61 lines · cpp
1//===-- Unittests for chmod -----------------------------------------------===//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/sys/stat/chmod.h"11#include "src/unistd/close.h"12#include "src/unistd/write.h"13#include "test/UnitTest/ErrnoCheckingTest.h"14#include "test/UnitTest/ErrnoSetterMatcher.h"15#include "test/UnitTest/Test.h"16 17#include "hdr/fcntl_macros.h"18#include <sys/stat.h>19 20using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;21using LlvmLibcChmodTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;22 23TEST_F(LlvmLibcChmodTest, ChangeAndOpen) {24 // The test file is initially writable. We open it for writing and ensure25 // that it indeed can be opened for writing. Next, we close the file and26 // make it readonly using chmod. We test that chmod actually succeeded by27 // trying to open the file for writing and failing.28 constexpr const char *TEST_FILE = "testdata/chmod.test";29 const char WRITE_DATA[] = "test data";30 constexpr ssize_t WRITE_SIZE = ssize_t(sizeof(WRITE_DATA));31 32 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_APPEND | O_WRONLY);33 ASSERT_GT(fd, 0);34 ASSERT_ERRNO_SUCCESS();35 ASSERT_EQ(LIBC_NAMESPACE::write(fd, WRITE_DATA, sizeof(WRITE_DATA)),36 WRITE_SIZE);37 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));38 39 fd = LIBC_NAMESPACE::open(TEST_FILE, O_PATH);40 ASSERT_GT(fd, 0);41 ASSERT_ERRNO_SUCCESS();42 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));43 EXPECT_THAT(LIBC_NAMESPACE::chmod(TEST_FILE, S_IRUSR), Succeeds(0));44 45 // Opening for writing should fail.46 EXPECT_EQ(LIBC_NAMESPACE::open(TEST_FILE, O_APPEND | O_WRONLY), -1);47 ASSERT_ERRNO_FAILURE();48 // But opening for reading should succeed.49 fd = LIBC_NAMESPACE::open(TEST_FILE, O_APPEND | O_RDONLY);50 EXPECT_GT(fd, 0);51 ASSERT_ERRNO_SUCCESS();52 53 EXPECT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));54 EXPECT_THAT(LIBC_NAMESPACE::chmod(TEST_FILE, S_IRWXU), Succeeds(0));55}56 57TEST_F(LlvmLibcChmodTest, NonExistentFile) {58 ASSERT_THAT(LIBC_NAMESPACE::chmod("non-existent-file", S_IRUSR),59 Fails(ENOENT));60}61