// Copyright 2018 The gVisor Authors. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <string> #include "gtest/gtest.h" #include "test/util/file_descriptor.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" namespace gvisor { namespace testing { namespace { TEST(FsyncTest, TempFileSucceeds) { auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); const std::string data = "some data to sync"; EXPECT_THAT(write(fd.get(), data.c_str(), data.size()), SyscallSucceedsWithValue(data.size())); EXPECT_THAT(fsync(fd.get()), SyscallSucceeds()); } TEST(FsyncTest, TempDirSucceeds) { auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY | O_DIRECTORY)); EXPECT_THAT(fsync(fd.get()), SyscallSucceeds()); } TEST(FsyncTest, CannotFsyncOnUnopenedFd) { auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); int fd; ASSERT_THAT(fd = open(file.path().c_str(), O_RDONLY), SyscallSucceeds()); ASSERT_THAT(close(fd), SyscallSucceeds()); // fd is now invalid. EXPECT_THAT(fsync(fd), SyscallFailsWithErrno(EBADF)); } } // namespace } // namespace testing } // namespace gvisor