// Copyright 2021 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 <sys/mount.h> #include <iomanip> #include <sstream> #include "gmock/gmock.h" #include "gtest/gtest.h" #include "test/util/capability_util.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" namespace gvisor { namespace testing { namespace { // Mount verity file system on an existing gofer mount. TEST(MountTest, MountExisting) { // Verity is implemented in VFS2. SKIP_IF(IsRunningWithVFS1()); SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); // Mount a new tmpfs file system. auto const tmpfs_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); ASSERT_THAT(mount("", tmpfs_dir.path().c_str(), "tmpfs", 0, ""), SyscallSucceeds()); // Mount a verity file system on the existing gofer mount. auto const verity_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); std::string opts = "lower_path=" + tmpfs_dir.path(); EXPECT_THAT(mount("", verity_dir.path().c_str(), "verity", 0, opts.c_str()), SyscallSucceeds()); } } // namespace } // namespace testing } // namespace gvisor