96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
// Copyright 2021 The gVisor Authors.
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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 <dirent.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sys/mount.h>
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#include <sys/syscall.h>
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#include <string>
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#include <vector>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "test/util/capability_util.h"
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#include "test/util/fs_util.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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#include "test/util/verity_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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class GetDentsTest : public ::testing::Test {
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protected:
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void SetUp() override {
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// Verity is implemented in VFS2.
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SKIP_IF(IsRunningWithVFS1());
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SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN)));
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// Mount a tmpfs file system, to be wrapped by a verity fs.
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tmpfs_dir_ = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
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ASSERT_THAT(mount("", tmpfs_dir_.path().c_str(), "tmpfs", 0, ""),
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SyscallSucceeds());
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// Create a new file in the tmpfs mount.
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file_ = ASSERT_NO_ERRNO_AND_VALUE(
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TempPath::CreateFileWith(tmpfs_dir_.path(), kContents, 0777));
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filename_ = Basename(file_.path());
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}
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TempPath tmpfs_dir_;
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TempPath file_;
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std::string filename_;
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};
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TEST_F(GetDentsTest, GetDents) {
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std::string verity_dir = ASSERT_NO_ERRNO_AND_VALUE(
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MountVerity(tmpfs_dir_.path(), {EnableTarget(filename_, O_RDONLY)}));
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std::vector<std::string> expect = {".", "..", filename_};
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EXPECT_NO_ERRNO(DirContains(verity_dir, expect, /*exclude=*/{}));
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}
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TEST_F(GetDentsTest, Deleted) {
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std::string verity_dir = ASSERT_NO_ERRNO_AND_VALUE(
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MountVerity(tmpfs_dir_.path(), {EnableTarget(filename_, O_RDONLY)}));
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EXPECT_THAT(unlink(JoinPath(tmpfs_dir_.path(), filename_).c_str()),
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SyscallSucceeds());
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EXPECT_THAT(DirContains(verity_dir, /*expect=*/{}, /*exclude=*/{}),
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PosixErrorIs(EIO, ::testing::_));
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}
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TEST_F(GetDentsTest, Renamed) {
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std::string verity_dir = ASSERT_NO_ERRNO_AND_VALUE(
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MountVerity(tmpfs_dir_.path(), {EnableTarget(filename_, O_RDONLY)}));
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std::string new_file_name = "renamed-" + filename_;
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EXPECT_THAT(rename(JoinPath(tmpfs_dir_.path(), filename_).c_str(),
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JoinPath(tmpfs_dir_.path(), new_file_name).c_str()),
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SyscallSucceeds());
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EXPECT_THAT(DirContains(verity_dir, /*expect=*/{}, /*exclude=*/{}),
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PosixErrorIs(EIO, ::testing::_));
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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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