From 316e9717461890dd319dc370970069fe4532a561 Mon Sep 17 00:00:00 2001 From: xunchang Date: Fri, 12 Apr 2019 16:22:15 -0700 Subject: Move wipe cache|data to libinstall Therefore, libinstall becomes the sole owner to handle the request from minadbd service. The change also includes 1. move logging.cpp out of librecovery 2. drop the dependency on common.h 3. now it's more sensible to move the wipe_cache as part of install_package. move the wipe_cache to the end of the function. Bug: 130166585 Test: wipe data and cache from menu Change-Id: I6f356dccdb38015c50acf756bac246f87c30fc1f --- logging.cpp | 244 ------------------------------------------------------------ 1 file changed, 244 deletions(-) delete mode 100644 logging.cpp (limited to 'logging.cpp') diff --git a/logging.cpp b/logging.cpp deleted file mode 100644 index 48f9ec317..000000000 --- a/logging.cpp +++ /dev/null @@ -1,244 +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 "logging.h" - -#include -#include -#include -#include - -#include - -#include -#include -#include -#include -#include /* for AID_SYSTEM */ -#include /* private pmsg functions */ - -#include "common.h" -#include "otautil/dirutil.h" -#include "otautil/paths.h" -#include "otautil/roots.h" - -static constexpr const char* LOG_FILE = "/cache/recovery/log"; -static constexpr const char* LAST_INSTALL_FILE = "/cache/recovery/last_install"; -static constexpr const char* LAST_KMSG_FILE = "/cache/recovery/last_kmsg"; -static constexpr const char* LAST_LOG_FILE = "/cache/recovery/last_log"; - -static const std::string LAST_KMSG_FILTER = "recovery/last_kmsg"; -static const std::string LAST_LOG_FILTER = "recovery/last_log"; - -// 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) { - 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(arg); - if (LAST_KMSG_FILTER.find(filename) != std::string::npos || - 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(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 (LAST_KMSG_FILTER.find(sub) == std::string::npos && - 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; -} - -void copy_log_file(const std::string& source, const std::string& destination, bool append) { - FILE* dest_fp = fopen_path(destination, append ? "ae" : "we"); - 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 modified_flash, bool has_cache) { - // We only rotate and record the log of the current session if there are actual attempts to modify - // the flash, such as wipes, installs 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 (!modified_flash) { - 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 (!has_cache) { - 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); -} -- cgit v1.2.3