Open source system call tests.

PiperOrigin-RevId: 224886231
Change-Id: I0fccb4d994601739d8b16b1d4e6b31f40297fb22

1 files changed, 72 insertions, 0 deletions

diff --git a/test/syscalls/linux/fadvise64.cc b/test/syscalls/linux/fadvise64.cc
new file mode 100644
index 000000000..041e8b7b6
--- /dev/null
+++ b/test/syscalls/linux/fadvise64.cc
@@ -0,0 +1,72 @@
+// Copyright 2018 Google LLC
+//
+// 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