| // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <set> |
| #include <string> |
| #include <gflags/gflags.h> |
| #include <glib.h> |
| #include "base/command_line.h" |
| #include "chromeos/obsolete_logging.h" |
| #include "update_engine/delta_diff_generator.h" |
| #include "update_engine/subprocess.h" |
| #include "update_engine/update_metadata.pb.h" |
| #include "update_engine/utils.h" |
| |
| DEFINE_string(old_dir, "", |
| "Directory where the old rootfs is loop mounted read-only"); |
| DEFINE_string(new_dir, "", |
| "Directory where the new rootfs is loop mounted read-only"); |
| DEFINE_string(old_image, "", "Path to the old rootfs"); |
| DEFINE_string(new_image, "", "Path to the new rootfs"); |
| DEFINE_string(out_file, "", "Path to output file"); |
| |
| // This file contains a simple program that takes an old path, a new path, |
| // and an output file as arguments and the path to an output file and |
| // generates a delta that can be sent to Chrome OS clients. |
| |
| using std::set; |
| using std::string; |
| |
| namespace chromeos_update_engine { |
| |
| namespace { |
| |
| bool IsDir(const char* path) { |
| struct stat stbuf; |
| TEST_AND_RETURN_FALSE_ERRNO(lstat(path, &stbuf) == 0); |
| return S_ISDIR(stbuf.st_mode); |
| } |
| |
| int Main(int argc, char** argv) { |
| g_thread_init(NULL); |
| google::ParseCommandLineFlags(&argc, &argv, true); |
| CommandLine::Init(argc, argv); |
| Subprocess::Init(); |
| logging::InitLogging("delta_generator.log", |
| logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG, |
| logging::DONT_LOCK_LOG_FILE, |
| logging::APPEND_TO_OLD_LOG_FILE); |
| if (FLAGS_old_dir.empty() || FLAGS_new_dir.empty() || |
| FLAGS_old_image.empty() || FLAGS_new_image.empty() || |
| FLAGS_out_file.empty()) { |
| LOG(FATAL) << "Missing required argument(s)"; |
| } |
| if ((!IsDir(FLAGS_old_dir.c_str())) || (!IsDir(FLAGS_new_dir.c_str()))) { |
| LOG(FATAL) << "old_dir or new_dir not directory"; |
| } |
| |
| DeltaDiffGenerator::GenerateDeltaUpdateFile(FLAGS_old_dir, |
| FLAGS_old_image, |
| FLAGS_new_dir, |
| FLAGS_new_image, |
| FLAGS_out_file); |
| |
| return 0; |
| } |
| |
| } // namespace {} |
| |
| } // namespace chromeos_update_engine |
| |
| int main(int argc, char** argv) { |
| return chromeos_update_engine::Main(argc, argv); |
| } |