113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string>
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#include "gtest/gtest.h"
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#include "test/util/file_descriptor.h"
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#include "test/util/temp_path.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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TEST(SyncFileRangeTest, TempFileSucceeds) {
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auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR));
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constexpr char data[] = "some data to sync";
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int fd = f.get();
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EXPECT_THAT(write(fd, data, sizeof(data)),
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SyscallSucceedsWithValue(sizeof(data)));
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EXPECT_THAT(sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WRITE),
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SyscallSucceeds());
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EXPECT_THAT(sync_file_range(fd, 0, 0, 0), SyscallSucceeds());
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EXPECT_THAT(
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sync_file_range(fd, 0, 0,
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SYNC_FILE_RANGE_WRITE | SYNC_FILE_RANGE_WAIT_AFTER |
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SYNC_FILE_RANGE_WAIT_BEFORE),
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SyscallSucceeds());
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EXPECT_THAT(sync_file_range(
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fd, 0, 1, SYNC_FILE_RANGE_WRITE | SYNC_FILE_RANGE_WAIT_AFTER),
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SyscallSucceeds());
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EXPECT_THAT(sync_file_range(
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fd, 1, 0, SYNC_FILE_RANGE_WRITE | SYNC_FILE_RANGE_WAIT_AFTER),
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SyscallSucceeds());
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}
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TEST(SyncFileRangeTest, CannotSyncFileRangeOnUnopenedFd) {
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auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR));
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constexpr char data[] = "some data to sync";
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int fd = f.get();
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EXPECT_THAT(write(fd, data, sizeof(data)),
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SyscallSucceedsWithValue(sizeof(data)));
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pid_t pid = fork();
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if (pid == 0) {
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f.reset();
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// fd is now invalid.
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TEST_CHECK(sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WRITE) == -1);
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TEST_PCHECK(errno == EBADF);
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_exit(0);
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}
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ASSERT_THAT(pid, SyscallSucceeds());
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int status = 0;
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ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid));
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EXPECT_TRUE(WIFEXITED(status));
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EXPECT_EQ(WEXITSTATUS(status), 0);
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}
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TEST(SyncFileRangeTest, BadArgs) {
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auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR));
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int fd = f.get();
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EXPECT_THAT(sync_file_range(fd, -1, 0, 0), SyscallFailsWithErrno(EINVAL));
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EXPECT_THAT(sync_file_range(fd, 0, -1, 0), SyscallFailsWithErrno(EINVAL));
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EXPECT_THAT(sync_file_range(fd, 8912, INT64_MAX - 4096, 0),
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SyscallFailsWithErrno(EINVAL));
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}
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TEST(SyncFileRangeTest, CannotSyncFileRangeWithWaitBefore) {
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auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR));
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constexpr char data[] = "some data to sync";
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int fd = f.get();
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EXPECT_THAT(write(fd, data, sizeof(data)),
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SyscallSucceedsWithValue(sizeof(data)));
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if (IsRunningOnGvisor()) {
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EXPECT_THAT(sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WAIT_BEFORE),
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SyscallFailsWithErrno(ENOSYS));
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EXPECT_THAT(
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sync_file_range(fd, 0, 0,
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SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE),
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SyscallFailsWithErrno(ENOSYS));
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}
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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