1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
//
// Copyright (C) 2020 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 "update_engine/payload_consumer/partition_update_generator_android.h"
#include <map>
#include <memory>
#include <set>
#include <utility>
#include <vector>
#include <android-base/strings.h>
#include <brillo/secure_blob.h>
#include <gtest/gtest.h>
#include "update_engine/common/boot_control_interface.h"
#include "update_engine/common/fake_boot_control.h"
#include "update_engine/common/hash_calculator.h"
#include "update_engine/common/test_utils.h"
#include "update_engine/common/utils.h"
namespace chromeos_update_engine {
class FakePartitionUpdateGenerator : public PartitionUpdateGeneratorAndroid {
public:
std::vector<std::string> GetAbPartitionsOnDevice() const {
return ab_partitions_;
}
using PartitionUpdateGeneratorAndroid::PartitionUpdateGeneratorAndroid;
std::vector<std::string> ab_partitions_;
};
class PartitionUpdateGeneratorAndroidTest : public ::testing::Test {
protected:
void SetUp() override {
ASSERT_TRUE(device_dir_.CreateUniqueTempDir());
boot_control_ = std::make_unique<FakeBootControl>();
ASSERT_TRUE(boot_control_);
boot_control_->SetNumSlots(2);
generator_ = std::make_unique<FakePartitionUpdateGenerator>(
boot_control_.get(), 4096);
ASSERT_TRUE(generator_);
}
std::unique_ptr<FakePartitionUpdateGenerator> generator_;
std::unique_ptr<FakeBootControl> boot_control_;
base::ScopedTempDir device_dir_;
std::map<std::string, std::string> device_map_;
void SetUpBlockDevice(const std::map<std::string, std::string>& contents) {
std::set<std::string> partition_base_names;
for (const auto& [name, content] : contents) {
auto path = device_dir_.GetPath().value() + "/" + name;
ASSERT_TRUE(
utils::WriteFile(path.c_str(), content.data(), content.size()));
if (android::base::EndsWith(name, "_a")) {
auto prefix = name.substr(0, name.size() - 2);
boot_control_->SetPartitionDevice(prefix, 0, path);
partition_base_names.emplace(prefix);
} else if (android::base::EndsWith(name, "_b")) {
auto prefix = name.substr(0, name.size() - 2);
boot_control_->SetPartitionDevice(prefix, 1, path);
partition_base_names.emplace(prefix);
}
device_map_[name] = std::move(path);
}
generator_->ab_partitions_ = {partition_base_names.begin(),
partition_base_names.end()};
}
void CheckPartitionUpdate(const std::string& name,
const std::string& content,
const PartitionUpdate& partition_update) {
ASSERT_EQ(name, partition_update.partition_name());
brillo::Blob out_hash;
ASSERT_TRUE(HashCalculator::RawHashOfBytes(
content.data(), content.size(), &out_hash));
ASSERT_EQ(std::string(out_hash.begin(), out_hash.end()),
partition_update.old_partition_info().hash());
ASSERT_EQ(std::string(out_hash.begin(), out_hash.end()),
partition_update.new_partition_info().hash());
ASSERT_EQ(1, partition_update.operations_size());
const auto& operation = partition_update.operations(0);
ASSERT_EQ(InstallOperation::SOURCE_COPY, operation.type());
ASSERT_EQ(1, operation.src_extents_size());
ASSERT_EQ(0u, operation.src_extents(0).start_block());
ASSERT_EQ(content.size() / 4096, operation.src_extents(0).num_blocks());
ASSERT_EQ(1, operation.dst_extents_size());
ASSERT_EQ(0u, operation.dst_extents(0).start_block());
ASSERT_EQ(content.size() / 4096, operation.dst_extents(0).num_blocks());
}
};
TEST_F(PartitionUpdateGeneratorAndroidTest, CreatePartitionUpdate) {
auto system_contents = std::string(4096 * 2, '1');
auto boot_contents = std::string(4096 * 5, 'b');
std::map<std::string, std::string> contents = {
{"system_a", system_contents},
{"system_b", std::string(4096 * 2, 0)},
{"boot_a", boot_contents},
{"boot_b", std::string(4096 * 5, 0)},
};
SetUpBlockDevice(contents);
auto system_partition_update = generator_->CreatePartitionUpdate(
"system", device_map_["system_a"], device_map_["system_b"], 4096 * 2);
ASSERT_TRUE(system_partition_update.has_value());
CheckPartitionUpdate(
"system", system_contents, system_partition_update.value());
auto boot_partition_update = generator_->CreatePartitionUpdate(
"boot", device_map_["boot_a"], device_map_["boot_b"], 4096 * 5);
ASSERT_TRUE(boot_partition_update.has_value());
CheckPartitionUpdate("boot", boot_contents, boot_partition_update.value());
}
TEST_F(PartitionUpdateGeneratorAndroidTest, GenerateOperations) {
auto system_contents = std::string(4096 * 10, '2');
auto boot_contents = std::string(4096 * 5, 'b');
std::map<std::string, std::string> contents = {
{"system_a", system_contents},
{"system_b", std::string(4096 * 10, 0)},
{"boot_a", boot_contents},
{"boot_b", std::string(4096 * 5, 0)},
{"vendor_a", ""},
{"vendor_b", ""},
{"persist", ""},
};
SetUpBlockDevice(contents);
std::vector<PartitionUpdate> update_list;
ASSERT_TRUE(generator_->GenerateOperationsForPartitionsNotInPayload(
0, 1, std::set<std::string>{"vendor"}, &update_list));
ASSERT_EQ(2u, update_list.size());
CheckPartitionUpdate("boot", boot_contents, update_list[0]);
CheckPartitionUpdate("system", system_contents, update_list[1]);
}
} // namespace chromeos_update_engine
|
