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// 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
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