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