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/ScopeExit.h" 12 #include "llvm/ADT/SmallVector.h" 13 #include "llvm/ADT/Triple.h" 14 #include "llvm/BinaryFormat/Magic.h" 15 #include "llvm/Config/llvm-config.h" 16 #include "llvm/Support/Compiler.h" 17 #include "llvm/Support/ConvertUTF.h" 18 #include "llvm/Support/Errc.h" 19 #include "llvm/Support/ErrorHandling.h" 20 #include "llvm/Support/FileSystem.h" 21 #include "llvm/Support/FileUtilities.h" 22 #include "llvm/Support/Host.h" 23 #include "llvm/Support/MemoryBuffer.h" 24 #include "llvm/Support/raw_ostream.h" 25 #include "llvm/Testing/Support/Error.h" 26 #include "gmock/gmock.h" 27 #include "gtest/gtest.h" 28 29 #ifdef _WIN32 30 #include "llvm/ADT/ArrayRef.h" 31 #include "llvm/Support/Chrono.h" 32 #include "llvm/Support/Windows/WindowsSupport.h" 33 #include <windows.h> 34 #include <winerror.h> 35 #endif 36 37 #ifdef LLVM_ON_UNIX 38 #include <pwd.h> 39 #include <sys/stat.h> 40 #endif 41 42 using namespace llvm; 43 using namespace llvm::sys; 44 45 #define ASSERT_NO_ERROR(x) \ 46 if (std::error_code ASSERT_NO_ERROR_ec = x) { \ 47 SmallString<128> MessageStorage; \ 48 raw_svector_ostream Message(MessageStorage); \ 49 Message << #x ": did not return errc::success.\n" \ 50 << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \ 51 << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \ 52 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ 53 } else { \ 54 } 55 56 #define ASSERT_ERROR(x) \ 57 if (!x) { \ 58 SmallString<128> MessageStorage; \ 59 raw_svector_ostream Message(MessageStorage); \ 60 Message << #x ": did not return a failure error code.\n"; \ 61 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ 62 } 63 64 namespace { 65 66 struct FileDescriptorCloser { 67 explicit FileDescriptorCloser(int FD) : FD(FD) {} 68 ~FileDescriptorCloser() { ::close(FD); } 69 int FD; 70 }; 71 72 TEST(is_separator, Works) { 73 EXPECT_TRUE(path::is_separator('/')); 74 EXPECT_FALSE(path::is_separator('\0')); 75 EXPECT_FALSE(path::is_separator('-')); 76 EXPECT_FALSE(path::is_separator(' ')); 77 78 EXPECT_TRUE(path::is_separator('\\', path::Style::windows)); 79 EXPECT_FALSE(path::is_separator('\\', path::Style::posix)); 80 81 #ifdef _WIN32 82 EXPECT_TRUE(path::is_separator('\\')); 83 #else 84 EXPECT_FALSE(path::is_separator('\\')); 85 #endif 86 } 87 88 TEST(Support, Path) { 89 SmallVector<StringRef, 40> paths; 90 paths.push_back(""); 91 paths.push_back("."); 92 paths.push_back(".."); 93 paths.push_back("foo"); 94 paths.push_back("/"); 95 paths.push_back("/foo"); 96 paths.push_back("foo/"); 97 paths.push_back("/foo/"); 98 paths.push_back("foo/bar"); 99 paths.push_back("/foo/bar"); 100 paths.push_back("//net"); 101 paths.push_back("//net/"); 102 paths.push_back("//net/foo"); 103 paths.push_back("///foo///"); 104 paths.push_back("///foo///bar"); 105 paths.push_back("/."); 106 paths.push_back("./"); 107 paths.push_back("/.."); 108 paths.push_back("../"); 109 paths.push_back("foo/."); 110 paths.push_back("foo/.."); 111 paths.push_back("foo/./"); 112 paths.push_back("foo/./bar"); 113 paths.push_back("foo/.."); 114 paths.push_back("foo/../"); 115 paths.push_back("foo/../bar"); 116 paths.push_back("c:"); 117 paths.push_back("c:/"); 118 paths.push_back("c:foo"); 119 paths.push_back("c:/foo"); 120 paths.push_back("c:foo/"); 121 paths.push_back("c:/foo/"); 122 paths.push_back("c:/foo/bar"); 123 paths.push_back("prn:"); 124 paths.push_back("c:\\"); 125 paths.push_back("c:foo"); 126 paths.push_back("c:\\foo"); 127 paths.push_back("c:foo\\"); 128 paths.push_back("c:\\foo\\"); 129 paths.push_back("c:\\foo/"); 130 paths.push_back("c:/foo\\bar"); 131 132 for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(), 133 e = paths.end(); 134 i != e; 135 ++i) { 136 SCOPED_TRACE(*i); 137 SmallVector<StringRef, 5> ComponentStack; 138 for (sys::path::const_iterator ci = sys::path::begin(*i), 139 ce = sys::path::end(*i); 140 ci != ce; 141 ++ci) { 142 EXPECT_FALSE(ci->empty()); 143 ComponentStack.push_back(*ci); 144 } 145 146 SmallVector<StringRef, 5> ReverseComponentStack; 147 for (sys::path::reverse_iterator ci = sys::path::rbegin(*i), 148 ce = sys::path::rend(*i); 149 ci != ce; 150 ++ci) { 151 EXPECT_FALSE(ci->empty()); 152 ReverseComponentStack.push_back(*ci); 153 } 154 std::reverse(ReverseComponentStack.begin(), ReverseComponentStack.end()); 155 EXPECT_THAT(ComponentStack, testing::ContainerEq(ReverseComponentStack)); 156 157 // Crash test most of the API - since we're iterating over all of our paths 158 // here there isn't really anything reasonable to assert on in the results. 159 (void)path::has_root_path(*i); 160 (void)path::root_path(*i); 161 (void)path::has_root_name(*i); 162 (void)path::root_name(*i); 163 (void)path::has_root_directory(*i); 164 (void)path::root_directory(*i); 165 (void)path::has_parent_path(*i); 166 (void)path::parent_path(*i); 167 (void)path::has_filename(*i); 168 (void)path::filename(*i); 169 (void)path::has_stem(*i); 170 (void)path::stem(*i); 171 (void)path::has_extension(*i); 172 (void)path::extension(*i); 173 (void)path::is_absolute(*i); 174 (void)path::is_relative(*i); 175 176 SmallString<128> temp_store; 177 temp_store = *i; 178 ASSERT_NO_ERROR(fs::make_absolute(temp_store)); 179 temp_store = *i; 180 path::remove_filename(temp_store); 181 182 temp_store = *i; 183 path::replace_extension(temp_store, "ext"); 184 StringRef filename(temp_store.begin(), temp_store.size()), stem, ext; 185 stem = path::stem(filename); 186 ext = path::extension(filename); 187 EXPECT_EQ(*sys::path::rbegin(filename), (stem + ext).str()); 188 189 path::native(*i, temp_store); 190 } 191 192 { 193 SmallString<32> Relative("foo.cpp"); 194 sys::fs::make_absolute("/root", Relative); 195 Relative[5] = '/'; // Fix up windows paths. 196 ASSERT_EQ("/root/foo.cpp", Relative); 197 } 198 199 { 200 SmallString<32> Relative("foo.cpp"); 201 sys::fs::make_absolute("//root", Relative); 202 Relative[6] = '/'; // Fix up windows paths. 203 ASSERT_EQ("//root/foo.cpp", Relative); 204 } 205 } 206 207 TEST(Support, PathRoot) { 208 ASSERT_EQ(path::root_name("//net/hello", path::Style::posix).str(), "//net"); 209 ASSERT_EQ(path::root_name("c:/hello", path::Style::posix).str(), ""); 210 ASSERT_EQ(path::root_name("c:/hello", path::Style::windows).str(), "c:"); 211 ASSERT_EQ(path::root_name("/hello", path::Style::posix).str(), ""); 212 213 ASSERT_EQ(path::root_directory("/goo/hello", path::Style::posix).str(), "/"); 214 ASSERT_EQ(path::root_directory("c:/hello", path::Style::windows).str(), "/"); 215 ASSERT_EQ(path::root_directory("d/file.txt", path::Style::posix).str(), ""); 216 ASSERT_EQ(path::root_directory("d/file.txt", path::Style::windows).str(), ""); 217 218 SmallVector<StringRef, 40> paths; 219 paths.push_back(""); 220 paths.push_back("."); 221 paths.push_back(".."); 222 paths.push_back("foo"); 223 paths.push_back("/"); 224 paths.push_back("/foo"); 225 paths.push_back("foo/"); 226 paths.push_back("/foo/"); 227 paths.push_back("foo/bar"); 228 paths.push_back("/foo/bar"); 229 paths.push_back("//net"); 230 paths.push_back("//net/"); 231 paths.push_back("//net/foo"); 232 paths.push_back("///foo///"); 233 paths.push_back("///foo///bar"); 234 paths.push_back("/."); 235 paths.push_back("./"); 236 paths.push_back("/.."); 237 paths.push_back("../"); 238 paths.push_back("foo/."); 239 paths.push_back("foo/.."); 240 paths.push_back("foo/./"); 241 paths.push_back("foo/./bar"); 242 paths.push_back("foo/.."); 243 paths.push_back("foo/../"); 244 paths.push_back("foo/../bar"); 245 paths.push_back("c:"); 246 paths.push_back("c:/"); 247 paths.push_back("c:foo"); 248 paths.push_back("c:/foo"); 249 paths.push_back("c:foo/"); 250 paths.push_back("c:/foo/"); 251 paths.push_back("c:/foo/bar"); 252 paths.push_back("prn:"); 253 paths.push_back("c:\\"); 254 paths.push_back("c:foo"); 255 paths.push_back("c:\\foo"); 256 paths.push_back("c:foo\\"); 257 paths.push_back("c:\\foo\\"); 258 paths.push_back("c:\\foo/"); 259 paths.push_back("c:/foo\\bar"); 260 261 for (StringRef p : paths) { 262 ASSERT_EQ( 263 path::root_name(p, path::Style::posix).str() + path::root_directory(p, path::Style::posix).str(), 264 path::root_path(p, path::Style::posix).str()); 265 266 ASSERT_EQ( 267 path::root_name(p, path::Style::windows).str() + path::root_directory(p, path::Style::windows).str(), 268 path::root_path(p, path::Style::windows).str()); 269 } 270 } 271 272 TEST(Support, FilenameParent) { 273 EXPECT_EQ("/", path::filename("/")); 274 EXPECT_EQ("", path::parent_path("/")); 275 276 EXPECT_EQ("\\", path::filename("c:\\", path::Style::windows)); 277 EXPECT_EQ("c:", path::parent_path("c:\\", path::Style::windows)); 278 279 EXPECT_EQ("/", path::filename("///")); 280 EXPECT_EQ("", path::parent_path("///")); 281 282 EXPECT_EQ("\\", path::filename("c:\\\\", path::Style::windows)); 283 EXPECT_EQ("c:", path::parent_path("c:\\\\", path::Style::windows)); 284 285 EXPECT_EQ("bar", path::filename("/foo/bar")); 286 EXPECT_EQ("/foo", path::parent_path("/foo/bar")); 287 288 EXPECT_EQ("foo", path::filename("/foo")); 289 EXPECT_EQ("/", path::parent_path("/foo")); 290 291 EXPECT_EQ("foo", path::filename("foo")); 292 EXPECT_EQ("", path::parent_path("foo")); 293 294 EXPECT_EQ(".", path::filename("foo/")); 295 EXPECT_EQ("foo", path::parent_path("foo/")); 296 297 EXPECT_EQ("//net", path::filename("//net")); 298 EXPECT_EQ("", path::parent_path("//net")); 299 300 EXPECT_EQ("/", path::filename("//net/")); 301 EXPECT_EQ("//net", path::parent_path("//net/")); 302 303 EXPECT_EQ("foo", path::filename("//net/foo")); 304 EXPECT_EQ("//net/", path::parent_path("//net/foo")); 305 306 // These checks are just to make sure we do something reasonable with the 307 // paths below. They are not meant to prescribe the one true interpretation of 308 // these paths. Other decompositions (e.g. "//" -> "" + "//") are also 309 // possible. 310 EXPECT_EQ("/", path::filename("//")); 311 EXPECT_EQ("", path::parent_path("//")); 312 313 EXPECT_EQ("\\", path::filename("\\\\", path::Style::windows)); 314 EXPECT_EQ("", path::parent_path("\\\\", path::Style::windows)); 315 316 EXPECT_EQ("\\", path::filename("\\\\\\", path::Style::windows)); 317 EXPECT_EQ("", path::parent_path("\\\\\\", path::Style::windows)); 318 } 319 320 static std::vector<StringRef> 321 GetComponents(StringRef Path, path::Style S = path::Style::native) { 322 return {path::begin(Path, S), path::end(Path)}; 323 } 324 325 TEST(Support, PathIterator) { 326 EXPECT_THAT(GetComponents("/foo"), testing::ElementsAre("/", "foo")); 327 EXPECT_THAT(GetComponents("/"), testing::ElementsAre("/")); 328 EXPECT_THAT(GetComponents("//"), testing::ElementsAre("/")); 329 EXPECT_THAT(GetComponents("///"), testing::ElementsAre("/")); 330 EXPECT_THAT(GetComponents("c/d/e/foo.txt"), 331 testing::ElementsAre("c", "d", "e", "foo.txt")); 332 EXPECT_THAT(GetComponents(".c/.d/../."), 333 testing::ElementsAre(".c", ".d", "..", ".")); 334 EXPECT_THAT(GetComponents("/c/d/e/foo.txt"), 335 testing::ElementsAre("/", "c", "d", "e", "foo.txt")); 336 EXPECT_THAT(GetComponents("/.c/.d/../."), 337 testing::ElementsAre("/", ".c", ".d", "..", ".")); 338 EXPECT_THAT(GetComponents("c:\\c\\e\\foo.txt", path::Style::windows), 339 testing::ElementsAre("c:", "\\", "c", "e", "foo.txt")); 340 EXPECT_THAT(GetComponents("//net/"), testing::ElementsAre("//net", "/")); 341 EXPECT_THAT(GetComponents("//net/c/foo.txt"), 342 testing::ElementsAre("//net", "/", "c", "foo.txt")); 343 } 344 345 TEST(Support, AbsolutePathIteratorEnd) { 346 // Trailing slashes are converted to '.' unless they are part of the root path. 347 SmallVector<std::pair<StringRef, path::Style>, 4> Paths; 348 Paths.emplace_back("/foo/", path::Style::native); 349 Paths.emplace_back("/foo//", path::Style::native); 350 Paths.emplace_back("//net/foo/", path::Style::native); 351 Paths.emplace_back("c:\\foo\\", path::Style::windows); 352 353 for (auto &Path : Paths) { 354 SCOPED_TRACE(Path.first); 355 StringRef LastComponent = *path::rbegin(Path.first, Path.second); 356 EXPECT_EQ(".", LastComponent); 357 } 358 359 SmallVector<std::pair<StringRef, path::Style>, 3> RootPaths; 360 RootPaths.emplace_back("/", path::Style::native); 361 RootPaths.emplace_back("//net/", path::Style::native); 362 RootPaths.emplace_back("c:\\", path::Style::windows); 363 RootPaths.emplace_back("//net//", path::Style::native); 364 RootPaths.emplace_back("c:\\\\", path::Style::windows); 365 366 for (auto &Path : RootPaths) { 367 SCOPED_TRACE(Path.first); 368 StringRef LastComponent = *path::rbegin(Path.first, Path.second); 369 EXPECT_EQ(1u, LastComponent.size()); 370 EXPECT_TRUE(path::is_separator(LastComponent[0], Path.second)); 371 } 372 } 373 374 #ifdef _WIN32 375 std::string getEnvWin(const wchar_t *Var) { 376 std::string expected; 377 if (wchar_t const *path = ::_wgetenv(Var)) { 378 auto pathLen = ::wcslen(path); 379 ArrayRef<char> ref{reinterpret_cast<char const *>(path), 380 pathLen * sizeof(wchar_t)}; 381 convertUTF16ToUTF8String(ref, expected); 382 } 383 return expected; 384 } 385 #else 386 // RAII helper to set and restore an environment variable. 387 class WithEnv { 388 const char *Var; 389 llvm::Optional<std::string> OriginalValue; 390 391 public: 392 WithEnv(const char *Var, const char *Value) : Var(Var) { 393 if (const char *V = ::getenv(Var)) 394 OriginalValue.emplace(V); 395 if (Value) 396 ::setenv(Var, Value, 1); 397 else 398 ::unsetenv(Var); 399 } 400 ~WithEnv() { 401 if (OriginalValue) 402 ::setenv(Var, OriginalValue->c_str(), 1); 403 else 404 ::unsetenv(Var); 405 } 406 }; 407 #endif 408 409 TEST(Support, HomeDirectory) { 410 std::string expected; 411 #ifdef _WIN32 412 expected = getEnvWin(L"USERPROFILE"); 413 #else 414 if (char const *path = ::getenv("HOME")) 415 expected = path; 416 #endif 417 // Do not try to test it if we don't know what to expect. 418 // On Windows we use something better than env vars. 419 if (!expected.empty()) { 420 SmallString<128> HomeDir; 421 auto status = path::home_directory(HomeDir); 422 EXPECT_TRUE(status); 423 EXPECT_EQ(expected, HomeDir); 424 } 425 } 426 427 // Apple has their own solution for this. 428 #if defined(LLVM_ON_UNIX) && !defined(__APPLE__) 429 TEST(Support, HomeDirectoryWithNoEnv) { 430 WithEnv Env("HOME", nullptr); 431 432 // Don't run the test if we have nothing to compare against. 433 struct passwd *pw = getpwuid(getuid()); 434 if (!pw || !pw->pw_dir) return; 435 std::string PwDir = pw->pw_dir; 436 437 SmallString<128> HomeDir; 438 EXPECT_TRUE(path::home_directory(HomeDir)); 439 EXPECT_EQ(PwDir, HomeDir); 440 } 441 442 TEST(Support, CacheDirectoryWithEnv) { 443 WithEnv Env("XDG_CACHE_HOME", "/xdg/cache"); 444 445 SmallString<128> CacheDir; 446 EXPECT_TRUE(path::cache_directory(CacheDir)); 447 EXPECT_EQ("/xdg/cache", CacheDir); 448 } 449 450 TEST(Support, CacheDirectoryNoEnv) { 451 WithEnv Env("XDG_CACHE_HOME", nullptr); 452 453 SmallString<128> Fallback; 454 ASSERT_TRUE(path::home_directory(Fallback)); 455 path::append(Fallback, ".cache"); 456 457 SmallString<128> CacheDir; 458 EXPECT_TRUE(path::cache_directory(CacheDir)); 459 EXPECT_EQ(Fallback, CacheDir); 460 } 461 #endif 462 463 #ifdef _WIN32 464 TEST(Support, CacheDirectory) { 465 std::string Expected = getEnvWin(L"LOCALAPPDATA"); 466 // Do not try to test it if we don't know what to expect. 467 if (!Expected.empty()) { 468 SmallString<128> CacheDir; 469 EXPECT_TRUE(path::cache_directory(CacheDir)); 470 EXPECT_EQ(Expected, CacheDir); 471 } 472 } 473 #endif 474 475 TEST(Support, TempDirectory) { 476 SmallString<32> TempDir; 477 path::system_temp_directory(false, TempDir); 478 EXPECT_TRUE(!TempDir.empty()); 479 TempDir.clear(); 480 path::system_temp_directory(true, TempDir); 481 EXPECT_TRUE(!TempDir.empty()); 482 } 483 484 #ifdef _WIN32 485 static std::string path2regex(std::string Path) { 486 size_t Pos = 0; 487 while ((Pos = Path.find('\\', Pos)) != std::string::npos) { 488 Path.replace(Pos, 1, "\\\\"); 489 Pos += 2; 490 } 491 return Path; 492 } 493 494 /// Helper for running temp dir test in separated process. See below. 495 #define EXPECT_TEMP_DIR(prepare, expected) \ 496 EXPECT_EXIT( \ 497 { \ 498 prepare; \ 499 SmallString<300> TempDir; \ 500 path::system_temp_directory(true, TempDir); \ 501 raw_os_ostream(std::cerr) << TempDir; \ 502 std::exit(0); \ 503 }, \ 504 ::testing::ExitedWithCode(0), path2regex(expected)) 505 506 TEST(SupportDeathTest, TempDirectoryOnWindows) { 507 // In this test we want to check how system_temp_directory responds to 508 // different values of specific env vars. To prevent corrupting env vars of 509 // the current process all checks are done in separated processes. 510 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"C:\\OtherFolder"), "C:\\OtherFolder"); 511 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"C:/Unix/Path/Seperators"), 512 "C:\\Unix\\Path\\Seperators"); 513 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"Local Path"), ".+\\Local Path$"); 514 EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"F:\\TrailingSep\\"), "F:\\TrailingSep"); 515 EXPECT_TEMP_DIR( 516 _wputenv_s(L"TMP", L"C:\\2\x03C0r-\x00B5\x00B3\\\x2135\x2080"), 517 "C:\\2\xCF\x80r-\xC2\xB5\xC2\xB3\\\xE2\x84\xB5\xE2\x82\x80"); 518 519 // Test $TMP empty, $TEMP set. 520 EXPECT_TEMP_DIR( 521 { 522 _wputenv_s(L"TMP", L""); 523 _wputenv_s(L"TEMP", L"C:\\Valid\\Path"); 524 }, 525 "C:\\Valid\\Path"); 526 527 // All related env vars empty 528 EXPECT_TEMP_DIR( 529 { 530 _wputenv_s(L"TMP", L""); 531 _wputenv_s(L"TEMP", L""); 532 _wputenv_s(L"USERPROFILE", L""); 533 }, 534 "C:\\Temp"); 535 536 // Test evn var / path with 260 chars. 537 SmallString<270> Expected{"C:\\Temp\\AB\\123456789"}; 538 while (Expected.size() < 260) 539 Expected.append("\\DirNameWith19Charss"); 540 ASSERT_EQ(260U, Expected.size()); 541 EXPECT_TEMP_DIR(_putenv_s("TMP", Expected.c_str()), Expected.c_str()); 542 } 543 #endif 544 545 class FileSystemTest : public testing::Test { 546 protected: 547 /// Unique temporary directory in which all created filesystem entities must 548 /// be placed. It is removed at the end of each test (must be empty). 549 SmallString<128> TestDirectory; 550 SmallString<128> NonExistantFile; 551 552 void SetUp() override { 553 ASSERT_NO_ERROR( 554 fs::createUniqueDirectory("file-system-test", TestDirectory)); 555 // We don't care about this specific file. 556 errs() << "Test Directory: " << TestDirectory << '\n'; 557 errs().flush(); 558 NonExistantFile = TestDirectory; 559 560 // Even though this value is hardcoded, is a 128-bit GUID, so we should be 561 // guaranteed that this file will never exist. 562 sys::path::append(NonExistantFile, "1B28B495C16344CB9822E588CD4C3EF0"); 563 } 564 565 void TearDown() override { ASSERT_NO_ERROR(fs::remove(TestDirectory.str())); } 566 }; 567 568 TEST_F(FileSystemTest, Unique) { 569 // Create a temp file. 570 int FileDescriptor; 571 SmallString<64> TempPath; 572 ASSERT_NO_ERROR( 573 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 574 575 // The same file should return an identical unique id. 576 fs::UniqueID F1, F2; 577 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F1)); 578 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F2)); 579 ASSERT_EQ(F1, F2); 580 581 // Different files should return different unique ids. 582 int FileDescriptor2; 583 SmallString<64> TempPath2; 584 ASSERT_NO_ERROR( 585 fs::createTemporaryFile("prefix", "temp", FileDescriptor2, TempPath2)); 586 587 fs::UniqueID D; 588 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D)); 589 ASSERT_NE(D, F1); 590 ::close(FileDescriptor2); 591 592 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 593 594 // Two paths representing the same file on disk should still provide the 595 // same unique id. We can test this by making a hard link. 596 ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2))); 597 fs::UniqueID D2; 598 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D2)); 599 ASSERT_EQ(D2, F1); 600 601 ::close(FileDescriptor); 602 603 SmallString<128> Dir1; 604 ASSERT_NO_ERROR( 605 fs::createUniqueDirectory("dir1", Dir1)); 606 ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F1)); 607 ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F2)); 608 ASSERT_EQ(F1, F2); 609 610 SmallString<128> Dir2; 611 ASSERT_NO_ERROR( 612 fs::createUniqueDirectory("dir2", Dir2)); 613 ASSERT_NO_ERROR(fs::getUniqueID(Dir2.c_str(), F2)); 614 ASSERT_NE(F1, F2); 615 ASSERT_NO_ERROR(fs::remove(Dir1)); 616 ASSERT_NO_ERROR(fs::remove(Dir2)); 617 ASSERT_NO_ERROR(fs::remove(TempPath2)); 618 ASSERT_NO_ERROR(fs::remove(TempPath)); 619 } 620 621 TEST_F(FileSystemTest, RealPath) { 622 ASSERT_NO_ERROR( 623 fs::create_directories(Twine(TestDirectory) + "/test1/test2/test3")); 624 ASSERT_TRUE(fs::exists(Twine(TestDirectory) + "/test1/test2/test3")); 625 626 SmallString<64> RealBase; 627 SmallString<64> Expected; 628 SmallString<64> Actual; 629 630 // TestDirectory itself might be under a symlink or have been specified with 631 // a different case than the existing temp directory. In such cases real_path 632 // on the concatenated path will differ in the TestDirectory portion from 633 // how we specified it. Make sure to compare against the real_path of the 634 // TestDirectory, and not just the value of TestDirectory. 635 ASSERT_NO_ERROR(fs::real_path(TestDirectory, RealBase)); 636 path::native(Twine(RealBase) + "/test1/test2", Expected); 637 638 ASSERT_NO_ERROR(fs::real_path( 639 Twine(TestDirectory) + "/././test1/../test1/test2/./test3/..", Actual)); 640 641 EXPECT_EQ(Expected, Actual); 642 643 SmallString<64> HomeDir; 644 645 // This can fail if $HOME is not set and getpwuid fails. 646 bool Result = llvm::sys::path::home_directory(HomeDir); 647 if (Result) { 648 ASSERT_NO_ERROR(fs::real_path(HomeDir, Expected)); 649 ASSERT_NO_ERROR(fs::real_path("~", Actual, true)); 650 EXPECT_EQ(Expected, Actual); 651 ASSERT_NO_ERROR(fs::real_path("~/", Actual, true)); 652 EXPECT_EQ(Expected, Actual); 653 } 654 655 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/test1")); 656 } 657 658 TEST_F(FileSystemTest, ExpandTilde) { 659 SmallString<64> Expected; 660 SmallString<64> Actual; 661 SmallString<64> HomeDir; 662 663 // This can fail if $HOME is not set and getpwuid fails. 664 bool Result = llvm::sys::path::home_directory(HomeDir); 665 if (Result) { 666 fs::expand_tilde(HomeDir, Expected); 667 668 fs::expand_tilde("~", Actual); 669 EXPECT_EQ(Expected, Actual); 670 671 #ifdef _WIN32 672 Expected += "\\foo"; 673 fs::expand_tilde("~\\foo", Actual); 674 #else 675 Expected += "/foo"; 676 fs::expand_tilde("~/foo", Actual); 677 #endif 678 679 EXPECT_EQ(Expected, Actual); 680 } 681 } 682 683 #ifdef LLVM_ON_UNIX 684 TEST_F(FileSystemTest, RealPathNoReadPerm) { 685 SmallString<64> Expanded; 686 687 ASSERT_NO_ERROR( 688 fs::create_directories(Twine(TestDirectory) + "/noreadperm")); 689 ASSERT_TRUE(fs::exists(Twine(TestDirectory) + "/noreadperm")); 690 691 fs::setPermissions(Twine(TestDirectory) + "/noreadperm", fs::no_perms); 692 fs::setPermissions(Twine(TestDirectory) + "/noreadperm", fs::all_exe); 693 694 ASSERT_NO_ERROR(fs::real_path(Twine(TestDirectory) + "/noreadperm", Expanded, 695 false)); 696 697 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/noreadperm")); 698 } 699 #endif 700 701 702 TEST_F(FileSystemTest, TempFileKeepDiscard) { 703 // We can keep then discard. 704 auto TempFileOrError = fs::TempFile::create(TestDirectory + "/test-%%%%"); 705 ASSERT_TRUE((bool)TempFileOrError); 706 fs::TempFile File = std::move(*TempFileOrError); 707 ASSERT_EQ(-1, TempFileOrError->FD); 708 ASSERT_FALSE((bool)File.keep(TestDirectory + "/keep")); 709 ASSERT_FALSE((bool)File.discard()); 710 ASSERT_TRUE(fs::exists(TestDirectory + "/keep")); 711 ASSERT_NO_ERROR(fs::remove(TestDirectory + "/keep")); 712 } 713 714 TEST_F(FileSystemTest, TempFileDiscardDiscard) { 715 // We can discard twice. 716 auto TempFileOrError = fs::TempFile::create(TestDirectory + "/test-%%%%"); 717 ASSERT_TRUE((bool)TempFileOrError); 718 fs::TempFile File = std::move(*TempFileOrError); 719 ASSERT_EQ(-1, TempFileOrError->FD); 720 ASSERT_FALSE((bool)File.discard()); 721 ASSERT_FALSE((bool)File.discard()); 722 ASSERT_FALSE(fs::exists(TestDirectory + "/keep")); 723 } 724 725 TEST_F(FileSystemTest, TempFiles) { 726 // Create a temp file. 727 int FileDescriptor; 728 SmallString<64> TempPath; 729 ASSERT_NO_ERROR( 730 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 731 732 // Make sure it exists. 733 ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); 734 735 // Create another temp tile. 736 int FD2; 737 SmallString<64> TempPath2; 738 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD2, TempPath2)); 739 ASSERT_TRUE(TempPath2.endswith(".temp")); 740 ASSERT_NE(TempPath.str(), TempPath2.str()); 741 742 fs::file_status A, B; 743 ASSERT_NO_ERROR(fs::status(Twine(TempPath), A)); 744 ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B)); 745 EXPECT_FALSE(fs::equivalent(A, B)); 746 747 ::close(FD2); 748 749 // Remove Temp2. 750 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 751 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 752 ASSERT_EQ(fs::remove(Twine(TempPath2), false), 753 errc::no_such_file_or_directory); 754 755 std::error_code EC = fs::status(TempPath2.c_str(), B); 756 EXPECT_EQ(EC, errc::no_such_file_or_directory); 757 EXPECT_EQ(B.type(), fs::file_type::file_not_found); 758 759 // Make sure Temp2 doesn't exist. 760 ASSERT_EQ(fs::access(Twine(TempPath2), sys::fs::AccessMode::Exist), 761 errc::no_such_file_or_directory); 762 763 SmallString<64> TempPath3; 764 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "", TempPath3)); 765 ASSERT_FALSE(TempPath3.endswith(".")); 766 FileRemover Cleanup3(TempPath3); 767 768 // Create a hard link to Temp1. 769 ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2))); 770 bool equal; 771 ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal)); 772 EXPECT_TRUE(equal); 773 ASSERT_NO_ERROR(fs::status(Twine(TempPath), A)); 774 ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B)); 775 EXPECT_TRUE(fs::equivalent(A, B)); 776 777 // Remove Temp1. 778 ::close(FileDescriptor); 779 ASSERT_NO_ERROR(fs::remove(Twine(TempPath))); 780 781 // Remove the hard link. 782 ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); 783 784 // Make sure Temp1 doesn't exist. 785 ASSERT_EQ(fs::access(Twine(TempPath), sys::fs::AccessMode::Exist), 786 errc::no_such_file_or_directory); 787 788 #ifdef _WIN32 789 // Path name > 260 chars should get an error. 790 const char *Path270 = 791 "abcdefghijklmnopqrstuvwxyz9abcdefghijklmnopqrstuvwxyz8" 792 "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6" 793 "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4" 794 "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2" 795 "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0"; 796 EXPECT_EQ(fs::createUniqueFile(Path270, FileDescriptor, TempPath), 797 errc::invalid_argument); 798 // Relative path < 247 chars, no problem. 799 const char *Path216 = 800 "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6" 801 "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4" 802 "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2" 803 "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0"; 804 ASSERT_NO_ERROR(fs::createTemporaryFile(Path216, "", TempPath)); 805 ASSERT_NO_ERROR(fs::remove(Twine(TempPath))); 806 #endif 807 } 808 809 TEST_F(FileSystemTest, TempFileCollisions) { 810 SmallString<128> TestDirectory; 811 ASSERT_NO_ERROR( 812 fs::createUniqueDirectory("CreateUniqueFileTest", TestDirectory)); 813 FileRemover Cleanup(TestDirectory); 814 SmallString<128> Model = TestDirectory; 815 path::append(Model, "%.tmp"); 816 SmallString<128> Path; 817 std::vector<fs::TempFile> TempFiles; 818 819 auto TryCreateTempFile = [&]() { 820 Expected<fs::TempFile> T = fs::TempFile::create(Model); 821 if (T) { 822 TempFiles.push_back(std::move(*T)); 823 return true; 824 } else { 825 logAllUnhandledErrors(T.takeError(), errs(), 826 "Failed to create temporary file: "); 827 return false; 828 } 829 }; 830 831 // Our single-character template allows for 16 unique names. Check that 832 // calling TryCreateTempFile repeatedly results in 16 successes. 833 // Because the test depends on random numbers, it could theoretically fail. 834 // However, the probability of this happening is tiny: with 32 calls, each 835 // of which will retry up to 128 times, to not get a given digit we would 836 // have to fail at least 15 + 17 * 128 = 2191 attempts. The probability of 837 // 2191 attempts not producing a given hexadecimal digit is 838 // (1 - 1/16) ** 2191 or 3.88e-62. 839 int Successes = 0; 840 for (int i = 0; i < 32; ++i) 841 if (TryCreateTempFile()) ++Successes; 842 EXPECT_EQ(Successes, 16); 843 844 for (fs::TempFile &T : TempFiles) 845 cantFail(T.discard()); 846 } 847 848 TEST_F(FileSystemTest, CreateDir) { 849 ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo")); 850 ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo")); 851 ASSERT_EQ(fs::create_directory(Twine(TestDirectory) + "foo", false), 852 errc::file_exists); 853 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "foo")); 854 855 #ifdef LLVM_ON_UNIX 856 // Set a 0000 umask so that we can test our directory permissions. 857 mode_t OldUmask = ::umask(0000); 858 859 fs::file_status Status; 860 ASSERT_NO_ERROR( 861 fs::create_directory(Twine(TestDirectory) + "baz500", false, 862 fs::perms::owner_read | fs::perms::owner_exe)); 863 ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz500", Status)); 864 ASSERT_EQ(Status.permissions() & fs::perms::all_all, 865 fs::perms::owner_read | fs::perms::owner_exe); 866 ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "baz777", false, 867 fs::perms::all_all)); 868 ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz777", Status)); 869 ASSERT_EQ(Status.permissions() & fs::perms::all_all, fs::perms::all_all); 870 871 // Restore umask to be safe. 872 ::umask(OldUmask); 873 #endif 874 875 #ifdef _WIN32 876 // Prove that create_directories() can handle a pathname > 248 characters, 877 // which is the documented limit for CreateDirectory(). 878 // (248 is MAX_PATH subtracting room for an 8.3 filename.) 879 // Generate a directory path guaranteed to fall into that range. 880 size_t TmpLen = TestDirectory.size(); 881 const char *OneDir = "\\123456789"; 882 size_t OneDirLen = strlen(OneDir); 883 ASSERT_LT(OneDirLen, 12U); 884 size_t NLevels = ((248 - TmpLen) / OneDirLen) + 1; 885 SmallString<260> LongDir(TestDirectory); 886 for (size_t I = 0; I < NLevels; ++I) 887 LongDir.append(OneDir); 888 ASSERT_NO_ERROR(fs::create_directories(Twine(LongDir))); 889 ASSERT_NO_ERROR(fs::create_directories(Twine(LongDir))); 890 ASSERT_EQ(fs::create_directories(Twine(LongDir), false), 891 errc::file_exists); 892 // Tidy up, "recursively" removing the directories. 893 StringRef ThisDir(LongDir); 894 for (size_t J = 0; J < NLevels; ++J) { 895 ASSERT_NO_ERROR(fs::remove(ThisDir)); 896 ThisDir = path::parent_path(ThisDir); 897 } 898 899 // Also verify that paths with Unix separators are handled correctly. 900 std::string LongPathWithUnixSeparators(TestDirectory.str()); 901 // Add at least one subdirectory to TestDirectory, and replace slashes with 902 // backslashes 903 do { 904 LongPathWithUnixSeparators.append("/DirNameWith19Charss"); 905 } while (LongPathWithUnixSeparators.size() < 260); 906 std::replace(LongPathWithUnixSeparators.begin(), 907 LongPathWithUnixSeparators.end(), 908 '\\', '/'); 909 ASSERT_NO_ERROR(fs::create_directories(Twine(LongPathWithUnixSeparators))); 910 // cleanup 911 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + 912 "/DirNameWith19Charss")); 913 914 // Similarly for a relative pathname. Need to set the current directory to 915 // TestDirectory so that the one we create ends up in the right place. 916 char PreviousDir[260]; 917 size_t PreviousDirLen = ::GetCurrentDirectoryA(260, PreviousDir); 918 ASSERT_GT(PreviousDirLen, 0U); 919 ASSERT_LT(PreviousDirLen, 260U); 920 ASSERT_NE(::SetCurrentDirectoryA(TestDirectory.c_str()), 0); 921 LongDir.clear(); 922 // Generate a relative directory name with absolute length > 248. 923 size_t LongDirLen = 249 - TestDirectory.size(); 924 LongDir.assign(LongDirLen, 'a'); 925 ASSERT_NO_ERROR(fs::create_directory(Twine(LongDir))); 926 // While we're here, prove that .. and . handling works in these long paths. 927 const char *DotDotDirs = "\\..\\.\\b"; 928 LongDir.append(DotDotDirs); 929 ASSERT_NO_ERROR(fs::create_directory("b")); 930 ASSERT_EQ(fs::create_directory(Twine(LongDir), false), errc::file_exists); 931 // And clean up. 932 ASSERT_NO_ERROR(fs::remove("b")); 933 ASSERT_NO_ERROR(fs::remove( 934 Twine(LongDir.substr(0, LongDir.size() - strlen(DotDotDirs))))); 935 ASSERT_NE(::SetCurrentDirectoryA(PreviousDir), 0); 936 #endif 937 } 938 939 TEST_F(FileSystemTest, DirectoryIteration) { 940 std::error_code ec; 941 for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec)) 942 ASSERT_NO_ERROR(ec); 943 944 // Create a known hierarchy to recurse over. 945 ASSERT_NO_ERROR( 946 fs::create_directories(Twine(TestDirectory) + "/recursive/a0/aa1")); 947 ASSERT_NO_ERROR( 948 fs::create_directories(Twine(TestDirectory) + "/recursive/a0/ab1")); 949 ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) + 950 "/recursive/dontlookhere/da1")); 951 ASSERT_NO_ERROR( 952 fs::create_directories(Twine(TestDirectory) + "/recursive/z0/za1")); 953 ASSERT_NO_ERROR( 954 fs::create_directories(Twine(TestDirectory) + "/recursive/pop/p1")); 955 typedef std::vector<std::string> v_t; 956 v_t visited; 957 for (fs::recursive_directory_iterator i(Twine(TestDirectory) 958 + "/recursive", ec), e; i != e; i.increment(ec)){ 959 ASSERT_NO_ERROR(ec); 960 if (path::filename(i->path()) == "p1") { 961 i.pop(); 962 // FIXME: recursive_directory_iterator should be more robust. 963 if (i == e) break; 964 } 965 if (path::filename(i->path()) == "dontlookhere") 966 i.no_push(); 967 visited.push_back(std::string(path::filename(i->path()))); 968 } 969 v_t::const_iterator a0 = find(visited, "a0"); 970 v_t::const_iterator aa1 = find(visited, "aa1"); 971 v_t::const_iterator ab1 = find(visited, "ab1"); 972 v_t::const_iterator dontlookhere = find(visited, "dontlookhere"); 973 v_t::const_iterator da1 = find(visited, "da1"); 974 v_t::const_iterator z0 = find(visited, "z0"); 975 v_t::const_iterator za1 = find(visited, "za1"); 976 v_t::const_iterator pop = find(visited, "pop"); 977 v_t::const_iterator p1 = find(visited, "p1"); 978 979 // Make sure that each path was visited correctly. 980 ASSERT_NE(a0, visited.end()); 981 ASSERT_NE(aa1, visited.end()); 982 ASSERT_NE(ab1, visited.end()); 983 ASSERT_NE(dontlookhere, visited.end()); 984 ASSERT_EQ(da1, visited.end()); // Not visited. 985 ASSERT_NE(z0, visited.end()); 986 ASSERT_NE(za1, visited.end()); 987 ASSERT_NE(pop, visited.end()); 988 ASSERT_EQ(p1, visited.end()); // Not visited. 989 990 // Make sure that parents were visited before children. No other ordering 991 // guarantees can be made across siblings. 992 ASSERT_LT(a0, aa1); 993 ASSERT_LT(a0, ab1); 994 ASSERT_LT(z0, za1); 995 996 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/aa1")); 997 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/ab1")); 998 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0")); 999 ASSERT_NO_ERROR( 1000 fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere/da1")); 1001 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere")); 1002 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop/p1")); 1003 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop")); 1004 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0/za1")); 1005 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0")); 1006 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive")); 1007 1008 // Test recursive_directory_iterator level() 1009 ASSERT_NO_ERROR( 1010 fs::create_directories(Twine(TestDirectory) + "/reclevel/a/b/c")); 1011 fs::recursive_directory_iterator I(Twine(TestDirectory) + "/reclevel", ec), E; 1012 for (int l = 0; I != E; I.increment(ec), ++l) { 1013 ASSERT_NO_ERROR(ec); 1014 EXPECT_EQ(I.level(), l); 1015 } 1016 EXPECT_EQ(I, E); 1017 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a/b/c")); 1018 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a/b")); 1019 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a")); 1020 ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel")); 1021 } 1022 1023 #ifdef LLVM_ON_UNIX 1024 TEST_F(FileSystemTest, BrokenSymlinkDirectoryIteration) { 1025 // Create a known hierarchy to recurse over. 1026 ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) + "/symlink")); 1027 ASSERT_NO_ERROR( 1028 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/a")); 1029 ASSERT_NO_ERROR( 1030 fs::create_directories(Twine(TestDirectory) + "/symlink/b/bb")); 1031 ASSERT_NO_ERROR( 1032 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/b/ba")); 1033 ASSERT_NO_ERROR( 1034 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/b/bc")); 1035 ASSERT_NO_ERROR( 1036 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/c")); 1037 ASSERT_NO_ERROR( 1038 fs::create_directories(Twine(TestDirectory) + "/symlink/d/dd/ddd")); 1039 ASSERT_NO_ERROR(fs::create_link(Twine(TestDirectory) + "/symlink/d/dd", 1040 Twine(TestDirectory) + "/symlink/d/da")); 1041 ASSERT_NO_ERROR( 1042 fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/e")); 1043 1044 typedef std::vector<std::string> v_t; 1045 v_t VisitedNonBrokenSymlinks; 1046 v_t VisitedBrokenSymlinks; 1047 std::error_code ec; 1048 using testing::UnorderedElementsAre; 1049 using testing::UnorderedElementsAreArray; 1050 1051 // Broken symbol links are expected to throw an error. 1052 for (fs::directory_iterator i(Twine(TestDirectory) + "/symlink", ec), e; 1053 i != e; i.increment(ec)) { 1054 ASSERT_NO_ERROR(ec); 1055 if (i->status().getError() == 1056 std::make_error_code(std::errc::no_such_file_or_directory)) { 1057 VisitedBrokenSymlinks.push_back(std::string(path::filename(i->path()))); 1058 continue; 1059 } 1060 VisitedNonBrokenSymlinks.push_back(std::string(path::filename(i->path()))); 1061 } 1062 EXPECT_THAT(VisitedNonBrokenSymlinks, UnorderedElementsAre("b", "d")); 1063 VisitedNonBrokenSymlinks.clear(); 1064 1065 EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre("a", "c", "e")); 1066 VisitedBrokenSymlinks.clear(); 1067 1068 // Broken symbol links are expected to throw an error. 1069 for (fs::recursive_directory_iterator i( 1070 Twine(TestDirectory) + "/symlink", ec), e; i != e; i.increment(ec)) { 1071 ASSERT_NO_ERROR(ec); 1072 if (i->status().getError() == 1073 std::make_error_code(std::errc::no_such_file_or_directory)) { 1074 VisitedBrokenSymlinks.push_back(std::string(path::filename(i->path()))); 1075 continue; 1076 } 1077 VisitedNonBrokenSymlinks.push_back(std::string(path::filename(i->path()))); 1078 } 1079 EXPECT_THAT(VisitedNonBrokenSymlinks, 1080 UnorderedElementsAre("b", "bb", "d", "da", "dd", "ddd", "ddd")); 1081 VisitedNonBrokenSymlinks.clear(); 1082 1083 EXPECT_THAT(VisitedBrokenSymlinks, 1084 UnorderedElementsAre("a", "ba", "bc", "c", "e")); 1085 VisitedBrokenSymlinks.clear(); 1086 1087 for (fs::recursive_directory_iterator i( 1088 Twine(TestDirectory) + "/symlink", ec, /*follow_symlinks=*/false), e; 1089 i != e; i.increment(ec)) { 1090 ASSERT_NO_ERROR(ec); 1091 if (i->status().getError() == 1092 std::make_error_code(std::errc::no_such_file_or_directory)) { 1093 VisitedBrokenSymlinks.push_back(std::string(path::filename(i->path()))); 1094 continue; 1095 } 1096 VisitedNonBrokenSymlinks.push_back(std::string(path::filename(i->path()))); 1097 } 1098 EXPECT_THAT(VisitedNonBrokenSymlinks, 1099 UnorderedElementsAreArray({"a", "b", "ba", "bb", "bc", "c", "d", 1100 "da", "dd", "ddd", "e"})); 1101 VisitedNonBrokenSymlinks.clear(); 1102 1103 EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre()); 1104 VisitedBrokenSymlinks.clear(); 1105 1106 ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/symlink")); 1107 } 1108 #endif 1109 1110 TEST_F(FileSystemTest, Remove) { 1111 SmallString<64> BaseDir; 1112 SmallString<64> Paths[4]; 1113 int fds[4]; 1114 ASSERT_NO_ERROR(fs::createUniqueDirectory("fs_remove", BaseDir)); 1115 1116 ASSERT_NO_ERROR(fs::create_directories(Twine(BaseDir) + "/foo/bar/baz")); 1117 ASSERT_NO_ERROR(fs::create_directories(Twine(BaseDir) + "/foo/bar/buzz")); 1118 ASSERT_NO_ERROR(fs::createUniqueFile( 1119 Twine(BaseDir) + "/foo/bar/baz/%%%%%%.tmp", fds[0], Paths[0])); 1120 ASSERT_NO_ERROR(fs::createUniqueFile( 1121 Twine(BaseDir) + "/foo/bar/baz/%%%%%%.tmp", fds[1], Paths[1])); 1122 ASSERT_NO_ERROR(fs::createUniqueFile( 1123 Twine(BaseDir) + "/foo/bar/buzz/%%%%%%.tmp", fds[2], Paths[2])); 1124 ASSERT_NO_ERROR(fs::createUniqueFile( 1125 Twine(BaseDir) + "/foo/bar/buzz/%%%%%%.tmp", fds[3], Paths[3])); 1126 1127 for (int fd : fds) 1128 ::close(fd); 1129 1130 EXPECT_TRUE(fs::exists(Twine(BaseDir) + "/foo/bar/baz")); 1131 EXPECT_TRUE(fs::exists(Twine(BaseDir) + "/foo/bar/buzz")); 1132 EXPECT_TRUE(fs::exists(Paths[0])); 1133 EXPECT_TRUE(fs::exists(Paths[1])); 1134 EXPECT_TRUE(fs::exists(Paths[2])); 1135 EXPECT_TRUE(fs::exists(Paths[3])); 1136 1137 ASSERT_NO_ERROR(fs::remove_directories("D:/footest")); 1138 1139 ASSERT_NO_ERROR(fs::remove_directories(BaseDir)); 1140 ASSERT_FALSE(fs::exists(BaseDir)); 1141 } 1142 1143 #ifdef _WIN32 1144 TEST_F(FileSystemTest, CarriageReturn) { 1145 SmallString<128> FilePathname(TestDirectory); 1146 std::error_code EC; 1147 path::append(FilePathname, "test"); 1148 1149 { 1150 raw_fd_ostream File(FilePathname, EC, sys::fs::OF_Text); 1151 ASSERT_NO_ERROR(EC); 1152 File << '\n'; 1153 } 1154 { 1155 auto Buf = MemoryBuffer::getFile(FilePathname.str()); 1156 EXPECT_TRUE((bool)Buf); 1157 EXPECT_EQ(Buf.get()->getBuffer(), "\r\n"); 1158 } 1159 1160 { 1161 raw_fd_ostream File(FilePathname, EC, sys::fs::OF_None); 1162 ASSERT_NO_ERROR(EC); 1163 File << '\n'; 1164 } 1165 { 1166 auto Buf = MemoryBuffer::getFile(FilePathname.str()); 1167 EXPECT_TRUE((bool)Buf); 1168 EXPECT_EQ(Buf.get()->getBuffer(), "\n"); 1169 } 1170 ASSERT_NO_ERROR(fs::remove(Twine(FilePathname))); 1171 } 1172 #endif 1173 1174 TEST_F(FileSystemTest, Resize) { 1175 int FD; 1176 SmallString<64> TempPath; 1177 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1178 ASSERT_NO_ERROR(fs::resize_file(FD, 123)); 1179 fs::file_status Status; 1180 ASSERT_NO_ERROR(fs::status(FD, Status)); 1181 ASSERT_EQ(Status.getSize(), 123U); 1182 ::close(FD); 1183 ASSERT_NO_ERROR(fs::remove(TempPath)); 1184 } 1185 1186 TEST_F(FileSystemTest, MD5) { 1187 int FD; 1188 SmallString<64> TempPath; 1189 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1190 StringRef Data("abcdefghijklmnopqrstuvwxyz"); 1191 ASSERT_EQ(write(FD, Data.data(), Data.size()), static_cast<ssize_t>(Data.size())); 1192 lseek(FD, 0, SEEK_SET); 1193 auto Hash = fs::md5_contents(FD); 1194 ::close(FD); 1195 ASSERT_NO_ERROR(Hash.getError()); 1196 1197 EXPECT_STREQ("c3fcd3d76192e4007dfb496cca67e13b", Hash->digest().c_str()); 1198 } 1199 1200 TEST_F(FileSystemTest, FileMapping) { 1201 // Create a temp file. 1202 int FileDescriptor; 1203 SmallString<64> TempPath; 1204 ASSERT_NO_ERROR( 1205 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 1206 unsigned Size = 4096; 1207 ASSERT_NO_ERROR(fs::resize_file(FileDescriptor, Size)); 1208 1209 // Map in temp file and add some content 1210 std::error_code EC; 1211 StringRef Val("hello there"); 1212 { 1213 fs::mapped_file_region mfr(fs::convertFDToNativeFile(FileDescriptor), 1214 fs::mapped_file_region::readwrite, Size, 0, EC); 1215 ASSERT_NO_ERROR(EC); 1216 std::copy(Val.begin(), Val.end(), mfr.data()); 1217 // Explicitly add a 0. 1218 mfr.data()[Val.size()] = 0; 1219 // Unmap temp file 1220 } 1221 ASSERT_EQ(close(FileDescriptor), 0); 1222 1223 // Map it back in read-only 1224 { 1225 int FD; 1226 EC = fs::openFileForRead(Twine(TempPath), FD); 1227 ASSERT_NO_ERROR(EC); 1228 fs::mapped_file_region mfr(fs::convertFDToNativeFile(FD), 1229 fs::mapped_file_region::readonly, Size, 0, EC); 1230 ASSERT_NO_ERROR(EC); 1231 1232 // Verify content 1233 EXPECT_EQ(StringRef(mfr.const_data()), Val); 1234 1235 // Unmap temp file 1236 fs::mapped_file_region m(fs::convertFDToNativeFile(FD), 1237 fs::mapped_file_region::readonly, Size, 0, EC); 1238 ASSERT_NO_ERROR(EC); 1239 ASSERT_EQ(close(FD), 0); 1240 } 1241 ASSERT_NO_ERROR(fs::remove(TempPath)); 1242 } 1243 1244 TEST(Support, NormalizePath) { 1245 // Input, Expected Win, Expected Posix 1246 using TestTuple = std::tuple<const char *, const char *, const char *>; 1247 std::vector<TestTuple> Tests; 1248 Tests.emplace_back("a", "a", "a"); 1249 Tests.emplace_back("a/b", "a\\b", "a/b"); 1250 Tests.emplace_back("a\\b", "a\\b", "a/b"); 1251 Tests.emplace_back("a\\\\b", "a\\\\b", "a//b"); 1252 Tests.emplace_back("\\a", "\\a", "/a"); 1253 Tests.emplace_back("a\\", "a\\", "a/"); 1254 Tests.emplace_back("a\\t", "a\\t", "a/t"); 1255 1256 for (auto &T : Tests) { 1257 SmallString<64> Win(std::get<0>(T)); 1258 SmallString<64> Posix(Win); 1259 path::native(Win, path::Style::windows); 1260 path::native(Posix, path::Style::posix); 1261 EXPECT_EQ(std::get<1>(T), Win); 1262 EXPECT_EQ(std::get<2>(T), Posix); 1263 } 1264 1265 #if defined(_WIN32) 1266 SmallString<64> PathHome; 1267 path::home_directory(PathHome); 1268 1269 const char *Path7a = "~/aaa"; 1270 SmallString<64> Path7(Path7a); 1271 path::native(Path7); 1272 EXPECT_TRUE(Path7.endswith("\\aaa")); 1273 EXPECT_TRUE(Path7.startswith(PathHome)); 1274 EXPECT_EQ(Path7.size(), PathHome.size() + strlen(Path7a + 1)); 1275 1276 const char *Path8a = "~"; 1277 SmallString<64> Path8(Path8a); 1278 path::native(Path8); 1279 EXPECT_EQ(Path8, PathHome); 1280 1281 const char *Path9a = "~aaa"; 1282 SmallString<64> Path9(Path9a); 1283 path::native(Path9); 1284 EXPECT_EQ(Path9, "~aaa"); 1285 1286 const char *Path10a = "aaa/~/b"; 1287 SmallString<64> Path10(Path10a); 1288 path::native(Path10); 1289 EXPECT_EQ(Path10, "aaa\\~\\b"); 1290 #endif 1291 } 1292 1293 TEST(Support, RemoveLeadingDotSlash) { 1294 StringRef Path1("././/foolz/wat"); 1295 StringRef Path2("./////"); 1296 1297 Path1 = path::remove_leading_dotslash(Path1); 1298 EXPECT_EQ(Path1, "foolz/wat"); 1299 Path2 = path::remove_leading_dotslash(Path2); 1300 EXPECT_EQ(Path2, ""); 1301 } 1302 1303 static std::string remove_dots(StringRef path, bool remove_dot_dot, 1304 path::Style style) { 1305 SmallString<256> buffer(path); 1306 path::remove_dots(buffer, remove_dot_dot, style); 1307 return std::string(buffer.str()); 1308 } 1309 1310 TEST(Support, RemoveDots) { 1311 EXPECT_EQ("foolz\\wat", 1312 remove_dots(".\\.\\\\foolz\\wat", false, path::Style::windows)); 1313 EXPECT_EQ("", remove_dots(".\\\\\\\\\\", false, path::Style::windows)); 1314 1315 EXPECT_EQ("a\\..\\b\\c", 1316 remove_dots(".\\a\\..\\b\\c", false, path::Style::windows)); 1317 EXPECT_EQ("b\\c", remove_dots(".\\a\\..\\b\\c", true, path::Style::windows)); 1318 EXPECT_EQ("c", remove_dots(".\\.\\c", true, path::Style::windows)); 1319 EXPECT_EQ("..\\a\\c", 1320 remove_dots("..\\a\\b\\..\\c", true, path::Style::windows)); 1321 EXPECT_EQ("..\\..\\a\\c", 1322 remove_dots("..\\..\\a\\b\\..\\c", true, path::Style::windows)); 1323 EXPECT_EQ("C:\\a\\c", remove_dots("C:\\foo\\bar//..\\..\\a\\c", true, 1324 path::Style::windows)); 1325 1326 // FIXME: These leading forward slashes are emergent behavior. VFS depends on 1327 // this behavior now. 1328 EXPECT_EQ("C:/bar", 1329 remove_dots("C:/foo/../bar", true, path::Style::windows)); 1330 EXPECT_EQ("C:/foo\\bar", 1331 remove_dots("C:/foo/bar", true, path::Style::windows)); 1332 EXPECT_EQ("C:/foo\\bar", 1333 remove_dots("C:/foo\\bar", true, path::Style::windows)); 1334 EXPECT_EQ("/", remove_dots("/", true, path::Style::windows)); 1335 EXPECT_EQ("C:/", remove_dots("C:/", true, path::Style::windows)); 1336 1337 // Some clients of remove_dots expect it to remove trailing slashes. Again, 1338 // this is emergent behavior that VFS relies on, and not inherently part of 1339 // the specification. 1340 EXPECT_EQ("C:\\foo\\bar", 1341 remove_dots("C:\\foo\\bar\\", true, path::Style::windows)); 1342 EXPECT_EQ("/foo/bar", 1343 remove_dots("/foo/bar/", true, path::Style::posix)); 1344 1345 // A double separator is rewritten. 1346 EXPECT_EQ("C:/foo\\bar", remove_dots("C:/foo//bar", true, path::Style::windows)); 1347 1348 SmallString<64> Path1(".\\.\\c"); 1349 EXPECT_TRUE(path::remove_dots(Path1, true, path::Style::windows)); 1350 EXPECT_EQ("c", Path1); 1351 1352 EXPECT_EQ("foolz/wat", 1353 remove_dots("././/foolz/wat", false, path::Style::posix)); 1354 EXPECT_EQ("", remove_dots("./////", false, path::Style::posix)); 1355 1356 EXPECT_EQ("a/../b/c", remove_dots("./a/../b/c", false, path::Style::posix)); 1357 EXPECT_EQ("b/c", remove_dots("./a/../b/c", true, path::Style::posix)); 1358 EXPECT_EQ("c", remove_dots("././c", true, path::Style::posix)); 1359 EXPECT_EQ("../a/c", remove_dots("../a/b/../c", true, path::Style::posix)); 1360 EXPECT_EQ("../../a/c", 1361 remove_dots("../../a/b/../c", true, path::Style::posix)); 1362 EXPECT_EQ("/a/c", remove_dots("/../../a/c", true, path::Style::posix)); 1363 EXPECT_EQ("/a/c", 1364 remove_dots("/../a/b//../././/c", true, path::Style::posix)); 1365 EXPECT_EQ("/", remove_dots("/", true, path::Style::posix)); 1366 1367 // FIXME: Leaving behind this double leading slash seems like a bug. 1368 EXPECT_EQ("//foo/bar", 1369 remove_dots("//foo/bar/", true, path::Style::posix)); 1370 1371 SmallString<64> Path2("././c"); 1372 EXPECT_TRUE(path::remove_dots(Path2, true, path::Style::posix)); 1373 EXPECT_EQ("c", Path2); 1374 } 1375 1376 TEST(Support, ReplacePathPrefix) { 1377 SmallString<64> Path1("/foo"); 1378 SmallString<64> Path2("/old/foo"); 1379 SmallString<64> Path3("/oldnew/foo"); 1380 SmallString<64> Path4("C:\\old/foo\\bar"); 1381 SmallString<64> OldPrefix("/old"); 1382 SmallString<64> OldPrefixSep("/old/"); 1383 SmallString<64> OldPrefixWin("c:/oLD/F"); 1384 SmallString<64> NewPrefix("/new"); 1385 SmallString<64> NewPrefix2("/longernew"); 1386 SmallString<64> EmptyPrefix(""); 1387 bool Found; 1388 1389 SmallString<64> Path = Path1; 1390 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1391 EXPECT_FALSE(Found); 1392 EXPECT_EQ(Path, "/foo"); 1393 Path = Path2; 1394 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1395 EXPECT_TRUE(Found); 1396 EXPECT_EQ(Path, "/new/foo"); 1397 Path = Path2; 1398 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix2); 1399 EXPECT_TRUE(Found); 1400 EXPECT_EQ(Path, "/longernew/foo"); 1401 Path = Path1; 1402 Found = path::replace_path_prefix(Path, EmptyPrefix, NewPrefix); 1403 EXPECT_TRUE(Found); 1404 EXPECT_EQ(Path, "/new/foo"); 1405 Path = Path2; 1406 Found = path::replace_path_prefix(Path, OldPrefix, EmptyPrefix); 1407 EXPECT_TRUE(Found); 1408 EXPECT_EQ(Path, "/foo"); 1409 Path = Path2; 1410 Found = path::replace_path_prefix(Path, OldPrefixSep, EmptyPrefix); 1411 EXPECT_TRUE(Found); 1412 EXPECT_EQ(Path, "foo"); 1413 Path = Path3; 1414 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1415 EXPECT_TRUE(Found); 1416 EXPECT_EQ(Path, "/newnew/foo"); 1417 Path = Path3; 1418 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix2); 1419 EXPECT_TRUE(Found); 1420 EXPECT_EQ(Path, "/longernewnew/foo"); 1421 Path = Path1; 1422 Found = path::replace_path_prefix(Path, EmptyPrefix, NewPrefix); 1423 EXPECT_TRUE(Found); 1424 EXPECT_EQ(Path, "/new/foo"); 1425 Path = OldPrefix; 1426 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1427 EXPECT_TRUE(Found); 1428 EXPECT_EQ(Path, "/new"); 1429 Path = OldPrefixSep; 1430 Found = path::replace_path_prefix(Path, OldPrefix, NewPrefix); 1431 EXPECT_TRUE(Found); 1432 EXPECT_EQ(Path, "/new/"); 1433 Path = OldPrefix; 1434 Found = path::replace_path_prefix(Path, OldPrefixSep, NewPrefix); 1435 EXPECT_FALSE(Found); 1436 EXPECT_EQ(Path, "/old"); 1437 Path = Path4; 1438 Found = path::replace_path_prefix(Path, OldPrefixWin, NewPrefix, 1439 path::Style::windows); 1440 EXPECT_TRUE(Found); 1441 EXPECT_EQ(Path, "/newoo\\bar"); 1442 Path = Path4; 1443 Found = path::replace_path_prefix(Path, OldPrefixWin, NewPrefix, 1444 path::Style::posix); 1445 EXPECT_FALSE(Found); 1446 EXPECT_EQ(Path, "C:\\old/foo\\bar"); 1447 } 1448 1449 TEST_F(FileSystemTest, OpenFileForRead) { 1450 // Create a temp file. 1451 int FileDescriptor; 1452 SmallString<64> TempPath; 1453 ASSERT_NO_ERROR( 1454 fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); 1455 FileRemover Cleanup(TempPath); 1456 1457 // Make sure it exists. 1458 ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); 1459 1460 // Open the file for read 1461 int FileDescriptor2; 1462 SmallString<64> ResultPath; 1463 ASSERT_NO_ERROR(fs::openFileForRead(Twine(TempPath), FileDescriptor2, 1464 fs::OF_None, &ResultPath)) 1465 1466 // If we succeeded, check that the paths are the same (modulo case): 1467 if (!ResultPath.empty()) { 1468 // The paths returned by createTemporaryFile and getPathFromOpenFD 1469 // should reference the same file on disk. 1470 fs::UniqueID D1, D2; 1471 ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), D1)); 1472 ASSERT_NO_ERROR(fs::getUniqueID(Twine(ResultPath), D2)); 1473 ASSERT_EQ(D1, D2); 1474 } 1475 ::close(FileDescriptor); 1476 ::close(FileDescriptor2); 1477 1478 #ifdef _WIN32 1479 // Since Windows Vista, file access time is not updated by default. 1480 // This is instead updated manually by openFileForRead. 1481 // https://blogs.technet.microsoft.com/filecab/2006/11/07/disabling-last-access-time-in-windows-vista-to-improve-ntfs-performance/ 1482 // This part of the unit test is Windows specific as the updating of 1483 // access times can be disabled on Linux using /etc/fstab. 1484 1485 // Set access time to UNIX epoch. 1486 ASSERT_NO_ERROR(sys::fs::openFileForWrite(Twine(TempPath), FileDescriptor, 1487 fs::CD_OpenExisting)); 1488 TimePoint<> Epoch(std::chrono::milliseconds(0)); 1489 ASSERT_NO_ERROR(fs::setLastAccessAndModificationTime(FileDescriptor, Epoch)); 1490 ::close(FileDescriptor); 1491 1492 // Open the file and ensure access time is updated, when forced. 1493 ASSERT_NO_ERROR(fs::openFileForRead(Twine(TempPath), FileDescriptor, 1494 fs::OF_UpdateAtime, &ResultPath)); 1495 1496 sys::fs::file_status Status; 1497 ASSERT_NO_ERROR(sys::fs::status(FileDescriptor, Status)); 1498 auto FileAccessTime = Status.getLastAccessedTime(); 1499 1500 ASSERT_NE(Epoch, FileAccessTime); 1501 ::close(FileDescriptor); 1502 1503 // Ideally this test would include a case when ATime is not forced to update, 1504 // however the expected behaviour will differ depending on the configuration 1505 // of the Windows file system. 1506 #endif 1507 } 1508 1509 static void createFileWithData(const Twine &Path, bool ShouldExistBefore, 1510 fs::CreationDisposition Disp, StringRef Data) { 1511 int FD; 1512 ASSERT_EQ(ShouldExistBefore, fs::exists(Path)); 1513 ASSERT_NO_ERROR(fs::openFileForWrite(Path, FD, Disp)); 1514 FileDescriptorCloser Closer(FD); 1515 ASSERT_TRUE(fs::exists(Path)); 1516 1517 ASSERT_EQ(Data.size(), (size_t)write(FD, Data.data(), Data.size())); 1518 } 1519 1520 static void verifyFileContents(const Twine &Path, StringRef Contents) { 1521 auto Buffer = MemoryBuffer::getFile(Path); 1522 ASSERT_TRUE((bool)Buffer); 1523 StringRef Data = Buffer.get()->getBuffer(); 1524 ASSERT_EQ(Data, Contents); 1525 } 1526 1527 TEST_F(FileSystemTest, CreateNew) { 1528 int FD; 1529 Optional<FileDescriptorCloser> Closer; 1530 1531 // Succeeds if the file does not exist. 1532 ASSERT_FALSE(fs::exists(NonExistantFile)); 1533 ASSERT_NO_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateNew)); 1534 ASSERT_TRUE(fs::exists(NonExistantFile)); 1535 1536 FileRemover Cleanup(NonExistantFile); 1537 Closer.emplace(FD); 1538 1539 // And creates a file of size 0. 1540 sys::fs::file_status Status; 1541 ASSERT_NO_ERROR(sys::fs::status(FD, Status)); 1542 EXPECT_EQ(0ULL, Status.getSize()); 1543 1544 // Close this first, before trying to re-open the file. 1545 Closer.reset(); 1546 1547 // But fails if the file does exist. 1548 ASSERT_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateNew)); 1549 } 1550 1551 TEST_F(FileSystemTest, CreateAlways) { 1552 int FD; 1553 Optional<FileDescriptorCloser> Closer; 1554 1555 // Succeeds if the file does not exist. 1556 ASSERT_FALSE(fs::exists(NonExistantFile)); 1557 ASSERT_NO_ERROR( 1558 fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateAlways)); 1559 1560 Closer.emplace(FD); 1561 1562 ASSERT_TRUE(fs::exists(NonExistantFile)); 1563 1564 FileRemover Cleanup(NonExistantFile); 1565 1566 // And creates a file of size 0. 1567 uint64_t FileSize; 1568 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1569 ASSERT_EQ(0ULL, FileSize); 1570 1571 // If we write some data to it re-create it with CreateAlways, it succeeds and 1572 // truncates to 0 bytes. 1573 ASSERT_EQ(4, write(FD, "Test", 4)); 1574 1575 Closer.reset(); 1576 1577 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1578 ASSERT_EQ(4ULL, FileSize); 1579 1580 ASSERT_NO_ERROR( 1581 fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateAlways)); 1582 Closer.emplace(FD); 1583 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1584 ASSERT_EQ(0ULL, FileSize); 1585 } 1586 1587 TEST_F(FileSystemTest, OpenExisting) { 1588 int FD; 1589 1590 // Fails if the file does not exist. 1591 ASSERT_FALSE(fs::exists(NonExistantFile)); 1592 ASSERT_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_OpenExisting)); 1593 ASSERT_FALSE(fs::exists(NonExistantFile)); 1594 1595 // Make a dummy file now so that we can try again when the file does exist. 1596 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1597 FileRemover Cleanup(NonExistantFile); 1598 uint64_t FileSize; 1599 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1600 ASSERT_EQ(4ULL, FileSize); 1601 1602 // If we re-create it with different data, it overwrites rather than 1603 // appending. 1604 createFileWithData(NonExistantFile, true, fs::CD_OpenExisting, "Buzz"); 1605 verifyFileContents(NonExistantFile, "Buzz"); 1606 } 1607 1608 TEST_F(FileSystemTest, OpenAlways) { 1609 // Succeeds if the file does not exist. 1610 createFileWithData(NonExistantFile, false, fs::CD_OpenAlways, "Fizz"); 1611 FileRemover Cleanup(NonExistantFile); 1612 uint64_t FileSize; 1613 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1614 ASSERT_EQ(4ULL, FileSize); 1615 1616 // Now re-open it and write again, verifying the contents get over-written. 1617 createFileWithData(NonExistantFile, true, fs::CD_OpenAlways, "Bu"); 1618 verifyFileContents(NonExistantFile, "Buzz"); 1619 } 1620 1621 TEST_F(FileSystemTest, AppendSetsCorrectFileOffset) { 1622 fs::CreationDisposition Disps[] = {fs::CD_CreateAlways, fs::CD_OpenAlways, 1623 fs::CD_OpenExisting}; 1624 1625 // Write some data and re-open it with every possible disposition (this is a 1626 // hack that shouldn't work, but is left for compatibility. OF_Append 1627 // overrides 1628 // the specified disposition. 1629 for (fs::CreationDisposition Disp : Disps) { 1630 int FD; 1631 Optional<FileDescriptorCloser> Closer; 1632 1633 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1634 1635 FileRemover Cleanup(NonExistantFile); 1636 1637 uint64_t FileSize; 1638 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1639 ASSERT_EQ(4ULL, FileSize); 1640 ASSERT_NO_ERROR( 1641 fs::openFileForWrite(NonExistantFile, FD, Disp, fs::OF_Append)); 1642 Closer.emplace(FD); 1643 ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); 1644 ASSERT_EQ(4ULL, FileSize); 1645 1646 ASSERT_EQ(4, write(FD, "Buzz", 4)); 1647 Closer.reset(); 1648 1649 verifyFileContents(NonExistantFile, "FizzBuzz"); 1650 } 1651 } 1652 1653 static void verifyRead(int FD, StringRef Data, bool ShouldSucceed) { 1654 std::vector<char> Buffer; 1655 Buffer.resize(Data.size()); 1656 int Result = ::read(FD, Buffer.data(), Buffer.size()); 1657 if (ShouldSucceed) { 1658 ASSERT_EQ((size_t)Result, Data.size()); 1659 ASSERT_EQ(Data, StringRef(Buffer.data(), Buffer.size())); 1660 } else { 1661 ASSERT_EQ(-1, Result); 1662 ASSERT_EQ(EBADF, errno); 1663 } 1664 } 1665 1666 static void verifyWrite(int FD, StringRef Data, bool ShouldSucceed) { 1667 int Result = ::write(FD, Data.data(), Data.size()); 1668 if (ShouldSucceed) 1669 ASSERT_EQ((size_t)Result, Data.size()); 1670 else { 1671 ASSERT_EQ(-1, Result); 1672 ASSERT_EQ(EBADF, errno); 1673 } 1674 } 1675 1676 TEST_F(FileSystemTest, ReadOnlyFileCantWrite) { 1677 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1678 FileRemover Cleanup(NonExistantFile); 1679 1680 int FD; 1681 ASSERT_NO_ERROR(fs::openFileForRead(NonExistantFile, FD)); 1682 FileDescriptorCloser Closer(FD); 1683 1684 verifyWrite(FD, "Buzz", false); 1685 verifyRead(FD, "Fizz", true); 1686 } 1687 1688 TEST_F(FileSystemTest, WriteOnlyFileCantRead) { 1689 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1690 FileRemover Cleanup(NonExistantFile); 1691 1692 int FD; 1693 ASSERT_NO_ERROR( 1694 fs::openFileForWrite(NonExistantFile, FD, fs::CD_OpenExisting)); 1695 FileDescriptorCloser Closer(FD); 1696 verifyRead(FD, "Fizz", false); 1697 verifyWrite(FD, "Buzz", true); 1698 } 1699 1700 TEST_F(FileSystemTest, ReadWriteFileCanReadOrWrite) { 1701 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); 1702 FileRemover Cleanup(NonExistantFile); 1703 1704 int FD; 1705 ASSERT_NO_ERROR(fs::openFileForReadWrite(NonExistantFile, FD, 1706 fs::CD_OpenExisting, fs::OF_None)); 1707 FileDescriptorCloser Closer(FD); 1708 verifyRead(FD, "Fizz", true); 1709 verifyWrite(FD, "Buzz", true); 1710 } 1711 1712 TEST_F(FileSystemTest, readNativeFile) { 1713 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "01234"); 1714 FileRemover Cleanup(NonExistantFile); 1715 const auto &Read = [&](size_t ToRead) -> Expected<std::string> { 1716 std::string Buf(ToRead, '?'); 1717 Expected<fs::file_t> FD = fs::openNativeFileForRead(NonExistantFile); 1718 if (!FD) 1719 return FD.takeError(); 1720 auto Close = make_scope_exit([&] { fs::closeFile(*FD); }); 1721 if (Expected<size_t> BytesRead = fs::readNativeFile( 1722 *FD, makeMutableArrayRef(&*Buf.begin(), Buf.size()))) 1723 return Buf.substr(0, *BytesRead); 1724 else 1725 return BytesRead.takeError(); 1726 }; 1727 EXPECT_THAT_EXPECTED(Read(5), HasValue("01234")); 1728 EXPECT_THAT_EXPECTED(Read(3), HasValue("012")); 1729 EXPECT_THAT_EXPECTED(Read(6), HasValue("01234")); 1730 } 1731 1732 TEST_F(FileSystemTest, readNativeFileSlice) { 1733 createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "01234"); 1734 FileRemover Cleanup(NonExistantFile); 1735 Expected<fs::file_t> FD = fs::openNativeFileForRead(NonExistantFile); 1736 ASSERT_THAT_EXPECTED(FD, Succeeded()); 1737 auto Close = make_scope_exit([&] { fs::closeFile(*FD); }); 1738 const auto &Read = [&](size_t Offset, 1739 size_t ToRead) -> Expected<std::string> { 1740 std::string Buf(ToRead, '?'); 1741 if (Expected<size_t> BytesRead = fs::readNativeFileSlice( 1742 *FD, makeMutableArrayRef(&*Buf.begin(), Buf.size()), Offset)) 1743 return Buf.substr(0, *BytesRead); 1744 else 1745 return BytesRead.takeError(); 1746 }; 1747 EXPECT_THAT_EXPECTED(Read(0, 5), HasValue("01234")); 1748 EXPECT_THAT_EXPECTED(Read(0, 3), HasValue("012")); 1749 EXPECT_THAT_EXPECTED(Read(2, 3), HasValue("234")); 1750 EXPECT_THAT_EXPECTED(Read(0, 6), HasValue("01234")); 1751 EXPECT_THAT_EXPECTED(Read(2, 6), HasValue("234")); 1752 EXPECT_THAT_EXPECTED(Read(5, 5), HasValue("")); 1753 } 1754 1755 TEST_F(FileSystemTest, is_local) { 1756 bool TestDirectoryIsLocal; 1757 ASSERT_NO_ERROR(fs::is_local(TestDirectory, TestDirectoryIsLocal)); 1758 EXPECT_EQ(TestDirectoryIsLocal, fs::is_local(TestDirectory)); 1759 1760 int FD; 1761 SmallString<128> TempPath; 1762 ASSERT_NO_ERROR( 1763 fs::createUniqueFile(Twine(TestDirectory) + "/temp", FD, TempPath)); 1764 FileRemover Cleanup(TempPath); 1765 1766 // Make sure it exists. 1767 ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); 1768 1769 bool TempFileIsLocal; 1770 ASSERT_NO_ERROR(fs::is_local(FD, TempFileIsLocal)); 1771 EXPECT_EQ(TempFileIsLocal, fs::is_local(FD)); 1772 ::close(FD); 1773 1774 // Expect that the file and its parent directory are equally local or equally 1775 // remote. 1776 EXPECT_EQ(TestDirectoryIsLocal, TempFileIsLocal); 1777 } 1778 1779 TEST_F(FileSystemTest, getUmask) { 1780 #ifdef _WIN32 1781 EXPECT_EQ(fs::getUmask(), 0U) << "Should always be 0 on Windows."; 1782 #else 1783 unsigned OldMask = ::umask(0022); 1784 unsigned CurrentMask = fs::getUmask(); 1785 EXPECT_EQ(CurrentMask, 0022U) 1786 << "getUmask() didn't return previously set umask()"; 1787 EXPECT_EQ(::umask(OldMask), 0022U) << "getUmask() may have changed umask()"; 1788 #endif 1789 } 1790 1791 TEST_F(FileSystemTest, RespectUmask) { 1792 #ifndef _WIN32 1793 unsigned OldMask = ::umask(0022); 1794 1795 int FD; 1796 SmallString<128> TempPath; 1797 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1798 1799 fs::perms AllRWE = static_cast<fs::perms>(0777); 1800 1801 ASSERT_NO_ERROR(fs::setPermissions(TempPath, AllRWE)); 1802 1803 ErrorOr<fs::perms> Perms = fs::getPermissions(TempPath); 1804 ASSERT_TRUE(!!Perms); 1805 EXPECT_EQ(Perms.get(), AllRWE) << "Should have ignored umask by default"; 1806 1807 ASSERT_NO_ERROR(fs::setPermissions(TempPath, AllRWE)); 1808 1809 Perms = fs::getPermissions(TempPath); 1810 ASSERT_TRUE(!!Perms); 1811 EXPECT_EQ(Perms.get(), AllRWE) << "Should have ignored umask"; 1812 1813 ASSERT_NO_ERROR( 1814 fs::setPermissions(FD, static_cast<fs::perms>(AllRWE & ~fs::getUmask()))); 1815 Perms = fs::getPermissions(TempPath); 1816 ASSERT_TRUE(!!Perms); 1817 EXPECT_EQ(Perms.get(), static_cast<fs::perms>(0755)) 1818 << "Did not respect umask"; 1819 1820 (void)::umask(0057); 1821 1822 ASSERT_NO_ERROR( 1823 fs::setPermissions(FD, static_cast<fs::perms>(AllRWE & ~fs::getUmask()))); 1824 Perms = fs::getPermissions(TempPath); 1825 ASSERT_TRUE(!!Perms); 1826 EXPECT_EQ(Perms.get(), static_cast<fs::perms>(0720)) 1827 << "Did not respect umask"; 1828 1829 (void)::umask(OldMask); 1830 (void)::close(FD); 1831 #endif 1832 } 1833 1834 TEST_F(FileSystemTest, set_current_path) { 1835 SmallString<128> path; 1836 1837 ASSERT_NO_ERROR(fs::current_path(path)); 1838 ASSERT_NE(TestDirectory, path); 1839 1840 struct RestorePath { 1841 SmallString<128> path; 1842 RestorePath(const SmallString<128> &path) : path(path) {} 1843 ~RestorePath() { fs::set_current_path(path); } 1844 } restore_path(path); 1845 1846 ASSERT_NO_ERROR(fs::set_current_path(TestDirectory)); 1847 1848 ASSERT_NO_ERROR(fs::current_path(path)); 1849 1850 fs::UniqueID D1, D2; 1851 ASSERT_NO_ERROR(fs::getUniqueID(TestDirectory, D1)); 1852 ASSERT_NO_ERROR(fs::getUniqueID(path, D2)); 1853 ASSERT_EQ(D1, D2) << "D1: " << TestDirectory << "\nD2: " << path; 1854 } 1855 1856 TEST_F(FileSystemTest, permissions) { 1857 int FD; 1858 SmallString<64> TempPath; 1859 ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); 1860 FileRemover Cleanup(TempPath); 1861 1862 // Make sure it exists. 1863 ASSERT_TRUE(fs::exists(Twine(TempPath))); 1864 1865 auto CheckPermissions = [&](fs::perms Expected) { 1866 ErrorOr<fs::perms> Actual = fs::getPermissions(TempPath); 1867 return Actual && *Actual == Expected; 1868 }; 1869 1870 std::error_code NoError; 1871 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_all), NoError); 1872 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1873 1874 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read | fs::all_exe), NoError); 1875 EXPECT_TRUE(CheckPermissions(fs::all_read | fs::all_exe)); 1876 1877 #if defined(_WIN32) 1878 fs::perms ReadOnly = fs::all_read | fs::all_exe; 1879 EXPECT_EQ(fs::setPermissions(TempPath, fs::no_perms), NoError); 1880 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1881 1882 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_read), NoError); 1883 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1884 1885 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_write), NoError); 1886 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1887 1888 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_exe), NoError); 1889 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1890 1891 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_all), NoError); 1892 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1893 1894 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_read), NoError); 1895 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1896 1897 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_write), NoError); 1898 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1899 1900 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_exe), NoError); 1901 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1902 1903 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_all), NoError); 1904 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1905 1906 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_read), NoError); 1907 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1908 1909 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_write), NoError); 1910 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1911 1912 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_exe), NoError); 1913 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1914 1915 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_all), NoError); 1916 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1917 1918 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read), NoError); 1919 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1920 1921 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_write), NoError); 1922 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1923 1924 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_exe), NoError); 1925 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1926 1927 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe), NoError); 1928 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1929 1930 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_gid_on_exe), NoError); 1931 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1932 1933 EXPECT_EQ(fs::setPermissions(TempPath, fs::sticky_bit), NoError); 1934 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1935 1936 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe | 1937 fs::set_gid_on_exe | 1938 fs::sticky_bit), 1939 NoError); 1940 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1941 1942 EXPECT_EQ(fs::setPermissions(TempPath, ReadOnly | fs::set_uid_on_exe | 1943 fs::set_gid_on_exe | 1944 fs::sticky_bit), 1945 NoError); 1946 EXPECT_TRUE(CheckPermissions(ReadOnly)); 1947 1948 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms), NoError); 1949 EXPECT_TRUE(CheckPermissions(fs::all_all)); 1950 #else 1951 EXPECT_EQ(fs::setPermissions(TempPath, fs::no_perms), NoError); 1952 EXPECT_TRUE(CheckPermissions(fs::no_perms)); 1953 1954 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_read), NoError); 1955 EXPECT_TRUE(CheckPermissions(fs::owner_read)); 1956 1957 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_write), NoError); 1958 EXPECT_TRUE(CheckPermissions(fs::owner_write)); 1959 1960 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_exe), NoError); 1961 EXPECT_TRUE(CheckPermissions(fs::owner_exe)); 1962 1963 EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_all), NoError); 1964 EXPECT_TRUE(CheckPermissions(fs::owner_all)); 1965 1966 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_read), NoError); 1967 EXPECT_TRUE(CheckPermissions(fs::group_read)); 1968 1969 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_write), NoError); 1970 EXPECT_TRUE(CheckPermissions(fs::group_write)); 1971 1972 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_exe), NoError); 1973 EXPECT_TRUE(CheckPermissions(fs::group_exe)); 1974 1975 EXPECT_EQ(fs::setPermissions(TempPath, fs::group_all), NoError); 1976 EXPECT_TRUE(CheckPermissions(fs::group_all)); 1977 1978 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_read), NoError); 1979 EXPECT_TRUE(CheckPermissions(fs::others_read)); 1980 1981 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_write), NoError); 1982 EXPECT_TRUE(CheckPermissions(fs::others_write)); 1983 1984 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_exe), NoError); 1985 EXPECT_TRUE(CheckPermissions(fs::others_exe)); 1986 1987 EXPECT_EQ(fs::setPermissions(TempPath, fs::others_all), NoError); 1988 EXPECT_TRUE(CheckPermissions(fs::others_all)); 1989 1990 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read), NoError); 1991 EXPECT_TRUE(CheckPermissions(fs::all_read)); 1992 1993 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_write), NoError); 1994 EXPECT_TRUE(CheckPermissions(fs::all_write)); 1995 1996 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_exe), NoError); 1997 EXPECT_TRUE(CheckPermissions(fs::all_exe)); 1998 1999 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe), NoError); 2000 EXPECT_TRUE(CheckPermissions(fs::set_uid_on_exe)); 2001 2002 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_gid_on_exe), NoError); 2003 EXPECT_TRUE(CheckPermissions(fs::set_gid_on_exe)); 2004 2005 // Modern BSDs require root to set the sticky bit on files. 2006 // AIX and Solaris without root will mask off (i.e., lose) the sticky bit 2007 // on files. 2008 #if !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && \ 2009 !defined(_AIX) && !(defined(__sun__) && defined(__svr4__)) 2010 EXPECT_EQ(fs::setPermissions(TempPath, fs::sticky_bit), NoError); 2011 EXPECT_TRUE(CheckPermissions(fs::sticky_bit)); 2012 2013 EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe | 2014 fs::set_gid_on_exe | 2015 fs::sticky_bit), 2016 NoError); 2017 EXPECT_TRUE(CheckPermissions(fs::set_uid_on_exe | fs::set_gid_on_exe | 2018 fs::sticky_bit)); 2019 2020 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read | fs::set_uid_on_exe | 2021 fs::set_gid_on_exe | 2022 fs::sticky_bit), 2023 NoError); 2024 EXPECT_TRUE(CheckPermissions(fs::all_read | fs::set_uid_on_exe | 2025 fs::set_gid_on_exe | fs::sticky_bit)); 2026 2027 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms), NoError); 2028 EXPECT_TRUE(CheckPermissions(fs::all_perms)); 2029 #endif // !FreeBSD && !NetBSD && !OpenBSD && !AIX 2030 2031 EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms & ~fs::sticky_bit), 2032 NoError); 2033 EXPECT_TRUE(CheckPermissions(fs::all_perms & ~fs::sticky_bit)); 2034 #endif 2035 } 2036 2037 #ifdef _WIN32 2038 TEST_F(FileSystemTest, widenPath) { 2039 const std::wstring LongPathPrefix(L"\\\\?\\"); 2040 2041 // Test that the length limit is checked against the UTF-16 length and not the 2042 // UTF-8 length. 2043 std::string Input("C:\\foldername\\"); 2044 const std::string Pi("\xcf\x80"); // UTF-8 lower case pi. 2045 // Add Pi up to the MAX_PATH limit. 2046 const size_t NumChars = MAX_PATH - Input.size() - 1; 2047 for (size_t i = 0; i < NumChars; ++i) 2048 Input += Pi; 2049 // Check that UTF-8 length already exceeds MAX_PATH. 2050 EXPECT_TRUE(Input.size() > MAX_PATH); 2051 SmallVector<wchar_t, MAX_PATH + 16> Result; 2052 ASSERT_NO_ERROR(windows::widenPath(Input, Result)); 2053 // Result should not start with the long path prefix. 2054 EXPECT_TRUE(std::wmemcmp(Result.data(), LongPathPrefix.c_str(), 2055 LongPathPrefix.size()) != 0); 2056 EXPECT_EQ(Result.size(), (size_t)MAX_PATH - 1); 2057 2058 // Add another Pi to exceed the MAX_PATH limit. 2059 Input += Pi; 2060 // Construct the expected result. 2061 SmallVector<wchar_t, MAX_PATH + 16> Expected; 2062 ASSERT_NO_ERROR(windows::UTF8ToUTF16(Input, Expected)); 2063 Expected.insert(Expected.begin(), LongPathPrefix.begin(), 2064 LongPathPrefix.end()); 2065 2066 ASSERT_NO_ERROR(windows::widenPath(Input, Result)); 2067 EXPECT_EQ(Result, Expected); 2068 2069 // Test that UNC paths are handled correctly. 2070 const std::string ShareName("\\\\sharename\\"); 2071 const std::string FileName("\\filename"); 2072 // Initialize directory name so that the input is within the MAX_PATH limit. 2073 const char DirChar = 'x'; 2074 std::string DirName(MAX_PATH - ShareName.size() - FileName.size() - 1, 2075 DirChar); 2076 2077 Input = ShareName + DirName + FileName; 2078 ASSERT_NO_ERROR(windows::widenPath(Input, Result)); 2079 // Result should not start with the long path prefix. 2080 EXPECT_TRUE(std::wmemcmp(Result.data(), LongPathPrefix.c_str(), 2081 LongPathPrefix.size()) != 0); 2082 EXPECT_EQ(Result.size(), (size_t)MAX_PATH - 1); 2083 2084 // Extend the directory name so the input exceeds the MAX_PATH limit. 2085 DirName += DirChar; 2086 Input = ShareName + DirName + FileName; 2087 // Construct the expected result. 2088 ASSERT_NO_ERROR(windows::UTF8ToUTF16(StringRef(Input).substr(2), Expected)); 2089 const std::wstring UNCPrefix(LongPathPrefix + L"UNC\\"); 2090 Expected.insert(Expected.begin(), UNCPrefix.begin(), UNCPrefix.end()); 2091 2092 ASSERT_NO_ERROR(windows::widenPath(Input, Result)); 2093 EXPECT_EQ(Result, Expected); 2094 2095 // Check that Unix separators are handled correctly. 2096 std::replace(Input.begin(), Input.end(), '\\', '/'); 2097 ASSERT_NO_ERROR(windows::widenPath(Input, Result)); 2098 EXPECT_EQ(Result, Expected); 2099 2100 // Check the removal of "dots". 2101 Input = ShareName + DirName + "\\.\\foo\\.\\.." + FileName; 2102 ASSERT_NO_ERROR(windows::widenPath(Input, Result)); 2103 EXPECT_EQ(Result, Expected); 2104 } 2105 #endif 2106 2107 } // anonymous namespace 2108