android10/system/libvintf/RuntimeInfo.cpp

/*
 * 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 mKernel.version();
}

const std::map<std::string, std::string> &RuntimeInfo::kernelConfigs() const {
    return mKernel.configs();
}

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::checkCompatibility(const CompatibilityMatrix& mat, std::string* error,
                                     CheckFlags::Type flags) 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.

    if (flags.isKernelEnabled()) {
        if (!mKernel.matchKernelRequirements(mat.framework.mKernels, error)) {
            return false;
        }
    }

    if (flags.isAvbEnabled()) {
        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