| /* |
| * Copyright (C) 2017 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 "CompatibilityMatrix.h" |
| |
| #include <iostream> |
| #include <utility> |
| |
| #include <android-base/strings.h> |
| |
| #include "parse_string.h" |
| #include "parse_xml.h" |
| #include "utils.h" |
| |
| namespace android { |
| namespace vintf { |
| |
| bool CompatibilityMatrix::addKernel(MatrixKernel&& kernel, std::string* error) { |
| if (mType != SchemaType::FRAMEWORK) { |
| if (error) { |
| *error = "Cannot add <kernel> to a " + to_string(mType) + " compatibility matrix."; |
| } |
| return false; |
| } |
| |
| auto it = framework.mKernels.begin(); |
| for (; it != framework.mKernels.end(); ++it) { |
| if (it->minLts() == kernel.minLts()) { |
| break; |
| } |
| if (it->minLts().version == kernel.minLts().version && |
| it->minLts().majorRev == kernel.minLts().majorRev) { |
| if (error) { |
| *error = "Kernel version mismatch; cannot add " + to_string(kernel.minLts()) + |
| " because " + to_string(it->minLts()) + " was added."; |
| } |
| return false; |
| } |
| } |
| |
| bool seenVersion = it != framework.mKernels.end(); |
| |
| if (seenVersion) { |
| // If no conditions, must be the first among the same minLts |
| // because O libvintf only checks the first <kernel> tag that version matches. |
| if (kernel.conditions().empty()) { |
| // Found first <kernel> with the same minLts. |
| // Append config if it does not have <condition>s, else error. |
| if (it->conditions().empty()) { |
| const auto& configs = kernel.configs(); |
| it->mConfigs.insert(it->mConfigs.end(), configs.begin(), configs.end()); |
| } else { |
| if (error) { |
| *error = |
| "Base compatibility matrix has <condition> for the first <kernel> " |
| "with minlts " + |
| to_string(kernel.minLts()) + " for unknown reason."; |
| } |
| return false; |
| } |
| return true; |
| } |
| } else { |
| // First <kernel> of a minLts must not have <condition>'s for backwards compatibility |
| // with O libvintf. |
| if (!kernel.conditions().empty()) { |
| framework.mKernels.push_back(MatrixKernel(KernelVersion{kernel.minLts()}, {})); |
| } |
| } |
| |
| framework.mKernels.push_back(std::move(kernel)); |
| return true; |
| } |
| |
| SchemaType CompatibilityMatrix::type() const { |
| return mType; |
| } |
| |
| Level CompatibilityMatrix::level() const { |
| return mLevel; |
| } |
| |
| Version CompatibilityMatrix::getMinimumMetaVersion() const { |
| // TODO(b/62801658): this needs to depend on whether there are 1.1 requirements |
| // (e.g. required <xmlfile> entry) |
| return {1, 0}; |
| } |
| |
| status_t CompatibilityMatrix::fetchAllInformation(const FileSystem* fileSystem, |
| const std::string& path, std::string* error) { |
| return details::fetchAllInformation(fileSystem, path, gCompatibilityMatrixConverter, this, |
| error); |
| } |
| |
| std::string CompatibilityMatrix::getXmlSchemaPath(const std::string& xmlFileName, |
| const Version& version) const { |
| using std::literals::string_literals::operator""s; |
| auto range = getXmlFiles(xmlFileName); |
| for (auto it = range.first; it != range.second; ++it) { |
| const MatrixXmlFile& matrixXmlFile = it->second; |
| if (matrixXmlFile.versionRange().contains(version)) { |
| if (!matrixXmlFile.overriddenPath().empty()) { |
| return matrixXmlFile.overriddenPath(); |
| } |
| return "/"s + (type() == SchemaType::DEVICE ? "vendor" : "system") + "/etc/" + |
| xmlFileName + "_V" + std::to_string(matrixXmlFile.versionRange().majorVer) + |
| "_" + std::to_string(matrixXmlFile.versionRange().maxMinor) + "." + |
| to_string(matrixXmlFile.format()); |
| } |
| } |
| return ""; |
| } |
| |
| // Split existingHal into a HAL that contains only interface/instance and a HAL |
| // that does not contain it. Return the HAL that contains only interface/instance. |
| // - Return nullptr if existingHal does not contain interface/instance |
| // - Return existingHal if existingHal contains only interface/instance |
| // - Remove interface/instance from existingHal, and return a new MatrixHal (that is added |
| // to "this") that contains only interface/instance. |
| MatrixHal* CompatibilityMatrix::splitInstance(MatrixHal* existingHal, const std::string& interface, |
| const std::string& instanceOrPattern, bool isRegex) { |
| bool found = false; |
| bool foundOthers = false; |
| existingHal->forEachInstance([&](const auto& matrixInstance) { |
| bool interfaceMatch = matrixInstance.interface() == interface; |
| bool instanceMatch = false; |
| if (matrixInstance.isRegex() && isRegex) { |
| instanceMatch = (matrixInstance.regexPattern() == instanceOrPattern); |
| } else if (!matrixInstance.isRegex() && !isRegex) { |
| instanceMatch = (matrixInstance.exactInstance() == instanceOrPattern); |
| } |
| |
| bool match = interfaceMatch && instanceMatch; |
| |
| found |= match; |
| foundOthers |= (!match); |
| |
| return !found || !foundOthers; |
| }); |
| |
| if (!found) { |
| return nullptr; |
| } |
| |
| if (!foundOthers) { |
| return existingHal; |
| } |
| |
| existingHal->removeInstance(interface, instanceOrPattern, isRegex); |
| MatrixHal copy = *existingHal; |
| copy.clearInstances(); |
| copy.insertInstance(interface, instanceOrPattern, isRegex); |
| |
| return addInternal(std::move(copy)); |
| } |
| |
| // Add all package@other_version::interface/instance as an optional instance. |
| // If package@this_version::interface/instance is in this (that is, some instance |
| // with the same package and interface and instance exists), then other_version is |
| // considered a possible replacement to this_version. |
| // See LibVintfTest.AddOptionalHal* tests for details. |
| bool CompatibilityMatrix::addAllHalsAsOptional(CompatibilityMatrix* other, std::string* error) { |
| if (other == nullptr || other->level() <= level()) { |
| return true; |
| } |
| |
| for (auto& pair : other->mHals) { |
| const std::string& name = pair.first; |
| MatrixHal& halToAdd = pair.second; |
| |
| std::set<std::pair<std::string, std::string>> insertedInstances; |
| std::set<std::pair<std::string, std::string>> insertedRegex; |
| auto existingHals = getHals(name); |
| |
| halToAdd.forEachInstance([&](const std::vector<VersionRange>& versionRanges, |
| const std::string& interface, |
| const std::string& instanceOrPattern, bool isRegex) { |
| for (auto* existingHal : existingHals) { |
| MatrixHal* splitInstance = |
| this->splitInstance(existingHal, interface, instanceOrPattern, isRegex); |
| if (splitInstance != nullptr) { |
| splitInstance->insertVersionRanges(versionRanges); |
| if (isRegex) { |
| insertedRegex.insert(std::make_pair(interface, instanceOrPattern)); |
| } else { |
| insertedInstances.insert(std::make_pair(interface, instanceOrPattern)); |
| } |
| } |
| } |
| return true; |
| }); |
| |
| // Add the remaining instances. |
| for (const auto& pair : insertedInstances) { |
| halToAdd.removeInstance(pair.first, pair.second, false /* isRegex */); |
| } |
| for (const auto& pair : insertedRegex) { |
| halToAdd.removeInstance(pair.first, pair.second, true /* isRegex */); |
| } |
| |
| if (halToAdd.instancesCount() > 0) { |
| halToAdd.setOptional(true); |
| if (!add(std::move(halToAdd))) { |
| if (error) { |
| *error = "Cannot add HAL " + name + " for unknown reason."; |
| } |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| bool CompatibilityMatrix::addAllXmlFilesAsOptional(CompatibilityMatrix* other, std::string* error) { |
| if (other == nullptr || other->level() <= level()) { |
| return true; |
| } |
| for (auto& pair : other->mXmlFiles) { |
| const std::string& name = pair.first; |
| MatrixXmlFile& xmlFileToAdd = pair.second; |
| |
| xmlFileToAdd.mOptional = true; |
| if (!addXmlFile(std::move(xmlFileToAdd))) { |
| if (error) { |
| *error = "Cannot add XML File " + name + " for unknown reason."; |
| } |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // Merge Kernel. |
| // Add <kernel> from exact "level", then optionally add <kernel> from high levels to low levels. |
| // For example, (each letter is a kernel version x.y.z) |
| // 1.xml: A1, B1 |
| // 2.xml: B2, C2, D2 |
| // 3.xml: D3, E3 |
| // Then the combined 1.xml should have |
| // A1, B1 (from 1.xml, required), C2, D2, E3 (optional, use earliest possible). |
| bool CompatibilityMatrix::addAllKernels(CompatibilityMatrix* other, std::string* error) { |
| for (MatrixKernel& kernel : other->framework.mKernels) { |
| KernelVersion ver = kernel.minLts(); |
| if (!addKernel(std::move(kernel), error)) { |
| if (error) { |
| *error = "Cannot add kernel version " + to_string(ver) + ": " + *error; |
| } |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool CompatibilityMatrix::addAllKernelsAsOptional(CompatibilityMatrix* other, std::string* error) { |
| if (other == nullptr || other->level() <= level()) { |
| return true; |
| } |
| |
| for (MatrixKernel& kernelToAdd : other->framework.mKernels) { |
| bool exists = |
| std::any_of(this->framework.mKernels.begin(), this->framework.mKernels.end(), |
| [&kernelToAdd](const MatrixKernel& existing) { |
| return kernelToAdd.minLts().version == existing.minLts().version && |
| kernelToAdd.minLts().majorRev == existing.minLts().majorRev; |
| }); |
| |
| if (exists) { |
| // Shouldn't retroactively add requirements to minLts(), so ignore this. |
| // This happens even when kernelToAdd.conditions() != existing.conditions(). |
| continue; |
| } |
| |
| KernelVersion minLts = kernelToAdd.minLts(); |
| if (!addKernel(std::move(kernelToAdd), error)) { |
| if (error) { |
| *error = "Cannot add " + to_string(minLts) + ": " + *error; |
| } |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| template <typename T> |
| static bool mergeField(T* dst, T* src) { |
| static const T kEmpty{}; |
| if (*dst == *src) { |
| return true; // no conflict |
| } |
| if (*src == kEmpty) { |
| return true; |
| } |
| if (*dst == kEmpty) { |
| *dst = std::move(*src); |
| return true; |
| } |
| return false; |
| } |
| |
| bool CompatibilityMatrix::addSepolicy(CompatibilityMatrix* other, std::string* error) { |
| bool success = mergeField(&this->framework.mSepolicy, &other->framework.mSepolicy); |
| if (!success && error) *error = "<sepolicy> is already defined"; |
| return success; |
| } |
| |
| bool CompatibilityMatrix::addAvbMetaVersion(CompatibilityMatrix* other, std::string* error) { |
| bool success = mergeField(&this->framework.mAvbMetaVersion, &other->framework.mAvbMetaVersion); |
| if (!success && error) *error = "<avb><vbmeta-version> is already defined"; |
| return success; |
| } |
| |
| bool operator==(const CompatibilityMatrix &lft, const CompatibilityMatrix &rgt) { |
| return lft.mType == rgt.mType && lft.mLevel == rgt.mLevel && lft.mHals == rgt.mHals && |
| lft.mXmlFiles == rgt.mXmlFiles && |
| (lft.mType != SchemaType::DEVICE || |
| ( |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wdeprecated-declarations" |
| lft.device.mVndk == rgt.device.mVndk && |
| #pragma clang diagnostic pop |
| lft.device.mVendorNdk == rgt.device.mVendorNdk && |
| lft.device.mSystemSdk == rgt.device.mSystemSdk)) && |
| (lft.mType != SchemaType::FRAMEWORK || |
| (lft.framework.mKernels == rgt.framework.mKernels && |
| lft.framework.mSepolicy == rgt.framework.mSepolicy && |
| lft.framework.mAvbMetaVersion == rgt.framework.mAvbMetaVersion)); |
| } |
| |
| std::unique_ptr<CompatibilityMatrix> CompatibilityMatrix::combine( |
| Level deviceLevel, std::vector<Named<CompatibilityMatrix>>* matrices, std::string* error) { |
| // Check type. |
| for (const auto& e : *matrices) { |
| if (e.object.type() != SchemaType::FRAMEWORK) { |
| if (error) { |
| *error = "File \"" + e.name + "\" is not a framework compatibility matrix."; |
| return nullptr; |
| } |
| } |
| } |
| |
| // Matrices with unspecified (empty) level are auto-filled with deviceLevel. |
| for (auto& e : *matrices) { |
| if (e.object.level() == Level::UNSPECIFIED) { |
| e.object.mLevel = deviceLevel; |
| } |
| } |
| |
| // Add from low to high FCM version so that optional <kernel> requirements are added correctly. |
| // See comment in addAllAsOptional. |
| std::sort(matrices->begin(), matrices->end(), |
| [](const auto& x, const auto& y) { return x.object.level() < y.object.level(); }); |
| |
| auto baseMatrix = std::make_unique<CompatibilityMatrix>(); |
| baseMatrix->mLevel = deviceLevel; |
| baseMatrix->mType = SchemaType::FRAMEWORK; |
| |
| std::vector<std::string> parsedFiles; |
| for (auto& e : *matrices) { |
| if (e.object.level() < deviceLevel) { |
| continue; |
| } |
| |
| bool success = false; |
| if (e.object.level() == deviceLevel) { |
| success = baseMatrix->addAll(&e, error); |
| } else { |
| success = baseMatrix->addAllAsOptional(&e, error); |
| } |
| if (!success) { |
| if (error) { |
| *error = "Conflict when merging \"" + e.name + "\": " + *error + "\n" + |
| "Previous files:\n" + base::Join(parsedFiles, "\n"); |
| } |
| return nullptr; |
| } |
| parsedFiles.push_back(e.name); |
| } |
| |
| return baseMatrix; |
| } |
| |
| bool CompatibilityMatrix::addAll(Named<CompatibilityMatrix>* inputMatrix, std::string* error) { |
| if (!addAllHals(&inputMatrix->object, error) || !addAllXmlFiles(&inputMatrix->object, error) || |
| !addAllKernels(&inputMatrix->object, error) || !addSepolicy(&inputMatrix->object, error) || |
| !addAvbMetaVersion(&inputMatrix->object, error)) { |
| if (error) { |
| *error = "File \"" + inputMatrix->name + "\" cannot be added: " + *error + "."; |
| } |
| } |
| return true; |
| } |
| |
| bool CompatibilityMatrix::addAllAsOptional(Named<CompatibilityMatrix>* inputMatrix, |
| std::string* error) { |
| if (!addAllHalsAsOptional(&inputMatrix->object, error) || |
| !addAllXmlFilesAsOptional(&inputMatrix->object, error) || |
| !addAllKernelsAsOptional(&inputMatrix->object, error)) { |
| if (error) { |
| *error = "File \"" + inputMatrix->name + "\" cannot be added: " + *error; |
| } |
| return false; |
| } |
| // ignore <sepolicy> requirement from higher level |
| // ignore <avb> requirement from higher level |
| return true; |
| } |
| |
| bool CompatibilityMatrix::forEachInstanceOfVersion( |
| const std::string& package, const Version& expectVersion, |
| const std::function<bool(const MatrixInstance&)>& func) const { |
| for (const MatrixHal* hal : getHals(package)) { |
| bool cont = hal->forEachInstance([&](const MatrixInstance& matrixInstance) { |
| if (matrixInstance.versionRange().contains(expectVersion)) { |
| return func(matrixInstance); |
| } |
| return true; |
| }); |
| if (!cont) return false; |
| } |
| return true; |
| } |
| |
| bool CompatibilityMatrix::matchInstance(const std::string& halName, const Version& version, |
| const std::string& interfaceName, |
| const std::string& instance) const { |
| bool found = false; |
| (void)forEachInstanceOfInterface(halName, version, interfaceName, |
| [&found, &instance](const auto& e) { |
| found |= (e.matchInstance(instance)); |
| return !found; // if not found, continue |
| }); |
| return found; |
| } |
| |
| std::string CompatibilityMatrix::getVendorNdkVersion() const { |
| return type() == SchemaType::DEVICE ? device.mVendorNdk.version() : ""; |
| } |
| |
| } // namespace vintf |
| } // namespace android |
