1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18 #include <liblp/builder.h>
19 #include <liblp/liblp.h>
20
21 #include "utility.h"
22
23 using namespace android;
24 using namespace android::fs_mgr;
25
TEST(liblp,SlotNumberForSlotSuffix)26 TEST(liblp, SlotNumberForSlotSuffix) {
27 EXPECT_EQ(SlotNumberForSlotSuffix(""), 0);
28 EXPECT_EQ(SlotNumberForSlotSuffix("a"), 0);
29 EXPECT_EQ(SlotNumberForSlotSuffix("_a"), 0);
30 EXPECT_EQ(SlotNumberForSlotSuffix("b"), 1);
31 EXPECT_EQ(SlotNumberForSlotSuffix("_b"), 1);
32 EXPECT_EQ(SlotNumberForSlotSuffix("_c"), 0);
33 EXPECT_EQ(SlotNumberForSlotSuffix("_d"), 0);
34 }
35
TEST(liblp,SlotSuffixForSlotNumber)36 TEST(liblp, SlotSuffixForSlotNumber) {
37 EXPECT_EQ(SlotSuffixForSlotNumber(0), "_a");
38 EXPECT_EQ(SlotSuffixForSlotNumber(1), "_b");
39 }
40
TEST(liblp,GetMetadataOffset)41 TEST(liblp, GetMetadataOffset) {
42 LpMetadataGeometry geometry = {LP_METADATA_GEOMETRY_MAGIC,
43 sizeof(geometry),
44 {0},
45 16384,
46 4,
47 4096};
48 static const uint64_t start = LP_PARTITION_RESERVED_BYTES;
49 EXPECT_EQ(GetPrimaryMetadataOffset(geometry, 0), start + 8192);
50 EXPECT_EQ(GetPrimaryMetadataOffset(geometry, 1), start + 8192 + 16384);
51 EXPECT_EQ(GetPrimaryMetadataOffset(geometry, 2), start + 8192 + 16384 * 2);
52 EXPECT_EQ(GetPrimaryMetadataOffset(geometry, 3), start + 8192 + 16384 * 3);
53
54 static const uint64_t backup_start = start + 8192 + 16384 * 4;
55 EXPECT_EQ(GetBackupMetadataOffset(geometry, 3), backup_start + 16384 * 3);
56 EXPECT_EQ(GetBackupMetadataOffset(geometry, 2), backup_start + 16384 * 2);
57 EXPECT_EQ(GetBackupMetadataOffset(geometry, 1), backup_start + 16384 * 1);
58 EXPECT_EQ(GetBackupMetadataOffset(geometry, 0), backup_start + 16384 * 0);
59 }
60
TEST(liblp,AlignTo)61 TEST(liblp, AlignTo) {
62 EXPECT_EQ(AlignTo(37, 0), 37);
63 EXPECT_EQ(AlignTo(1024, 1024), 1024);
64 EXPECT_EQ(AlignTo(555, 1024), 1024);
65 EXPECT_EQ(AlignTo(555, 1000), 1000);
66 EXPECT_EQ(AlignTo(0, 1024), 0);
67 EXPECT_EQ(AlignTo(54, 32, 30), 62);
68 EXPECT_EQ(AlignTo(32, 32, 30), 62);
69 EXPECT_EQ(AlignTo(17, 32, 30), 30);
70 }
71
TEST(liblp,GetPartitionSlotSuffix)72 TEST(liblp, GetPartitionSlotSuffix) {
73 EXPECT_EQ(GetPartitionSlotSuffix("system"), "");
74 EXPECT_EQ(GetPartitionSlotSuffix("_"), "");
75 EXPECT_EQ(GetPartitionSlotSuffix("_a"), "");
76 EXPECT_EQ(GetPartitionSlotSuffix("system_a"), "_a");
77 EXPECT_EQ(GetPartitionSlotSuffix("system_b"), "_b");
78 }
79
80 namespace android {
81 namespace fs_mgr {
82 // Equality comparison for testing. In reality, equality of device_index doesn't
83 // necessary mean equality of the block device.
operator ==(const LinearExtent & l,const LinearExtent & r)84 bool operator==(const LinearExtent& l, const LinearExtent& r) {
85 return l.device_index() == r.device_index() && l.physical_sector() == r.physical_sector() &&
86 l.end_sector() == r.end_sector();
87 }
88 } // namespace fs_mgr
89 } // namespace android
90
GetPartitionExtents(Partition * p)91 static std::vector<LinearExtent> GetPartitionExtents(Partition* p) {
92 std::vector<LinearExtent> extents;
93 for (auto&& extent : p->extents()) {
94 auto linear_extent = extent->AsLinearExtent();
95 if (!linear_extent) return {};
96 extents.push_back(*linear_extent);
97 }
98 return extents;
99 }
100
TEST(liblp,UpdateMetadataForInPlaceSnapshot)101 TEST(liblp, UpdateMetadataForInPlaceSnapshot) {
102 using std::unique_ptr;
103
104 unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(1024 * 1024, 1024, 2);
105 ASSERT_NE(builder, nullptr);
106
107 ASSERT_TRUE(builder->AddGroup("group_a", 256 * 1024));
108 Partition* system_a = builder->AddPartition("system_a", "group_a", LP_PARTITION_ATTR_READONLY);
109 ASSERT_NE(system_a, nullptr);
110 ASSERT_TRUE(builder->ResizePartition(system_a, 40 * 1024));
111 Partition* vendor_a = builder->AddPartition("vendor_a", "group_a", LP_PARTITION_ATTR_READONLY);
112 ASSERT_NE(vendor_a, nullptr);
113 ASSERT_TRUE(builder->ResizePartition(vendor_a, 20 * 1024));
114
115 ASSERT_TRUE(builder->AddGroup("group_b", 258 * 1024));
116 Partition* system_b = builder->AddPartition("system_b", "group_b", LP_PARTITION_ATTR_READONLY);
117 ASSERT_NE(system_b, nullptr);
118 ASSERT_TRUE(builder->ResizePartition(system_b, 36 * 1024));
119 Partition* vendor_b = builder->AddPartition("vendor_b", "group_b", LP_PARTITION_ATTR_READONLY);
120 ASSERT_NE(vendor_b, nullptr);
121 ASSERT_TRUE(builder->ResizePartition(vendor_b, 32 * 1024));
122
123 auto system_a_extents = GetPartitionExtents(system_a);
124 ASSERT_FALSE(system_a_extents.empty());
125
126 auto vendor_a_extents = GetPartitionExtents(vendor_a);
127 ASSERT_FALSE(vendor_a_extents.empty());
128
129 auto metadata = builder->Export();
130 ASSERT_NE(nullptr, metadata);
131
132 ASSERT_TRUE(UpdateMetadataForInPlaceSnapshot(metadata.get(), 0, 1));
133
134 auto new_builder = MetadataBuilder::New(*metadata);
135 ASSERT_NE(nullptr, new_builder);
136
137 EXPECT_EQ(nullptr, new_builder->FindGroup("group_a"));
138 EXPECT_EQ(nullptr, new_builder->FindPartition("system_a"));
139 EXPECT_EQ(nullptr, new_builder->FindPartition("vendor_a"));
140
141 auto group_b = new_builder->FindGroup("group_b");
142 ASSERT_NE(nullptr, group_b);
143 ASSERT_EQ(256 * 1024, group_b->maximum_size());
144
145 auto new_system_b = new_builder->FindPartition("system_b");
146 ASSERT_NE(nullptr, new_system_b);
147 EXPECT_EQ(40 * 1024, new_system_b->size());
148 auto new_system_b_extents = GetPartitionExtents(new_system_b);
149 EXPECT_EQ(system_a_extents, new_system_b_extents);
150
151 auto new_vendor_b = new_builder->FindPartition("vendor_b");
152 ASSERT_NE(nullptr, new_vendor_b);
153 EXPECT_EQ(20 * 1024, new_vendor_b->size());
154 auto new_vendor_b_extents = GetPartitionExtents(new_vendor_b);
155 EXPECT_EQ(vendor_a_extents, new_vendor_b_extents);
156 }
157