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/*
* Copyright 2016 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 <gtest/gtest.h>
#include <string>
#include <android-base/file.h>
#include <android-base/test_utils.h>
#include "otautil/SysUtil.h"
TEST(SysUtilTest, InvalidArgs) {
MemMapping mapping;
// Invalid argument.
ASSERT_FALSE(mapping.MapFile(""));
}
TEST(SysUtilTest, MapFileRegularFile) {
TemporaryFile temp_file1;
std::string content = "abc";
ASSERT_TRUE(android::base::WriteStringToFile(content, temp_file1.path));
// MemMapping::MapFile() should map the file to one range.
MemMapping mapping;
ASSERT_TRUE(mapping.MapFile(temp_file1.path));
ASSERT_NE(nullptr, mapping.addr);
ASSERT_EQ(content.size(), mapping.length);
ASSERT_EQ(1U, mapping.ranges());
}
TEST(SysUtilTest, MapFileBlockMap) {
// Create a file that has 10 blocks.
TemporaryFile package;
std::string content;
constexpr size_t file_size = 4096 * 10;
content.reserve(file_size);
ASSERT_TRUE(android::base::WriteStringToFile(content, package.path));
TemporaryFile block_map_file;
std::string filename = std::string("@") + block_map_file.path;
MemMapping mapping;
// One range.
std::string block_map_content = std::string(package.path) + "\n40960 4096\n1\n0 10\n";
ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
ASSERT_TRUE(mapping.MapFile(filename));
ASSERT_EQ(file_size, mapping.length);
ASSERT_EQ(1U, mapping.ranges());
// It's okay to not have the trailing '\n'.
block_map_content = std::string(package.path) + "\n40960 4096\n1\n0 10";
ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
ASSERT_TRUE(mapping.MapFile(filename));
ASSERT_EQ(file_size, mapping.length);
ASSERT_EQ(1U, mapping.ranges());
// Or having multiple trailing '\n's.
block_map_content = std::string(package.path) + "\n40960 4096\n1\n0 10\n\n\n";
ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
ASSERT_TRUE(mapping.MapFile(filename));
ASSERT_EQ(file_size, mapping.length);
ASSERT_EQ(1U, mapping.ranges());
// Multiple ranges.
block_map_content = std::string(package.path) + "\n40960 4096\n3\n0 3\n3 5\n5 10\n";
ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
ASSERT_TRUE(mapping.MapFile(filename));
ASSERT_EQ(file_size, mapping.length);
ASSERT_EQ(3U, mapping.ranges());
}
TEST(SysUtilTest, MapFileBlockMapInvalidBlockMap) {
MemMapping mapping;
TemporaryFile temp_file;
std::string filename = std::string("@") + temp_file.path;
// Block map file is too short.
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n0\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
// Block map file has unexpected number of lines.
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n2\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
// Invalid size/blksize/range_count.
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\nabc 4096\n1\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
// size/blksize/range_count don't match.
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n0 4096\n1\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 0\n1\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n0\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
// Invalid block dev path.
ASSERT_TRUE(android::base::WriteStringToFile("/doesntexist\n4096 4096\n1\n0 1\n", temp_file.path));
ASSERT_FALSE(mapping.MapFile(filename));
}
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