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
TEST(LlvmLibcChdirTest,ChangeAndOpen)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
TEST(LlvmLibcChdirTest,ChangeToNonExistentDir)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