| /* |
| * 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. |
| */ |
| |
| |
| #define LOG_TAG "libvintf" |
| |
| #include "RuntimeInfo.h" |
| |
| #include "CompatibilityMatrix.h" |
| #include "parse_string.h" |
| |
| namespace android { |
| namespace vintf { |
| |
| const std::string &RuntimeInfo::osName() const { |
| return mOsName; |
| } |
| |
| const std::string &RuntimeInfo::nodeName() const { |
| return mNodeName; |
| } |
| |
| const std::string &RuntimeInfo::osRelease() const { |
| return mOsRelease; |
| } |
| |
| const std::string &RuntimeInfo::osVersion() const { |
| return mOsVersion; |
| } |
| |
| const std::string &RuntimeInfo::hardwareId() const { |
| return mHardwareId; |
| } |
| |
| const KernelVersion &RuntimeInfo::kernelVersion() const { |
| return mKernelVersion; |
| } |
| |
| const std::map<std::string, std::string> &RuntimeInfo::kernelConfigs() const { |
| return mKernelConfigs; |
| } |
| |
| size_t RuntimeInfo::kernelSepolicyVersion() const { |
| return mKernelSepolicyVersion; |
| } |
| |
| const std::string &RuntimeInfo::cpuInfo() const { |
| return mCpuInfo; |
| } |
| |
| const Version &RuntimeInfo::bootVbmetaAvbVersion() const { |
| return mBootVbmetaAvbVersion; |
| } |
| |
| const Version &RuntimeInfo::bootAvbVersion() const { |
| return mBootAvbVersion; |
| } |
| |
| bool RuntimeInfo::matchKernelConfigs(const std::vector<KernelConfig>& matrixConfigs, |
| std::string* error) const { |
| for (const KernelConfig& matrixConfig : matrixConfigs) { |
| const std::string& key = matrixConfig.first; |
| auto it = this->mKernelConfigs.find(key); |
| if (it == this->mKernelConfigs.end()) { |
| // special case: <value type="tristate">n</value> matches if the config doesn't exist. |
| if (matrixConfig.second == KernelConfigTypedValue::gMissingConfig) { |
| continue; |
| } |
| if (error != nullptr) { |
| *error = "Missing config " + key; |
| } |
| return false; |
| } |
| const std::string& kernelValue = it->second; |
| if (!matrixConfig.second.matchValue(kernelValue)) { |
| if (error != nullptr) { |
| *error = "For config " + key + ", value = " + kernelValue + " but required " + |
| to_string(matrixConfig.second); |
| } |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool RuntimeInfo::matchKernelVersion(const KernelVersion& minLts) const { |
| return minLts.version == mKernelVersion.version && minLts.majorRev == mKernelVersion.majorRev && |
| minLts.minorRev <= mKernelVersion.minorRev; |
| } |
| |
| bool RuntimeInfo::checkCompatibility(const CompatibilityMatrix &mat, |
| std::string *error) const { |
| if (mat.mType != SchemaType::FRAMEWORK) { |
| if (error != nullptr) { |
| *error = "Should not check runtime info against " + to_string(mat.mType) |
| + " compatibility matrix."; |
| } |
| return false; |
| } |
| if (kernelSepolicyVersion() != mat.framework.mSepolicy.kernelSepolicyVersion()) { |
| if (error != nullptr) { |
| *error = "kernelSepolicyVersion = " + to_string(kernelSepolicyVersion()) |
| + " but required " + to_string(mat.framework.mSepolicy.kernelSepolicyVersion()); |
| } |
| return false; |
| } |
| |
| // mat.mSepolicy.sepolicyVersion() is checked against static |
| // HalManifest.device.mSepolicyVersion in HalManifest::checkCompatibility. |
| |
| bool foundMatchedKernelVersion = false; |
| bool foundMatchedConditions = false; |
| for (const MatrixKernel& matrixKernel : mat.framework.mKernels) { |
| if (!matchKernelVersion(matrixKernel.minLts())) { |
| continue; |
| } |
| foundMatchedKernelVersion = true; |
| // ignore this fragment if not all conditions are met. |
| if (!matchKernelConfigs(matrixKernel.conditions(), error)) { |
| continue; |
| } |
| foundMatchedConditions = true; |
| if (!matchKernelConfigs(matrixKernel.configs(), error)) { |
| return false; |
| } |
| } |
| if (!foundMatchedKernelVersion) { |
| if (error != nullptr) { |
| std::stringstream ss; |
| ss << "Framework is incompatible with kernel version " << mKernelVersion |
| << ", compatible kernel versions are"; |
| for (const MatrixKernel& matrixKernel : mat.framework.mKernels) |
| ss << " " << matrixKernel.minLts(); |
| *error = ss.str(); |
| } |
| return false; |
| } |
| if (!foundMatchedConditions) { |
| // This should not happen because first <conditions> for each <kernel> must be |
| // empty. Reject here for inconsistency. |
| if (error != nullptr) { |
| error->insert(0, "Framework match kernel version with unmet conditions:"); |
| } |
| return false; |
| } |
| if (error != nullptr) { |
| error->clear(); |
| } |
| |
| const Version &matAvb = mat.framework.mAvbMetaVersion; |
| if (mBootAvbVersion.majorVer != matAvb.majorVer || mBootAvbVersion.minorVer < matAvb.minorVer) { |
| if (error != nullptr) { |
| std::stringstream ss; |
| ss << "AVB version " << mBootAvbVersion << " does not match framework matrix " |
| << matAvb; |
| *error = ss.str(); |
| } |
| return false; |
| } |
| if (mBootVbmetaAvbVersion.majorVer != matAvb.majorVer || |
| mBootVbmetaAvbVersion.minorVer < matAvb.minorVer) { |
| if (error != nullptr) { |
| std::stringstream ss; |
| ss << "Vbmeta version " << mBootVbmetaAvbVersion << " does not match framework matrix " |
| << matAvb; |
| *error = ss.str(); |
| } |
| return false; |
| } |
| |
| return true; |
| } |
| |
| } // namespace vintf |
| } // namespace android |