1 //===-- Unittests for fchdir ----------------------------------------------===// 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 "src/errno/libc_errno.h" 10 #include "src/fcntl/open.h" 11 #include "src/unistd/close.h" 12 #include "src/unistd/fchdir.h" 13 #include "test/UnitTest/ErrnoSetterMatcher.h" 14 #include "test/UnitTest/Test.h" 15 16 #include "hdr/fcntl_macros.h" 17 18 TEST(LlvmLibcChdirTest, ChangeAndOpen) { 19 // The idea of this test is that we will first open an existing test file 20 // without changing the directory to make sure it exists. Next, we change 21 // directory and open the same file to make sure that the "fchdir" operation 22 // succeeded. 23 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds; 24 constexpr const char *FILENAME = "testdata"; 25 auto TEST_DIR = libc_make_test_file_path(FILENAME); 26 constexpr const char *FILENAME2 = "testdata/fchdir.test"; 27 auto TEST_FILE = libc_make_test_file_path(FILENAME2); 28 constexpr const char *FILENAME3 = "fchdir.test"; 29 auto TEST_FILE_BASE = libc_make_test_file_path(FILENAME3); 30 LIBC_NAMESPACE::libc_errno = 0; 31 32 int dir_fd = LIBC_NAMESPACE::open(TEST_DIR, O_DIRECTORY); 33 ASSERT_GT(dir_fd, 0); 34 ASSERT_ERRNO_SUCCESS(); 35 int file_fd = LIBC_NAMESPACE::open(TEST_FILE, O_PATH); 36 ASSERT_GT(file_fd, 0); 37 ASSERT_ERRNO_SUCCESS(); 38 ASSERT_THAT(LIBC_NAMESPACE::close(file_fd), Succeeds(0)); 39 40 ASSERT_THAT(LIBC_NAMESPACE::fchdir(dir_fd), Succeeds(0)); 41 file_fd = LIBC_NAMESPACE::open(TEST_FILE_BASE, O_PATH); 42 ASSERT_GT(file_fd, 0); 43 ASSERT_ERRNO_SUCCESS(); 44 ASSERT_THAT(LIBC_NAMESPACE::close(file_fd), Succeeds(0)); 45 ASSERT_THAT(LIBC_NAMESPACE::close(dir_fd), Succeeds(0)); 46 } 47 48 TEST(LlvmLibcChdirTest, ChangeToNonExistentDir) { 49 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; 50 LIBC_NAMESPACE::libc_errno = 0; 51 ASSERT_EQ(LIBC_NAMESPACE::fchdir(0), -1); 52 ASSERT_ERRNO_FAILURE(); 53 LIBC_NAMESPACE::libc_errno = 0; 54 } 55