116 lines · cpp
1//===-- Unittests for faccessat -------------------------------------------===//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/faccessat.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 <fcntl.h>18#include <sys/stat.h>19#include <unistd.h>20 21namespace {22 23using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;24using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;25 26using LlvmLibcFaccessatTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;27 28TEST_F(LlvmLibcFaccessatTest, WithAtFdcwd) {29 // Test access checks on a file with AT_FDCWD and no flags, equivalent to30 // access().31 constexpr const char *FILENAME = "faccessat_basic.test";32 auto TEST_FILE = libc_make_test_file_path(FILENAME);33 34 // Check permissions on a file with full permissions35 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);36 ASSERT_ERRNO_SUCCESS();37 ASSERT_GT(fd, 0);38 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));39 40 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, F_OK, 0),41 Succeeds(0));42 ASSERT_THAT(43 LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, X_OK | W_OK | R_OK, 0),44 Succeeds(0));45 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));46 47 // Check permissions on a file with execute-only permission48 fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IXUSR);49 ASSERT_ERRNO_SUCCESS();50 ASSERT_GT(fd, 0);51 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));52 53 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, F_OK, 0),54 Succeeds(0));55 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, X_OK, 0),56 Succeeds(0));57 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, R_OK, 0),58 Fails(EACCES));59 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, W_OK, 0),60 Fails(EACCES));61 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));62}63 64TEST_F(LlvmLibcFaccessatTest, NonExistentFile) {65 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, "faccessat_nonexistent.test",66 F_OK, 0),67 Fails(ENOENT));68}69 70TEST_F(LlvmLibcFaccessatTest, AtEaccess) {71 // With AT_EACCESS, faccessat checks permissions using the effective user ID,72 // but the effective and real user ID will be the same here and changing that73 // is not feasible in a test, so this is just a basic sanity check.74 constexpr const char *FILENAME = "faccessat_eaccess.test";75 auto TEST_FILE = libc_make_test_file_path(FILENAME);76 77 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);78 ASSERT_ERRNO_SUCCESS();79 ASSERT_GT(fd, 0);80 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));81 82 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, TEST_FILE, X_OK | W_OK | R_OK,83 AT_EACCESS),84 Succeeds(0));85 86 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));87}88 89TEST_F(LlvmLibcFaccessatTest, AtEmptyPath) {90 constexpr const char *FILENAME = "faccessat_atemptypath.test";91 auto TEST_FILE = libc_make_test_file_path(FILENAME);92 93 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);94 ASSERT_ERRNO_SUCCESS();95 ASSERT_GT(fd, 0);96 97 // Check permissions on the file referred to by fd98 ASSERT_THAT(LIBC_NAMESPACE::faccessat(fd, "", F_OK, AT_EMPTY_PATH),99 Succeeds(0));100 ASSERT_THAT(101 LIBC_NAMESPACE::faccessat(fd, "", X_OK | W_OK | R_OK, AT_EMPTY_PATH),102 Succeeds(0));103 104 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));105 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));106 107 // Check permissions on the current working directory108 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, "", F_OK, AT_EMPTY_PATH),109 Succeeds(0));110 ASSERT_THAT(LIBC_NAMESPACE::faccessat(AT_FDCWD, "", X_OK | W_OK | R_OK,111 AT_EMPTY_PATH),112 Succeeds(0));113}114 115} // namespace116