1 //===- llvm/unittest/Support/Path.cpp - Path tests ------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/Support/Path.h" 10 #include "llvm/ADT/STLExtras.h" 11 #include "llvm/ADT/SmallVector.h" 12 #include "llvm/ADT/Triple.h" 13 #include "llvm/BinaryFormat/Magic.h" 14 #include "llvm/Config/llvm-config.h" 15 #include "llvm/Support/ConvertUTF.h" 16 #include "llvm/Support/Errc.h" 17 #include "llvm/Support/ErrorHandling.h" 18 #include "llvm/Support/FileSystem.h" 19 #include "llvm/Support/FileUtilities.h" 20 #include "llvm/Support/Host.h" 21 #include "llvm/Support/MemoryBuffer.h" 22 #include "llvm/Support/raw_ostream.h" 23 #include "gtest/gtest.h" 24 #include "gmock/gmock.h" 25 26 #ifdef _WIN32 27 #include "llvm/ADT/ArrayRef.h" 28 #include "llvm/Support/Chrono.h" 29 #include <windows.h> 30 #include <winerror.h> 31 #endif 32 33 #ifdef LLVM_ON_UNIX 34 #include <pwd.h> 35 #include <sys/stat.h> 36 #endif 37 38 using namespace llvm; 39 using namespace llvm::sys; 40 41 #define ASSERT_NO_ERROR(x) \ 42 if (std::error_code ASSERT_NO_ERROR_ec = x) { \ 43 SmallString<128> MessageStorage; \ 44 raw_svector_ostream Message(MessageStorage); \ 45 Message << #x ": did not return errc::success.\n" \ 46 << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \ 47 << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \ 48 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ 49 } else { \ 50 } 51 52 #define ASSERT_ERROR(x) \ 53 if (!x) { \ 54 SmallString<128> MessageStorage; \ 55 raw_svector_ostream Message(MessageStorage); \ 56 Message << #x ": did not return a failure error code.\n"; \ 57 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ 58 } 59 60 namespace { 61 62 struct FileDescriptorCloser { 63 explicit FileDescriptorCloser(int FD) : FD(FD) {} 64 ~FileDescriptorCloser() { ::close(FD); } 65 int FD; 66 }; 67 68 TEST(is_separator, Works) { 69 EXPECT_TRUE(path::is_separator('/')); 70 EXPECT_FALSE(path::is_separator('\0')); 71 EXPECT_FALSE(path::is_separator('-')); 72 EXPECT_FALSE(path::is_separator(' ')); 73 74 EXPECT_TRUE(path::is_separator('\\', path::Style::windows)); 75 EXPECT_FALSE(path::is_separator('\\', path::Style::posix)); 76 77 #ifdef _WIN32 78 EXPECT_TRUE(path::is_separator('\\')); 79 #else 80 EXPECT_FALSE(path::is_separator('\\')); 81 #endif 82 } 83 84 TEST(Support, Path) { 85 SmallVector<StringRef, 40> paths; 86 paths.push_back(""); 87 paths.push_back("."); 88 paths.push_back(".."); 89 paths.push_back("foo"); 90 paths.push_back("/"); 91 paths.push_back("/foo"); 92 paths.push_back("foo/"); 93 paths.push_back("/foo/"); 94 paths.push_back("foo/bar"); 95 paths.push_back("/foo/bar"); 96 paths.push_back("//net"); 97 paths.push_back("//net/"); 98 paths.push_back("//net/foo"); 99 paths.push_back("///foo///"); 100 paths.push_back("///foo///bar"); 101 paths.push_back("/."); 102 paths.push_back("./"); 103 paths.push_back("/.."); 104 paths.push_back("../"); 105 paths.push_back("foo/."); 106 paths.push_back("foo/.."); 107 paths.push_back("foo/./"); 108 paths.push_back("foo/./bar"); 109 paths.push_back("foo/.."); 110 paths.push_back("foo/../"); 111 paths.push_back("foo/../bar"); 112 paths.push_back("c:"); 113 paths.push_back("c:/"); 114 paths.push_back("c:foo"); 115 paths.push_back("c:/foo"); 116 paths.push_back("c:foo/"); 117 paths.push_back("c:/foo/"); 118 paths.push_back("c:/foo/bar"); 119 paths.push_back("prn:"); 120 paths.push_back("c:\\"); 121 paths.push_back("c:foo"); 122 paths.push_back("c:\\foo"); 123 paths.push_back("c:foo\\"); 124 paths.push_back("c:\\foo\\"); 125 paths.push_back("c:\\foo/"); 126 paths.push_back("c:/foo\\bar"); 127 128 for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(), 129 e = paths.end(); 130 i != e; 131 ++i) { 132 SCOPED_TRACE(*i); 133 SmallVector<StringRef, 5> ComponentStack; 134 for (sys::path::const_iterator ci = sys::path::begin(*i), 135 ce = sys::path::end(*i); 136 ci != ce; 137 ++ci) { 138 EXPECT_FALSE(ci->empty()); 139 ComponentStack.push_back(*ci); 140 } 141 142 SmallVector<StringRef, 5> ReverseComponentStack; 143 for (sys::path::reverse_iterator ci = sys::path::rbegin(*i), 144 ce = sys::path::rend(*i); 145 ci != ce; 146 ++ci) { 147 EXPECT_FALSE(ci->empty()); 148 ReverseComponentStack.push_back(*ci); 149 } 150 std::reverse(ReverseComponentStack.begin(), ReverseComponentStack.end()); 151 EXPECT_THAT(ComponentStack, testing::ContainerEq(ReverseComponentStack)); 152 153 // Crash test most of the API - since we're iterating over all of our paths 154 // here there isn't really anything reasonable to assert on in the results. 155 (void)path::has_root_path(*i); 156 (void)path::root_path(*i); 157 (void)path::has_root_name(*i); 158 (void)path::root_name(*i); 159 (void)path::has_root_directory(*i); 160 (void)path::root_directory(*i); 161 (void)path::has_parent_path(*i); 162 (void)path::parent_path(*i); 163 (void)path::has_filename(*i); 164 (void)path::filename(*i); 165 (void)path::has_stem(*i); 166 (void)path::stem(*i); 167 (void)path::has_extension(*i); 168 (void)path::extension(*i); 169 (void)path::is_absolute(*i); 170 (void)path::is_relative(*i); 171 172 SmallString<128> temp_store; 173 temp_store = *i; 174 ASSERT_NO_ERROR(fs::make_absolute(temp_store)); 175 temp_store = *i; 176 path::remove_filename(temp_store); 177 178 temp_store = *i; 179 path::replace_extension(temp_store, "ext"); 180 StringRef filename(temp_store.begin(), temp_store.size()), stem, ext; 181 stem = path::stem(filename); 182 ext = path::extension(filename); 183 EXPECT_EQ(*sys::path::rbegin(filename), (stem + ext).str()); 184 185 path::native(*i, temp_store); 186 } 187 188 SmallString<32> Relative("foo.cpp"); 189 sys::fs::make_absolute("/root", Relative); 190 Relative[5] = '/'; // Fix up windows paths. 191 ASSERT_EQ("/root/foo.cpp", Relative); 192 } 193 194 TEST(Support, FilenameParent) { 195 EXPECT_EQ("/", path::filename("/")); 196 EXPECT_EQ("", path::parent_path("/")); 197 198 EXPECT_EQ("\\", path::filename("c:\\", path::Style::windows)); 199 EXPECT_EQ("c:", path::parent_path("c:\\", path::Style::windows)); 200 201 EXPECT_EQ("/", path::filename("///")); 202 EXPECT_EQ("", path::parent_path("///")); 203 204 EXPECT_EQ("\\", path::filename("c:\\\\", path::Style::windows)); 205 EXPECT_EQ("c:", path::parent_path("c:\\\\", path::Style::windows)); 206 207 EXPECT_EQ("bar", path::filename("/foo/bar")); 208 EXPECT_EQ("/foo", path::parent_path("/foo/bar")); 209 210 EXPECT_EQ("foo", path::filename("/foo")); 211 EXPECT_EQ("/", path::parent_path("/foo")); 212 213 EXPECT_EQ("foo", path::filename("foo")); 214 EXPECT_EQ("", path::parent_path("foo")); 215 216 EXPECT_EQ(".", path::filename("foo/")); 217 EXPECT_EQ("foo", path::parent_path("foo/")); 218 219 EXPECT_EQ("//net", path::filename("//net")); 220 EXPECT_EQ("", path::parent_path("//net")); 221 222 EXPECT_EQ("/", path::filename("//net/")); 223 EXPECT_EQ("//net", path::parent_path("//net/")); 224 225 EXPECT_EQ("foo", path::filename("//net/foo")); 226 EXPECT_EQ("//net/", path::parent_path("//net/foo")); 227 228 // These checks are just to make sure we do something reasonable with the 229 // paths below. They are not meant to prescribe the one true interpretation of 230 // these paths. Other decompositions (e.g. "//" -> "" + "//") are also 231 // possible. 232 EXPECT_EQ("/", path::filename("//")); 233 EXPECT_EQ("", path::parent_path("//")); 234 235 EXPECT_EQ("\\", path::filename("\\\\", path::Style::windows)); 236 EXPECT_EQ("", path::parent_path("\\\\", path::Style::windows)); 237 238 EXPECT_EQ("\\", path::filename("\\\\\\", path::Style::windows)); 239 EXPECT_EQ("", path::parent_path("\\\\\\", path::Style::windows)); 240 } 241 242 static std::vector<StringRef> 243 GetComponents(StringRef Path, path::Style S = path::Style::native) { 244 return {path::begin(Path, S), path::end(Path)}; 245 } 246 247 TEST(Support, PathIterator) { 248 EXPECT_THAT(GetComponents("/foo"), testing::ElementsAre("/", "foo")); 249 EXPECT_THAT(GetComponents("/"), testing::ElementsAre("/")); 250 EXPECT_THAT(GetComponents("//"), testing::ElementsAre("/")); 251 EXPECT_THAT(GetComponents("///"), testing::ElementsAre("/")); 252 EXPECT_THAT(GetComponents("c/d/e/foo.txt"), 253 testing::ElementsAre("c", "d", "e", "foo.txt")); 254 EXPECT_THAT(GetComponents(".c/.d/../."), 255 testing::ElementsAre(".c", ".d", "..", ".")); 256 EXPECT_THAT(GetComponents("/c/d/e/foo.txt"), 257 testing::ElementsAre("/", "c", "d", "e", "foo.txt")); 258 EXPECT_THAT(GetComponents("/.c/.d/../."), 259 testing::ElementsAre("/", ".c", ".d", "..", ".")); 260 EXPECT_THAT(GetComponents("c:\\c\\e\\foo.txt", path::Style::windows), 261 testing::ElementsAre("c:", "\\", "c", "e", "foo.txt")); 262 EXPECT_THAT(GetComponents("//net/"), testing::ElementsAre("//net", "/")); 263 EXPECT_THAT(GetComponents("//net/c/foo.txt"), 264 testing::ElementsAre("//net", "/", "c", "foo.txt")); 265 } 266 267 TEST(Support, AbsolutePathIteratorEnd) { 268 // Trailing slashes are converted to '.' unless they are part of the root path. 269 SmallVector<std::pair<StringRef, path::Style>, 4> Paths; 270 Paths.emplace_back("/foo/", path::Style::native); 271 Paths.emplace_back("/foo//", path::Style::native); 272 Paths.emplace_back("//net/foo/", path::Style::native); 273 Paths.emplace_back("c:\\foo\\", path::Style::windows); 274 275 for (auto &Path : Paths) { 276 SCOPED_TRACE(Path.first); 277 StringRef LastComponent = *path::rbegin(Path.first, Path.second); 278 EXPECT_EQ(".", LastComponent); 279 } 280 281 SmallVector<std::pair<StringRef, path::Style>, 3> RootPaths; 282 RootPaths.emplace_back("/", path::Style::native); 283 RootPaths.emplace_back("//net/", path::Style::native); 284 RootPaths.emplace_back("c:\\", path::Style::windows); 285 RootPaths.emplace_back("//net//", path::Style::native); 286 RootPaths.emplace_back("c:\\\\", path::Style::windows); 287 288 for (auto &Path : RootPaths) { 289 SCOPED_TRACE(Path.first); 290 StringRef LastComponent = *path::rbegin(Path.first, Path.second); 291 EXPECT_EQ(1u, LastComponent.size()); 292 EXPECT_TRUE(path::is_separator(LastComponent[0], Path.second)); 293 } 294 } 295 296 TEST(Support, HomeDirectory) { 297 std::string expected; 298 #ifdef _WIN32 299 if (wchar_t const *path = ::_wgetenv(L"USERPROFILE")) { 300 auto pathLen = ::wcslen(path); 301 ArrayRef<char> ref{reinterpret_cast<char const *>(path), 302 pathLen * sizeof(wchar_t)}; 303 convertUTF16ToUTF8String(ref, expected); 304 } 305 #else 306 if (char const *path = ::getenv("HOME")) 307 expected = path; 308 #endif 309 // Do not try to test it if we don't know what to expect. 310 // On Windows we use something better than env vars. 311 if (!expected.empty()) { 312 SmallString<128> HomeDir; 313 auto status = path::home_directory(HomeDir); 314 EXPECT_TRUE(status); 315 EXPECT_EQ(expected, HomeDir); 316 } 317 } 318 319 #ifdef LLVM_ON_UNIX 320 TEST(Support, HomeDirectoryWithNoEnv) { 321 std::string OriginalStorage; 322 char const *OriginalEnv = ::getenv("HOME"); 323 if (OriginalEnv) { 324 // We're going to unset it, so make a copy and save a pointer to the copy 325 // so that we can reset it at the end of the test. 326 OriginalStorage = OriginalEnv; 327 OriginalEnv = OriginalStorage.c_str(); 328 } 329 330 // Don't run the test if we have nothing to compare against. 331 struct passwd *pw = getpwuid(getuid()); 332 if (!pw || !pw->pw_dir) return; 333 334 ::unsetenv("HOME"); 335 EXPECT_EQ(nullptr, ::getenv("HOME")); 336 std::string PwDir = pw->pw_dir; 337 338 SmallString<128> HomeDir; 339 auto status = path::home_directory(HomeDir); 340 EXPECT_TRUE(status); 341 EXPECT_EQ(PwDir, HomeDir); 342 343 // Now put the environment back to its original state (meaning that if it was 344 // unset before, we don't reset it). 345 if (OriginalEnv) ::setenv("HOME", OriginalEnv, 1); 346 } 347 #endif 348 349 TEST(Support, TempDirectory) { 350 SmallString<32> TempDir; 351 path::system_temp_directory(false, TempDir); 352 EXPECT_TRUE(!TempDir.empty()); 353 TempDir.clear(); 354 path::system_temp_directory(true, TempDir); 355 EXPECT_TRUE(!TempDir.empty()); 356 } 357 358 #ifdef _WIN32 359 static std::string path2regex(std::string Path) { 360 size_t Pos = 0; 361 while ((Pos = Path.find('\\', Pos)) != std::string::npos) { 362 Path.replace(Pos, 1, "\\\\"); 363 Pos += 2; 364 } 365 return Path; 366 } 367 368 /// Helper for running temp dir test in separated process. See below. 369 #define EXPECT_TEMP_DIR(prepare, expected) \ 370 EXPECT_EXIT( \ 371 { \ 372 prepare; \ 373 SmallString<300> TempDir; \ 374 path::system_temp_directory(true, TempDir); \ 375 raw_os_ostream(std::cerr) << TempDir; \ 376 std::exit(0); \ 377 }, \ 378 ::testing::ExitedWithCode(0), path2regex(expected)) 379 380 TEST(SupportDeathTest, TempDirectoryOnWindows) { 381 // In this test we want to check how system_temp_directory responds to 382 // different values of specific env vars. To prevent corrupting env vars of 383 // the current process all checks are done in separated processes. 384 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"C:\\OtherFolder"), "C:\\OtherFolder"); 385 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"C:/Unix/Path/Seperators"), 386 "C:\\Unix\\Path\\Seperators"); 387 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"Local Path"), ".+\\Local Path$"); 388 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"F:\\TrailingSep\\"), "F:\\TrailingSep"); 389 EXPECT_TEMP_DIR( 390 _wputenv_s(L"TMP", L"C:\\2\x03C0r-\x00B5\x00B3\\\x2135\x2080"), 391 "C:\\2\xCF\x80r-\xC2\xB5\xC2\xB3\\\xE2\x84\xB5\xE2\x82\x80"); 392 393 // Test $TMP empty, $TEMP set. 394 EXPECT_TEMP_DIR( 395 { 396 _wputenv_s(L"TMP", L""); 397 _wputenv_s(L"TEMP", L"C:\\Valid\\Path"); 398 }, 399 "C:\\Valid\\Path"); 400 401 // All related env vars empty 402 EXPECT_TEMP_DIR( 403 { 404 _wputenv_s(L"TMP", L""); 405 _wputenv_s(L"TEMP", L""); 406 _wputenv_s(L"USERPROFILE", L""); 407 }, 408 "C:\\Temp"); 409 410 // Test evn var / path with 260 chars. 411 SmallString<270> Expected{"C:\\Temp\\AB\\123456789"}; 412 while (Expected.size() < 260) 413 Expected.append("\\DirNameWith19Charss"); 414 ASSERT_EQ(260U, Expected.size()); 415 EXPECT_TEMP_DIR(_putenv_s("TMP", Expected.c_str()), Expected.c_str()); 416 } 417 #endif 418 419 class FileSystemTest : public testing::Test { 420 protected: 421 /// Unique temporary directory in which all created filesystem entities must 422 /// be placed. It is removed at the end of each test (must be empty). 423 SmallString<128> TestDirectory; 424 SmallString<128> NonExistantFile; 425 426 void SetUp() override { 427 ASSERT_NO_ERROR( 428 fs::createUniqueDirectory("file-system-test", TestDirectory)); 429 // We don't care about this specific file. 430 errs() << "Test Directory: " << TestDirectory << '\n'; 431 errs().flush(); 432 NonExistantFile = TestDirectory; 433 434 // Even though this value is hardcoded, is a 128-bit GUID, so we should be 435 // guaranteed that this file will never exist. 436 sys::path::append(NonExistantFile, "1B28B495C16344CB9822E588CD4C3EF0"); 437 } 438 439 void TearDown() override { ASSERT_NO_ERROR(fs::remove(TestDirectory.str())); } 440 }; 441 442 TEST_F(FileSystemTest, Unique) { 443 // Create a temp file. 444 int FileDescriptor; 445 SmallString<64> TempPath; 446 ASSERT_NO_ERROR( 447 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 448 449 // The same file should return an identical unique id. 450 fs::UniqueID F1, F2; 451 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F1)); 452 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F2)); 453 ASSERT_EQ(F1, F2); 454 455 // Different files should return different unique ids. 456 int FileDescriptor2; 457 SmallString<64> TempPath2; 458 ASSERT_NO_ERROR( 459 fs::createTemporaryFile("prefix", "temp", FileDescriptor2, TempPath2)); 460 461 fs::UniqueID D; 462 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D)); 463 ASSERT_NE(D, F1); 464 ::close(FileDescriptor2); 465 466 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 467 468 // Two paths representing the same file on disk should still provide the 469 // same unique id. We can test this by making a hard link. 470 ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2))); 471 fs::UniqueID D2; 472 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D2)); 473 ASSERT_EQ(D2, F1); 474 475 ::close(FileDescriptor); 476 477 SmallString<128> Dir1; 478 ASSERT_NO_ERROR( 479 fs::createUniqueDirectory("dir1", Dir1)); 480 ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F1)); 481 ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F2)); 482 ASSERT_EQ(F1, F2); 483 484 SmallString<128> Dir2; 485 ASSERT_NO_ERROR( 486 fs::createUniqueDirectory("dir2", Dir2)); 487 ASSERT_NO_ERROR(fs::getUniqueID(Dir2.c_str(), F2)); 488 ASSERT_NE(F1, F2); 489 ASSERT_NO_ERROR(fs::remove(Dir1)); 490 ASSERT_NO_ERROR(fs::remove(Dir2)); 491 ASSERT_NO_ERROR(fs::remove(TempPath2)); 492 ASSERT_NO_ERROR(fs::remove(TempPath)); 493 } 494 495 TEST_F(FileSystemTest, RealPath) { 496 ASSERT_NO_ERROR( 497 fs::create_directories(Twine(TestDirectory) + "/test1/test2/test3")); 498 ASSERT_TRUE(fs::exists(Twine(TestDirectory) + "/test1/test2/test3")); 499 500 SmallString<64> RealBase; 501 SmallString<64> Expected; 502 SmallString<64> Actual; 503 504 // TestDirectory itself might be under a symlink or have been specified with 505 // a different case than the existing temp directory. In such cases real_path 506 // on the concatenated path will differ in the TestDirectory portion from 507 // how we specified it. Make sure to compare against the real_path of the 508 // TestDirectory, and not just the value of TestDirectory. 509 ASSERT_NO_ERROR(fs::real_path(TestDirectory, RealBase)); 510 path::native(Twine(RealBase) + "/test1/test2", Expected); 511 512 ASSERT_NO_ERROR(fs::real_path( 513 Twine(TestDirectory) + "/././test1/../test1/test2/./test3/..", Actual)); 514 515 EXPECT_EQ(Expected, Actual); 516 517 SmallString<64> HomeDir; 518 519 // This can fail if $HOME is not set and getpwuid fails. 520 bool Result = llvm::sys::path::home_directory(HomeDir); 521 if (Result) { 522 ASSERT_NO_ERROR(fs::real_path(HomeDir, Expected)); 523 ASSERT_NO_ERROR(fs::real_path("~", Actual, true)); 524 EXPECT_EQ(Expected, Actual); 525 ASSERT_NO_ERROR(fs::real_path("~/", Actual, true)); 526 EXPECT_EQ(Expected, Actual); 527 } 528 529 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/test1")); 530 } 531 532 TEST_F(FileSystemTest, ExpandTilde) { 533 SmallString<64> Expected; 534 SmallString<64> Actual; 535 SmallString<64> HomeDir; 536 537 // This can fail if $HOME is not set and getpwuid fails. 538 bool Result = llvm::sys::path::home_directory(HomeDir); 539 if (Result) { 540 fs::expand_tilde(HomeDir, Expected); 541 542 fs::expand_tilde("~", Actual); 543 EXPECT_EQ(Expected, Actual); 544 545 #ifdef _WIN32 546 Expected += "\\foo"; 547 fs::expand_tilde("~\\foo", Actual); 548 #else 549 Expected += "/foo"; 550 fs::expand_tilde("~/foo", Actual); 551 #endif 552 553 EXPECT_EQ(Expected, Actual); 554 } 555 } 556 557 #ifdef LLVM_ON_UNIX 558 TEST_F(FileSystemTest, RealPathNoReadPerm) { 559 SmallString<64> Expanded; 560 561 ASSERT_NO_ERROR( 562 fs::create_directories(Twine(TestDirectory) + "/noreadperm")); 563 ASSERT_TRUE(fs::exists(Twine(TestDirectory) + "/noreadperm")); 564 565 fs::setPermissions(Twine(TestDirectory) + "/noreadperm", fs::no_perms); 566 fs::setPermissions(Twine(TestDirectory) + "/noreadperm", fs::all_exe); 567 568 ASSERT_NO_ERROR(fs::real_path(Twine(TestDirectory) + "/noreadperm", Expanded, 569 false)); 570 571 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/noreadperm")); 572 } 573 #endif 574 575 576 TEST_F(FileSystemTest, TempFileKeepDiscard) { 577 // We can keep then discard. 578 auto TempFileOrError = fs::TempFile::create(TestDirectory + "/test-%%%%"); 579 ASSERT_TRUE((bool)TempFileOrError); 580 fs::TempFile File = std::move(*TempFileOrError); 581 ASSERT_FALSE((bool)File.keep(TestDirectory + "/keep")); 582 ASSERT_FALSE((bool)File.discard()); 583 ASSERT_TRUE(fs::exists(TestDirectory + "/keep")); 584 ASSERT_NO_ERROR(fs::remove(TestDirectory + "/keep")); 585 } 586 587 TEST_F(FileSystemTest, TempFileDiscardDiscard) { 588 // We can discard twice. 589 auto TempFileOrError = fs::TempFile::create(TestDirectory + "/test-%%%%"); 590 ASSERT_TRUE((bool)TempFileOrError); 591 fs::TempFile File = std::move(*TempFileOrError); 592 ASSERT_FALSE((bool)File.discard()); 593 ASSERT_FALSE((bool)File.discard()); 594 ASSERT_FALSE(fs::exists(TestDirectory + "/keep")); 595 } 596 597 TEST_F(FileSystemTest, TempFiles) { 598 // Create a temp file. 599 int FileDescriptor; 600 SmallString<64> TempPath; 601 ASSERT_NO_ERROR( 602 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 603 604 // Make sure it exists. 605 ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); 606 607 // Create another temp tile. 608 int FD2; 609 SmallString<64> TempPath2; 610 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD2, TempPath2)); 611 ASSERT_TRUE(TempPath2.endswith(".temp")); 612 ASSERT_NE(TempPath.str(), TempPath2.str()); 613 614 fs::file_status A, B; 615 ASSERT_NO_ERROR(fs::status(Twine(TempPath), A)); 616 ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B)); 617 EXPECT_FALSE(fs::equivalent(A, B)); 618 619 ::close(FD2); 620 621 // Remove Temp2. 622 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 623 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 624 ASSERT_EQ(fs::remove(Twine(TempPath2), false), 625 errc::no_such_file_or_directory); 626 627 std::error_code EC = fs::status(TempPath2.c_str(), B); 628 EXPECT_EQ(EC, errc::no_such_file_or_directory); 629 EXPECT_EQ(B.type(), fs::file_type::file_not_found); 630 631 // Make sure Temp2 doesn't exist. 632 ASSERT_EQ(fs::access(Twine(TempPath2), sys::fs::AccessMode::Exist), 633 errc::no_such_file_or_directory); 634 635 SmallString<64> TempPath3; 636 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "", TempPath3)); 637 ASSERT_FALSE(TempPath3.endswith(".")); 638 FileRemover Cleanup3(TempPath3); 639 640 // Create a hard link to Temp1. 641 ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2))); 642 bool equal; 643 ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal)); 644 EXPECT_TRUE(equal); 645 ASSERT_NO_ERROR(fs::status(Twine(TempPath), A)); 646 ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B)); 647 EXPECT_TRUE(fs::equivalent(A, B)); 648 649 // Remove Temp1. 650 ::close(FileDescriptor); 651 ASSERT_NO_ERROR(fs::remove(Twine(TempPath))); 652 653 // Remove the hard link. 654 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 655 656 // Make sure Temp1 doesn't exist. 657 ASSERT_EQ(fs::access(Twine(TempPath), sys::fs::AccessMode::Exist), 658 errc::no_such_file_or_directory); 659 660 #ifdef _WIN32 661 // Path name > 260 chars should get an error. 662 const char *Path270 = 663 "abcdefghijklmnopqrstuvwxyz9abcdefghijklmnopqrstuvwxyz8" 664 "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6" 665 "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4" 666 "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2" 667 "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0"; 668 EXPECT_EQ(fs::createUniqueFile(Path270, FileDescriptor, TempPath), 669 errc::invalid_argument); 670 // Relative path < 247 chars, no problem. 671 const char *Path216 = 672 "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6" 673 "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4" 674 "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2" 675 "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0"; 676 ASSERT_NO_ERROR(fs::createTemporaryFile(Path216, "", TempPath)); 677 ASSERT_NO_ERROR(fs::remove(Twine(TempPath))); 678 #endif 679 } 680 681 TEST_F(FileSystemTest, TempFileCollisions) { 682 SmallString<128> TestDirectory; 683 ASSERT_NO_ERROR( 684 fs::createUniqueDirectory("CreateUniqueFileTest", TestDirectory)); 685 FileRemover Cleanup(TestDirectory); 686 SmallString<128> Model = TestDirectory; 687 path::append(Model, "%.tmp"); 688 SmallString<128> Path; 689 std::vector<fs::TempFile> TempFiles; 690 691 auto TryCreateTempFile = [&]() { 692 Expected<fs::TempFile> T = fs::TempFile::create(Model); 693 if (T) { 694 TempFiles.push_back(std::move(*T)); 695 return true; 696 } else { 697 logAllUnhandledErrors(T.takeError(), errs(), 698 "Failed to create temporary file: "); 699 return false; 700 } 701 }; 702 703 // We should be able to create exactly 16 temporary files. 704 for (int i = 0; i < 16; ++i) 705 EXPECT_TRUE(TryCreateTempFile()); 706 EXPECT_FALSE(TryCreateTempFile()); 707 708 for (fs::TempFile &T : TempFiles) 709 cantFail(T.discard()); 710 } 711 712 TEST_F(FileSystemTest, CreateDir) { 713 ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo")); 714 ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo")); 715 ASSERT_EQ(fs::create_directory(Twine(TestDirectory) + "foo", false), 716 errc::file_exists); 717 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "foo")); 718 719 #ifdef LLVM_ON_UNIX 720 // Set a 0000 umask so that we can test our directory permissions. 721 mode_t OldUmask = ::umask(0000); 722 723 fs::file_status Status; 724 ASSERT_NO_ERROR( 725 fs::create_directory(Twine(TestDirectory) + "baz500", false, 726 fs::perms::owner_read | fs::perms::owner_exe)); 727 ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz500", Status)); 728 ASSERT_EQ(Status.permissions() & fs::perms::all_all, 729 fs::perms::owner_read | fs::perms::owner_exe); 730 ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "baz777", false, 731 fs::perms::all_all)); 732 ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz777", Status)); 733 ASSERT_EQ(Status.permissions() & fs::perms::all_all, fs::perms::all_all); 734 735 // Restore umask to be safe. 736 ::umask(OldUmask); 737 #endif 738 739 #ifdef _WIN32 740 // Prove that create_directories() can handle a pathname > 248 characters, 741 // which is the documented limit for CreateDirectory(). 742 // (248 is MAX_PATH subtracting room for an 8.3 filename.) 743 // Generate a directory path guaranteed to fall into that range. 744 size_t TmpLen = TestDirectory.size(); 745 const char *OneDir = "\\123456789"; 746 size_t OneDirLen = strlen(OneDir); 747 ASSERT_LT(OneDirLen, 12U); 748 size_t NLevels = ((248 - TmpLen) / OneDirLen) + 1; 749 SmallString<260> LongDir(TestDirectory); 750 for (size_t I = 0; I < NLevels; ++I) 751 LongDir.append(OneDir); 752 ASSERT_NO_ERROR(fs::create_directories(Twine(LongDir))); 753 ASSERT_NO_ERROR(fs::create_directories(Twine(LongDir))); 754 ASSERT_EQ(fs::create_directories(Twine(LongDir), false), 755 errc::file_exists); 756 // Tidy up, "recursively" removing the directories. 757 StringRef ThisDir(LongDir); 758 for (size_t J = 0; J < NLevels; ++J) { 759 ASSERT_NO_ERROR(fs::remove(ThisDir)); 760 ThisDir = path::parent_path(ThisDir); 761 } 762 763 // Also verify that paths with Unix separators are handled correctly. 764 std::string LongPathWithUnixSeparators(TestDirectory.str()); 765 // Add at least one subdirectory to TestDirectory, and replace slashes with 766 // backslashes 767 do { 768 LongPathWithUnixSeparators.append("/DirNameWith19Charss"); 769 } while (LongPathWithUnixSeparators.size() < 260); 770 std::replace(LongPathWithUnixSeparators.begin(), 771 LongPathWithUnixSeparators.end(), 772 '\\', '/'); 773 ASSERT_NO_ERROR(fs::create_directories(Twine(LongPathWithUnixSeparators))); 774 // cleanup 775 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + 776 "/DirNameWith19Charss")); 777 778 // Similarly for a relative pathname. Need to set the current directory to 779 // TestDirectory so that the one we create ends up in the right place. 780 char PreviousDir[260]; 781 size_t PreviousDirLen = ::GetCurrentDirectoryA(260, PreviousDir); 782 ASSERT_GT(PreviousDirLen, 0U); 783 ASSERT_LT(PreviousDirLen, 260U); 784 ASSERT_NE(::SetCurrentDirectoryA(TestDirectory.c_str()), 0); 785 LongDir.clear(); 786 // Generate a relative directory name with absolute length > 248. 787 size_t LongDirLen = 249 - TestDirectory.size(); 788 LongDir.assign(LongDirLen, 'a'); 789 ASSERT_NO_ERROR(fs::create_directory(Twine(LongDir))); 790 // While we're here, prove that .. and . handling works in these long paths. 791 const char *DotDotDirs = "\\..\\.\\b"; 792 LongDir.append(DotDotDirs); 793 ASSERT_NO_ERROR(fs::create_directory("b")); 794 ASSERT_EQ(fs::create_directory(Twine(LongDir), false), errc::file_exists); 795 // And clean up. 796 ASSERT_NO_ERROR(fs::remove("b")); 797 ASSERT_NO_ERROR(fs::remove( 798 Twine(LongDir.substr(0, LongDir.size() - strlen(DotDotDirs))))); 799 ASSERT_NE(::SetCurrentDirectoryA(PreviousDir), 0); 800 #endif 801 } 802 803 TEST_F(FileSystemTest, DirectoryIteration) { 804 std::error_code ec; 805 for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec)) 806 ASSERT_NO_ERROR(ec); 807 808 // Create a known hierarchy to recurse over. 809 ASSERT_NO_ERROR( 810 fs::create_directories(Twine(TestDirectory) + "/recursive/a0/aa1")); 811 ASSERT_NO_ERROR( 812 fs::create_directories(Twine(TestDirectory) + "/recursive/a0/ab1")); 813 ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) + 814 "/recursive/dontlookhere/da1")); 815 ASSERT_NO_ERROR( 816 fs::create_directories(Twine(TestDirectory) + "/recursive/z0/za1")); 817 ASSERT_NO_ERROR( 818 fs::create_directories(Twine(TestDirectory) + "/recursive/pop/p1")); 819 typedef std::vector<std::string> v_t; 820 v_t visited; 821 for (fs::recursive_directory_iterator i(Twine(TestDirectory) 822 + "/recursive", ec), e; i != e; i.increment(ec)){ 823 ASSERT_NO_ERROR(ec); 824 if (path::filename(i->path()) == "p1") { 825 i.pop(); 826 // FIXME: recursive_directory_iterator should be more robust. 827 if (i == e) break; 828 } 829 if (path::filename(i->path()) == "dontlookhere") 830 i.no_push(); 831 visited.push_back(path::filename(i->path())); 832 } 833 v_t::const_iterator a0 = find(visited, "a0"); 834 v_t::const_iterator aa1 = find(visited, "aa1"); 835 v_t::const_iterator ab1 = find(visited, "ab1"); 836 v_t::const_iterator dontlookhere = find(visited, "dontlookhere"); 837 v_t::const_iterator da1 = find(visited, "da1"); 838 v_t::const_iterator z0 = find(visited, "z0"); 839 v_t::const_iterator za1 = find(visited, "za1"); 840 v_t::const_iterator pop = find(visited, "pop"); 841 v_t::const_iterator p1 = find(visited, "p1"); 842 843 // Make sure that each path was visited correctly. 844 ASSERT_NE(a0, visited.end()); 845 ASSERT_NE(aa1, visited.end()); 846 ASSERT_NE(ab1, visited.end()); 847 ASSERT_NE(dontlookhere, visited.end()); 848 ASSERT_EQ(da1, visited.end()); // Not visited. 849 ASSERT_NE(z0, visited.end()); 850 ASSERT_NE(za1, visited.end()); 851 ASSERT_NE(pop, visited.end()); 852 ASSERT_EQ(p1, visited.end()); // Not visited. 853 854 // Make sure that parents were visited before children. No other ordering 855 // guarantees can be made across siblings. 856 ASSERT_LT(a0, aa1); 857 ASSERT_LT(a0, ab1); 858 ASSERT_LT(z0, za1); 859 860 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/aa1")); 861 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/ab1")); 862 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0")); 863 ASSERT_NO_ERROR( 864 fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere/da1")); 865 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere")); 866 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop/p1")); 867 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop")); 868 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0/za1")); 869 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0")); 870 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive")); 871 872 // Test recursive_directory_iterator level() 873 ASSERT_NO_ERROR( 874 fs::create_directories(Twine(TestDirectory) + "/reclevel/a/b/c")); 875 fs::recursive_directory_iterator I(Twine(TestDirectory) + "/reclevel", ec), E; 876 for (int l = 0; I != E; I.increment(ec), ++l) { 877 ASSERT_NO_ERROR(ec); 878 EXPECT_EQ(I.level(), l); 879 } 880 EXPECT_EQ(I, E); 881 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a/b/c")); 882 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a/b")); 883 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a")); 884 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel")); 885 } 886 887 #ifdef LLVM_ON_UNIX 888 TEST_F(FileSystemTest, BrokenSymlinkDirectoryIteration) { 889 // Create a known hierarchy to recurse over. 890 ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) + "/symlink")); 891 ASSERT_NO_ERROR( 892 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/a")); 893 ASSERT_NO_ERROR( 894 fs::create_directories(Twine(TestDirectory) + "/symlink/b/bb")); 895 ASSERT_NO_ERROR( 896 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/b/ba")); 897 ASSERT_NO_ERROR( 898 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/b/bc")); 899 ASSERT_NO_ERROR( 900 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/c")); 901 ASSERT_NO_ERROR( 902 fs::create_directories(Twine(TestDirectory) + "/symlink/d/dd/ddd")); 903 ASSERT_NO_ERROR(fs::create_link(Twine(TestDirectory) + "/symlink/d/dd", 904 Twine(TestDirectory) + "/symlink/d/da")); 905 ASSERT_NO_ERROR( 906 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/e")); 907 908 typedef std::vector<std::string> v_t; 909 v_t VisitedNonBrokenSymlinks; 910 v_t VisitedBrokenSymlinks; 911 std::error_code ec; 912 using testing::UnorderedElementsAre; 913 using testing::UnorderedElementsAreArray; 914 915 // Broken symbol links are expected to throw an error. 916 for (fs::directory_iterator i(Twine(TestDirectory) + "/symlink", ec), e; 917 i != e; i.increment(ec)) { 918 ASSERT_NO_ERROR(ec); 919 if (i->status().getError() == 920 std::make_error_code(std::errc::no_such_file_or_directory)) { 921 VisitedBrokenSymlinks.push_back(path::filename(i->path())); 922 continue; 923 } 924 VisitedNonBrokenSymlinks.push_back(path::filename(i->path())); 925 } 926 EXPECT_THAT(VisitedNonBrokenSymlinks, UnorderedElementsAre("b", "d")); 927 VisitedNonBrokenSymlinks.clear(); 928 929 EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre("a", "c", "e")); 930 VisitedBrokenSymlinks.clear(); 931 932 // Broken symbol links are expected to throw an error. 933 for (fs::recursive_directory_iterator i( 934 Twine(TestDirectory) + "/symlink", ec), e; i != e; i.increment(ec)) { 935 ASSERT_NO_ERROR(ec); 936 if (i->status().getError() == 937 std::make_error_code(std::errc::no_such_file_or_directory)) { 938 VisitedBrokenSymlinks.push_back(path::filename(i->path())); 939 continue; 940 } 941 VisitedNonBrokenSymlinks.push_back(path::filename(i->path())); 942 } 943 EXPECT_THAT(VisitedNonBrokenSymlinks, 944 UnorderedElementsAre("b", "bb", "d", "da", "dd", "ddd", "ddd")); 945 VisitedNonBrokenSymlinks.clear(); 946 947 EXPECT_THAT(VisitedBrokenSymlinks, 948 UnorderedElementsAre("a", "ba", "bc", "c", "e")); 949 VisitedBrokenSymlinks.clear(); 950 951 for (fs::recursive_directory_iterator i( 952 Twine(TestDirectory) + "/symlink", ec, /*follow_symlinks=*/false), e; 953 i != e; i.increment(ec)) { 954 ASSERT_NO_ERROR(ec); 955 if (i->status().getError() == 956 std::make_error_code(std::errc::no_such_file_or_directory)) { 957 VisitedBrokenSymlinks.push_back(path::filename(i->path())); 958 continue; 959 } 960 VisitedNonBrokenSymlinks.push_back(path::filename(i->path())); 961 } 962 EXPECT_THAT(VisitedNonBrokenSymlinks, 963 UnorderedElementsAreArray({"a", "b", "ba", "bb", "bc", "c", "d", 964 "da", "dd", "ddd", "e"})); 965 VisitedNonBrokenSymlinks.clear(); 966 967 EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre()); 968 VisitedBrokenSymlinks.clear(); 969 970 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/symlink")); 971 } 972 #endif 973 974 TEST_F(FileSystemTest, Remove) { 975 SmallString<64> BaseDir; 976 SmallString<64> Paths[4]; 977 int fds[4]; 978 ASSERT_NO_ERROR(fs::createUniqueDirectory("fs_remove", BaseDir)); 979 980 ASSERT_NO_ERROR(fs::create_directories(Twine(BaseDir) + "/foo/bar/baz")); 981 ASSERT_NO_ERROR(fs::create_directories(Twine(BaseDir) + "/foo/bar/buzz")); 982 ASSERT_NO_ERROR(fs::createUniqueFile( 983 Twine(BaseDir) + "/foo/bar/baz/%%%%%%.tmp", fds[0], Paths[0])); 984 ASSERT_NO_ERROR(fs::createUniqueFile( 985 Twine(BaseDir) + "/foo/bar/baz/%%%%%%.tmp", fds[1], Paths[1])); 986 ASSERT_NO_ERROR(fs::createUniqueFile( 987 Twine(BaseDir) + "/foo/bar/buzz/%%%%%%.tmp", fds[2], Paths[2])); 988 ASSERT_NO_ERROR(fs::createUniqueFile( 989 Twine(BaseDir) + "/foo/bar/buzz/%%%%%%.tmp", fds[3], Paths[3])); 990 991 for (int fd : fds) 992 ::close(fd); 993 994 EXPECT_TRUE(fs::exists(Twine(BaseDir) + "/foo/bar/baz")); 995 EXPECT_TRUE(fs::exists(Twine(BaseDir) + "/foo/bar/buzz")); 996 EXPECT_TRUE(fs::exists(Paths[0])); 997 EXPECT_TRUE(fs::exists(Paths[1])); 998 EXPECT_TRUE(fs::exists(Paths[2])); 999 EXPECT_TRUE(fs::exists(Paths[3])); 1000 1001 ASSERT_NO_ERROR(fs::remove_directories("D:/footest")); 1002 1003 ASSERT_NO_ERROR(fs::remove_directories(BaseDir)); 1004 ASSERT_FALSE(fs::exists(BaseDir)); 1005 } 1006 1007 #ifdef _WIN32 1008 TEST_F(FileSystemTest, CarriageReturn) { 1009 SmallString<128> FilePathname(TestDirectory); 1010 std::error_code EC; 1011 path::append(FilePathname, "test"); 1012 1013 { 1014 raw_fd_ostream File(FilePathname, EC, sys::fs::F_Text); 1015 ASSERT_NO_ERROR(EC); 1016 File << '\n'; 1017 } 1018 { 1019 auto Buf = MemoryBuffer::getFile(FilePathname.str()); 1020 EXPECT_TRUE((bool)Buf); 1021 EXPECT_EQ(Buf.get()->getBuffer(), "\r\n"); 1022 } 1023 1024 { 1025 raw_fd_ostream File(FilePathname, EC, sys::fs::F_None); 1026 ASSERT_NO_ERROR(EC); 1027 File << '\n'; 1028 } 1029 { 1030 auto Buf = MemoryBuffer::getFile(FilePathname.str()); 1031 EXPECT_TRUE((bool)Buf); 1032 EXPECT_EQ(Buf.get()->getBuffer(), "\n"); 1033 } 1034 ASSERT_NO_ERROR(fs::remove(Twine(FilePathname))); 1035 } 1036 #endif 1037 1038 TEST_F(FileSystemTest, Resize) { 1039 int FD; 1040 SmallString<64> TempPath; 1041 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1042 ASSERT_NO_ERROR(fs::resize_file(FD, 123)); 1043 fs::file_status Status; 1044 ASSERT_NO_ERROR(fs::status(FD, Status)); 1045 ASSERT_EQ(Status.getSize(), 123U); 1046 ::close(FD); 1047 ASSERT_NO_ERROR(fs::remove(TempPath)); 1048 } 1049 1050 TEST_F(FileSystemTest, MD5) { 1051 int FD; 1052 SmallString<64> TempPath; 1053 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1054 StringRef Data("abcdefghijklmnopqrstuvwxyz"); 1055 ASSERT_EQ(write(FD, Data.data(), Data.size()), static_cast<ssize_t>(Data.size())); 1056 lseek(FD, 0, SEEK_SET); 1057 auto Hash = fs::md5_contents(FD); 1058 ::close(FD); 1059 ASSERT_NO_ERROR(Hash.getError()); 1060 1061 EXPECT_STREQ("c3fcd3d76192e4007dfb496cca67e13b", Hash->digest().c_str()); 1062 } 1063 1064 TEST_F(FileSystemTest, FileMapping) { 1065 // Create a temp file. 1066 int FileDescriptor; 1067 SmallString<64> TempPath; 1068 ASSERT_NO_ERROR( 1069 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 1070 unsigned Size = 4096; 1071 ASSERT_NO_ERROR(fs::resize_file(FileDescriptor, Size)); 1072 1073 // Map in temp file and add some content 1074 std::error_code EC; 1075 StringRef Val("hello there"); 1076 { 1077 fs::mapped_file_region mfr(FileDescriptor, 1078 fs::mapped_file_region::readwrite, Size, 0, EC); 1079 ASSERT_NO_ERROR(EC); 1080 std::copy(Val.begin(), Val.end(), mfr.data()); 1081 // Explicitly add a 0. 1082 mfr.data()[Val.size()] = 0; 1083 // Unmap temp file 1084 } 1085 ASSERT_EQ(close(FileDescriptor), 0); 1086 1087 // Map it back in read-only 1088 { 1089 int FD; 1090 EC = fs::openFileForRead(Twine(TempPath), FD); 1091 ASSERT_NO_ERROR(EC); 1092 fs::mapped_file_region mfr(FD, fs::mapped_file_region::readonly, Size, 0, EC); 1093 ASSERT_NO_ERROR(EC); 1094 1095 // Verify content 1096 EXPECT_EQ(StringRef(mfr.const_data()), Val); 1097 1098 // Unmap temp file 1099 fs::mapped_file_region m(FD, fs::mapped_file_region::readonly, Size, 0, EC); 1100 ASSERT_NO_ERROR(EC); 1101 ASSERT_EQ(close(FD), 0); 1102 } 1103 ASSERT_NO_ERROR(fs::remove(TempPath)); 1104 } 1105 1106 TEST(Support, NormalizePath) { 1107 using TestTuple = std::tuple<const char *, const char *, const char *>; 1108 std::vector<TestTuple> Tests; 1109 Tests.emplace_back("a", "a", "a"); 1110 Tests.emplace_back("a/b", "a\\b", "a/b"); 1111 Tests.emplace_back("a\\b", "a\\b", "a/b"); 1112 Tests.emplace_back("a\\\\b", "a\\\\b", "a\\\\b"); 1113 Tests.emplace_back("\\a", "\\a", "/a"); 1114 Tests.emplace_back("a\\", "a\\", "a/"); 1115 1116 for (auto &T : Tests) { 1117 SmallString<64> Win(std::get<0>(T)); 1118 SmallString<64> Posix(Win); 1119 path::native(Win, path::Style::windows); 1120 path::native(Posix, path::Style::posix); 1121 EXPECT_EQ(std::get<1>(T), Win); 1122 EXPECT_EQ(std::get<2>(T), Posix); 1123 } 1124 1125 #if defined(_WIN32) 1126 SmallString<64> PathHome; 1127 path::home_directory(PathHome); 1128 1129 const char *Path7a = "~/aaa"; 1130 SmallString<64> Path7(Path7a); 1131 path::native(Path7); 1132 EXPECT_TRUE(Path7.endswith("\\aaa")); 1133 EXPECT_TRUE(Path7.startswith(PathHome)); 1134 EXPECT_EQ(Path7.size(), PathHome.size() + strlen(Path7a + 1)); 1135 1136 const char *Path8a = "~"; 1137 SmallString<64> Path8(Path8a); 1138 path::native(Path8); 1139 EXPECT_EQ(Path8, PathHome); 1140 1141 const char *Path9a = "~aaa"; 1142 SmallString<64> Path9(Path9a); 1143 path::native(Path9); 1144 EXPECT_EQ(Path9, "~aaa"); 1145 1146 const char *Path10a = "aaa/~/b"; 1147 SmallString<64> Path10(Path10a); 1148 path::native(Path10); 1149 EXPECT_EQ(Path10, "aaa\\~\\b"); 1150 #endif 1151 } 1152 1153 TEST(Support, RemoveLeadingDotSlash) { 1154 StringRef Path1("././/foolz/wat"); 1155 StringRef Path2("./////"); 1156 1157 Path1 = path::remove_leading_dotslash(Path1); 1158 EXPECT_EQ(Path1, "foolz/wat"); 1159 Path2 = path::remove_leading_dotslash(Path2); 1160 EXPECT_EQ(Path2, ""); 1161 } 1162 1163 static std::string remove_dots(StringRef path, bool remove_dot_dot, 1164 path::Style style) { 1165 SmallString<256> buffer(path); 1166 path::remove_dots(buffer, remove_dot_dot, style); 1167 return buffer.str(); 1168 } 1169 1170 TEST(Support, RemoveDots) { 1171 EXPECT_EQ("foolz\\wat", 1172 remove_dots(".\\.\\\\foolz\\wat", false, path::Style::windows)); 1173 EXPECT_EQ("", remove_dots(".\\\\\\\\\\", false, path::Style::windows)); 1174 1175 EXPECT_EQ("a\\..\\b\\c", 1176 remove_dots(".\\a\\..\\b\\c", false, path::Style::windows)); 1177 EXPECT_EQ("b\\c", remove_dots(".\\a\\..\\b\\c", true, path::Style::windows)); 1178 EXPECT_EQ("c", remove_dots(".\\.\\c", true, path::Style::windows)); 1179 EXPECT_EQ("..\\a\\c", 1180 remove_dots("..\\a\\b\\..\\c", true, path::Style::windows)); 1181 EXPECT_EQ("..\\..\\a\\c", 1182 remove_dots("..\\..\\a\\b\\..\\c", true, path::Style::windows)); 1183 1184 SmallString<64> Path1(".\\.\\c"); 1185 EXPECT_TRUE(path::remove_dots(Path1, true, path::Style::windows)); 1186 EXPECT_EQ("c", Path1); 1187 1188 EXPECT_EQ("foolz/wat", 1189 remove_dots("././/foolz/wat", false, path::Style::posix)); 1190 EXPECT_EQ("", remove_dots("./////", false, path::Style::posix)); 1191 1192 EXPECT_EQ("a/../b/c", remove_dots("./a/../b/c", false, path::Style::posix)); 1193 EXPECT_EQ("b/c", remove_dots("./a/../b/c", true, path::Style::posix)); 1194 EXPECT_EQ("c", remove_dots("././c", true, path::Style::posix)); 1195 EXPECT_EQ("../a/c", remove_dots("../a/b/../c", true, path::Style::posix)); 1196 EXPECT_EQ("../../a/c", 1197 remove_dots("../../a/b/../c", true, path::Style::posix)); 1198 EXPECT_EQ("/a/c", remove_dots("/../../a/c", true, path::Style::posix)); 1199 EXPECT_EQ("/a/c", 1200 remove_dots("/../a/b//../././/c", true, path::Style::posix)); 1201 1202 SmallString<64> Path2("././c"); 1203 EXPECT_TRUE(path::remove_dots(Path2, true, path::Style::posix)); 1204 EXPECT_EQ("c", Path2); 1205 } 1206 1207 TEST(Support, ReplacePathPrefix) { 1208 SmallString<64> Path1("/foo"); 1209 SmallString<64> Path2("/old/foo"); 1210 SmallString<64> OldPrefix("/old"); 1211 SmallString<64> NewPrefix("/new"); 1212 SmallString<64> NewPrefix2("/longernew"); 1213 SmallString<64> EmptyPrefix(""); 1214 1215 SmallString<64> Path = Path1; 1216 path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1217 EXPECT_EQ(Path, "/foo"); 1218 Path = Path2; 1219 path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1220 EXPECT_EQ(Path, "/new/foo"); 1221 Path = Path2; 1222 path::replace_path_prefix(Path, OldPrefix, NewPrefix2); 1223 EXPECT_EQ(Path, "/longernew/foo"); 1224 Path = Path1; 1225 path::replace_path_prefix(Path, EmptyPrefix, NewPrefix); 1226 EXPECT_EQ(Path, "/new/foo"); 1227 Path = Path2; 1228 path::replace_path_prefix(Path, OldPrefix, EmptyPrefix); 1229 EXPECT_EQ(Path, "/foo"); 1230 } 1231 1232 TEST_F(FileSystemTest, OpenFileForRead) { 1233 // Create a temp file. 1234 int FileDescriptor; 1235 SmallString<64> TempPath; 1236 ASSERT_NO_ERROR( 1237 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 1238 FileRemover Cleanup(TempPath); 1239 1240 // Make sure it exists. 1241 ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); 1242 1243 // Open the file for read 1244 int FileDescriptor2; 1245 SmallString<64> ResultPath; 1246 ASSERT_NO_ERROR(fs::openFileForRead(Twine(TempPath), FileDescriptor2, 1247 fs::OF_None, &ResultPath)) 1248 1249 // If we succeeded, check that the paths are the same (modulo case): 1250 if (!ResultPath.empty()) { 1251 // The paths returned by createTemporaryFile and getPathFromOpenFD 1252 // should reference the same file on disk. 1253 fs::UniqueID D1, D2; 1254 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), D1)); 1255 ASSERT_NO_ERROR(fs::getUniqueID(Twine(ResultPath), D2)); 1256 ASSERT_EQ(D1, D2); 1257 } 1258 ::close(FileDescriptor); 1259 ::close(FileDescriptor2); 1260 1261 #ifdef _WIN32 1262 // Since Windows Vista, file access time is not updated by default. 1263 // This is instead updated manually by openFileForRead. 1264 // https://blogs.technet.microsoft.com/filecab/2006/11/07/disabling-last-access-time-in-windows-vista-to-improve-ntfs-performance/ 1265 // This part of the unit test is Windows specific as the updating of 1266 // access times can be disabled on Linux using /etc/fstab. 1267 1268 // Set access time to UNIX epoch. 1269 ASSERT_NO_ERROR(sys::fs::openFileForWrite(Twine(TempPath), FileDescriptor, 1270 fs::CD_OpenExisting)); 1271 TimePoint<> Epoch(std::chrono::milliseconds(0)); 1272 ASSERT_NO_ERROR(fs::setLastAccessAndModificationTime(FileDescriptor, Epoch)); 1273 ::close(FileDescriptor); 1274 1275 // Open the file and ensure access time is updated, when forced. 1276 ASSERT_NO_ERROR(fs::openFileForRead(Twine(TempPath), FileDescriptor, 1277 fs::OF_UpdateAtime, &ResultPath)); 1278 1279 sys::fs::file_status Status; 1280 ASSERT_NO_ERROR(sys::fs::status(FileDescriptor, Status)); 1281 auto FileAccessTime = Status.getLastAccessedTime(); 1282 1283 ASSERT_NE(Epoch, FileAccessTime); 1284 ::close(FileDescriptor); 1285 1286 // Ideally this test would include a case when ATime is not forced to update, 1287 // however the expected behaviour will differ depending on the configuration 1288 // of the Windows file system. 1289 #endif 1290 } 1291 1292 static void createFileWithData(const Twine &Path, bool ShouldExistBefore, 1293 fs::CreationDisposition Disp, StringRef Data) { 1294 int FD; 1295 ASSERT_EQ(ShouldExistBefore, fs::exists(Path)); 1296 ASSERT_NO_ERROR(fs::openFileForWrite(Path, FD, Disp)); 1297 FileDescriptorCloser Closer(FD); 1298 ASSERT_TRUE(fs::exists(Path)); 1299 1300 ASSERT_EQ(Data.size(), (size_t)write(FD, Data.data(), Data.size())); 1301 } 1302 1303 static void verifyFileContents(const Twine &Path, StringRef Contents) { 1304 auto Buffer = MemoryBuffer::getFile(Path); 1305 ASSERT_TRUE((bool)Buffer); 1306 StringRef Data = Buffer.get()->getBuffer(); 1307 ASSERT_EQ(Data, Contents); 1308 } 1309 1310 TEST_F(FileSystemTest, CreateNew) { 1311 int FD; 1312 Optional<FileDescriptorCloser> Closer; 1313 1314 // Succeeds if the file does not exist. 1315 ASSERT_FALSE(fs::exists(NonExistantFile)); 1316 ASSERT_NO_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateNew)); 1317 ASSERT_TRUE(fs::exists(NonExistantFile)); 1318 1319 FileRemover Cleanup(NonExistantFile); 1320 Closer.emplace(FD); 1321 1322 // And creates a file of size 0. 1323 sys::fs::file_status Status; 1324 ASSERT_NO_ERROR(sys::fs::status(FD, Status)); 1325 EXPECT_EQ(0ULL, Status.getSize()); 1326 1327 // Close this first, before trying to re-open the file. 1328 Closer.reset(); 1329 1330 // But fails if the file does exist. 1331 ASSERT_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateNew)); 1332 } 1333 1334 TEST_F(FileSystemTest, CreateAlways) { 1335 int FD; 1336 Optional<FileDescriptorCloser> Closer; 1337 1338 // Succeeds if the file does not exist. 1339 ASSERT_FALSE(fs::exists(NonExistantFile)); 1340 ASSERT_NO_ERROR( 1341 fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateAlways)); 1342 1343 Closer.emplace(FD); 1344 1345 ASSERT_TRUE(fs::exists(NonExistantFile)); 1346 1347 FileRemover Cleanup(NonExistantFile); 1348 1349 // And creates a file of size 0. 1350 uint64_t FileSize; 1351 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1352 ASSERT_EQ(0ULL, FileSize); 1353 1354 // If we write some data to it re-create it with CreateAlways, it succeeds and 1355 // truncates to 0 bytes. 1356 ASSERT_EQ(4, write(FD, "Test", 4)); 1357 1358 Closer.reset(); 1359 1360 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1361 ASSERT_EQ(4ULL, FileSize); 1362 1363 ASSERT_NO_ERROR( 1364 fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateAlways)); 1365 Closer.emplace(FD); 1366 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1367 ASSERT_EQ(0ULL, FileSize); 1368 } 1369 1370 TEST_F(FileSystemTest, OpenExisting) { 1371 int FD; 1372 1373 // Fails if the file does not exist. 1374 ASSERT_FALSE(fs::exists(NonExistantFile)); 1375 ASSERT_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_OpenExisting)); 1376 ASSERT_FALSE(fs::exists(NonExistantFile)); 1377 1378 // Make a dummy file now so that we can try again when the file does exist. 1379 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1380 FileRemover Cleanup(NonExistantFile); 1381 uint64_t FileSize; 1382 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1383 ASSERT_EQ(4ULL, FileSize); 1384 1385 // If we re-create it with different data, it overwrites rather than 1386 // appending. 1387 createFileWithData(NonExistantFile, true, fs::CD_OpenExisting, "Buzz"); 1388 verifyFileContents(NonExistantFile, "Buzz"); 1389 } 1390 1391 TEST_F(FileSystemTest, OpenAlways) { 1392 // Succeeds if the file does not exist. 1393 createFileWithData(NonExistantFile, false, fs::CD_OpenAlways, "Fizz"); 1394 FileRemover Cleanup(NonExistantFile); 1395 uint64_t FileSize; 1396 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1397 ASSERT_EQ(4ULL, FileSize); 1398 1399 // Now re-open it and write again, verifying the contents get over-written. 1400 createFileWithData(NonExistantFile, true, fs::CD_OpenAlways, "Bu"); 1401 verifyFileContents(NonExistantFile, "Buzz"); 1402 } 1403 1404 TEST_F(FileSystemTest, AppendSetsCorrectFileOffset) { 1405 fs::CreationDisposition Disps[] = {fs::CD_CreateAlways, fs::CD_OpenAlways, 1406 fs::CD_OpenExisting}; 1407 1408 // Write some data and re-open it with every possible disposition (this is a 1409 // hack that shouldn't work, but is left for compatibility. F_Append 1410 // overrides 1411 // the specified disposition. 1412 for (fs::CreationDisposition Disp : Disps) { 1413 int FD; 1414 Optional<FileDescriptorCloser> Closer; 1415 1416 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1417 1418 FileRemover Cleanup(NonExistantFile); 1419 1420 uint64_t FileSize; 1421 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1422 ASSERT_EQ(4ULL, FileSize); 1423 ASSERT_NO_ERROR( 1424 fs::openFileForWrite(NonExistantFile, FD, Disp, fs::OF_Append)); 1425 Closer.emplace(FD); 1426 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1427 ASSERT_EQ(4ULL, FileSize); 1428 1429 ASSERT_EQ(4, write(FD, "Buzz", 4)); 1430 Closer.reset(); 1431 1432 verifyFileContents(NonExistantFile, "FizzBuzz"); 1433 } 1434 } 1435 1436 static void verifyRead(int FD, StringRef Data, bool ShouldSucceed) { 1437 std::vector<char> Buffer; 1438 Buffer.resize(Data.size()); 1439 int Result = ::read(FD, Buffer.data(), Buffer.size()); 1440 if (ShouldSucceed) { 1441 ASSERT_EQ((size_t)Result, Data.size()); 1442 ASSERT_EQ(Data, StringRef(Buffer.data(), Buffer.size())); 1443 } else { 1444 ASSERT_EQ(-1, Result); 1445 ASSERT_EQ(EBADF, errno); 1446 } 1447 } 1448 1449 static void verifyWrite(int FD, StringRef Data, bool ShouldSucceed) { 1450 int Result = ::write(FD, Data.data(), Data.size()); 1451 if (ShouldSucceed) 1452 ASSERT_EQ((size_t)Result, Data.size()); 1453 else { 1454 ASSERT_EQ(-1, Result); 1455 ASSERT_EQ(EBADF, errno); 1456 } 1457 } 1458 1459 TEST_F(FileSystemTest, ReadOnlyFileCantWrite) { 1460 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1461 FileRemover Cleanup(NonExistantFile); 1462 1463 int FD; 1464 ASSERT_NO_ERROR(fs::openFileForRead(NonExistantFile, FD)); 1465 FileDescriptorCloser Closer(FD); 1466 1467 verifyWrite(FD, "Buzz", false); 1468 verifyRead(FD, "Fizz", true); 1469 } 1470 1471 TEST_F(FileSystemTest, WriteOnlyFileCantRead) { 1472 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1473 FileRemover Cleanup(NonExistantFile); 1474 1475 int FD; 1476 ASSERT_NO_ERROR( 1477 fs::openFileForWrite(NonExistantFile, FD, fs::CD_OpenExisting)); 1478 FileDescriptorCloser Closer(FD); 1479 verifyRead(FD, "Fizz", false); 1480 verifyWrite(FD, "Buzz", true); 1481 } 1482 1483 TEST_F(FileSystemTest, ReadWriteFileCanReadOrWrite) { 1484 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1485 FileRemover Cleanup(NonExistantFile); 1486 1487 int FD; 1488 ASSERT_NO_ERROR(fs::openFileForReadWrite(NonExistantFile, FD, 1489 fs::CD_OpenExisting, fs::OF_None)); 1490 FileDescriptorCloser Closer(FD); 1491 verifyRead(FD, "Fizz", true); 1492 verifyWrite(FD, "Buzz", true); 1493 } 1494 1495 TEST_F(FileSystemTest, is_local) { 1496 bool TestDirectoryIsLocal; 1497 ASSERT_NO_ERROR(fs::is_local(TestDirectory, TestDirectoryIsLocal)); 1498 EXPECT_EQ(TestDirectoryIsLocal, fs::is_local(TestDirectory)); 1499 1500 int FD; 1501 SmallString<128> TempPath; 1502 ASSERT_NO_ERROR( 1503 fs::createUniqueFile(Twine(TestDirectory) + "/temp", FD, TempPath)); 1504 FileRemover Cleanup(TempPath); 1505 1506 // Make sure it exists. 1507 ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); 1508 1509 bool TempFileIsLocal; 1510 ASSERT_NO_ERROR(fs::is_local(FD, TempFileIsLocal)); 1511 EXPECT_EQ(TempFileIsLocal, fs::is_local(FD)); 1512 1513 // Expect that the file and its parent directory are equally local or equally 1514 // remote. 1515 EXPECT_EQ(TestDirectoryIsLocal, TempFileIsLocal); 1516 } 1517 1518 TEST_F(FileSystemTest, set_current_path) { 1519 SmallString<128> path; 1520 1521 ASSERT_NO_ERROR(fs::current_path(path)); 1522 ASSERT_NE(TestDirectory, path); 1523 1524 struct RestorePath { 1525 SmallString<128> path; 1526 RestorePath(const SmallString<128> &path) : path(path) {} 1527 ~RestorePath() { fs::set_current_path(path); } 1528 } restore_path(path); 1529 1530 ASSERT_NO_ERROR(fs::set_current_path(TestDirectory)); 1531 1532 ASSERT_NO_ERROR(fs::current_path(path)); 1533 1534 fs::UniqueID D1, D2; 1535 ASSERT_NO_ERROR(fs::getUniqueID(TestDirectory, D1)); 1536 ASSERT_NO_ERROR(fs::getUniqueID(path, D2)); 1537 ASSERT_EQ(D1, D2) << "D1: " << TestDirectory << "\nD2: " << path; 1538 } 1539 1540 TEST_F(FileSystemTest, permissions) { 1541 int FD; 1542 SmallString<64> TempPath; 1543 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1544 FileRemover Cleanup(TempPath); 1545 1546 // Make sure it exists. 1547 ASSERT_TRUE(fs::exists(Twine(TempPath))); 1548 1549 auto CheckPermissions = [&](fs::perms Expected) { 1550 ErrorOr<fs::perms> Actual = fs::getPermissions(TempPath); 1551 return Actual && *Actual == Expected; 1552 }; 1553 1554 std::error_code NoError; 1555 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_all), NoError); 1556 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1557 1558 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read | fs::all_exe), NoError); 1559 EXPECT_TRUE(CheckPermissions(fs::all_read | fs::all_exe)); 1560 1561 #if defined(_WIN32) 1562 fs::perms ReadOnly = fs::all_read | fs::all_exe; 1563 EXPECT_EQ(fs::setPermissions(TempPath, fs::no_perms), NoError); 1564 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1565 1566 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_read), NoError); 1567 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1568 1569 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_write), NoError); 1570 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1571 1572 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_exe), NoError); 1573 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1574 1575 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_all), NoError); 1576 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1577 1578 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_read), NoError); 1579 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1580 1581 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_write), NoError); 1582 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1583 1584 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_exe), NoError); 1585 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1586 1587 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_all), NoError); 1588 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1589 1590 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_read), NoError); 1591 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1592 1593 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_write), NoError); 1594 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1595 1596 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_exe), NoError); 1597 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1598 1599 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_all), NoError); 1600 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1601 1602 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read), NoError); 1603 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1604 1605 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_write), NoError); 1606 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1607 1608 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_exe), NoError); 1609 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1610 1611 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe), NoError); 1612 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1613 1614 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_gid_on_exe), NoError); 1615 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1616 1617 EXPECT_EQ(fs::setPermissions(TempPath, fs::sticky_bit), NoError); 1618 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1619 1620 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe | 1621 fs::set_gid_on_exe | 1622 fs::sticky_bit), 1623 NoError); 1624 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1625 1626 EXPECT_EQ(fs::setPermissions(TempPath, ReadOnly | fs::set_uid_on_exe | 1627 fs::set_gid_on_exe | 1628 fs::sticky_bit), 1629 NoError); 1630 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1631 1632 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms), NoError); 1633 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1634 #else 1635 EXPECT_EQ(fs::setPermissions(TempPath, fs::no_perms), NoError); 1636 EXPECT_TRUE(CheckPermissions(fs::no_perms)); 1637 1638 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_read), NoError); 1639 EXPECT_TRUE(CheckPermissions(fs::owner_read)); 1640 1641 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_write), NoError); 1642 EXPECT_TRUE(CheckPermissions(fs::owner_write)); 1643 1644 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_exe), NoError); 1645 EXPECT_TRUE(CheckPermissions(fs::owner_exe)); 1646 1647 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_all), NoError); 1648 EXPECT_TRUE(CheckPermissions(fs::owner_all)); 1649 1650 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_read), NoError); 1651 EXPECT_TRUE(CheckPermissions(fs::group_read)); 1652 1653 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_write), NoError); 1654 EXPECT_TRUE(CheckPermissions(fs::group_write)); 1655 1656 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_exe), NoError); 1657 EXPECT_TRUE(CheckPermissions(fs::group_exe)); 1658 1659 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_all), NoError); 1660 EXPECT_TRUE(CheckPermissions(fs::group_all)); 1661 1662 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_read), NoError); 1663 EXPECT_TRUE(CheckPermissions(fs::others_read)); 1664 1665 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_write), NoError); 1666 EXPECT_TRUE(CheckPermissions(fs::others_write)); 1667 1668 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_exe), NoError); 1669 EXPECT_TRUE(CheckPermissions(fs::others_exe)); 1670 1671 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_all), NoError); 1672 EXPECT_TRUE(CheckPermissions(fs::others_all)); 1673 1674 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read), NoError); 1675 EXPECT_TRUE(CheckPermissions(fs::all_read)); 1676 1677 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_write), NoError); 1678 EXPECT_TRUE(CheckPermissions(fs::all_write)); 1679 1680 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_exe), NoError); 1681 EXPECT_TRUE(CheckPermissions(fs::all_exe)); 1682 1683 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe), NoError); 1684 EXPECT_TRUE(CheckPermissions(fs::set_uid_on_exe)); 1685 1686 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_gid_on_exe), NoError); 1687 EXPECT_TRUE(CheckPermissions(fs::set_gid_on_exe)); 1688 1689 // Modern BSDs require root to set the sticky bit on files. 1690 // AIX without root will mask off (i.e., lose) the sticky bit on files. 1691 #if !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && \ 1692 !defined(_AIX) 1693 EXPECT_EQ(fs::setPermissions(TempPath, fs::sticky_bit), NoError); 1694 EXPECT_TRUE(CheckPermissions(fs::sticky_bit)); 1695 1696 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe | 1697 fs::set_gid_on_exe | 1698 fs::sticky_bit), 1699 NoError); 1700 EXPECT_TRUE(CheckPermissions(fs::set_uid_on_exe | fs::set_gid_on_exe | 1701 fs::sticky_bit)); 1702 1703 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read | fs::set_uid_on_exe | 1704 fs::set_gid_on_exe | 1705 fs::sticky_bit), 1706 NoError); 1707 EXPECT_TRUE(CheckPermissions(fs::all_read | fs::set_uid_on_exe | 1708 fs::set_gid_on_exe | fs::sticky_bit)); 1709 1710 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms), NoError); 1711 EXPECT_TRUE(CheckPermissions(fs::all_perms)); 1712 #endif // !FreeBSD && !NetBSD && !OpenBSD && !AIX 1713 1714 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms & ~fs::sticky_bit), 1715 NoError); 1716 EXPECT_TRUE(CheckPermissions(fs::all_perms & ~fs::sticky_bit)); 1717 #endif 1718 } 1719 1720 } // anonymous namespace 1721