1 // 2 // Copyright (C) 2010 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 "update_engine/payload_generator/full_update_generator.h" 18 19 #include <memory> 20 #include <string> 21 #include <vector> 22 23 #include <gtest/gtest.h> 24 25 #include "update_engine/common/test_utils.h" 26 #include "update_engine/payload_consumer/payload_constants.h" 27 #include "update_engine/payload_generator/extent_utils.h" 28 29 using chromeos_update_engine::test_utils::FillWithData; 30 using std::string; 31 using std::vector; 32 33 namespace chromeos_update_engine { 34 35 class FullUpdateGeneratorTest : public ::testing::Test { 36 protected: 37 void SetUp() override { 38 config_.is_delta = false; 39 config_.version.minor = kFullPayloadMinorVersion; 40 config_.hard_chunk_size = 128 * 1024; 41 config_.block_size = 4096; 42 43 EXPECT_TRUE(utils::MakeTempFile("FullUpdateTest_partition.XXXXXX", 44 &new_part_conf.path, 45 nullptr)); 46 EXPECT_TRUE(utils::MakeTempFile("FullUpdateTest_blobs.XXXXXX", 47 &out_blobs_path_, 48 &out_blobs_fd_)); 49 50 blob_file_.reset(new BlobFileWriter(out_blobs_fd_, &out_blobs_length_)); 51 part_path_unlinker_.reset(new ScopedPathUnlinker(new_part_conf.path)); 52 out_blobs_unlinker_.reset(new ScopedPathUnlinker(out_blobs_path_)); 53 } 54 55 PayloadGenerationConfig config_; 56 PartitionConfig new_part_conf{"part"}; 57 58 vector<AnnotatedOperation> aops; 59 60 // Output file holding the payload blobs. 61 string out_blobs_path_; 62 int out_blobs_fd_{-1}; 63 off_t out_blobs_length_{0}; 64 ScopedFdCloser out_blobs_fd_closer_{&out_blobs_fd_}; 65 66 std::unique_ptr<BlobFileWriter> blob_file_; 67 std::unique_ptr<ScopedPathUnlinker> part_path_unlinker_; 68 std::unique_ptr<ScopedPathUnlinker> out_blobs_unlinker_; 69 70 // FullUpdateGenerator under test. 71 FullUpdateGenerator generator_; 72 }; 73 74 TEST_F(FullUpdateGeneratorTest, RunTest) { 75 brillo::Blob new_part(9 * 1024 * 1024); 76 FillWithData(&new_part); 77 new_part_conf.size = new_part.size(); 78 79 EXPECT_TRUE(test_utils::WriteFileVector(new_part_conf.path, new_part)); 80 81 EXPECT_TRUE(generator_.GenerateOperations(config_, 82 new_part_conf, // this is ignored 83 new_part_conf, 84 blob_file_.get(), 85 &aops)); 86 int64_t new_part_chunks = new_part_conf.size / config_.hard_chunk_size; 87 EXPECT_EQ(new_part_chunks, static_cast<int64_t>(aops.size())); 88 for (off_t i = 0; i < new_part_chunks; ++i) { 89 EXPECT_EQ(1, aops[i].op.dst_extents_size()); 90 EXPECT_EQ( 91 static_cast<uint64_t>(i * config_.hard_chunk_size / config_.block_size), 92 aops[i].op.dst_extents(0).start_block()) 93 << "i = " << i; 94 EXPECT_EQ(config_.hard_chunk_size / config_.block_size, 95 aops[i].op.dst_extents(0).num_blocks()); 96 if (aops[i].op.type() != InstallOperation::REPLACE) { 97 EXPECT_EQ(InstallOperation::REPLACE_BZ, aops[i].op.type()); 98 } 99 } 100 } 101 102 // Test that if the chunk size is not a divisor of the image size, it handles 103 // correctly the last chunk of the partition. 104 TEST_F(FullUpdateGeneratorTest, ChunkSizeTooBig) { 105 config_.hard_chunk_size = 1024 * 1024; 106 config_.soft_chunk_size = config_.hard_chunk_size; 107 brillo::Blob new_part(1536 * 1024); // 1.5 MiB 108 new_part_conf.size = new_part.size(); 109 110 EXPECT_TRUE(test_utils::WriteFileVector(new_part_conf.path, new_part)); 111 112 EXPECT_TRUE(generator_.GenerateOperations(config_, 113 new_part_conf, // this is ignored 114 new_part_conf, 115 blob_file_.get(), 116 &aops)); 117 // new_part has one chunk and a half. 118 EXPECT_EQ(2U, aops.size()); 119 EXPECT_EQ(config_.hard_chunk_size / config_.block_size, 120 utils::BlocksInExtents(aops[0].op.dst_extents())); 121 EXPECT_EQ((new_part.size() - config_.hard_chunk_size) / config_.block_size, 122 utils::BlocksInExtents(aops[1].op.dst_extents())); 123 } 124 125 // Test that if the image size is much smaller than the chunk size, it handles 126 // correctly the only chunk of the partition. 127 TEST_F(FullUpdateGeneratorTest, ImageSizeTooSmall) { 128 brillo::Blob new_part(16 * 1024); 129 new_part_conf.size = new_part.size(); 130 131 EXPECT_TRUE(test_utils::WriteFileVector(new_part_conf.path, new_part)); 132 133 EXPECT_TRUE(generator_.GenerateOperations(config_, 134 new_part_conf, // this is ignored 135 new_part_conf, 136 blob_file_.get(), 137 &aops)); 138 139 // new_part has less than one chunk. 140 EXPECT_EQ(1U, aops.size()); 141 EXPECT_EQ(new_part.size() / config_.block_size, 142 utils::BlocksInExtents(aops[0].op.dst_extents())); 143 } 144 145 } // namespace chromeos_update_engine 146
