| /* |
| * Copyright (C) 2022 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 "Apex.h" |
| |
| #include <android-base/format.h> |
| #include <android-base/logging.h> |
| #include <android-base/strings.h> |
| |
| #include "com_android_apex.h" |
| #include "constants-private.h" |
| |
| using android::base::StartsWith; |
| |
| namespace android { |
| namespace vintf { |
| namespace details { |
| |
| status_t Apex::DeviceVintfDirs(FileSystem* fileSystem, std::vector<std::string>* dirs, |
| std::string* error) { |
| std::vector<std::string> vendor; |
| std::vector<std::string> odm; |
| |
| // Update cached mtime_ |
| int64_t mtime; |
| auto status = fileSystem->modifiedTime(kApexInfoFile, &mtime, error); |
| |
| if (status != OK) { |
| switch (status) { |
| case NAME_NOT_FOUND: |
| status = OK; |
| break; |
| case -EACCES: |
| // Don't error out on access errors, but log it |
| LOG(WARNING) << "APEX Device VINTF Dirs: EACCES: " |
| << (error ? *error : "(unknown error message)"); |
| status = OK; |
| break; |
| default: |
| break; |
| } |
| |
| if ((status == OK) && (error)) { |
| error->clear(); |
| } |
| |
| return status; |
| } |
| |
| mtime_ = mtime; |
| |
| // Load apex-info-list |
| std::string xml; |
| status = fileSystem->fetch(kApexInfoFile, &xml, error); |
| if (status == NAME_NOT_FOUND) { |
| if (error) { |
| error->clear(); |
| } |
| return OK; |
| } |
| if (status != OK) return status; |
| |
| auto apexInfoList = com::android::apex::parseApexInfoList(xml.c_str()); |
| if (!apexInfoList.has_value()) { |
| if (error) { |
| *error = std::string("Not a valid XML ") + kApexInfoFile; |
| } |
| return UNKNOWN_ERROR; |
| } |
| |
| // Get vendor apex vintf dirs |
| for (const auto& apexInfo : apexInfoList->getApexInfo()) { |
| // Skip non-active apexes |
| if (!apexInfo.getIsActive()) continue; |
| // Skip if no preinstalled paths. This shouldn't happen but XML schema says it's optional. |
| if (!apexInfo.hasPreinstalledModulePath()) continue; |
| |
| const std::string& path = apexInfo.getPreinstalledModulePath(); |
| if (StartsWith(path, "/vendor/apex/") || StartsWith(path, "/system/vendor/apex/")) { |
| dirs->push_back(fmt::format("/apex/{}/" VINTF_SUB_DIR, apexInfo.getModuleName())); |
| } |
| } |
| return OK; |
| } |
| |
| // Returns true when /apex/apex-info-list.xml is updated |
| bool Apex::HasUpdate(FileSystem* fileSystem) const { |
| int64_t mtime{}; |
| std::string error; |
| status_t status = fileSystem->modifiedTime(kApexInfoFile, &mtime, &error); |
| if (status == NAME_NOT_FOUND) { |
| return false; |
| } |
| if (status != OK) { |
| LOG(ERROR) << error; |
| return false; |
| } |
| return mtime != mtime_; |
| } |
| |
| } // namespace details |
| } // namespace vintf |
| } // namespace android |