66 lines · cpp
1//===-- Unittests for linkat ----------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/fcntl/open.h"10#include "src/unistd/close.h"11#include "src/unistd/linkat.h"12#include "src/unistd/unlink.h"13#include "test/UnitTest/ErrnoCheckingTest.h"14#include "test/UnitTest/ErrnoSetterMatcher.h"15#include "test/UnitTest/Test.h"16 17#include <sys/stat.h>18 19using LlvmLibcLinkatTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;20 21TEST_F(LlvmLibcLinkatTest, CreateAndUnlink) {22 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;23 constexpr const char *FILENAME = "testdata";24 auto TEST_DIR = libc_make_test_file_path(FILENAME);25 constexpr const char *FILENAME2 = "linkat.test";26 auto TEST_FILE = libc_make_test_file_path(FILENAME2);27 constexpr const char *FILENAME3 = "testdata/linkat.test";28 auto TEST_FILE_PATH = libc_make_test_file_path(FILENAME3);29 constexpr const char *FILENAME4 = "linkat.test.link";30 auto TEST_FILE_LINK = libc_make_test_file_path(FILENAME4);31 constexpr const char *FILENAME5 = "testdata/linkat.test.link";32 auto TEST_FILE_LINK_PATH = libc_make_test_file_path(FILENAME5);33 34 // The test strategy is as follows:35 // 1. Create a normal file36 // 2. Create a link to that file.37 // 3. Open the link to check that the link was created.38 // 4. Cleanup the file and its link.39 int write_fd =40 LIBC_NAMESPACE::open(TEST_FILE_PATH, O_WRONLY | O_CREAT, S_IRWXU);41 ASSERT_ERRNO_SUCCESS();42 ASSERT_GT(write_fd, 0);43 ASSERT_THAT(LIBC_NAMESPACE::close(write_fd), Succeeds(0));44 45 int dir_fd = LIBC_NAMESPACE::open(TEST_DIR, O_DIRECTORY);46 ASSERT_THAT(47 LIBC_NAMESPACE::linkat(dir_fd, TEST_FILE, dir_fd, TEST_FILE_LINK, 0),48 Succeeds(0));49 50 int link_fd = LIBC_NAMESPACE::open(TEST_FILE_LINK_PATH, O_PATH);51 ASSERT_GT(link_fd, 0);52 ASSERT_ERRNO_SUCCESS();53 ASSERT_THAT(LIBC_NAMESPACE::close(link_fd), Succeeds(0));54 55 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE_PATH), Succeeds(0));56 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE_LINK_PATH), Succeeds(0));57 ASSERT_THAT(LIBC_NAMESPACE::close(dir_fd), Succeeds(0));58}59 60TEST_F(LlvmLibcLinkatTest, LinkToNonExistentFile) {61 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;62 ASSERT_THAT(LIBC_NAMESPACE::linkat(AT_FDCWD, "testdata/non-existent-file",63 AT_FDCWD, "testdata/bad-link", 0),64 Fails(ENOENT));65}66