| //===-- Unittests for linkat ----------------------------------------------===// |
| // |
| // 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 "src/errno/libc_errno.h" |
| #include "src/fcntl/open.h" |
| #include "src/unistd/close.h" |
| #include "src/unistd/linkat.h" |
| #include "src/unistd/unlink.h" |
| #include "test/UnitTest/ErrnoSetterMatcher.h" |
| #include "test/UnitTest/Test.h" |
| |
| #include <sys/stat.h> |
| |
| TEST(LlvmLibcLinkatTest, CreateAndUnlink) { |
| using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds; |
| constexpr const char *FILENAME = "testdata"; |
| auto TEST_DIR = libc_make_test_file_path(FILENAME); |
| constexpr const char *FILENAME2 = "linkat.test"; |
| auto TEST_FILE = libc_make_test_file_path(FILENAME2); |
| constexpr const char *FILENAME3 = "testdata/linkat.test"; |
| auto TEST_FILE_PATH = libc_make_test_file_path(FILENAME3); |
| constexpr const char *FILENAME4 = "linkat.test.link"; |
| auto TEST_FILE_LINK = libc_make_test_file_path(FILENAME4); |
| constexpr const char *FILENAME5 = "testdata/linkat.test.link"; |
| auto TEST_FILE_LINK_PATH = libc_make_test_file_path(FILENAME5); |
| |
| // The test strategy is as follows: |
| // 1. Create a normal file |
| // 2. Create a link to that file. |
| // 3. Open the link to check that the link was created. |
| // 4. Cleanup the file and its link. |
| LIBC_NAMESPACE::libc_errno = 0; |
| int write_fd = |
| LIBC_NAMESPACE::open(TEST_FILE_PATH, O_WRONLY | O_CREAT, S_IRWXU); |
| ASSERT_ERRNO_SUCCESS(); |
| ASSERT_GT(write_fd, 0); |
| ASSERT_THAT(LIBC_NAMESPACE::close(write_fd), Succeeds(0)); |
| |
| int dir_fd = LIBC_NAMESPACE::open(TEST_DIR, O_DIRECTORY); |
| ASSERT_THAT( |
| LIBC_NAMESPACE::linkat(dir_fd, TEST_FILE, dir_fd, TEST_FILE_LINK, 0), |
| Succeeds(0)); |
| |
| int link_fd = LIBC_NAMESPACE::open(TEST_FILE_LINK_PATH, O_PATH); |
| ASSERT_GT(link_fd, 0); |
| ASSERT_ERRNO_SUCCESS(); |
| ASSERT_THAT(LIBC_NAMESPACE::close(link_fd), Succeeds(0)); |
| |
| ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE_PATH), Succeeds(0)); |
| ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE_LINK_PATH), Succeeds(0)); |
| ASSERT_THAT(LIBC_NAMESPACE::close(dir_fd), Succeeds(0)); |
| } |
| |
| TEST(LlvmLibcLinkatTest, LinkToNonExistentFile) { |
| using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; |
| ASSERT_THAT(LIBC_NAMESPACE::linkat(AT_FDCWD, "testdata/non-existent-file", |
| AT_FDCWD, "testdata/bad-link", 0), |
| Fails(ENOENT)); |
| } |