//===- llvm/unittest/Support/Path.cpp - Path tests ------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #include "llvm/Support/Path.h" #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/Triple.h" #include "llvm/BinaryFormat/Magic.h" #include "llvm/Config/llvm-config.h" #include "llvm/Support/ConvertUTF.h" #include "llvm/Support/Errc.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/FileSystem.h" #include "llvm/Support/FileUtilities.h" #include "llvm/Support/Host.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/raw_ostream.h" #include "gtest/gtest.h" #include "gmock/gmock.h" #ifdef _WIN32 #include "llvm/ADT/ArrayRef.h" #include "llvm/Support/Chrono.h" #include #include #endif #ifdef LLVM_ON_UNIX #include #include #endif using namespace llvm; using namespace llvm::sys; #define ASSERT_NO_ERROR(x) \ if (std::error_code ASSERT_NO_ERROR_ec = x) { \ SmallString<128> MessageStorage; \ raw_svector_ostream Message(MessageStorage); \ Message << #x ": did not return errc::success.\n" \ << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \ << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \ GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ } else { \ } #define ASSERT_ERROR(x) \ if (!x) { \ SmallString<128> MessageStorage; \ raw_svector_ostream Message(MessageStorage); \ Message << #x ": did not return a failure error code.\n"; \ GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ } namespace { struct FileDescriptorCloser { explicit FileDescriptorCloser(int FD) : FD(FD) {} ~FileDescriptorCloser() { ::close(FD); } int FD; }; TEST(is_separator, Works) { EXPECT_TRUE(path::is_separator('/')); EXPECT_FALSE(path::is_separator('\0')); EXPECT_FALSE(path::is_separator('-')); EXPECT_FALSE(path::is_separator(' ')); EXPECT_TRUE(path::is_separator('\\', path::Style::windows)); EXPECT_FALSE(path::is_separator('\\', path::Style::posix)); #ifdef _WIN32 EXPECT_TRUE(path::is_separator('\\')); #else EXPECT_FALSE(path::is_separator('\\')); #endif } TEST(Support, Path) { SmallVector paths; paths.push_back(""); paths.push_back("."); paths.push_back(".."); paths.push_back("foo"); paths.push_back("/"); paths.push_back("/foo"); paths.push_back("foo/"); paths.push_back("/foo/"); paths.push_back("foo/bar"); paths.push_back("/foo/bar"); paths.push_back("//net"); paths.push_back("//net/"); paths.push_back("//net/foo"); paths.push_back("///foo///"); paths.push_back("///foo///bar"); paths.push_back("/."); paths.push_back("./"); paths.push_back("/.."); paths.push_back("../"); paths.push_back("foo/."); paths.push_back("foo/.."); paths.push_back("foo/./"); paths.push_back("foo/./bar"); paths.push_back("foo/.."); paths.push_back("foo/../"); paths.push_back("foo/../bar"); paths.push_back("c:"); paths.push_back("c:/"); paths.push_back("c:foo"); paths.push_back("c:/foo"); paths.push_back("c:foo/"); paths.push_back("c:/foo/"); paths.push_back("c:/foo/bar"); paths.push_back("prn:"); paths.push_back("c:\\"); paths.push_back("c:foo"); paths.push_back("c:\\foo"); paths.push_back("c:foo\\"); paths.push_back("c:\\foo\\"); paths.push_back("c:\\foo/"); paths.push_back("c:/foo\\bar"); for (SmallVector::const_iterator i = paths.begin(), e = paths.end(); i != e; ++i) { SCOPED_TRACE(*i); SmallVector ComponentStack; for (sys::path::const_iterator ci = sys::path::begin(*i), ce = sys::path::end(*i); ci != ce; ++ci) { EXPECT_FALSE(ci->empty()); ComponentStack.push_back(*ci); } SmallVector ReverseComponentStack; for (sys::path::reverse_iterator ci = sys::path::rbegin(*i), ce = sys::path::rend(*i); ci != ce; ++ci) { EXPECT_FALSE(ci->empty()); ReverseComponentStack.push_back(*ci); } std::reverse(ReverseComponentStack.begin(), ReverseComponentStack.end()); EXPECT_THAT(ComponentStack, testing::ContainerEq(ReverseComponentStack)); // Crash test most of the API - since we're iterating over all of our paths // here there isn't really anything reasonable to assert on in the results. (void)path::has_root_path(*i); (void)path::root_path(*i); (void)path::has_root_name(*i); (void)path::root_name(*i); (void)path::has_root_directory(*i); (void)path::root_directory(*i); (void)path::has_parent_path(*i); (void)path::parent_path(*i); (void)path::has_filename(*i); (void)path::filename(*i); (void)path::has_stem(*i); (void)path::stem(*i); (void)path::has_extension(*i); (void)path::extension(*i); (void)path::is_absolute(*i); (void)path::is_relative(*i); SmallString<128> temp_store; temp_store = *i; ASSERT_NO_ERROR(fs::make_absolute(temp_store)); temp_store = *i; path::remove_filename(temp_store); temp_store = *i; path::replace_extension(temp_store, "ext"); StringRef filename(temp_store.begin(), temp_store.size()), stem, ext; stem = path::stem(filename); ext = path::extension(filename); EXPECT_EQ(*sys::path::rbegin(filename), (stem + ext).str()); path::native(*i, temp_store); } SmallString<32> Relative("foo.cpp"); sys::fs::make_absolute("/root", Relative); Relative[5] = '/'; // Fix up windows paths. ASSERT_EQ("/root/foo.cpp", Relative); } TEST(Support, FilenameParent) { EXPECT_EQ("/", path::filename("/")); EXPECT_EQ("", path::parent_path("/")); EXPECT_EQ("\\", path::filename("c:\\", path::Style::windows)); EXPECT_EQ("c:", path::parent_path("c:\\", path::Style::windows)); EXPECT_EQ("/", path::filename("///")); EXPECT_EQ("", path::parent_path("///")); EXPECT_EQ("\\", path::filename("c:\\\\", path::Style::windows)); EXPECT_EQ("c:", path::parent_path("c:\\\\", path::Style::windows)); EXPECT_EQ("bar", path::filename("/foo/bar")); EXPECT_EQ("/foo", path::parent_path("/foo/bar")); EXPECT_EQ("foo", path::filename("/foo")); EXPECT_EQ("/", path::parent_path("/foo")); EXPECT_EQ("foo", path::filename("foo")); EXPECT_EQ("", path::parent_path("foo")); EXPECT_EQ(".", path::filename("foo/")); EXPECT_EQ("foo", path::parent_path("foo/")); EXPECT_EQ("//net", path::filename("//net")); EXPECT_EQ("", path::parent_path("//net")); EXPECT_EQ("/", path::filename("//net/")); EXPECT_EQ("//net", path::parent_path("//net/")); EXPECT_EQ("foo", path::filename("//net/foo")); EXPECT_EQ("//net/", path::parent_path("//net/foo")); // These checks are just to make sure we do something reasonable with the // paths below. They are not meant to prescribe the one true interpretation of // these paths. Other decompositions (e.g. "//" -> "" + "//") are also // possible. EXPECT_EQ("/", path::filename("//")); EXPECT_EQ("", path::parent_path("//")); EXPECT_EQ("\\", path::filename("\\\\", path::Style::windows)); EXPECT_EQ("", path::parent_path("\\\\", path::Style::windows)); EXPECT_EQ("\\", path::filename("\\\\\\", path::Style::windows)); EXPECT_EQ("", path::parent_path("\\\\\\", path::Style::windows)); } static std::vector GetComponents(StringRef Path, path::Style S = path::Style::native) { return {path::begin(Path, S), path::end(Path)}; } TEST(Support, PathIterator) { EXPECT_THAT(GetComponents("/foo"), testing::ElementsAre("/", "foo")); EXPECT_THAT(GetComponents("/"), testing::ElementsAre("/")); EXPECT_THAT(GetComponents("//"), testing::ElementsAre("/")); EXPECT_THAT(GetComponents("///"), testing::ElementsAre("/")); EXPECT_THAT(GetComponents("c/d/e/foo.txt"), testing::ElementsAre("c", "d", "e", "foo.txt")); EXPECT_THAT(GetComponents(".c/.d/../."), testing::ElementsAre(".c", ".d", "..", ".")); EXPECT_THAT(GetComponents("/c/d/e/foo.txt"), testing::ElementsAre("/", "c", "d", "e", "foo.txt")); EXPECT_THAT(GetComponents("/.c/.d/../."), testing::ElementsAre("/", ".c", ".d", "..", ".")); EXPECT_THAT(GetComponents("c:\\c\\e\\foo.txt", path::Style::windows), testing::ElementsAre("c:", "\\", "c", "e", "foo.txt")); EXPECT_THAT(GetComponents("//net/"), testing::ElementsAre("//net", "/")); EXPECT_THAT(GetComponents("//net/c/foo.txt"), testing::ElementsAre("//net", "/", "c", "foo.txt")); } TEST(Support, AbsolutePathIteratorEnd) { // Trailing slashes are converted to '.' unless they are part of the root path. SmallVector, 4> Paths; Paths.emplace_back("/foo/", path::Style::native); Paths.emplace_back("/foo//", path::Style::native); Paths.emplace_back("//net/foo/", path::Style::native); Paths.emplace_back("c:\\foo\\", path::Style::windows); for (auto &Path : Paths) { SCOPED_TRACE(Path.first); StringRef LastComponent = *path::rbegin(Path.first, Path.second); EXPECT_EQ(".", LastComponent); } SmallVector, 3> RootPaths; RootPaths.emplace_back("/", path::Style::native); RootPaths.emplace_back("//net/", path::Style::native); RootPaths.emplace_back("c:\\", path::Style::windows); RootPaths.emplace_back("//net//", path::Style::native); RootPaths.emplace_back("c:\\\\", path::Style::windows); for (auto &Path : RootPaths) { SCOPED_TRACE(Path.first); StringRef LastComponent = *path::rbegin(Path.first, Path.second); EXPECT_EQ(1u, LastComponent.size()); EXPECT_TRUE(path::is_separator(LastComponent[0], Path.second)); } } TEST(Support, HomeDirectory) { std::string expected; #ifdef _WIN32 if (wchar_t const *path = ::_wgetenv(L"USERPROFILE")) { auto pathLen = ::wcslen(path); ArrayRef ref{reinterpret_cast(path), pathLen * sizeof(wchar_t)}; convertUTF16ToUTF8String(ref, expected); } #else if (char const *path = ::getenv("HOME")) expected = path; #endif // Do not try to test it if we don't know what to expect. // On Windows we use something better than env vars. if (!expected.empty()) { SmallString<128> HomeDir; auto status = path::home_directory(HomeDir); EXPECT_TRUE(status); EXPECT_EQ(expected, HomeDir); } } #ifdef LLVM_ON_UNIX TEST(Support, HomeDirectoryWithNoEnv) { std::string OriginalStorage; char const *OriginalEnv = ::getenv("HOME"); if (OriginalEnv) { // We're going to unset it, so make a copy and save a pointer to the copy // so that we can reset it at the end of the test. OriginalStorage = OriginalEnv; OriginalEnv = OriginalStorage.c_str(); } // Don't run the test if we have nothing to compare against. struct passwd *pw = getpwuid(getuid()); if (!pw || !pw->pw_dir) return; ::unsetenv("HOME"); EXPECT_EQ(nullptr, ::getenv("HOME")); std::string PwDir = pw->pw_dir; SmallString<128> HomeDir; auto status = path::home_directory(HomeDir); EXPECT_TRUE(status); EXPECT_EQ(PwDir, HomeDir); // Now put the environment back to its original state (meaning that if it was // unset before, we don't reset it). if (OriginalEnv) ::setenv("HOME", OriginalEnv, 1); } #endif TEST(Support, TempDirectory) { SmallString<32> TempDir; path::system_temp_directory(false, TempDir); EXPECT_TRUE(!TempDir.empty()); TempDir.clear(); path::system_temp_directory(true, TempDir); EXPECT_TRUE(!TempDir.empty()); } #ifdef _WIN32 static std::string path2regex(std::string Path) { size_t Pos = 0; while ((Pos = Path.find('\\', Pos)) != std::string::npos) { Path.replace(Pos, 1, "\\\\"); Pos += 2; } return Path; } /// Helper for running temp dir test in separated process. See below. #define EXPECT_TEMP_DIR(prepare, expected) \ EXPECT_EXIT( \ { \ prepare; \ SmallString<300> TempDir; \ path::system_temp_directory(true, TempDir); \ raw_os_ostream(std::cerr) << TempDir; \ std::exit(0); \ }, \ ::testing::ExitedWithCode(0), path2regex(expected)) TEST(SupportDeathTest, TempDirectoryOnWindows) { // In this test we want to check how system_temp_directory responds to // different values of specific env vars. To prevent corrupting env vars of // the current process all checks are done in separated processes. EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"C:\\OtherFolder"), "C:\\OtherFolder"); EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"C:/Unix/Path/Seperators"), "C:\\Unix\\Path\\Seperators"); EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"Local Path"), ".+\\Local Path$"); EXPECT_TEMP_DIR(_wputenv_s(L"TMP", L"F:\\TrailingSep\\"), "F:\\TrailingSep"); EXPECT_TEMP_DIR( _wputenv_s(L"TMP", L"C:\\2\x03C0r-\x00B5\x00B3\\\x2135\x2080"), "C:\\2\xCF\x80r-\xC2\xB5\xC2\xB3\\\xE2\x84\xB5\xE2\x82\x80"); // Test $TMP empty, $TEMP set. EXPECT_TEMP_DIR( { _wputenv_s(L"TMP", L""); _wputenv_s(L"TEMP", L"C:\\Valid\\Path"); }, "C:\\Valid\\Path"); // All related env vars empty EXPECT_TEMP_DIR( { _wputenv_s(L"TMP", L""); _wputenv_s(L"TEMP", L""); _wputenv_s(L"USERPROFILE", L""); }, "C:\\Temp"); // Test evn var / path with 260 chars. SmallString<270> Expected{"C:\\Temp\\AB\\123456789"}; while (Expected.size() < 260) Expected.append("\\DirNameWith19Charss"); ASSERT_EQ(260U, Expected.size()); EXPECT_TEMP_DIR(_putenv_s("TMP", Expected.c_str()), Expected.c_str()); } #endif class FileSystemTest : public testing::Test { protected: /// Unique temporary directory in which all created filesystem entities must /// be placed. It is removed at the end of each test (must be empty). SmallString<128> TestDirectory; SmallString<128> NonExistantFile; void SetUp() override { ASSERT_NO_ERROR( fs::createUniqueDirectory("file-system-test", TestDirectory)); // We don't care about this specific file. errs() << "Test Directory: " << TestDirectory << '\n'; errs().flush(); NonExistantFile = TestDirectory; // Even though this value is hardcoded, is a 128-bit GUID, so we should be // guaranteed that this file will never exist. sys::path::append(NonExistantFile, "1B28B495C16344CB9822E588CD4C3EF0"); } void TearDown() override { ASSERT_NO_ERROR(fs::remove(TestDirectory.str())); } }; TEST_F(FileSystemTest, Unique) { // Create a temp file. int FileDescriptor; SmallString<64> TempPath; ASSERT_NO_ERROR( fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); // The same file should return an identical unique id. fs::UniqueID F1, F2; ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F1)); ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F2)); ASSERT_EQ(F1, F2); // Different files should return different unique ids. int FileDescriptor2; SmallString<64> TempPath2; ASSERT_NO_ERROR( fs::createTemporaryFile("prefix", "temp", FileDescriptor2, TempPath2)); fs::UniqueID D; ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D)); ASSERT_NE(D, F1); ::close(FileDescriptor2); ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); // Two paths representing the same file on disk should still provide the // same unique id. We can test this by making a hard link. ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2))); fs::UniqueID D2; ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D2)); ASSERT_EQ(D2, F1); ::close(FileDescriptor); SmallString<128> Dir1; ASSERT_NO_ERROR( fs::createUniqueDirectory("dir1", Dir1)); ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F1)); ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F2)); ASSERT_EQ(F1, F2); SmallString<128> Dir2; ASSERT_NO_ERROR( fs::createUniqueDirectory("dir2", Dir2)); ASSERT_NO_ERROR(fs::getUniqueID(Dir2.c_str(), F2)); ASSERT_NE(F1, F2); ASSERT_NO_ERROR(fs::remove(Dir1)); ASSERT_NO_ERROR(fs::remove(Dir2)); ASSERT_NO_ERROR(fs::remove(TempPath2)); ASSERT_NO_ERROR(fs::remove(TempPath)); } TEST_F(FileSystemTest, RealPath) { ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/test1/test2/test3")); ASSERT_TRUE(fs::exists(Twine(TestDirectory) + "/test1/test2/test3")); SmallString<64> RealBase; SmallString<64> Expected; SmallString<64> Actual; // TestDirectory itself might be under a symlink or have been specified with // a different case than the existing temp directory. In such cases real_path // on the concatenated path will differ in the TestDirectory portion from // how we specified it. Make sure to compare against the real_path of the // TestDirectory, and not just the value of TestDirectory. ASSERT_NO_ERROR(fs::real_path(TestDirectory, RealBase)); path::native(Twine(RealBase) + "/test1/test2", Expected); ASSERT_NO_ERROR(fs::real_path( Twine(TestDirectory) + "/././test1/../test1/test2/./test3/..", Actual)); EXPECT_EQ(Expected, Actual); SmallString<64> HomeDir; // This can fail if $HOME is not set and getpwuid fails. bool Result = llvm::sys::path::home_directory(HomeDir); if (Result) { ASSERT_NO_ERROR(fs::real_path(HomeDir, Expected)); ASSERT_NO_ERROR(fs::real_path("~", Actual, true)); EXPECT_EQ(Expected, Actual); ASSERT_NO_ERROR(fs::real_path("~/", Actual, true)); EXPECT_EQ(Expected, Actual); } ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/test1")); } TEST_F(FileSystemTest, ExpandTilde) { SmallString<64> Expected; SmallString<64> Actual; SmallString<64> HomeDir; // This can fail if $HOME is not set and getpwuid fails. bool Result = llvm::sys::path::home_directory(HomeDir); if (Result) { fs::expand_tilde(HomeDir, Expected); fs::expand_tilde("~", Actual); EXPECT_EQ(Expected, Actual); #ifdef _WIN32 Expected += "\\foo"; fs::expand_tilde("~\\foo", Actual); #else Expected += "/foo"; fs::expand_tilde("~/foo", Actual); #endif EXPECT_EQ(Expected, Actual); } } #ifdef LLVM_ON_UNIX TEST_F(FileSystemTest, RealPathNoReadPerm) { SmallString<64> Expanded; ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/noreadperm")); ASSERT_TRUE(fs::exists(Twine(TestDirectory) + "/noreadperm")); fs::setPermissions(Twine(TestDirectory) + "/noreadperm", fs::no_perms); fs::setPermissions(Twine(TestDirectory) + "/noreadperm", fs::all_exe); ASSERT_NO_ERROR(fs::real_path(Twine(TestDirectory) + "/noreadperm", Expanded, false)); ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/noreadperm")); } #endif TEST_F(FileSystemTest, TempFileKeepDiscard) { // We can keep then discard. auto TempFileOrError = fs::TempFile::create(TestDirectory + "/test-%%%%"); ASSERT_TRUE((bool)TempFileOrError); fs::TempFile File = std::move(*TempFileOrError); ASSERT_FALSE((bool)File.keep(TestDirectory + "/keep")); ASSERT_FALSE((bool)File.discard()); ASSERT_TRUE(fs::exists(TestDirectory + "/keep")); ASSERT_NO_ERROR(fs::remove(TestDirectory + "/keep")); } TEST_F(FileSystemTest, TempFileDiscardDiscard) { // We can discard twice. auto TempFileOrError = fs::TempFile::create(TestDirectory + "/test-%%%%"); ASSERT_TRUE((bool)TempFileOrError); fs::TempFile File = std::move(*TempFileOrError); ASSERT_FALSE((bool)File.discard()); ASSERT_FALSE((bool)File.discard()); ASSERT_FALSE(fs::exists(TestDirectory + "/keep")); } TEST_F(FileSystemTest, TempFiles) { // Create a temp file. int FileDescriptor; SmallString<64> TempPath; ASSERT_NO_ERROR( fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); // Make sure it exists. ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); // Create another temp tile. int FD2; SmallString<64> TempPath2; ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD2, TempPath2)); ASSERT_TRUE(TempPath2.endswith(".temp")); ASSERT_NE(TempPath.str(), TempPath2.str()); fs::file_status A, B; ASSERT_NO_ERROR(fs::status(Twine(TempPath), A)); ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B)); EXPECT_FALSE(fs::equivalent(A, B)); ::close(FD2); // Remove Temp2. ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); ASSERT_EQ(fs::remove(Twine(TempPath2), false), errc::no_such_file_or_directory); std::error_code EC = fs::status(TempPath2.c_str(), B); EXPECT_EQ(EC, errc::no_such_file_or_directory); EXPECT_EQ(B.type(), fs::file_type::file_not_found); // Make sure Temp2 doesn't exist. ASSERT_EQ(fs::access(Twine(TempPath2), sys::fs::AccessMode::Exist), errc::no_such_file_or_directory); SmallString<64> TempPath3; ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "", TempPath3)); ASSERT_FALSE(TempPath3.endswith(".")); FileRemover Cleanup3(TempPath3); // Create a hard link to Temp1. ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2))); bool equal; ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal)); EXPECT_TRUE(equal); ASSERT_NO_ERROR(fs::status(Twine(TempPath), A)); ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B)); EXPECT_TRUE(fs::equivalent(A, B)); // Remove Temp1. ::close(FileDescriptor); ASSERT_NO_ERROR(fs::remove(Twine(TempPath))); // Remove the hard link. ASSERT_NO_ERROR(fs::remove(Twine(TempPath2))); // Make sure Temp1 doesn't exist. ASSERT_EQ(fs::access(Twine(TempPath), sys::fs::AccessMode::Exist), errc::no_such_file_or_directory); #ifdef _WIN32 // Path name > 260 chars should get an error. const char *Path270 = "abcdefghijklmnopqrstuvwxyz9abcdefghijklmnopqrstuvwxyz8" "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6" "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4" "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2" "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0"; EXPECT_EQ(fs::createUniqueFile(Path270, FileDescriptor, TempPath), errc::invalid_argument); // Relative path < 247 chars, no problem. const char *Path216 = "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6" "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4" "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2" "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0"; ASSERT_NO_ERROR(fs::createTemporaryFile(Path216, "", TempPath)); ASSERT_NO_ERROR(fs::remove(Twine(TempPath))); #endif } TEST_F(FileSystemTest, TempFileCollisions) { SmallString<128> TestDirectory; ASSERT_NO_ERROR( fs::createUniqueDirectory("CreateUniqueFileTest", TestDirectory)); FileRemover Cleanup(TestDirectory); SmallString<128> Model = TestDirectory; path::append(Model, "%.tmp"); SmallString<128> Path; std::vector TempFiles; auto TryCreateTempFile = [&]() { Expected T = fs::TempFile::create(Model); if (T) { TempFiles.push_back(std::move(*T)); return true; } else { logAllUnhandledErrors(T.takeError(), errs(), "Failed to create temporary file: "); return false; } }; // We should be able to create exactly 16 temporary files. for (int i = 0; i < 16; ++i) EXPECT_TRUE(TryCreateTempFile()); EXPECT_FALSE(TryCreateTempFile()); for (fs::TempFile &T : TempFiles) cantFail(T.discard()); } TEST_F(FileSystemTest, CreateDir) { ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo")); ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo")); ASSERT_EQ(fs::create_directory(Twine(TestDirectory) + "foo", false), errc::file_exists); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "foo")); #ifdef LLVM_ON_UNIX // Set a 0000 umask so that we can test our directory permissions. mode_t OldUmask = ::umask(0000); fs::file_status Status; ASSERT_NO_ERROR( fs::create_directory(Twine(TestDirectory) + "baz500", false, fs::perms::owner_read | fs::perms::owner_exe)); ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz500", Status)); ASSERT_EQ(Status.permissions() & fs::perms::all_all, fs::perms::owner_read | fs::perms::owner_exe); ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "baz777", false, fs::perms::all_all)); ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz777", Status)); ASSERT_EQ(Status.permissions() & fs::perms::all_all, fs::perms::all_all); // Restore umask to be safe. ::umask(OldUmask); #endif #ifdef _WIN32 // Prove that create_directories() can handle a pathname > 248 characters, // which is the documented limit for CreateDirectory(). // (248 is MAX_PATH subtracting room for an 8.3 filename.) // Generate a directory path guaranteed to fall into that range. size_t TmpLen = TestDirectory.size(); const char *OneDir = "\\123456789"; size_t OneDirLen = strlen(OneDir); ASSERT_LT(OneDirLen, 12U); size_t NLevels = ((248 - TmpLen) / OneDirLen) + 1; SmallString<260> LongDir(TestDirectory); for (size_t I = 0; I < NLevels; ++I) LongDir.append(OneDir); ASSERT_NO_ERROR(fs::create_directories(Twine(LongDir))); ASSERT_NO_ERROR(fs::create_directories(Twine(LongDir))); ASSERT_EQ(fs::create_directories(Twine(LongDir), false), errc::file_exists); // Tidy up, "recursively" removing the directories. StringRef ThisDir(LongDir); for (size_t J = 0; J < NLevels; ++J) { ASSERT_NO_ERROR(fs::remove(ThisDir)); ThisDir = path::parent_path(ThisDir); } // Also verify that paths with Unix separators are handled correctly. std::string LongPathWithUnixSeparators(TestDirectory.str()); // Add at least one subdirectory to TestDirectory, and replace slashes with // backslashes do { LongPathWithUnixSeparators.append("/DirNameWith19Charss"); } while (LongPathWithUnixSeparators.size() < 260); std::replace(LongPathWithUnixSeparators.begin(), LongPathWithUnixSeparators.end(), '\\', '/'); ASSERT_NO_ERROR(fs::create_directories(Twine(LongPathWithUnixSeparators))); // cleanup ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/DirNameWith19Charss")); // Similarly for a relative pathname. Need to set the current directory to // TestDirectory so that the one we create ends up in the right place. char PreviousDir[260]; size_t PreviousDirLen = ::GetCurrentDirectoryA(260, PreviousDir); ASSERT_GT(PreviousDirLen, 0U); ASSERT_LT(PreviousDirLen, 260U); ASSERT_NE(::SetCurrentDirectoryA(TestDirectory.c_str()), 0); LongDir.clear(); // Generate a relative directory name with absolute length > 248. size_t LongDirLen = 249 - TestDirectory.size(); LongDir.assign(LongDirLen, 'a'); ASSERT_NO_ERROR(fs::create_directory(Twine(LongDir))); // While we're here, prove that .. and . handling works in these long paths. const char *DotDotDirs = "\\..\\.\\b"; LongDir.append(DotDotDirs); ASSERT_NO_ERROR(fs::create_directory("b")); ASSERT_EQ(fs::create_directory(Twine(LongDir), false), errc::file_exists); // And clean up. ASSERT_NO_ERROR(fs::remove("b")); ASSERT_NO_ERROR(fs::remove( Twine(LongDir.substr(0, LongDir.size() - strlen(DotDotDirs))))); ASSERT_NE(::SetCurrentDirectoryA(PreviousDir), 0); #endif } TEST_F(FileSystemTest, DirectoryIteration) { std::error_code ec; for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec)) ASSERT_NO_ERROR(ec); // Create a known hierarchy to recurse over. ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/recursive/a0/aa1")); ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/recursive/a0/ab1")); ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) + "/recursive/dontlookhere/da1")); ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/recursive/z0/za1")); ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/recursive/pop/p1")); typedef std::vector v_t; v_t visited; for (fs::recursive_directory_iterator i(Twine(TestDirectory) + "/recursive", ec), e; i != e; i.increment(ec)){ ASSERT_NO_ERROR(ec); if (path::filename(i->path()) == "p1") { i.pop(); // FIXME: recursive_directory_iterator should be more robust. if (i == e) break; } if (path::filename(i->path()) == "dontlookhere") i.no_push(); visited.push_back(path::filename(i->path())); } v_t::const_iterator a0 = find(visited, "a0"); v_t::const_iterator aa1 = find(visited, "aa1"); v_t::const_iterator ab1 = find(visited, "ab1"); v_t::const_iterator dontlookhere = find(visited, "dontlookhere"); v_t::const_iterator da1 = find(visited, "da1"); v_t::const_iterator z0 = find(visited, "z0"); v_t::const_iterator za1 = find(visited, "za1"); v_t::const_iterator pop = find(visited, "pop"); v_t::const_iterator p1 = find(visited, "p1"); // Make sure that each path was visited correctly. ASSERT_NE(a0, visited.end()); ASSERT_NE(aa1, visited.end()); ASSERT_NE(ab1, visited.end()); ASSERT_NE(dontlookhere, visited.end()); ASSERT_EQ(da1, visited.end()); // Not visited. ASSERT_NE(z0, visited.end()); ASSERT_NE(za1, visited.end()); ASSERT_NE(pop, visited.end()); ASSERT_EQ(p1, visited.end()); // Not visited. // Make sure that parents were visited before children. No other ordering // guarantees can be made across siblings. ASSERT_LT(a0, aa1); ASSERT_LT(a0, ab1); ASSERT_LT(z0, za1); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/aa1")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/ab1")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0")); ASSERT_NO_ERROR( fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere/da1")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop/p1")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0/za1")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive")); // Test recursive_directory_iterator level() ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/reclevel/a/b/c")); fs::recursive_directory_iterator I(Twine(TestDirectory) + "/reclevel", ec), E; for (int l = 0; I != E; I.increment(ec), ++l) { ASSERT_NO_ERROR(ec); EXPECT_EQ(I.level(), l); } EXPECT_EQ(I, E); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a/b/c")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a/b")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel/a")); ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/reclevel")); } #ifdef LLVM_ON_UNIX TEST_F(FileSystemTest, BrokenSymlinkDirectoryIteration) { // Create a known hierarchy to recurse over. ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) + "/symlink")); ASSERT_NO_ERROR( fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/a")); ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/symlink/b/bb")); ASSERT_NO_ERROR( fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/b/ba")); ASSERT_NO_ERROR( fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/b/bc")); ASSERT_NO_ERROR( fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/c")); ASSERT_NO_ERROR( fs::create_directories(Twine(TestDirectory) + "/symlink/d/dd/ddd")); ASSERT_NO_ERROR(fs::create_link(Twine(TestDirectory) + "/symlink/d/dd", Twine(TestDirectory) + "/symlink/d/da")); ASSERT_NO_ERROR( fs::create_link("no_such_file", Twine(TestDirectory) + "/symlink/e")); typedef std::vector v_t; v_t VisitedNonBrokenSymlinks; v_t VisitedBrokenSymlinks; std::error_code ec; using testing::UnorderedElementsAre; using testing::UnorderedElementsAreArray; // Broken symbol links are expected to throw an error. for (fs::directory_iterator i(Twine(TestDirectory) + "/symlink", ec), e; i != e; i.increment(ec)) { ASSERT_NO_ERROR(ec); if (i->status().getError() == std::make_error_code(std::errc::no_such_file_or_directory)) { VisitedBrokenSymlinks.push_back(path::filename(i->path())); continue; } VisitedNonBrokenSymlinks.push_back(path::filename(i->path())); } EXPECT_THAT(VisitedNonBrokenSymlinks, UnorderedElementsAre("b", "d")); VisitedNonBrokenSymlinks.clear(); EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre("a", "c", "e")); VisitedBrokenSymlinks.clear(); // Broken symbol links are expected to throw an error. for (fs::recursive_directory_iterator i( Twine(TestDirectory) + "/symlink", ec), e; i != e; i.increment(ec)) { ASSERT_NO_ERROR(ec); if (i->status().getError() == std::make_error_code(std::errc::no_such_file_or_directory)) { VisitedBrokenSymlinks.push_back(path::filename(i->path())); continue; } VisitedNonBrokenSymlinks.push_back(path::filename(i->path())); } EXPECT_THAT(VisitedNonBrokenSymlinks, UnorderedElementsAre("b", "bb", "d", "da", "dd", "ddd", "ddd")); VisitedNonBrokenSymlinks.clear(); EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre("a", "ba", "bc", "c", "e")); VisitedBrokenSymlinks.clear(); for (fs::recursive_directory_iterator i( Twine(TestDirectory) + "/symlink", ec, /*follow_symlinks=*/false), e; i != e; i.increment(ec)) { ASSERT_NO_ERROR(ec); if (i->status().getError() == std::make_error_code(std::errc::no_such_file_or_directory)) { VisitedBrokenSymlinks.push_back(path::filename(i->path())); continue; } VisitedNonBrokenSymlinks.push_back(path::filename(i->path())); } EXPECT_THAT(VisitedNonBrokenSymlinks, UnorderedElementsAreArray({"a", "b", "ba", "bb", "bc", "c", "d", "da", "dd", "ddd", "e"})); VisitedNonBrokenSymlinks.clear(); EXPECT_THAT(VisitedBrokenSymlinks, UnorderedElementsAre()); VisitedBrokenSymlinks.clear(); ASSERT_NO_ERROR(fs::remove_directories(Twine(TestDirectory) + "/symlink")); } #endif TEST_F(FileSystemTest, Remove) { SmallString<64> BaseDir; SmallString<64> Paths[4]; int fds[4]; ASSERT_NO_ERROR(fs::createUniqueDirectory("fs_remove", BaseDir)); ASSERT_NO_ERROR(fs::create_directories(Twine(BaseDir) + "/foo/bar/baz")); ASSERT_NO_ERROR(fs::create_directories(Twine(BaseDir) + "/foo/bar/buzz")); ASSERT_NO_ERROR(fs::createUniqueFile( Twine(BaseDir) + "/foo/bar/baz/%%%%%%.tmp", fds[0], Paths[0])); ASSERT_NO_ERROR(fs::createUniqueFile( Twine(BaseDir) + "/foo/bar/baz/%%%%%%.tmp", fds[1], Paths[1])); ASSERT_NO_ERROR(fs::createUniqueFile( Twine(BaseDir) + "/foo/bar/buzz/%%%%%%.tmp", fds[2], Paths[2])); ASSERT_NO_ERROR(fs::createUniqueFile( Twine(BaseDir) + "/foo/bar/buzz/%%%%%%.tmp", fds[3], Paths[3])); for (int fd : fds) ::close(fd); EXPECT_TRUE(fs::exists(Twine(BaseDir) + "/foo/bar/baz")); EXPECT_TRUE(fs::exists(Twine(BaseDir) + "/foo/bar/buzz")); EXPECT_TRUE(fs::exists(Paths[0])); EXPECT_TRUE(fs::exists(Paths[1])); EXPECT_TRUE(fs::exists(Paths[2])); EXPECT_TRUE(fs::exists(Paths[3])); ASSERT_NO_ERROR(fs::remove_directories("D:/footest")); ASSERT_NO_ERROR(fs::remove_directories(BaseDir)); ASSERT_FALSE(fs::exists(BaseDir)); } #ifdef _WIN32 TEST_F(FileSystemTest, CarriageReturn) { SmallString<128> FilePathname(TestDirectory); std::error_code EC; path::append(FilePathname, "test"); { raw_fd_ostream File(FilePathname, EC, sys::fs::F_Text); ASSERT_NO_ERROR(EC); File << '\n'; } { auto Buf = MemoryBuffer::getFile(FilePathname.str()); EXPECT_TRUE((bool)Buf); EXPECT_EQ(Buf.get()->getBuffer(), "\r\n"); } { raw_fd_ostream File(FilePathname, EC, sys::fs::F_None); ASSERT_NO_ERROR(EC); File << '\n'; } { auto Buf = MemoryBuffer::getFile(FilePathname.str()); EXPECT_TRUE((bool)Buf); EXPECT_EQ(Buf.get()->getBuffer(), "\n"); } ASSERT_NO_ERROR(fs::remove(Twine(FilePathname))); } #endif TEST_F(FileSystemTest, Resize) { int FD; SmallString<64> TempPath; ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); ASSERT_NO_ERROR(fs::resize_file(FD, 123)); fs::file_status Status; ASSERT_NO_ERROR(fs::status(FD, Status)); ASSERT_EQ(Status.getSize(), 123U); ::close(FD); ASSERT_NO_ERROR(fs::remove(TempPath)); } TEST_F(FileSystemTest, MD5) { int FD; SmallString<64> TempPath; ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); StringRef Data("abcdefghijklmnopqrstuvwxyz"); ASSERT_EQ(write(FD, Data.data(), Data.size()), static_cast(Data.size())); lseek(FD, 0, SEEK_SET); auto Hash = fs::md5_contents(FD); ::close(FD); ASSERT_NO_ERROR(Hash.getError()); EXPECT_STREQ("c3fcd3d76192e4007dfb496cca67e13b", Hash->digest().c_str()); } TEST_F(FileSystemTest, FileMapping) { // Create a temp file. int FileDescriptor; SmallString<64> TempPath; ASSERT_NO_ERROR( fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); unsigned Size = 4096; ASSERT_NO_ERROR(fs::resize_file(FileDescriptor, Size)); // Map in temp file and add some content std::error_code EC; StringRef Val("hello there"); { fs::mapped_file_region mfr(FileDescriptor, fs::mapped_file_region::readwrite, Size, 0, EC); ASSERT_NO_ERROR(EC); std::copy(Val.begin(), Val.end(), mfr.data()); // Explicitly add a 0. mfr.data()[Val.size()] = 0; // Unmap temp file } ASSERT_EQ(close(FileDescriptor), 0); // Map it back in read-only { int FD; EC = fs::openFileForRead(Twine(TempPath), FD); ASSERT_NO_ERROR(EC); fs::mapped_file_region mfr(FD, fs::mapped_file_region::readonly, Size, 0, EC); ASSERT_NO_ERROR(EC); // Verify content EXPECT_EQ(StringRef(mfr.const_data()), Val); // Unmap temp file fs::mapped_file_region m(FD, fs::mapped_file_region::readonly, Size, 0, EC); ASSERT_NO_ERROR(EC); ASSERT_EQ(close(FD), 0); } ASSERT_NO_ERROR(fs::remove(TempPath)); } TEST(Support, NormalizePath) { using TestTuple = std::tuple; std::vector Tests; Tests.emplace_back("a", "a", "a"); Tests.emplace_back("a/b", "a\\b", "a/b"); Tests.emplace_back("a\\b", "a\\b", "a/b"); Tests.emplace_back("a\\\\b", "a\\\\b", "a\\\\b"); Tests.emplace_back("\\a", "\\a", "/a"); Tests.emplace_back("a\\", "a\\", "a/"); for (auto &T : Tests) { SmallString<64> Win(std::get<0>(T)); SmallString<64> Posix(Win); path::native(Win, path::Style::windows); path::native(Posix, path::Style::posix); EXPECT_EQ(std::get<1>(T), Win); EXPECT_EQ(std::get<2>(T), Posix); } #if defined(_WIN32) SmallString<64> PathHome; path::home_directory(PathHome); const char *Path7a = "~/aaa"; SmallString<64> Path7(Path7a); path::native(Path7); EXPECT_TRUE(Path7.endswith("\\aaa")); EXPECT_TRUE(Path7.startswith(PathHome)); EXPECT_EQ(Path7.size(), PathHome.size() + strlen(Path7a + 1)); const char *Path8a = "~"; SmallString<64> Path8(Path8a); path::native(Path8); EXPECT_EQ(Path8, PathHome); const char *Path9a = "~aaa"; SmallString<64> Path9(Path9a); path::native(Path9); EXPECT_EQ(Path9, "~aaa"); const char *Path10a = "aaa/~/b"; SmallString<64> Path10(Path10a); path::native(Path10); EXPECT_EQ(Path10, "aaa\\~\\b"); #endif } TEST(Support, RemoveLeadingDotSlash) { StringRef Path1("././/foolz/wat"); StringRef Path2("./////"); Path1 = path::remove_leading_dotslash(Path1); EXPECT_EQ(Path1, "foolz/wat"); Path2 = path::remove_leading_dotslash(Path2); EXPECT_EQ(Path2, ""); } static std::string remove_dots(StringRef path, bool remove_dot_dot, path::Style style) { SmallString<256> buffer(path); path::remove_dots(buffer, remove_dot_dot, style); return buffer.str(); } TEST(Support, RemoveDots) { EXPECT_EQ("foolz\\wat", remove_dots(".\\.\\\\foolz\\wat", false, path::Style::windows)); EXPECT_EQ("", remove_dots(".\\\\\\\\\\", false, path::Style::windows)); EXPECT_EQ("a\\..\\b\\c", remove_dots(".\\a\\..\\b\\c", false, path::Style::windows)); EXPECT_EQ("b\\c", remove_dots(".\\a\\..\\b\\c", true, path::Style::windows)); EXPECT_EQ("c", remove_dots(".\\.\\c", true, path::Style::windows)); EXPECT_EQ("..\\a\\c", remove_dots("..\\a\\b\\..\\c", true, path::Style::windows)); EXPECT_EQ("..\\..\\a\\c", remove_dots("..\\..\\a\\b\\..\\c", true, path::Style::windows)); SmallString<64> Path1(".\\.\\c"); EXPECT_TRUE(path::remove_dots(Path1, true, path::Style::windows)); EXPECT_EQ("c", Path1); EXPECT_EQ("foolz/wat", remove_dots("././/foolz/wat", false, path::Style::posix)); EXPECT_EQ("", remove_dots("./////", false, path::Style::posix)); EXPECT_EQ("a/../b/c", remove_dots("./a/../b/c", false, path::Style::posix)); EXPECT_EQ("b/c", remove_dots("./a/../b/c", true, path::Style::posix)); EXPECT_EQ("c", remove_dots("././c", true, path::Style::posix)); EXPECT_EQ("../a/c", remove_dots("../a/b/../c", true, path::Style::posix)); EXPECT_EQ("../../a/c", remove_dots("../../a/b/../c", true, path::Style::posix)); EXPECT_EQ("/a/c", remove_dots("/../../a/c", true, path::Style::posix)); EXPECT_EQ("/a/c", remove_dots("/../a/b//../././/c", true, path::Style::posix)); SmallString<64> Path2("././c"); EXPECT_TRUE(path::remove_dots(Path2, true, path::Style::posix)); EXPECT_EQ("c", Path2); } TEST(Support, ReplacePathPrefix) { SmallString<64> Path1("/foo"); SmallString<64> Path2("/old/foo"); SmallString<64> OldPrefix("/old"); SmallString<64> NewPrefix("/new"); SmallString<64> NewPrefix2("/longernew"); SmallString<64> EmptyPrefix(""); SmallString<64> Path = Path1; path::replace_path_prefix(Path, OldPrefix, NewPrefix); EXPECT_EQ(Path, "/foo"); Path = Path2; path::replace_path_prefix(Path, OldPrefix, NewPrefix); EXPECT_EQ(Path, "/new/foo"); Path = Path2; path::replace_path_prefix(Path, OldPrefix, NewPrefix2); EXPECT_EQ(Path, "/longernew/foo"); Path = Path1; path::replace_path_prefix(Path, EmptyPrefix, NewPrefix); EXPECT_EQ(Path, "/new/foo"); Path = Path2; path::replace_path_prefix(Path, OldPrefix, EmptyPrefix); EXPECT_EQ(Path, "/foo"); } TEST_F(FileSystemTest, OpenFileForRead) { // Create a temp file. int FileDescriptor; SmallString<64> TempPath; ASSERT_NO_ERROR( fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath)); FileRemover Cleanup(TempPath); // Make sure it exists. ASSERT_TRUE(sys::fs::exists(Twine(TempPath))); // Open the file for read int FileDescriptor2; SmallString<64> ResultPath; ASSERT_NO_ERROR(fs::openFileForRead(Twine(TempPath), FileDescriptor2, fs::OF_None, &ResultPath)) // If we succeeded, check that the paths are the same (modulo case): if (!ResultPath.empty()) { // The paths returned by createTemporaryFile and getPathFromOpenFD // should reference the same file on disk. fs::UniqueID D1, D2; ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), D1)); ASSERT_NO_ERROR(fs::getUniqueID(Twine(ResultPath), D2)); ASSERT_EQ(D1, D2); } ::close(FileDescriptor); ::close(FileDescriptor2); #ifdef _WIN32 // Since Windows Vista, file access time is not updated by default. // This is instead updated manually by openFileForRead. // https://blogs.technet.microsoft.com/filecab/2006/11/07/disabling-last-access-time-in-windows-vista-to-improve-ntfs-performance/ // This part of the unit test is Windows specific as the updating of // access times can be disabled on Linux using /etc/fstab. // Set access time to UNIX epoch. ASSERT_NO_ERROR(sys::fs::openFileForWrite(Twine(TempPath), FileDescriptor, fs::CD_OpenExisting)); TimePoint<> Epoch(std::chrono::milliseconds(0)); ASSERT_NO_ERROR(fs::setLastAccessAndModificationTime(FileDescriptor, Epoch)); ::close(FileDescriptor); // Open the file and ensure access time is updated, when forced. ASSERT_NO_ERROR(fs::openFileForRead(Twine(TempPath), FileDescriptor, fs::OF_UpdateAtime, &ResultPath)); sys::fs::file_status Status; ASSERT_NO_ERROR(sys::fs::status(FileDescriptor, Status)); auto FileAccessTime = Status.getLastAccessedTime(); ASSERT_NE(Epoch, FileAccessTime); ::close(FileDescriptor); // Ideally this test would include a case when ATime is not forced to update, // however the expected behaviour will differ depending on the configuration // of the Windows file system. #endif } static void createFileWithData(const Twine &Path, bool ShouldExistBefore, fs::CreationDisposition Disp, StringRef Data) { int FD; ASSERT_EQ(ShouldExistBefore, fs::exists(Path)); ASSERT_NO_ERROR(fs::openFileForWrite(Path, FD, Disp)); FileDescriptorCloser Closer(FD); ASSERT_TRUE(fs::exists(Path)); ASSERT_EQ(Data.size(), (size_t)write(FD, Data.data(), Data.size())); } static void verifyFileContents(const Twine &Path, StringRef Contents) { auto Buffer = MemoryBuffer::getFile(Path); ASSERT_TRUE((bool)Buffer); StringRef Data = Buffer.get()->getBuffer(); ASSERT_EQ(Data, Contents); } TEST_F(FileSystemTest, CreateNew) { int FD; Optional Closer; // Succeeds if the file does not exist. ASSERT_FALSE(fs::exists(NonExistantFile)); ASSERT_NO_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateNew)); ASSERT_TRUE(fs::exists(NonExistantFile)); FileRemover Cleanup(NonExistantFile); Closer.emplace(FD); // And creates a file of size 0. sys::fs::file_status Status; ASSERT_NO_ERROR(sys::fs::status(FD, Status)); EXPECT_EQ(0ULL, Status.getSize()); // Close this first, before trying to re-open the file. Closer.reset(); // But fails if the file does exist. ASSERT_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateNew)); } TEST_F(FileSystemTest, CreateAlways) { int FD; Optional Closer; // Succeeds if the file does not exist. ASSERT_FALSE(fs::exists(NonExistantFile)); ASSERT_NO_ERROR( fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateAlways)); Closer.emplace(FD); ASSERT_TRUE(fs::exists(NonExistantFile)); FileRemover Cleanup(NonExistantFile); // And creates a file of size 0. uint64_t FileSize; ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(0ULL, FileSize); // If we write some data to it re-create it with CreateAlways, it succeeds and // truncates to 0 bytes. ASSERT_EQ(4, write(FD, "Test", 4)); Closer.reset(); ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(4ULL, FileSize); ASSERT_NO_ERROR( fs::openFileForWrite(NonExistantFile, FD, fs::CD_CreateAlways)); Closer.emplace(FD); ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(0ULL, FileSize); } TEST_F(FileSystemTest, OpenExisting) { int FD; // Fails if the file does not exist. ASSERT_FALSE(fs::exists(NonExistantFile)); ASSERT_ERROR(fs::openFileForWrite(NonExistantFile, FD, fs::CD_OpenExisting)); ASSERT_FALSE(fs::exists(NonExistantFile)); // Make a dummy file now so that we can try again when the file does exist. createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); FileRemover Cleanup(NonExistantFile); uint64_t FileSize; ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(4ULL, FileSize); // If we re-create it with different data, it overwrites rather than // appending. createFileWithData(NonExistantFile, true, fs::CD_OpenExisting, "Buzz"); verifyFileContents(NonExistantFile, "Buzz"); } TEST_F(FileSystemTest, OpenAlways) { // Succeeds if the file does not exist. createFileWithData(NonExistantFile, false, fs::CD_OpenAlways, "Fizz"); FileRemover Cleanup(NonExistantFile); uint64_t FileSize; ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(4ULL, FileSize); // Now re-open it and write again, verifying the contents get over-written. createFileWithData(NonExistantFile, true, fs::CD_OpenAlways, "Bu"); verifyFileContents(NonExistantFile, "Buzz"); } TEST_F(FileSystemTest, AppendSetsCorrectFileOffset) { fs::CreationDisposition Disps[] = {fs::CD_CreateAlways, fs::CD_OpenAlways, fs::CD_OpenExisting}; // Write some data and re-open it with every possible disposition (this is a // hack that shouldn't work, but is left for compatibility. F_Append // overrides // the specified disposition. for (fs::CreationDisposition Disp : Disps) { int FD; Optional Closer; createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); FileRemover Cleanup(NonExistantFile); uint64_t FileSize; ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(4ULL, FileSize); ASSERT_NO_ERROR( fs::openFileForWrite(NonExistantFile, FD, Disp, fs::OF_Append)); Closer.emplace(FD); ASSERT_NO_ERROR(sys::fs::file_size(NonExistantFile, FileSize)); ASSERT_EQ(4ULL, FileSize); ASSERT_EQ(4, write(FD, "Buzz", 4)); Closer.reset(); verifyFileContents(NonExistantFile, "FizzBuzz"); } } static void verifyRead(int FD, StringRef Data, bool ShouldSucceed) { std::vector Buffer; Buffer.resize(Data.size()); int Result = ::read(FD, Buffer.data(), Buffer.size()); if (ShouldSucceed) { ASSERT_EQ((size_t)Result, Data.size()); ASSERT_EQ(Data, StringRef(Buffer.data(), Buffer.size())); } else { ASSERT_EQ(-1, Result); ASSERT_EQ(EBADF, errno); } } static void verifyWrite(int FD, StringRef Data, bool ShouldSucceed) { int Result = ::write(FD, Data.data(), Data.size()); if (ShouldSucceed) ASSERT_EQ((size_t)Result, Data.size()); else { ASSERT_EQ(-1, Result); ASSERT_EQ(EBADF, errno); } } TEST_F(FileSystemTest, ReadOnlyFileCantWrite) { createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); FileRemover Cleanup(NonExistantFile); int FD; ASSERT_NO_ERROR(fs::openFileForRead(NonExistantFile, FD)); FileDescriptorCloser Closer(FD); verifyWrite(FD, "Buzz", false); verifyRead(FD, "Fizz", true); } TEST_F(FileSystemTest, WriteOnlyFileCantRead) { createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); FileRemover Cleanup(NonExistantFile); int FD; ASSERT_NO_ERROR( fs::openFileForWrite(NonExistantFile, FD, fs::CD_OpenExisting)); FileDescriptorCloser Closer(FD); verifyRead(FD, "Fizz", false); verifyWrite(FD, "Buzz", true); } TEST_F(FileSystemTest, ReadWriteFileCanReadOrWrite) { createFileWithData(NonExistantFile, false, fs::CD_CreateNew, "Fizz"); FileRemover Cleanup(NonExistantFile); int FD; ASSERT_NO_ERROR(fs::openFileForReadWrite(NonExistantFile, FD, fs::CD_OpenExisting, fs::OF_None)); FileDescriptorCloser Closer(FD); verifyRead(FD, "Fizz", true); verifyWrite(FD, "Buzz", true); } TEST_F(FileSystemTest, set_current_path) { SmallString<128> path; ASSERT_NO_ERROR(fs::current_path(path)); ASSERT_NE(TestDirectory, path); struct RestorePath { SmallString<128> path; RestorePath(const SmallString<128> &path) : path(path) {} ~RestorePath() { fs::set_current_path(path); } } restore_path(path); ASSERT_NO_ERROR(fs::set_current_path(TestDirectory)); ASSERT_NO_ERROR(fs::current_path(path)); fs::UniqueID D1, D2; ASSERT_NO_ERROR(fs::getUniqueID(TestDirectory, D1)); ASSERT_NO_ERROR(fs::getUniqueID(path, D2)); ASSERT_EQ(D1, D2) << "D1: " << TestDirectory << "\nD2: " << path; } TEST_F(FileSystemTest, permissions) { int FD; SmallString<64> TempPath; ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD, TempPath)); FileRemover Cleanup(TempPath); // Make sure it exists. ASSERT_TRUE(fs::exists(Twine(TempPath))); auto CheckPermissions = [&](fs::perms Expected) { ErrorOr Actual = fs::getPermissions(TempPath); return Actual && *Actual == Expected; }; std::error_code NoError; EXPECT_EQ(fs::setPermissions(TempPath, fs::all_all), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read | fs::all_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::all_read | fs::all_exe)); #if defined(_WIN32) fs::perms ReadOnly = fs::all_read | fs::all_exe; EXPECT_EQ(fs::setPermissions(TempPath, fs::no_perms), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_read), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_write), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_exe), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_all), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_read), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_write), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_exe), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_all), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_read), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_write), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_exe), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_all), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_write), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_exe), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::set_gid_on_exe), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe | fs::set_gid_on_exe | fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, ReadOnly | fs::set_uid_on_exe | fs::set_gid_on_exe | fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(ReadOnly)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms), NoError); EXPECT_TRUE(CheckPermissions(fs::all_all)); #else EXPECT_EQ(fs::setPermissions(TempPath, fs::no_perms), NoError); EXPECT_TRUE(CheckPermissions(fs::no_perms)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_read), NoError); EXPECT_TRUE(CheckPermissions(fs::owner_read)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_write), NoError); EXPECT_TRUE(CheckPermissions(fs::owner_write)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::owner_exe)); EXPECT_EQ(fs::setPermissions(TempPath, fs::owner_all), NoError); EXPECT_TRUE(CheckPermissions(fs::owner_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_read), NoError); EXPECT_TRUE(CheckPermissions(fs::group_read)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_write), NoError); EXPECT_TRUE(CheckPermissions(fs::group_write)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::group_exe)); EXPECT_EQ(fs::setPermissions(TempPath, fs::group_all), NoError); EXPECT_TRUE(CheckPermissions(fs::group_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_read), NoError); EXPECT_TRUE(CheckPermissions(fs::others_read)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_write), NoError); EXPECT_TRUE(CheckPermissions(fs::others_write)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::others_exe)); EXPECT_EQ(fs::setPermissions(TempPath, fs::others_all), NoError); EXPECT_TRUE(CheckPermissions(fs::others_all)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read), NoError); EXPECT_TRUE(CheckPermissions(fs::all_read)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_write), NoError); EXPECT_TRUE(CheckPermissions(fs::all_write)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::all_exe)); EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::set_uid_on_exe)); EXPECT_EQ(fs::setPermissions(TempPath, fs::set_gid_on_exe), NoError); EXPECT_TRUE(CheckPermissions(fs::set_gid_on_exe)); // Modern BSDs require root to set the sticky bit on files. // AIX without root will mask off (i.e., lose) the sticky bit on files. #if !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && \ !defined(_AIX) EXPECT_EQ(fs::setPermissions(TempPath, fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(fs::sticky_bit)); EXPECT_EQ(fs::setPermissions(TempPath, fs::set_uid_on_exe | fs::set_gid_on_exe | fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(fs::set_uid_on_exe | fs::set_gid_on_exe | fs::sticky_bit)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_read | fs::set_uid_on_exe | fs::set_gid_on_exe | fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(fs::all_read | fs::set_uid_on_exe | fs::set_gid_on_exe | fs::sticky_bit)); EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms), NoError); EXPECT_TRUE(CheckPermissions(fs::all_perms)); #endif // !FreeBSD && !NetBSD && !OpenBSD && !AIX EXPECT_EQ(fs::setPermissions(TempPath, fs::all_perms & ~fs::sticky_bit), NoError); EXPECT_TRUE(CheckPermissions(fs::all_perms & ~fs::sticky_bit)); #endif } } // anonymous namespace