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//
// Copyright (C) 2019 The Android Open Source Project
//
// 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 <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <chrono>
#include <iostream>
#include <thread>
#include <android-base/file.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
#include <ext4_utils/ext4_utils.h>
#include <fs_mgr/file_wait.h>
#include <gtest/gtest.h>
#include <libdm/dm.h>
#include <libfiemap/image_manager.h>
#include "utility.h"
using namespace android::dm;
using namespace std::literals;
using android::base::unique_fd;
using android::fiemap::ImageManager;
using android::fiemap::IsSubdir;
using android::fs_mgr::BlockDeviceInfo;
using android::fs_mgr::PartitionOpener;
using android::fs_mgr::WaitForFile;
static std::string gDataPath;
static std::string gDataMountPath;
static constexpr char kMetadataPath[] = "/metadata/gsi/test";
static constexpr uint64_t kTestImageSize = 1024 * 1024;
class TestPartitionOpener final : public PartitionOpener {
public:
android::base::unique_fd Open(const std::string& partition_name, int flags) const override {
return PartitionOpener::Open(GetPathForBlockDeviceName(partition_name), flags);
}
bool GetInfo(const std::string& partition_name, BlockDeviceInfo* info) const override {
return PartitionOpener::GetInfo(GetPathForBlockDeviceName(partition_name), info);
}
std::string GetDeviceString(const std::string& partition_name) const override {
return PartitionOpener::GetDeviceString(GetPathForBlockDeviceName(partition_name));
}
private:
static std::string GetPathForBlockDeviceName(const std::string& name) {
if (android::base::StartsWith(name, "loop") || android::base::StartsWith(name, "dm-")) {
return "/dev/block/"s + name;
}
return name;
}
};
// This fixture is for tests against the device's native configuration.
class NativeTest : public ::testing::Test {
protected:
void SetUp() override {
manager_ = ImageManager::Open(kMetadataPath, gDataPath);
ASSERT_NE(manager_, nullptr);
manager_->set_partition_opener(std::make_unique<TestPartitionOpener>());
const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
base_name_ = tinfo->name();
}
void TearDown() override {
manager_->UnmapImageDevice(base_name_);
manager_->DeleteBackingImage(base_name_);
}
std::string PropertyName() { return "gsid.mapped_image." + base_name_; }
std::unique_ptr<ImageManager> manager_;
std::string base_name_;
};
TEST_F(NativeTest, CreateAndMap) {
ASSERT_TRUE(manager_->CreateBackingImage(base_name_, kTestImageSize, false, nullptr));
std::string path;
ASSERT_TRUE(manager_->MapImageDevice(base_name_, 5s, &path));
ASSERT_TRUE(manager_->IsImageMapped(base_name_));
ASSERT_EQ(android::base::GetProperty(PropertyName(), ""), path);
{
unique_fd fd(open(path.c_str(), O_RDWR | O_NOFOLLOW | O_CLOEXEC));
ASSERT_GE(fd, 0);
ASSERT_EQ(get_block_device_size(fd), kTestImageSize);
}
ASSERT_TRUE(manager_->UnmapImageDevice(base_name_));
ASSERT_FALSE(manager_->IsImageMapped(base_name_));
ASSERT_EQ(android::base::GetProperty(PropertyName(), ""), "");
}
TEST_F(NativeTest, DisableImage) {
ASSERT_TRUE(manager_->CreateBackingImage(base_name_, kTestImageSize, false, nullptr));
ASSERT_TRUE(manager_->BackingImageExists(base_name_));
ASSERT_TRUE(manager_->DisableImage(base_name_));
ASSERT_TRUE(manager_->IsImageDisabled(base_name_));
ASSERT_TRUE(manager_->RemoveDisabledImages());
ASSERT_TRUE(!manager_->BackingImageExists(base_name_));
}
TEST_F(NativeTest, GetMappedImageDevice) {
ASSERT_TRUE(manager_->CreateBackingImage(base_name_, kTestImageSize, false, nullptr));
std::string path1, path2;
ASSERT_TRUE(manager_->MapImageDevice(base_name_, 5s, &path1));
ASSERT_TRUE(manager_->GetMappedImageDevice(base_name_, &path2));
EXPECT_EQ(path1, path2);
ASSERT_TRUE(manager_->UnmapImageDevice(base_name_));
}
namespace {
struct IsSubdirTestParam {
std::string child;
std::string parent;
bool result;
};
class IsSubdirTest : public ::testing::TestWithParam<IsSubdirTestParam> {};
TEST_P(IsSubdirTest, Test) {
const auto& param = GetParam();
EXPECT_EQ(param.result, IsSubdir(param.child, param.parent))
<< "IsSubdir(child=\"" << param.child << "\", parent=\"" << param.parent
<< "\") != " << (param.result ? "true" : "false");
}
std::vector<IsSubdirTestParam> IsSubdirTestValues() {
// clang-format off
std::vector<IsSubdirTestParam> base_cases{
{"/foo/bar", "/foo", true},
{"/foo/bar/baz", "/foo", true},
{"/foo", "/foo", true},
{"/foo", "/", true},
{"/", "/", true},
{"/foo", "/foo/bar", false},
{"/foo", "/bar", false},
{"/foo-bar", "/foo", false},
{"/", "/foo", false},
};
// clang-format on
std::vector<IsSubdirTestParam> ret;
for (const auto& e : base_cases) {
ret.push_back(e);
ret.push_back({e.child + "/", e.parent, e.result});
ret.push_back({e.child, e.parent + "/", e.result});
ret.push_back({e.child + "/", e.parent + "/", e.result});
}
return ret;
}
INSTANTIATE_TEST_SUITE_P(IsSubdirTest, IsSubdirTest, ::testing::ValuesIn(IsSubdirTestValues()));
} // namespace
bool Mkdir(const std::string& path) {
if (mkdir(path.c_str(), 0700) && errno != EEXIST) {
std::cerr << "Could not mkdir " << path << ": " << strerror(errno) << std::endl;
return false;
}
return true;
}
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
if (argc >= 2) {
gDataPath = argv[1];
} else {
gDataPath = "/data/gsi/test";
}
gDataMountPath = gDataPath + "/mnt"s;
if (!Mkdir(gDataPath) || !Mkdir(kMetadataPath) || !Mkdir(gDataMountPath) ||
!Mkdir(kMetadataPath + "/mnt"s)) {
return 1;
}
return RUN_ALL_TESTS();
}
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