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      1 /*
      2  * Copyright (C) 2017 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 #ifndef ANDROID_VINTF_RUNTIME_INFO_H
     18 #define ANDROID_VINTF_RUNTIME_INFO_H
     19 
     20 #include "Version.h"
     21 
     22 #include <map>
     23 #include <string>
     24 #include <vector>
     25 
     26 #include <utils/Errors.h>
     27 
     28 #include "DisabledChecks.h"
     29 #include "MatrixKernel.h"
     30 #include "Version.h"
     31 
     32 namespace android {
     33 namespace vintf {
     34 
     35 struct CompatibilityMatrix;
     36 
     37 // Runtime Info sent to OTA server
     38 struct RuntimeInfo {
     39 
     40     RuntimeInfo() {}
     41 
     42     // /proc/version
     43     // utsname.sysname
     44     const std::string &osName() const;
     45     // utsname.nodename
     46     const std::string &nodeName() const;
     47     // utsname.release
     48     const std::string &osRelease() const;
     49     // utsname.version
     50     const std::string &osVersion() const;
     51     // utsname.machine
     52     const std::string &hardwareId() const;
     53     // extract from utsname.release
     54     const KernelVersion &kernelVersion() const;
     55 
     56     const std::map<std::string, std::string> &kernelConfigs() const;
     57 
     58     const Version &bootVbmetaAvbVersion() const;
     59     const Version &bootAvbVersion() const;
     60 
     61     // /proc/cpuinfo
     62     const std::string &cpuInfo() const;
     63 
     64     // /sys/fs/selinux/policyvers
     65     size_t kernelSepolicyVersion() const;
     66 
     67     // Return whether this RuntimeInfo works with the given compatibility matrix. Return true if:
     68     // - mat is a framework compat-mat
     69     // - sepolicy.kernel-sepolicy-version == kernelSepolicyVersion()
     70     // - /proc/config.gz matches the requirements. Note that /proc/config.gz is read when the
     71     //   RuntimeInfo object is created (the first time VintfObject::GetRuntimeInfo is called),
     72     //   not when RuntimeInfo::checkCompatibility is called.
     73     // - avb-vbmetaversion matches related sysprops
     74     bool checkCompatibility(const CompatibilityMatrix& mat, std::string* error = nullptr,
     75                             DisabledChecks disabledChecks = ENABLE_ALL_CHECKS) const;
     76 
     77    private:
     78     friend struct RuntimeInfoFetcher;
     79     friend class VintfObject;
     80     friend struct LibVintfTest;
     81     friend std::string dump(const RuntimeInfo &ki);
     82 
     83     status_t fetchAllInformation();
     84 
     85     // mKernelVersion = x'.y'.z', minLts = x.y.z,
     86     // match if x == x' , y == y' , and z <= z'.
     87     bool matchKernelVersion(const KernelVersion& minLts) const;
     88     // return true if all kernel configs in matrixConfigs matches.
     89     bool matchKernelConfigs(const std::vector<KernelConfig>& matrixConfigs,
     90                             std::string* error = nullptr) const;
     91 
     92     // /proc/config.gz
     93     // Key: CONFIG_xxx; Value: the value after = sign.
     94     std::map<std::string, std::string> mKernelConfigs;
     95     std::string mOsName;
     96     std::string mNodeName;
     97     std::string mOsRelease;
     98     std::string mOsVersion;
     99     std::string mHardwareId;
    100     KernelVersion mKernelVersion;
    101 
    102     std::vector<std::string> mSepolicyFilePaths;
    103     std::string mCpuInfo;
    104     Version mBootVbmetaAvbVersion;
    105     Version mBootAvbVersion;
    106 
    107     size_t mKernelSepolicyVersion = 0u;
    108 };
    109 
    110 } // namespace vintf
    111 } // namespace android
    112 
    113 #endif // ANDROID_VINTF_RUNTIME_INFO_H
    114