1 // 2 // Copyright (C) 2010 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #include <errno.h> 18 #include <fcntl.h> 19 #include <sys/stat.h> 20 #include <sys/types.h> 21 #include <unistd.h> 22 #include <xz.h> 23 24 #include <string> 25 #include <vector> 26 27 #include <base/logging.h> 28 #include <base/strings/string_number_conversions.h> 29 #include <base/strings/string_split.h> 30 #include <brillo/flag_helper.h> 31 #include <brillo/key_value_store.h> 32 33 #include "update_engine/common/fake_boot_control.h" 34 #include "update_engine/common/fake_hardware.h" 35 #include "update_engine/common/prefs.h" 36 #include "update_engine/common/terminator.h" 37 #include "update_engine/common/utils.h" 38 #include "update_engine/payload_consumer/delta_performer.h" 39 #include "update_engine/payload_consumer/payload_constants.h" 40 #include "update_engine/payload_generator/delta_diff_generator.h" 41 #include "update_engine/payload_generator/payload_generation_config.h" 42 #include "update_engine/payload_generator/payload_signer.h" 43 #include "update_engine/payload_generator/xz.h" 44 #include "update_engine/update_metadata.pb.h" 45 46 // This file contains a simple program that takes an old path, a new path, 47 // and an output file as arguments and the path to an output file and 48 // generates a delta that can be sent to Chrome OS clients. 49 50 using std::string; 51 using std::vector; 52 53 namespace chromeos_update_engine { 54 55 namespace { 56 57 void ParseSignatureSizes(const string& signature_sizes_flag, 58 vector<int>* signature_sizes) { 59 signature_sizes->clear(); 60 vector<string> split_strings = 61 base::SplitString(signature_sizes_flag, ":", base::TRIM_WHITESPACE, 62 base::SPLIT_WANT_ALL); 63 for (const string& str : split_strings) { 64 int size = 0; 65 bool parsing_successful = base::StringToInt(str, &size); 66 LOG_IF(FATAL, !parsing_successful) 67 << "Invalid signature size: " << str; 68 69 LOG_IF(FATAL, size != (2048 / 8)) << 70 "Only signature sizes of 256 bytes are supported."; 71 72 signature_sizes->push_back(size); 73 } 74 } 75 76 bool ParseImageInfo(const string& channel, 77 const string& board, 78 const string& version, 79 const string& key, 80 const string& build_channel, 81 const string& build_version, 82 ImageInfo* image_info) { 83 // All of these arguments should be present or missing. 84 bool empty = channel.empty(); 85 86 CHECK_EQ(channel.empty(), empty); 87 CHECK_EQ(board.empty(), empty); 88 CHECK_EQ(version.empty(), empty); 89 CHECK_EQ(key.empty(), empty); 90 91 if (empty) 92 return false; 93 94 image_info->set_channel(channel); 95 image_info->set_board(board); 96 image_info->set_version(version); 97 image_info->set_key(key); 98 99 image_info->set_build_channel( 100 build_channel.empty() ? channel : build_channel); 101 102 image_info->set_build_version( 103 build_version.empty() ? version : build_version); 104 105 return true; 106 } 107 108 void CalculateHashForSigning(const vector<int> &sizes, 109 const string& out_hash_file, 110 const string& out_metadata_hash_file, 111 const string& in_file) { 112 LOG(INFO) << "Calculating hash for signing."; 113 LOG_IF(FATAL, in_file.empty()) 114 << "Must pass --in_file to calculate hash for signing."; 115 LOG_IF(FATAL, out_hash_file.empty()) 116 << "Must pass --out_hash_file to calculate hash for signing."; 117 118 brillo::Blob payload_hash, metadata_hash; 119 CHECK(PayloadSigner::HashPayloadForSigning(in_file, sizes, &payload_hash, 120 &metadata_hash)); 121 CHECK(utils::WriteFile(out_hash_file.c_str(), payload_hash.data(), 122 payload_hash.size())); 123 if (!out_metadata_hash_file.empty()) 124 CHECK(utils::WriteFile(out_metadata_hash_file.c_str(), metadata_hash.data(), 125 metadata_hash.size())); 126 127 LOG(INFO) << "Done calculating hash for signing."; 128 } 129 130 void SignatureFileFlagToBlobs(const string& signature_file_flag, 131 vector<brillo::Blob>* signatures) { 132 vector<string> signature_files = 133 base::SplitString(signature_file_flag, ":", base::TRIM_WHITESPACE, 134 base::SPLIT_WANT_ALL); 135 for (const string& signature_file : signature_files) { 136 brillo::Blob signature; 137 CHECK(utils::ReadFile(signature_file, &signature)); 138 signatures->push_back(signature); 139 } 140 } 141 142 void SignPayload(const string& in_file, 143 const string& out_file, 144 const string& payload_signature_file, 145 const string& metadata_signature_file, 146 const string& out_metadata_size_file) { 147 LOG(INFO) << "Signing payload."; 148 LOG_IF(FATAL, in_file.empty()) 149 << "Must pass --in_file to sign payload."; 150 LOG_IF(FATAL, out_file.empty()) 151 << "Must pass --out_file to sign payload."; 152 LOG_IF(FATAL, payload_signature_file.empty()) 153 << "Must pass --signature_file to sign payload."; 154 vector<brillo::Blob> signatures, metadata_signatures; 155 SignatureFileFlagToBlobs(payload_signature_file, &signatures); 156 SignatureFileFlagToBlobs(metadata_signature_file, &metadata_signatures); 157 uint64_t final_metadata_size; 158 CHECK(PayloadSigner::AddSignatureToPayload(in_file, signatures, 159 metadata_signatures, out_file, &final_metadata_size)); 160 LOG(INFO) << "Done signing payload. Final metadata size = " 161 << final_metadata_size; 162 if (!out_metadata_size_file.empty()) { 163 string metadata_size_string = std::to_string(final_metadata_size); 164 CHECK(utils::WriteFile(out_metadata_size_file.c_str(), 165 metadata_size_string.data(), 166 metadata_size_string.size())); 167 } 168 } 169 170 int VerifySignedPayload(const string& in_file, const string& public_key) { 171 LOG(INFO) << "Verifying signed payload."; 172 LOG_IF(FATAL, in_file.empty()) 173 << "Must pass --in_file to verify signed payload."; 174 LOG_IF(FATAL, public_key.empty()) 175 << "Must pass --public_key to verify signed payload."; 176 if (!PayloadSigner::VerifySignedPayload(in_file, public_key)) { 177 LOG(INFO) << "VerifySignedPayload failed"; 178 return 1; 179 } 180 181 LOG(INFO) << "Done verifying signed payload."; 182 return 0; 183 } 184 185 // TODO(deymo): This function is likely broken for deltas minor version 2 or 186 // newer. Move this function to a new file and make the delta_performer 187 // integration tests use this instead. 188 bool ApplyPayload(const string& payload_file, 189 // Simply reuses the payload config used for payload 190 // generation. 191 const PayloadGenerationConfig& config) { 192 LOG(INFO) << "Applying delta."; 193 FakeBootControl fake_boot_control; 194 FakeHardware fake_hardware; 195 MemoryPrefs prefs; 196 InstallPlan install_plan; 197 InstallPlan::Payload payload; 198 install_plan.source_slot = 199 config.is_delta ? 0 : BootControlInterface::kInvalidSlot; 200 install_plan.target_slot = 1; 201 payload.type = 202 config.is_delta ? InstallPayloadType::kDelta : InstallPayloadType::kFull; 203 204 for (size_t i = 0; i < config.target.partitions.size(); i++) { 205 const string& part_name = config.target.partitions[i].name; 206 const string& target_path = config.target.partitions[i].path; 207 fake_boot_control.SetPartitionDevice( 208 part_name, install_plan.target_slot, target_path); 209 210 string source_path; 211 if (config.is_delta) { 212 TEST_AND_RETURN_FALSE(config.target.partitions.size() == 213 config.source.partitions.size()); 214 source_path = config.source.partitions[i].path; 215 fake_boot_control.SetPartitionDevice( 216 part_name, install_plan.source_slot, source_path); 217 } 218 219 LOG(INFO) << "Install partition:" 220 << " source: " << source_path << " target: " << target_path; 221 } 222 223 DeltaPerformer performer(&prefs, 224 &fake_boot_control, 225 &fake_hardware, 226 nullptr, 227 &install_plan, 228 &payload, 229 true); // is_interactive 230 231 brillo::Blob buf(1024 * 1024); 232 int fd = open(payload_file.c_str(), O_RDONLY, 0); 233 CHECK_GE(fd, 0); 234 ScopedFdCloser fd_closer(&fd); 235 xz_crc32_init(); 236 for (off_t offset = 0;; offset += buf.size()) { 237 ssize_t bytes_read; 238 CHECK(utils::PReadAll(fd, buf.data(), buf.size(), offset, &bytes_read)); 239 if (bytes_read == 0) 240 break; 241 TEST_AND_RETURN_FALSE(performer.Write(buf.data(), bytes_read)); 242 } 243 CHECK_EQ(performer.Close(), 0); 244 DeltaPerformer::ResetUpdateProgress(&prefs, false); 245 LOG(INFO) << "Completed applying " << (config.is_delta ? "delta" : "full") 246 << " payload."; 247 return true; 248 } 249 250 int ExtractProperties(const string& payload_path, const string& props_file) { 251 brillo::KeyValueStore properties; 252 TEST_AND_RETURN_FALSE( 253 PayloadSigner::ExtractPayloadProperties(payload_path, &properties)); 254 if (props_file == "-") { 255 printf("%s", properties.SaveToString().c_str()); 256 } else { 257 properties.Save(base::FilePath(props_file)); 258 LOG(INFO) << "Generated properties file at " << props_file; 259 } 260 return true; 261 } 262 263 int Main(int argc, char** argv) { 264 DEFINE_string(old_image, "", "Path to the old rootfs"); 265 DEFINE_string(new_image, "", "Path to the new rootfs"); 266 DEFINE_string(old_kernel, "", "Path to the old kernel partition image"); 267 DEFINE_string(new_kernel, "", "Path to the new kernel partition image"); 268 DEFINE_string(old_partitions, "", 269 "Path to the old partitions. To pass multiple partitions, use " 270 "a single argument with a colon between paths, e.g. " 271 "/path/to/part:/path/to/part2::/path/to/last_part . Path can " 272 "be empty, but it has to match the order of partition_names."); 273 DEFINE_string(new_partitions, "", 274 "Path to the new partitions. To pass multiple partitions, use " 275 "a single argument with a colon between paths, e.g. " 276 "/path/to/part:/path/to/part2:/path/to/last_part . Path has " 277 "to match the order of partition_names."); 278 DEFINE_string(old_mapfiles, 279 "", 280 "Path to the .map files associated with the partition files " 281 "in the old partition. The .map file is normally generated " 282 "when creating the image in Android builds. Only recommended " 283 "for unsupported filesystem. Pass multiple files separated by " 284 "a colon as with -old_partitions."); 285 DEFINE_string(new_mapfiles, 286 "", 287 "Path to the .map files associated with the partition files " 288 "in the new partition, similar to the -old_mapfiles flag."); 289 DEFINE_string(partition_names, 290 string(kLegacyPartitionNameRoot) + ":" + 291 kLegacyPartitionNameKernel, 292 "Names of the partitions. To pass multiple names, use a single " 293 "argument with a colon between names, e.g. " 294 "name:name2:name3:last_name . Name can not be empty, and it " 295 "has to match the order of partitions."); 296 DEFINE_string(in_file, "", 297 "Path to input delta payload file used to hash/sign payloads " 298 "and apply delta over old_image (for debugging)"); 299 DEFINE_string(out_file, "", "Path to output delta payload file"); 300 DEFINE_string(out_hash_file, "", "Path to output hash file"); 301 DEFINE_string(out_metadata_hash_file, "", 302 "Path to output metadata hash file"); 303 DEFINE_string(out_metadata_size_file, "", 304 "Path to output metadata size file"); 305 DEFINE_string(private_key, "", "Path to private key in .pem format"); 306 DEFINE_string(public_key, "", "Path to public key in .pem format"); 307 DEFINE_int32(public_key_version, -1, 308 "DEPRECATED. Key-check version # of client"); 309 DEFINE_string(signature_size, "", 310 "Raw signature size used for hash calculation. " 311 "You may pass in multiple sizes by colon separating them. E.g. " 312 "2048:2048:4096 will assume 3 signatures, the first two with " 313 "2048 size and the last 4096."); 314 DEFINE_string(signature_file, "", 315 "Raw signature file to sign payload with. To pass multiple " 316 "signatures, use a single argument with a colon between paths, " 317 "e.g. /path/to/sig:/path/to/next:/path/to/last_sig . Each " 318 "signature will be assigned a client version, starting from " 319 "kSignatureOriginalVersion."); 320 DEFINE_string(metadata_signature_file, "", 321 "Raw signature file with the signature of the metadata hash. " 322 "To pass multiple signatures, use a single argument with a " 323 "colon between paths, " 324 "e.g. /path/to/sig:/path/to/next:/path/to/last_sig ."); 325 DEFINE_int32(chunk_size, 200 * 1024 * 1024, 326 "Payload chunk size (-1 for whole files)"); 327 DEFINE_uint64(rootfs_partition_size, 328 chromeos_update_engine::kRootFSPartitionSize, 329 "RootFS partition size for the image once installed"); 330 DEFINE_uint64(major_version, 1, 331 "The major version of the payload being generated."); 332 DEFINE_int32(minor_version, -1, 333 "The minor version of the payload being generated " 334 "(-1 means autodetect)."); 335 DEFINE_string(properties_file, "", 336 "If passed, dumps the payload properties of the payload passed " 337 "in --in_file and exits."); 338 DEFINE_int64(max_timestamp, 339 0, 340 "The maximum timestamp of the OS allowed to apply this " 341 "payload."); 342 343 DEFINE_string(old_channel, "", 344 "The channel for the old image. 'dev-channel', 'npo-channel', " 345 "etc. Ignored, except during delta generation."); 346 DEFINE_string(old_board, "", 347 "The board for the old image. 'x86-mario', 'lumpy', " 348 "etc. Ignored, except during delta generation."); 349 DEFINE_string(old_version, "", 350 "The build version of the old image. 1.2.3, etc."); 351 DEFINE_string(old_key, "", 352 "The key used to sign the old image. 'premp', 'mp', 'mp-v3'," 353 " etc"); 354 DEFINE_string(old_build_channel, "", 355 "The channel for the build of the old image. 'dev-channel', " 356 "etc, but will never contain special channels such as " 357 "'npo-channel'. Ignored, except during delta generation."); 358 DEFINE_string(old_build_version, "", 359 "The version of the build containing the old image."); 360 361 DEFINE_string(new_channel, "", 362 "The channel for the new image. 'dev-channel', 'npo-channel', " 363 "etc. Ignored, except during delta generation."); 364 DEFINE_string(new_board, "", 365 "The board for the new image. 'x86-mario', 'lumpy', " 366 "etc. Ignored, except during delta generation."); 367 DEFINE_string(new_version, "", 368 "The build version of the new image. 1.2.3, etc."); 369 DEFINE_string(new_key, "", 370 "The key used to sign the new image. 'premp', 'mp', 'mp-v3'," 371 " etc"); 372 DEFINE_string(new_build_channel, "", 373 "The channel for the build of the new image. 'dev-channel', " 374 "etc, but will never contain special channels such as " 375 "'npo-channel'. Ignored, except during delta generation."); 376 DEFINE_string(new_build_version, "", 377 "The version of the build containing the new image."); 378 DEFINE_string(new_postinstall_config_file, "", 379 "A config file specifying postinstall related metadata. " 380 "Only allowed in major version 2 or newer."); 381 382 brillo::FlagHelper::Init(argc, argv, 383 "Generates a payload to provide to ChromeOS' update_engine.\n\n" 384 "This tool can create full payloads and also delta payloads if the src\n" 385 "image is provided. It also provides debugging options to apply, sign\n" 386 "and verify payloads."); 387 Terminator::Init(); 388 389 logging::LoggingSettings log_settings; 390 log_settings.log_file = "delta_generator.log"; 391 log_settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG; 392 log_settings.lock_log = logging::LOCK_LOG_FILE; 393 log_settings.delete_old = logging::APPEND_TO_OLD_LOG_FILE; 394 395 logging::InitLogging(log_settings); 396 397 // Initialize the Xz compressor. 398 XzCompressInit(); 399 400 vector<int> signature_sizes; 401 ParseSignatureSizes(FLAGS_signature_size, &signature_sizes); 402 403 if (!FLAGS_out_hash_file.empty() || !FLAGS_out_metadata_hash_file.empty()) { 404 CHECK(FLAGS_out_metadata_size_file.empty()); 405 CalculateHashForSigning(signature_sizes, FLAGS_out_hash_file, 406 FLAGS_out_metadata_hash_file, FLAGS_in_file); 407 return 0; 408 } 409 if (!FLAGS_signature_file.empty()) { 410 SignPayload(FLAGS_in_file, FLAGS_out_file, FLAGS_signature_file, 411 FLAGS_metadata_signature_file, FLAGS_out_metadata_size_file); 412 return 0; 413 } 414 if (!FLAGS_public_key.empty()) { 415 LOG_IF(WARNING, FLAGS_public_key_version != -1) 416 << "--public_key_version is deprecated and ignored."; 417 return VerifySignedPayload(FLAGS_in_file, FLAGS_public_key); 418 } 419 if (!FLAGS_properties_file.empty()) { 420 return ExtractProperties(FLAGS_in_file, FLAGS_properties_file) ? 0 : 1; 421 } 422 423 // A payload generation was requested. Convert the flags to a 424 // PayloadGenerationConfig. 425 PayloadGenerationConfig payload_config; 426 vector<string> partition_names, old_partitions, new_partitions; 427 vector<string> old_mapfiles, new_mapfiles; 428 429 if (!FLAGS_old_mapfiles.empty()) { 430 old_mapfiles = base::SplitString( 431 FLAGS_old_mapfiles, ":", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); 432 } 433 if (!FLAGS_new_mapfiles.empty()) { 434 new_mapfiles = base::SplitString( 435 FLAGS_new_mapfiles, ":", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); 436 } 437 438 partition_names = 439 base::SplitString(FLAGS_partition_names, ":", base::TRIM_WHITESPACE, 440 base::SPLIT_WANT_ALL); 441 CHECK(!partition_names.empty()); 442 if (FLAGS_major_version == kChromeOSMajorPayloadVersion || 443 FLAGS_new_partitions.empty()) { 444 LOG_IF(FATAL, partition_names.size() != 2) 445 << "To support more than 2 partitions, please use the " 446 << "--new_partitions flag and major version 2."; 447 LOG_IF(FATAL, partition_names[0] != kLegacyPartitionNameRoot || 448 partition_names[1] != kLegacyPartitionNameKernel) 449 << "To support non-default partition name, please use the " 450 << "--new_partitions flag and major version 2."; 451 } 452 453 if (!FLAGS_new_partitions.empty()) { 454 LOG_IF(FATAL, !FLAGS_new_image.empty() || !FLAGS_new_kernel.empty()) 455 << "--new_image and --new_kernel are deprecated, please use " 456 << "--new_partitions for all partitions."; 457 new_partitions = 458 base::SplitString(FLAGS_new_partitions, ":", base::TRIM_WHITESPACE, 459 base::SPLIT_WANT_ALL); 460 CHECK(partition_names.size() == new_partitions.size()); 461 462 payload_config.is_delta = !FLAGS_old_partitions.empty(); 463 LOG_IF(FATAL, !FLAGS_old_image.empty() || !FLAGS_old_kernel.empty()) 464 << "--old_image and --old_kernel are deprecated, please use " 465 << "--old_partitions if you are using --new_partitions."; 466 } else { 467 new_partitions = {FLAGS_new_image, FLAGS_new_kernel}; 468 LOG(WARNING) << "--new_partitions is empty, using deprecated --new_image " 469 << "and --new_kernel flags."; 470 471 payload_config.is_delta = !FLAGS_old_image.empty() || 472 !FLAGS_old_kernel.empty(); 473 LOG_IF(FATAL, !FLAGS_old_partitions.empty()) 474 << "Please use --new_partitions if you are using --old_partitions."; 475 } 476 for (size_t i = 0; i < partition_names.size(); i++) { 477 LOG_IF(FATAL, partition_names[i].empty()) 478 << "Partition name can't be empty, see --partition_names."; 479 payload_config.target.partitions.emplace_back(partition_names[i]); 480 payload_config.target.partitions.back().path = new_partitions[i]; 481 if (i < new_mapfiles.size()) 482 payload_config.target.partitions.back().mapfile_path = new_mapfiles[i]; 483 } 484 485 if (payload_config.is_delta) { 486 if (!FLAGS_old_partitions.empty()) { 487 old_partitions = 488 base::SplitString(FLAGS_old_partitions, ":", base::TRIM_WHITESPACE, 489 base::SPLIT_WANT_ALL); 490 CHECK(old_partitions.size() == new_partitions.size()); 491 } else { 492 old_partitions = {FLAGS_old_image, FLAGS_old_kernel}; 493 LOG(WARNING) << "--old_partitions is empty, using deprecated --old_image " 494 << "and --old_kernel flags."; 495 } 496 for (size_t i = 0; i < partition_names.size(); i++) { 497 payload_config.source.partitions.emplace_back(partition_names[i]); 498 payload_config.source.partitions.back().path = old_partitions[i]; 499 if (i < old_mapfiles.size()) 500 payload_config.source.partitions.back().mapfile_path = old_mapfiles[i]; 501 } 502 } 503 504 if (!FLAGS_in_file.empty()) { 505 return ApplyPayload(FLAGS_in_file, payload_config) ? 0 : 1; 506 } 507 508 if (!FLAGS_new_postinstall_config_file.empty()) { 509 LOG_IF(FATAL, FLAGS_major_version == kChromeOSMajorPayloadVersion) 510 << "Postinstall config is only allowed in major version 2 or newer."; 511 brillo::KeyValueStore store; 512 CHECK(store.Load(base::FilePath(FLAGS_new_postinstall_config_file))); 513 CHECK(payload_config.target.LoadPostInstallConfig(store)); 514 } 515 516 // Use the default soft_chunk_size defined in the config. 517 payload_config.hard_chunk_size = FLAGS_chunk_size; 518 payload_config.block_size = kBlockSize; 519 520 // The partition size is never passed to the delta_generator, so we 521 // need to detect those from the provided files. 522 if (payload_config.is_delta) { 523 CHECK(payload_config.source.LoadImageSize()); 524 } 525 CHECK(payload_config.target.LoadImageSize()); 526 527 CHECK(!FLAGS_out_file.empty()); 528 529 // Ignore failures. These are optional arguments. 530 ParseImageInfo(FLAGS_new_channel, 531 FLAGS_new_board, 532 FLAGS_new_version, 533 FLAGS_new_key, 534 FLAGS_new_build_channel, 535 FLAGS_new_build_version, 536 &payload_config.target.image_info); 537 538 // Ignore failures. These are optional arguments. 539 ParseImageInfo(FLAGS_old_channel, 540 FLAGS_old_board, 541 FLAGS_old_version, 542 FLAGS_old_key, 543 FLAGS_old_build_channel, 544 FLAGS_old_build_version, 545 &payload_config.source.image_info); 546 547 payload_config.rootfs_partition_size = FLAGS_rootfs_partition_size; 548 549 if (payload_config.is_delta) { 550 // Avoid opening the filesystem interface for full payloads. 551 for (PartitionConfig& part : payload_config.target.partitions) 552 CHECK(part.OpenFilesystem()); 553 for (PartitionConfig& part : payload_config.source.partitions) 554 CHECK(part.OpenFilesystem()); 555 } 556 557 payload_config.version.major = FLAGS_major_version; 558 LOG(INFO) << "Using provided major_version=" << FLAGS_major_version; 559 560 if (FLAGS_minor_version == -1) { 561 // Autodetect minor_version by looking at the update_engine.conf in the old 562 // image. 563 if (payload_config.is_delta) { 564 payload_config.version.minor = kInPlaceMinorPayloadVersion; 565 brillo::KeyValueStore store; 566 uint32_t minor_version; 567 for (const PartitionConfig& part : payload_config.source.partitions) { 568 if (part.fs_interface && part.fs_interface->LoadSettings(&store) && 569 utils::GetMinorVersion(store, &minor_version)) { 570 payload_config.version.minor = minor_version; 571 break; 572 } 573 } 574 } else { 575 payload_config.version.minor = kFullPayloadMinorVersion; 576 } 577 LOG(INFO) << "Auto-detected minor_version=" << payload_config.version.minor; 578 } else { 579 payload_config.version.minor = FLAGS_minor_version; 580 LOG(INFO) << "Using provided minor_version=" << FLAGS_minor_version; 581 } 582 583 payload_config.max_timestamp = FLAGS_max_timestamp; 584 585 LOG(INFO) << "Generating " << (payload_config.is_delta ? "delta" : "full") 586 << " update"; 587 588 // From this point, all the options have been parsed. 589 if (!payload_config.Validate()) { 590 LOG(ERROR) << "Invalid options passed. See errors above."; 591 return 1; 592 } 593 594 uint64_t metadata_size; 595 if (!GenerateUpdatePayloadFile(payload_config, 596 FLAGS_out_file, 597 FLAGS_private_key, 598 &metadata_size)) { 599 return 1; 600 } 601 if (!FLAGS_out_metadata_size_file.empty()) { 602 string metadata_size_string = std::to_string(metadata_size); 603 CHECK(utils::WriteFile(FLAGS_out_metadata_size_file.c_str(), 604 metadata_size_string.data(), 605 metadata_size_string.size())); 606 } 607 return 0; 608 } 609 610 } // namespace 611 612 } // namespace chromeos_update_engine 613 614 int main(int argc, char** argv) { 615 return chromeos_update_engine::Main(argc, argv); 616 } 617
