73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
// Copyright 2018 Google LLC
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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 <syscall.h>
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#include <unistd.h>
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#include "gmock/gmock.h"
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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(FAdvise64Test, Basic) {
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auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY));
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// fadvise64 is noop in gVisor, so just test that it succeeds.
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_NORMAL),
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SyscallSucceeds());
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_RANDOM),
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SyscallSucceeds());
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_SEQUENTIAL),
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SyscallSucceeds());
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_WILLNEED),
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SyscallSucceeds());
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_DONTNEED),
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SyscallSucceeds());
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_NOREUSE),
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SyscallSucceeds());
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}
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TEST(FAdvise64Test, InvalidArgs) {
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auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY));
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// Note: offset is allowed to be negative.
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, static_cast<off_t>(-1),
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POSIX_FADV_NORMAL),
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SyscallFailsWithErrno(EINVAL));
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ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, 12345),
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SyscallFailsWithErrno(EINVAL));
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}
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TEST(FAdvise64Test, NoPipes) {
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int fds[2];
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ASSERT_THAT(pipe(fds), SyscallSucceeds());
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const FileDescriptor read(fds[0]);
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const FileDescriptor write(fds[1]);
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ASSERT_THAT(syscall(__NR_fadvise64, read.get(), 0, 10, POSIX_FADV_NORMAL),
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SyscallFailsWithErrno(ESPIPE));
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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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