1 //===-- Unittests for fstat -----------------------------------------------===// 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/sys/stat/fstat.h" 12 #include "src/unistd/close.h" 13 #include "src/unistd/unlink.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 20 TEST(LlvmLibcFStatTest, CreatAndReadMode) { 21 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; 22 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds; 23 24 // The test file is initially writable. We open it for writing and ensure 25 // that it indeed can be opened for writing. Next, we close the file and 26 // make it readonly using chmod. We test that chmod actually succeeded by 27 // trying to open the file for writing and failing. 28 constexpr const char *TEST_FILE = "testdata/fstat.test"; 29 LIBC_NAMESPACE::libc_errno = 0; 30 31 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_CREAT | O_WRONLY, S_IRWXU); 32 ASSERT_GT(fd, 0); 33 ASSERT_ERRNO_SUCCESS(); 34 35 struct stat statbuf; 36 ASSERT_THAT(LIBC_NAMESPACE::fstat(fd, &statbuf), Succeeds(0)); 37 38 ASSERT_EQ(int(statbuf.st_mode), int(S_IRWXU | S_IFREG)); 39 40 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0)); 41 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0)); 42 } 43 44 TEST(LlvmLibcFStatTest, NonExistentFile) { 45 LIBC_NAMESPACE::libc_errno = 0; 46 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; 47 struct stat statbuf; 48 ASSERT_THAT(LIBC_NAMESPACE::fstat(-1, &statbuf), Fails(EBADF)); 49 LIBC_NAMESPACE::libc_errno = 0; 50 } 51