1 /* 2 * Copyright (C) 2017 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 <openssl/sha.h> 18 #include <dirent.h> 19 #include <sys/types.h> 20 21 #include <string> 22 #include <vector> 23 24 #include "android-base/stringprintf.h" 25 #include "android-base/strings.h" 26 27 #include "base/leb128.h" 28 #include "dexopt_test.h" 29 #include "runtime.h" 30 31 #include <gtest/gtest.h> 32 33 namespace art { 34 35 using android::base::StringPrintf; 36 37 class PatchoatTest : public DexoptTest { 38 public: 39 static bool ListDirFilesEndingWith( 40 const std::string& dir, 41 const std::string& suffix, 42 std::vector<std::string>* filenames, 43 std::string* error_msg) { 44 DIR* d = opendir(dir.c_str()); 45 if (d == nullptr) { 46 *error_msg = "Failed to open directory"; 47 return false; 48 } 49 dirent* e; 50 struct stat s; 51 size_t suffix_len = suffix.size(); 52 while ((e = readdir(d)) != nullptr) { 53 if ((strcmp(e->d_name, ".") == 0) || (strcmp(e->d_name, "..") == 0)) { 54 continue; 55 } 56 size_t name_len = strlen(e->d_name); 57 if ((name_len < suffix_len) || (strcmp(&e->d_name[name_len - suffix_len], suffix.c_str()))) { 58 continue; 59 } 60 std::string basename(e->d_name); 61 std::string filename = dir + "/" + basename; 62 int stat_result = lstat(filename.c_str(), &s); 63 if (stat_result != 0) { 64 *error_msg = 65 StringPrintf("Failed to stat %s: stat returned %d", filename.c_str(), stat_result); 66 return false; 67 } 68 if (S_ISDIR(s.st_mode)) { 69 continue; 70 } 71 filenames->push_back(basename); 72 } 73 closedir(d); 74 return true; 75 } 76 77 static void AddRuntimeArg(std::vector<std::string>& args, const std::string& arg) { 78 args.push_back("--runtime-arg"); 79 args.push_back(arg); 80 } 81 82 bool CompileBootImage(const std::vector<std::string>& extra_args, 83 const std::string& image_file_name_prefix, 84 uint32_t base_addr, 85 std::string* error_msg) { 86 Runtime* const runtime = Runtime::Current(); 87 std::vector<std::string> argv; 88 argv.push_back(runtime->GetCompilerExecutable()); 89 AddRuntimeArg(argv, "-Xms64m"); 90 AddRuntimeArg(argv, "-Xmx64m"); 91 std::vector<std::string> dex_files = GetLibCoreDexFileNames(); 92 for (const std::string& dex_file : dex_files) { 93 argv.push_back("--dex-file=" + dex_file); 94 argv.push_back("--dex-location=" + dex_file); 95 } 96 if (runtime->IsJavaDebuggable()) { 97 argv.push_back("--debuggable"); 98 } 99 runtime->AddCurrentRuntimeFeaturesAsDex2OatArguments(&argv); 100 101 AddRuntimeArg(argv, "-Xverify:softfail"); 102 103 if (!kIsTargetBuild) { 104 argv.push_back("--host"); 105 } 106 107 argv.push_back("--image=" + image_file_name_prefix + ".art"); 108 argv.push_back("--oat-file=" + image_file_name_prefix + ".oat"); 109 argv.push_back("--oat-location=" + image_file_name_prefix + ".oat"); 110 argv.push_back(StringPrintf("--base=0x%" PRIx32, base_addr)); 111 argv.push_back("--compile-pic"); 112 argv.push_back("--multi-image"); 113 argv.push_back("--no-generate-debug-info"); 114 115 std::vector<std::string> compiler_options = runtime->GetCompilerOptions(); 116 argv.insert(argv.end(), compiler_options.begin(), compiler_options.end()); 117 118 // We must set --android-root. 119 const char* android_root = getenv("ANDROID_ROOT"); 120 CHECK(android_root != nullptr); 121 argv.push_back("--android-root=" + std::string(android_root)); 122 argv.insert(argv.end(), extra_args.begin(), extra_args.end()); 123 124 return RunDex2OatOrPatchoat(argv, error_msg); 125 } 126 127 static std::vector<std::string> BasePatchoatCommand(const std::string& input_image_location, 128 off_t base_offset_delta) { 129 Runtime* const runtime = Runtime::Current(); 130 std::vector<std::string> argv; 131 argv.push_back(runtime->GetPatchoatExecutable()); 132 argv.push_back("--input-image-location=" + input_image_location); 133 argv.push_back(StringPrintf("--base-offset-delta=0x%jx", (intmax_t) base_offset_delta)); 134 argv.push_back(StringPrintf("--instruction-set=%s", GetInstructionSetString(kRuntimeISA))); 135 136 return argv; 137 } 138 139 bool RelocateBootImage(const std::string& input_image_location, 140 const std::string& output_image_directory, 141 off_t base_offset_delta, 142 std::string* error_msg) { 143 std::vector<std::string> argv = BasePatchoatCommand(input_image_location, base_offset_delta); 144 argv.push_back("--output-image-directory=" + output_image_directory); 145 146 return RunDex2OatOrPatchoat(argv, error_msg); 147 } 148 149 bool VerifyBootImage(const std::string& input_image_location, 150 const std::string& output_image_directory, 151 off_t base_offset_delta, 152 std::string* error_msg) { 153 std::vector<std::string> argv = BasePatchoatCommand(input_image_location, base_offset_delta); 154 argv.push_back("--output-image-directory=" + output_image_directory); 155 argv.push_back("--verify"); 156 157 return RunDex2OatOrPatchoat(argv, error_msg); 158 } 159 160 bool GenerateBootImageRelFile(const std::string& input_image_location, 161 const std::string& output_rel_directory, 162 off_t base_offset_delta, 163 std::string* error_msg) { 164 std::vector<std::string> argv = BasePatchoatCommand(input_image_location, base_offset_delta); 165 argv.push_back("--output-image-relocation-directory=" + output_rel_directory); 166 167 return RunDex2OatOrPatchoat(argv, error_msg); 168 } 169 170 bool RunDex2OatOrPatchoat(const std::vector<std::string>& args, std::string* error_msg) { 171 int link[2]; 172 173 if (pipe(link) == -1) { 174 return false; 175 } 176 177 pid_t pid = fork(); 178 if (pid == -1) { 179 return false; 180 } 181 182 if (pid == 0) { 183 // We need dex2oat to actually log things. 184 setenv("ANDROID_LOG_TAGS", "*:e", 1); 185 dup2(link[1], STDERR_FILENO); 186 close(link[0]); 187 close(link[1]); 188 std::vector<const char*> c_args; 189 for (const std::string& str : args) { 190 c_args.push_back(str.c_str()); 191 } 192 c_args.push_back(nullptr); 193 execv(c_args[0], const_cast<char* const*>(c_args.data())); 194 exit(1); 195 UNREACHABLE(); 196 } else { 197 close(link[1]); 198 char buffer[128]; 199 memset(buffer, 0, 128); 200 ssize_t bytes_read = 0; 201 202 while (TEMP_FAILURE_RETRY(bytes_read = read(link[0], buffer, 128)) > 0) { 203 *error_msg += std::string(buffer, bytes_read); 204 } 205 close(link[0]); 206 int status = -1; 207 if (waitpid(pid, &status, 0) != -1) { 208 return (status == 0); 209 } 210 return false; 211 } 212 } 213 214 bool CompileBootImageToDir( 215 const std::string& output_dir, 216 const std::vector<std::string>& dex2oat_extra_args, 217 uint32_t base_addr, 218 std::string* error_msg) { 219 return CompileBootImage(dex2oat_extra_args, output_dir + "/boot", base_addr, error_msg); 220 } 221 222 bool CopyImageChecksumAndSetPatchDelta( 223 const std::string& src_image_filename, 224 const std::string& dest_image_filename, 225 off_t dest_patch_delta, 226 std::string* error_msg) { 227 std::unique_ptr<File> src_file(OS::OpenFileForReading(src_image_filename.c_str())); 228 if (src_file.get() == nullptr) { 229 *error_msg = StringPrintf("Failed to open source image file %s", src_image_filename.c_str()); 230 return false; 231 } 232 ImageHeader src_header; 233 if (!src_file->ReadFully(&src_header, sizeof(src_header))) { 234 *error_msg = StringPrintf("Failed to read source image file %s", src_image_filename.c_str()); 235 return false; 236 } 237 238 std::unique_ptr<File> dest_file(OS::OpenFileReadWrite(dest_image_filename.c_str())); 239 if (dest_file.get() == nullptr) { 240 *error_msg = 241 StringPrintf("Failed to open destination image file %s", dest_image_filename.c_str()); 242 return false; 243 } 244 ImageHeader dest_header; 245 if (!dest_file->ReadFully(&dest_header, sizeof(dest_header))) { 246 *error_msg = 247 StringPrintf("Failed to read destination image file %s", dest_image_filename.c_str()); 248 return false; 249 } 250 dest_header.SetOatChecksum(src_header.GetOatChecksum()); 251 dest_header.SetPatchDelta(dest_patch_delta); 252 if (!dest_file->ResetOffset()) { 253 *error_msg = 254 StringPrintf( 255 "Failed to seek to start of destination image file %s", dest_image_filename.c_str()); 256 return false; 257 } 258 if (!dest_file->WriteFully(&dest_header, sizeof(dest_header))) { 259 *error_msg = 260 StringPrintf("Failed to write to destination image file %s", dest_image_filename.c_str()); 261 dest_file->Erase(); 262 return false; 263 } 264 if (dest_file->FlushCloseOrErase() != 0) { 265 *error_msg = 266 StringPrintf( 267 "Failed to flush/close destination image file %s", dest_image_filename.c_str()); 268 return false; 269 } 270 271 return true; 272 } 273 274 bool ReadFully( 275 const std::string& filename, std::vector<uint8_t>* contents, std::string* error_msg) { 276 std::unique_ptr<File> file(OS::OpenFileForReading(filename.c_str())); 277 if (file.get() == nullptr) { 278 *error_msg = "Failed to open"; 279 return false; 280 } 281 int64_t size = file->GetLength(); 282 if (size < 0) { 283 *error_msg = "Failed to get size"; 284 return false; 285 } 286 contents->resize(size); 287 if (!file->ReadFully(&(*contents)[0], size)) { 288 *error_msg = "Failed to read"; 289 contents->clear(); 290 return false; 291 } 292 return true; 293 } 294 295 bool BinaryDiff( 296 const std::string& filename1, const std::string& filename2, std::string* error_msg) { 297 std::string read_error_msg; 298 std::vector<uint8_t> image1; 299 if (!ReadFully(filename1, &image1, &read_error_msg)) { 300 *error_msg = StringPrintf("Failed to read %s: %s", filename1.c_str(), read_error_msg.c_str()); 301 return true; 302 } 303 std::vector<uint8_t> image2; 304 if (!ReadFully(filename2, &image2, &read_error_msg)) { 305 *error_msg = StringPrintf("Failed to read %s: %s", filename2.c_str(), read_error_msg.c_str()); 306 return true; 307 } 308 if (image1.size() != image1.size()) { 309 *error_msg = 310 StringPrintf( 311 "%s and %s are of different size: %zu vs %zu", 312 filename1.c_str(), 313 filename2.c_str(), 314 image1.size(), 315 image2.size()); 316 return true; 317 } 318 size_t size = image1.size(); 319 for (size_t i = 0; i < size; i++) { 320 if (image1[i] != image2[i]) { 321 *error_msg = 322 StringPrintf("%s and %s differ at offset %zu", filename1.c_str(), filename2.c_str(), i); 323 return true; 324 } 325 } 326 327 return false; 328 } 329 }; 330 331 TEST_F(PatchoatTest, PatchoatRelocationSameAsDex2oatRelocation) { 332 #if defined(ART_USE_READ_BARRIER) 333 // This test checks that relocating a boot image using patchoat produces the same result as 334 // producing the boot image for that relocated base address using dex2oat. To be precise, these 335 // two files will have two small differences: the OAT checksum and base address. However, this 336 // test takes this into account. 337 338 // Compile boot image into a random directory using dex2oat 339 ScratchFile dex2oat_orig_scratch; 340 dex2oat_orig_scratch.Unlink(); 341 std::string dex2oat_orig_dir = dex2oat_orig_scratch.GetFilename(); 342 ASSERT_EQ(0, mkdir(dex2oat_orig_dir.c_str(), 0700)); 343 const uint32_t orig_base_addr = 0x60000000; 344 // Force deterministic output. We want the boot images created by this dex2oat run and the run 345 // below to differ only in their base address. 346 std::vector<std::string> dex2oat_extra_args; 347 dex2oat_extra_args.push_back("--force-determinism"); 348 dex2oat_extra_args.push_back("-j1"); // Might not be needed. Causes a 3-5x slowdown. 349 std::string error_msg; 350 if (!CompileBootImageToDir(dex2oat_orig_dir, dex2oat_extra_args, orig_base_addr, &error_msg)) { 351 FAIL() << "CompileBootImage1 failed: " << error_msg; 352 } 353 354 // Compile a "relocated" boot image into a random directory using dex2oat. This image is relocated 355 // in the sense that it uses a different base address. 356 ScratchFile dex2oat_reloc_scratch; 357 dex2oat_reloc_scratch.Unlink(); 358 std::string dex2oat_reloc_dir = dex2oat_reloc_scratch.GetFilename(); 359 ASSERT_EQ(0, mkdir(dex2oat_reloc_dir.c_str(), 0700)); 360 const uint32_t reloc_base_addr = 0x70000000; 361 if (!CompileBootImageToDir(dex2oat_reloc_dir, dex2oat_extra_args, reloc_base_addr, &error_msg)) { 362 FAIL() << "CompileBootImage2 failed: " << error_msg; 363 } 364 const off_t base_addr_delta = reloc_base_addr - orig_base_addr; 365 366 // Relocate the original boot image using patchoat. The image is relocated by the same amount 367 // as the second/relocated image produced by dex2oat. 368 ScratchFile patchoat_scratch; 369 patchoat_scratch.Unlink(); 370 std::string patchoat_dir = patchoat_scratch.GetFilename(); 371 ASSERT_EQ(0, mkdir(patchoat_dir.c_str(), 0700)); 372 std::string dex2oat_orig_with_arch_dir = 373 dex2oat_orig_dir + "/" + GetInstructionSetString(kRuntimeISA); 374 // The arch-including symlink is needed by patchoat 375 ASSERT_EQ(0, symlink(dex2oat_orig_dir.c_str(), dex2oat_orig_with_arch_dir.c_str())); 376 if (!RelocateBootImage( 377 dex2oat_orig_dir + "/boot.art", 378 patchoat_dir, 379 base_addr_delta, 380 &error_msg)) { 381 FAIL() << "RelocateBootImage failed: " << error_msg; 382 } 383 384 // Assert that patchoat created the same set of .art files as dex2oat 385 std::vector<std::string> dex2oat_image_basenames; 386 std::vector<std::string> patchoat_image_basenames; 387 if (!ListDirFilesEndingWith(dex2oat_reloc_dir, ".art", &dex2oat_image_basenames, &error_msg)) { 388 FAIL() << "Failed to list *.art files in " << dex2oat_reloc_dir << ": " << error_msg; 389 } 390 if (!ListDirFilesEndingWith(patchoat_dir, ".art", &patchoat_image_basenames, &error_msg)) { 391 FAIL() << "Failed to list *.art files in " << patchoat_dir << ": " << error_msg; 392 } 393 std::sort(dex2oat_image_basenames.begin(), dex2oat_image_basenames.end()); 394 std::sort(patchoat_image_basenames.begin(), patchoat_image_basenames.end()); 395 // .art file names output by patchoat look like tmp@art-data-<random>-<random>@boot*.art. To 396 // compare these with .art file names output by dex2oat we retain only the part of the file name 397 // after the last @. 398 std::vector<std::string> patchoat_image_shortened_basenames(patchoat_image_basenames.size()); 399 for (size_t i = 0; i < patchoat_image_basenames.size(); i++) { 400 patchoat_image_shortened_basenames[i] = 401 patchoat_image_basenames[i].substr(patchoat_image_basenames[i].find_last_of("@") + 1); 402 } 403 ASSERT_EQ(dex2oat_image_basenames, patchoat_image_shortened_basenames); 404 405 // Patch up the dex2oat-relocated image files so that it looks as though they were relocated by 406 // patchoat. patchoat preserves the OAT checksum header field and sets patch delta header field. 407 for (const std::string& image_basename : dex2oat_image_basenames) { 408 if (!CopyImageChecksumAndSetPatchDelta( 409 dex2oat_orig_dir + "/" + image_basename, 410 dex2oat_reloc_dir + "/" + image_basename, 411 base_addr_delta, 412 &error_msg)) { 413 FAIL() << "Unable to patch up " << image_basename << ": " << error_msg; 414 } 415 } 416 417 // Assert that the patchoat-relocated images are identical to the dex2oat-relocated images 418 for (size_t i = 0; i < dex2oat_image_basenames.size(); i++) { 419 const std::string& dex2oat_image_basename = dex2oat_image_basenames[i]; 420 const std::string& dex2oat_image_filename = dex2oat_reloc_dir + "/" + dex2oat_image_basename; 421 const std::string& patchoat_image_filename = patchoat_dir + "/" + patchoat_image_basenames[i]; 422 if (BinaryDiff(dex2oat_image_filename, patchoat_image_filename, &error_msg)) { 423 FAIL() << "patchoat- and dex2oat-relocated variants of " << dex2oat_image_basename 424 << " differ: " << error_msg; 425 } 426 } 427 428 ClearDirectory(dex2oat_orig_dir.c_str(), /*recursive*/ true); 429 ClearDirectory(dex2oat_reloc_dir.c_str(), /*recursive*/ true); 430 ClearDirectory(patchoat_dir.c_str(), /*recursive*/ true); 431 rmdir(dex2oat_orig_dir.c_str()); 432 rmdir(dex2oat_reloc_dir.c_str()); 433 rmdir(patchoat_dir.c_str()); 434 #else 435 LOG(INFO) << "Skipping PatchoatRelocationSameAsDex2oatRelocation"; 436 // Force-print to std::cout so it's also outside the logcat. 437 std::cout << "Skipping PatchoatRelocationSameAsDex2oatRelocation" << std::endl; 438 #endif 439 } 440 441 // These tests check that a boot image relocated using patchoat can be unrelocated 442 // using the .rel file created by patchoat. 443 // 444 // The tests don't work when heap poisoning is enabled because some of the 445 // references are negated. b/72117833 is tracking the effort to have patchoat 446 // and its tests support heap poisoning. 447 class PatchoatVerificationTest : public PatchoatTest { 448 protected: 449 void CreateRelocatedBootImage() { 450 // Compile boot image into a random directory using dex2oat 451 ScratchFile dex2oat_orig_scratch; 452 dex2oat_orig_scratch.Unlink(); 453 dex2oat_orig_dir_ = dex2oat_orig_scratch.GetFilename(); 454 ASSERT_EQ(0, mkdir(dex2oat_orig_dir_.c_str(), 0700)); 455 const uint32_t orig_base_addr = 0x60000000; 456 std::vector<std::string> dex2oat_extra_args; 457 std::string error_msg; 458 if (!CompileBootImageToDir(dex2oat_orig_dir_, dex2oat_extra_args, orig_base_addr, &error_msg)) { 459 FAIL() << "CompileBootImage1 failed: " << error_msg; 460 } 461 462 // Generate image relocation file for the original boot image 463 std::string dex2oat_orig_with_arch_dir = 464 dex2oat_orig_dir_ + "/" + GetInstructionSetString(kRuntimeISA); 465 // The arch-including symlink is needed by patchoat 466 ASSERT_EQ(0, symlink(dex2oat_orig_dir_.c_str(), dex2oat_orig_with_arch_dir.c_str())); 467 base_addr_delta_ = 0x100000; 468 if (!GenerateBootImageRelFile( 469 dex2oat_orig_dir_ + "/boot.art", 470 dex2oat_orig_dir_, 471 base_addr_delta_, 472 &error_msg)) { 473 FAIL() << "RelocateBootImage failed: " << error_msg; 474 } 475 476 // Relocate the original boot image using patchoat 477 ScratchFile relocated_scratch; 478 relocated_scratch.Unlink(); 479 relocated_dir_ = relocated_scratch.GetFilename(); 480 ASSERT_EQ(0, mkdir(relocated_dir_.c_str(), 0700)); 481 // Use a different relocation delta from the one used when generating .rel files above. This is 482 // to make sure .rel files are not specific to a particular relocation delta. 483 base_addr_delta_ -= 0x10000; 484 if (!RelocateBootImage( 485 dex2oat_orig_dir_ + "/boot.art", 486 relocated_dir_, 487 base_addr_delta_, 488 &error_msg)) { 489 FAIL() << "RelocateBootImage failed: " << error_msg; 490 } 491 492 // Assert that patchoat created the same set of .art and .art.rel files 493 std::vector<std::string> rel_basenames; 494 std::vector<std::string> relocated_image_basenames; 495 if (!ListDirFilesEndingWith(dex2oat_orig_dir_, ".rel", &rel_basenames, &error_msg)) { 496 FAIL() << "Failed to list *.art.rel files in " << dex2oat_orig_dir_ << ": " << error_msg; 497 } 498 if (!ListDirFilesEndingWith(relocated_dir_, ".art", &relocated_image_basenames, &error_msg)) { 499 FAIL() << "Failed to list *.art files in " << relocated_dir_ << ": " << error_msg; 500 } 501 std::sort(rel_basenames.begin(), rel_basenames.end()); 502 std::sort(relocated_image_basenames.begin(), relocated_image_basenames.end()); 503 504 // .art and .art.rel file names output by patchoat look like 505 // tmp@art-data-<random>-<random>@boot*.art, encoding the name of the directory in their name. 506 // To compare these with each other, we retain only the part of the file name after the last @, 507 // and we also drop the extension. 508 std::vector<std::string> rel_shortened_basenames(rel_basenames.size()); 509 std::vector<std::string> relocated_image_shortened_basenames(relocated_image_basenames.size()); 510 for (size_t i = 0; i < rel_basenames.size(); i++) { 511 rel_shortened_basenames[i] = rel_basenames[i].substr(rel_basenames[i].find_last_of("@") + 1); 512 rel_shortened_basenames[i] = 513 rel_shortened_basenames[i].substr(0, rel_shortened_basenames[i].find(".")); 514 } 515 for (size_t i = 0; i < relocated_image_basenames.size(); i++) { 516 relocated_image_shortened_basenames[i] = 517 relocated_image_basenames[i].substr(relocated_image_basenames[i].find_last_of("@") + 1); 518 relocated_image_shortened_basenames[i] = 519 relocated_image_shortened_basenames[i].substr( 520 0, relocated_image_shortened_basenames[i].find(".")); 521 } 522 ASSERT_EQ(rel_shortened_basenames, relocated_image_shortened_basenames); 523 } 524 525 virtual void TearDown() { 526 if (!dex2oat_orig_dir_.empty()) { 527 ClearDirectory(dex2oat_orig_dir_.c_str(), /*recursive*/ true); 528 rmdir(dex2oat_orig_dir_.c_str()); 529 } 530 if (!relocated_dir_.empty()) { 531 ClearDirectory(relocated_dir_.c_str(), /*recursive*/ true); 532 rmdir(relocated_dir_.c_str()); 533 } 534 PatchoatTest::TearDown(); 535 } 536 537 std::string dex2oat_orig_dir_; 538 std::string relocated_dir_; 539 off_t base_addr_delta_; 540 }; 541 542 // Assert that verification works with the .rel files. 543 TEST_F(PatchoatVerificationTest, Sucessful) { 544 TEST_DISABLED_FOR_HEAP_POISONING(); 545 CreateRelocatedBootImage(); 546 547 std::string error_msg; 548 if (!VerifyBootImage( 549 dex2oat_orig_dir_ + "/boot.art", 550 relocated_dir_, 551 base_addr_delta_, 552 &error_msg)) { 553 FAIL() << "VerifyBootImage failed: " << error_msg; 554 } 555 } 556 557 // Corrupt the image file and check that the verification fails gracefully. 558 TEST_F(PatchoatVerificationTest, CorruptedImage) { 559 TEST_DISABLED_FOR_HEAP_POISONING(); 560 CreateRelocatedBootImage(); 561 562 std::string error_msg; 563 std::string relocated_image_filename; 564 if (!GetDalvikCacheFilename((dex2oat_orig_dir_ + "/boot.art").c_str(), 565 relocated_dir_.c_str(), 566 &relocated_image_filename, 567 &error_msg)) { 568 FAIL() << "Failed to find relocated image file name: " << error_msg; 569 } 570 ASSERT_EQ(truncate(relocated_image_filename.c_str(), sizeof(ImageHeader)), 0) 571 << relocated_image_filename; 572 573 if (VerifyBootImage( 574 dex2oat_orig_dir_ + "/boot.art", 575 relocated_dir_, 576 base_addr_delta_, 577 &error_msg)) { 578 FAIL() << "VerifyBootImage should have failed since the image was intentionally corrupted"; 579 } 580 } 581 582 // Corrupt the relocation file and check that the verification fails gracefully. 583 TEST_F(PatchoatVerificationTest, CorruptedRelFile) { 584 TEST_DISABLED_FOR_HEAP_POISONING(); 585 CreateRelocatedBootImage(); 586 587 std::string error_msg; 588 std::string art_filename = dex2oat_orig_dir_ + "/boot.art"; 589 std::string rel_filename = dex2oat_orig_dir_ + "/boot.art.rel"; 590 std::unique_ptr<File> art_file(OS::OpenFileForReading(art_filename.c_str())); 591 std::unique_ptr<File> rel_file(OS::OpenFileReadWrite(rel_filename.c_str())); 592 rel_file->ClearContent(); 593 uint8_t buffer[64] = {}; 594 ASSERT_TRUE(rel_file->WriteFully(&buffer, SHA256_DIGEST_LENGTH)); 595 // Encode single relocation which is just past the end of the image file. 596 size_t leb_size = EncodeUnsignedLeb128(buffer, art_file->GetLength()) - buffer; 597 ASSERT_TRUE(rel_file->WriteFully(&buffer, leb_size)); 598 ASSERT_EQ(rel_file->FlushClose(), 0); 599 ASSERT_EQ(art_file->Close(), 0); 600 601 if (VerifyBootImage( 602 dex2oat_orig_dir_ + "/boot.art", 603 relocated_dir_, 604 base_addr_delta_, 605 &error_msg)) { 606 FAIL() << "VerifyBootImage should have failed since the rel file was intentionally corrupted"; 607 } 608 } 609 610 } // namespace art 611
