//
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// Copyright (C) 2016 The Android Open Source Project
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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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//
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#include "update_engine/payload_generator/mapfile_filesystem.h"
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#include <unistd.h>
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#include <map>
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#include <string>
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#include <vector>
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#include <base/format_macros.h>
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#include <base/logging.h>
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#include <base/strings/string_number_conversions.h>
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#include <base/strings/string_util.h>
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#include <base/strings/stringprintf.h>
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#include <gtest/gtest.h>
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#include "update_engine/common/test_utils.h"
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#include "update_engine/common/utils.h"
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#include "update_engine/payload_generator/extent_ranges.h"
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#include "update_engine/payload_generator/extent_utils.h"
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using std::map;
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using std::string;
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using std::unique_ptr;
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using std::vector;
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namespace chromeos_update_engine {
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namespace {
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// Checks that all the blocks in |extents| are in the range [0, total_blocks).
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void ExpectBlocksInRange(const vector<Extent>& extents, uint64_t total_blocks) {
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for (const Extent& extent : extents) {
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EXPECT_LE(0U, extent.start_block());
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EXPECT_LE(extent.start_block() + extent.num_blocks(), total_blocks);
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}
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}
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} // namespace
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class MapfileFilesystemTest : public ::testing::Test {
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protected:
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test_utils::ScopedTempFile temp_file_{"mapfile_file.XXXXXX"};
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test_utils::ScopedTempFile temp_mapfile_{"mapfile_mapfile.XXXXXX"};
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};
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TEST_F(MapfileFilesystemTest, EmptyFilesystem) {
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unique_ptr<MapfileFilesystem> fs = MapfileFilesystem::CreateFromFile(
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temp_file_.path(), temp_mapfile_.path());
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ASSERT_NE(nullptr, fs.get());
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EXPECT_EQ(0U, fs->GetBlockCount());
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// .map files are always 4KiB blocks.
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EXPECT_EQ(4096U, fs->GetBlockSize());
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}
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TEST_F(MapfileFilesystemTest, SeveralFileFormatTest) {
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string text =
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"/fileA 1\n"
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"/fileB 2-4\n"
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"/fileC 5-6 9 11-12\n"
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"/file with spaces 14 19\n"
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"/1234 7\n";
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test_utils::WriteFileString(temp_mapfile_.path(), text);
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EXPECT_EQ(0, HANDLE_EINTR(truncate(temp_file_.path().c_str(), 4096 * 20)));
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unique_ptr<MapfileFilesystem> fs = MapfileFilesystem::CreateFromFile(
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temp_file_.path(), temp_mapfile_.path());
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ASSERT_NE(nullptr, fs.get());
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vector<FilesystemInterface::File> files;
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EXPECT_TRUE(fs->GetFiles(&files));
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map<string, FilesystemInterface::File> map_files;
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for (const auto& file : files) {
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EXPECT_EQ(map_files.end(), map_files.find(file.name))
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<< "File " << file.name << " repeated in the list.";
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map_files[file.name] = file;
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ExpectBlocksInRange(file.extents, fs->GetBlockCount());
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}
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EXPECT_EQ(map_files["/fileA"].extents,
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(vector<Extent>{ExtentForRange(1, 1)}));
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EXPECT_EQ(map_files["/fileB"].extents,
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(vector<Extent>{ExtentForRange(2, 3)}));
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EXPECT_EQ(
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map_files["/fileC"].extents,
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(vector<Extent>{
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ExtentForRange(5, 2), ExtentForRange(9, 1), ExtentForRange(11, 2)}));
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EXPECT_EQ(map_files["/file with spaces"].extents,
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(vector<Extent>{ExtentForRange(14, 1), ExtentForRange(19, 1)}));
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EXPECT_EQ(map_files["/1234"].extents, (vector<Extent>{ExtentForRange(7, 1)}));
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}
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TEST_F(MapfileFilesystemTest, BlockNumberTooBigTest) {
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test_utils::WriteFileString(temp_mapfile_.path(), "/some/file 1-4\n");
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EXPECT_EQ(0, HANDLE_EINTR(truncate(temp_file_.path().c_str(), 4096 * 3)));
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unique_ptr<MapfileFilesystem> fs = MapfileFilesystem::CreateFromFile(
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temp_file_.path(), temp_mapfile_.path());
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ASSERT_NE(nullptr, fs.get());
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vector<FilesystemInterface::File> files;
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EXPECT_FALSE(fs->GetFiles(&files));
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}
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TEST_F(MapfileFilesystemTest, EndBeforeStartTest) {
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test_utils::WriteFileString(temp_mapfile_.path(), "/some/file 2-1\n");
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EXPECT_EQ(0, HANDLE_EINTR(truncate(temp_file_.path().c_str(), 4096 * 3)));
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unique_ptr<MapfileFilesystem> fs = MapfileFilesystem::CreateFromFile(
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temp_file_.path(), temp_mapfile_.path());
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ASSERT_NE(nullptr, fs.get());
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vector<FilesystemInterface::File> files;
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EXPECT_FALSE(fs->GetFiles(&files));
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}
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} // namespace chromeos_update_engine
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