emplace_back(saved_log_file{ path, sb, data });
-    }
-  }
-
-  return log_files;
-}
-
-bool RestoreLogFilesAfterFormat(const std::vector<saved_log_file>& log_files) {
-  // Re-create the log dir and write back the log entries.
-  if (ensure_path_mounted(CACHE_LOG_DIR) != 0) {
-    PLOG(ERROR) << "Failed to mount " << CACHE_LOG_DIR;
-    return false;
-  }
-
-  if (mkdir_recursively(CACHE_LOG_DIR, 0777, false, logging_sehandle) != 0) {
-    PLOG(ERROR) << "Failed to create " << CACHE_LOG_DIR;
-    return false;
-  }
-
-  for (const auto& log : log_files) {
-    if (!android::base::WriteStringToFile(log.data, log.name, log.sb.st_mode, log.sb.st_uid,
-                                          log.sb.st_gid)) {
-      PLOG(ERROR) << "Failed to write to " << log.name;
-    }
-  }
-
-  // Any part of the log we'd copied to cache is now gone.
-  // Reset the pointer so we copy from the beginning of the temp
-  // log.
-  reset_tmplog_offset();
-  copy_logs(true /* save_current_log */);
-
-  return true;
-}