Remove mk_payload.cc
It seems not be used by anything
Test: m
Change-Id: Icb8c9163a2ef8af92a2bb34c2f2100ce7d00a9e0
diff --git a/microdroid/payload/mk_payload.cc b/microdroid/payload/mk_payload.cc
deleted file mode 100644
index d31333f..0000000
--- a/microdroid/payload/mk_payload.cc
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- * Copyright (C) 2021 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 <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <fstream>
-#include <iostream>
-#include <optional>
-#include <string>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/result.h>
-#include <image_aggregator.h>
-#include <json/json.h>
-
-#include "microdroid/metadata.h"
-
-using android::base::Dirname;
-using android::base::ErrnoError;
-using android::base::Error;
-using android::base::Result;
-using android::base::unique_fd;
-using android::microdroid::ApexPayload;
-using android::microdroid::ApkPayload;
-using android::microdroid::Metadata;
-using android::microdroid::WriteMetadata;
-
-using cuttlefish::AlignToPartitionSize;
-using cuttlefish::CreateCompositeDisk;
-using cuttlefish::kLinuxFilesystem;
-using cuttlefish::MultipleImagePartition;
-
-Result<uint32_t> GetFileSize(const std::string& path) {
- struct stat st;
- if (lstat(path.c_str(), &st) == -1) {
- return ErrnoError() << "Can't lstat " << path;
- }
- return static_cast<uint32_t>(st.st_size);
-}
-
-std::string RelativeTo(const std::string& path, const std::string& dirname) {
- bool is_absolute = !path.empty() && path[0] == '/';
- if (is_absolute || dirname == ".") {
- return path;
- } else {
- return dirname + "/" + path;
- }
-}
-
-// Returns `append` is appended to the end of filename preserving the extension.
-std::string AppendFileName(const std::string& filename, const std::string& append) {
- size_t pos = filename.find_last_of('.');
- if (pos == std::string::npos) {
- return filename + append;
- } else {
- return filename.substr(0, pos) + append + filename.substr(pos);
- }
-}
-
-struct ApexConfig {
- std::string name; // the apex name
- std::string path; // the path to the apex file
- // absolute or relative to the config file
-};
-
-struct ApkConfig {
- std::string name;
- std::string path;
- std::string idsig_path;
-};
-
-struct Config {
- std::string dirname; // config file's direname to resolve relative paths in the config
-
- std::vector<ApexConfig> apexes;
- std::optional<ApkConfig> apk;
- // This is a path in the guest side
- std::optional<std::string> payload_config_path;
-};
-
-#define DO(expr) \
- if (auto res = (expr); !res.ok()) return res.error()
-
-Result<void> ParseJson(const Json::Value& value, std::string& s) {
- if (!value.isString()) {
- return Error() << "should be a string: " << value;
- }
- s = value.asString();
- return {};
-}
-
-template <typename T>
-Result<void> ParseJson(const Json::Value& value, std::optional<T>& s) {
- if (value.isNull()) {
- s.reset();
- return {};
- }
- s.emplace();
- return ParseJson(value, *s);
-}
-
-template <typename T>
-Result<void> ParseJson(const Json::Value& values, std::vector<T>& parsed) {
- for (const Json::Value& value : values) {
- T t;
- DO(ParseJson(value, t));
- parsed.push_back(std::move(t));
- }
- return {};
-}
-
-Result<void> ParseJson(const Json::Value& value, ApexConfig& apex_config) {
- DO(ParseJson(value["name"], apex_config.name));
- DO(ParseJson(value["path"], apex_config.path));
- return {};
-}
-
-Result<void> ParseJson(const Json::Value& value, ApkConfig& apk_config) {
- DO(ParseJson(value["name"], apk_config.name));
- DO(ParseJson(value["path"], apk_config.path));
- DO(ParseJson(value["idsig_path"], apk_config.idsig_path));
- return {};
-}
-
-Result<void> ParseJson(const Json::Value& value, Config& config) {
- DO(ParseJson(value["apexes"], config.apexes));
- DO(ParseJson(value["apk"], config.apk));
- DO(ParseJson(value["payload_config_path"], config.payload_config_path));
- return {};
-}
-
-Result<Config> LoadConfig(const std::string& config_file) {
- std::ifstream in(config_file);
- Json::CharReaderBuilder builder;
- Json::Value root;
- Json::String errs;
- if (!parseFromStream(builder, in, &root, &errs)) {
- return Error() << errs;
- }
-
- Config config;
- config.dirname = Dirname(config_file);
- DO(ParseJson(root, config));
- return config;
-}
-
-#undef DO
-
-Result<void> MakeMetadata(const Config& config, const std::string& filename) {
- Metadata metadata;
- metadata.set_version(1);
-
- for (const auto& apex_config : config.apexes) {
- auto* apex = metadata.add_apexes();
- apex->set_name(apex_config.name);
- apex->set_partition_name(apex_config.name);
- apex->set_is_factory(true);
- }
-
- if (config.apk.has_value()) {
- auto* apk = metadata.mutable_apk();
- apk->set_name(config.apk->name);
- apk->set_payload_partition_name("microdroid-apk");
- apk->set_idsig_partition_name("microdroid-apk-idsig");
- }
-
- if (config.payload_config_path.has_value()) {
- *metadata.mutable_config_path() = config.payload_config_path.value();
- }
-
- std::ofstream out(filename);
- return WriteMetadata(metadata, out);
-}
-
-// fill zeros to align |file_path|'s size to BLOCK_SIZE(4096) boundary.
-// return true when the filler is needed.
-Result<bool> ZeroFiller(const std::string& file_path, const std::string& filler_path) {
- auto file_size = GetFileSize(file_path);
- if (!file_size.ok()) {
- return file_size.error();
- }
- auto disk_size = AlignToPartitionSize(*file_size);
- if (disk_size <= *file_size) {
- return false;
- }
- unique_fd fd(TEMP_FAILURE_RETRY(open(filler_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0600)));
- if (fd.get() == -1) {
- return ErrnoError() << "open(" << filler_path << ") failed.";
- }
- if (ftruncate(fd.get(), disk_size - *file_size) == -1) {
- return ErrnoError() << "ftruncate(" << filler_path << ") failed.";
- }
- return true;
-}
-
-Result<void> MakePayload(const Config& config, const std::string& metadata_file,
- const std::string& output_file) {
- std::vector<MultipleImagePartition> partitions;
-
- int filler_count = 0;
- auto add_partition = [&](auto partition_name, auto file_path) -> Result<void> {
- std::vector<std::string> image_files{file_path};
-
- std::string filler_path =
- AppendFileName(output_file, "-filler-" + std::to_string(filler_count++));
- if (auto ret = ZeroFiller(file_path, filler_path); !ret.ok()) {
- return ret.error();
- } else if (*ret) {
- image_files.push_back(filler_path);
- }
- partitions.push_back(MultipleImagePartition{
- .label = partition_name,
- .image_file_paths = image_files,
- .type = kLinuxFilesystem,
- .read_only = true,
- });
- return {};
- };
-
- // put metadata at the first partition
- partitions.push_back(MultipleImagePartition{
- .label = "payload-metadata",
- .image_file_paths = {metadata_file},
- .type = kLinuxFilesystem,
- .read_only = true,
- });
- // put apexes at the subsequent partitions
- for (size_t i = 0; i < config.apexes.size(); i++) {
- const auto& apex_config = config.apexes[i];
- std::string apex_path = RelativeTo(apex_config.path, config.dirname);
- if (auto ret = add_partition("microdroid-apex-" + std::to_string(i), apex_path);
- !ret.ok()) {
- return ret.error();
- }
- }
- // put apk and its idsig
- if (config.apk.has_value()) {
- std::string apk_path = RelativeTo(config.apk->path, config.dirname);
- if (auto ret = add_partition("microdroid-apk", apk_path); !ret.ok()) {
- return ret.error();
- }
- std::string idsig_path = RelativeTo(config.apk->idsig_path, config.dirname);
- if (auto ret = add_partition("microdroid-apk-idsig", idsig_path); !ret.ok()) {
- return ret.error();
- }
- }
-
- const std::string gpt_header = AppendFileName(output_file, "-header");
- const std::string gpt_footer = AppendFileName(output_file, "-footer");
- CreateCompositeDisk(partitions, gpt_header, gpt_footer, output_file);
- return {};
-}
-
-int main(int argc, char** argv) {
- if (argc < 3 || argc > 4) {
- std::cerr << "Usage: " << argv[0] << " [--metadata-only] <config> <output>\n";
- return 1;
- }
- int arg_index = 1;
- bool metadata_only = false;
- if (strcmp(argv[arg_index], "--metadata-only") == 0) {
- metadata_only = true;
- arg_index++;
- }
-
- auto config = LoadConfig(argv[arg_index++]);
- if (!config.ok()) {
- std::cerr << "bad config: " << config.error() << '\n';
- return 1;
- }
-
- const std::string output_file(argv[arg_index++]);
- const std::string metadata_file =
- metadata_only ? output_file : AppendFileName(output_file, "-metadata");
-
- if (const auto res = MakeMetadata(*config, metadata_file); !res.ok()) {
- std::cerr << res.error() << '\n';
- return 1;
- }
- if (metadata_only) {
- return 0;
- }
- if (const auto res = MakePayload(*config, metadata_file, output_file); !res.ok()) {
- std::cerr << res.error() << '\n';
- return 1;
- }
-
- return 0;
-}