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