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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 <stdint.h>
#include <unistd.h>
#include <functional>
#include <string>
#include <vector>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
#include <gtest/gtest.h>
#include "fuse_provider.h"
#include "fuse_sideload.h"
#include "install/install.h"
TEST(FuseBlockMapTest, CreateFromBlockMap_smoke) {
TemporaryFile fake_block_device;
std::vector<std::string> lines = {
fake_block_device.path, "10000 4096", "3", "10 11", "20 21", "22 23",
};
TemporaryFile temp_file;
android::base::WriteStringToFile(android::base::Join(lines, '\n'), temp_file.path);
auto block_map_data = FuseBlockDataProvider::CreateFromBlockMap(temp_file.path, 4096);
ASSERT_TRUE(block_map_data);
ASSERT_EQ(10000, block_map_data->file_size());
ASSERT_EQ(4096, block_map_data->fuse_block_size());
ASSERT_EQ(RangeSet({ { 10, 11 }, { 20, 21 }, { 22, 23 } }),
static_cast<FuseBlockDataProvider*>(block_map_data.get())->ranges());
}
TEST(FuseBlockMapTest, ReadBlockAlignedData_smoke) {
std::string content;
content.reserve(40960);
for (char c = 0; c < 10; c++) {
content += std::string(4096, c);
}
TemporaryFile fake_block_device;
ASSERT_TRUE(android::base::WriteStringToFile(content, fake_block_device.path));
std::vector<std::string> lines = {
fake_block_device.path,
"20000 4096",
"1",
"0 5",
};
TemporaryFile temp_file;
android::base::WriteStringToFile(android::base::Join(lines, '\n'), temp_file.path);
auto block_map_data = FuseBlockDataProvider::CreateFromBlockMap(temp_file.path, 4096);
std::vector<uint8_t> result(2000);
ASSERT_TRUE(block_map_data->ReadBlockAlignedData(result.data(), 2000, 1));
ASSERT_EQ(std::vector<uint8_t>(content.begin() + 4096, content.begin() + 6096), result);
result.resize(20000);
ASSERT_TRUE(block_map_data->ReadBlockAlignedData(result.data(), 20000, 0));
ASSERT_EQ(std::vector<uint8_t>(content.begin(), content.begin() + 20000), result);
}
TEST(FuseBlockMapTest, ReadBlockAlignedData_large_fuse_block) {
std::string content;
for (char c = 0; c < 10; c++) {
content += std::string(4096, c);
}
TemporaryFile temp_file;
ASSERT_TRUE(android::base::WriteStringToFile(content, temp_file.path));
std::vector<std::string> lines = {
temp_file.path, "36384 4096", "2", "0 5", "6 10",
};
TemporaryFile block_map;
ASSERT_TRUE(android::base::WriteStringToFile(android::base::Join(lines, '\n'), block_map.path));
auto block_map_data = FuseBlockDataProvider::CreateFromBlockMap(block_map.path, 16384);
ASSERT_TRUE(block_map_data);
std::vector<uint8_t> result(20000);
// Out of bound read
ASSERT_FALSE(block_map_data->ReadBlockAlignedData(result.data(), 20000, 2));
ASSERT_TRUE(block_map_data->ReadBlockAlignedData(result.data(), 20000, 1));
// expected source block contains: 4, 6-9
std::string expected = content.substr(16384, 4096) + content.substr(24576, 15904);
ASSERT_EQ(std::vector<uint8_t>(expected.begin(), expected.end()), result);
}
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