Open source system call tests.

PiperOrigin-RevId: 224886231
Change-Id: I0fccb4d994601739d8b16b1d4e6b31f40297fb22

1 files changed, 48 insertions, 0 deletions

diff --git a/test/util/mount_util.h b/test/util/mount_util.h
new file mode 100644
index 000000000..468170646
--- /dev/null
+++ b/test/util/mount_util.h
@@ -0,0 +1,48 @@
+// 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.
+
+#ifndef GVISOR_TEST_UTIL_MOUNT_UTIL_H_
+#define GVISOR_TEST_UTIL_MOUNT_UTIL_H_
+
+#include <errno.h>
+#include <sys/mount.h>
+#include <functional>
+#include <string>
+
+#include "gmock/gmock.h"
+#include "test/util/cleanup.h"
+#include "test/util/posix_error.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+// Mount mounts the filesystem, and unmounts when the returned reference is
+// destroyed.
+inline PosixErrorOr<Cleanup> Mount(const std::string &source, const std::string &target,
+                                   const std::string &fstype, uint64_t mountflags,
+                                   const std::string &data, uint64_t umountflags) {
+  if (mount(source.c_str(), target.c_str(), fstype.c_str(), mountflags,
+            data.c_str()) == -1) {
+    return PosixError(errno, "mount failed");
+  }
+  return Cleanup([target, umountflags]() {
+    EXPECT_THAT(umount2(target.c_str(), umountflags), SyscallSucceeds());
+  });
+}
+
+}  // namespace testing
+}  // namespace gvisor
+
+#endif  // GVISOR_TEST_UTIL_MOUNT_UTIL_H_