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Zach KoopmansandgVisor bot
58f95dbe1e
Skip InvalidOffset and InvalidLength for Linux as the test is invalid for later Kernel versions. Add UnsupportedFile test as this check is in all kernel versions. PiperOrigin-RevId: 327248035
103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
// Copyright 2019 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 <errno.h>
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#include <fcntl.h>
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#include "gtest/gtest.h"
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#include "test/syscalls/linux/socket_test_util.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(ReadaheadTest, InvalidFD) {
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EXPECT_THAT(readahead(-1, 1, 1), SyscallFailsWithErrno(EBADF));
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}
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TEST(ReadaheadTest, UnsupportedFile) {
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FileDescriptor sock =
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ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, 0));
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ASSERT_THAT(readahead(sock.get(), 1, 1), SyscallFailsWithErrno(EINVAL));
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}
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TEST(ReadaheadTest, InvalidOffset) {
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// This test is not valid for some Linux Kernels.
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SKIP_IF(!IsRunningOnGvisor());
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const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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const FileDescriptor fd =
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ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));
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EXPECT_THAT(readahead(fd.get(), -1, 1), SyscallFailsWithErrno(EINVAL));
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}
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TEST(ReadaheadTest, ValidOffset) {
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constexpr char kData[] = "123";
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const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
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GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode));
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const FileDescriptor fd =
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ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));
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// N.B. The implementation of readahead is filesystem-specific, and a file
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// backed by ram may return EINVAL because there is nothing to be read.
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EXPECT_THAT(readahead(fd.get(), 1, 1), AnyOf(SyscallSucceedsWithValue(0),
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SyscallFailsWithErrno(EINVAL)));
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}
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TEST(ReadaheadTest, PastEnd) {
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constexpr char kData[] = "123";
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const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
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GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode));
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const FileDescriptor fd =
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ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));
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// See above.
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EXPECT_THAT(readahead(fd.get(), 2, 2), AnyOf(SyscallSucceedsWithValue(0),
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SyscallFailsWithErrno(EINVAL)));
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}
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TEST(ReadaheadTest, CrossesEnd) {
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constexpr char kData[] = "123";
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const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
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GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode));
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const FileDescriptor fd =
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ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));
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// See above.
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EXPECT_THAT(readahead(fd.get(), 4, 2), AnyOf(SyscallSucceedsWithValue(0),
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SyscallFailsWithErrno(EINVAL)));
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}
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TEST(ReadaheadTest, WriteOnly) {
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const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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const FileDescriptor fd =
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ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_WRONLY));
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EXPECT_THAT(readahead(fd.get(), 0, 1), SyscallFailsWithErrno(EBADF));
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}
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TEST(ReadaheadTest, InvalidSize) {
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// This test is not valid on some Linux kernels.
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SKIP_IF(!IsRunningOnGvisor());
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const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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const FileDescriptor fd =
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ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));
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EXPECT_THAT(readahead(fd.get(), 0, -1), SyscallFailsWithErrno(EINVAL));
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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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