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RK3326 Android8.0 HAL添加定义服务流程是怎样的

问答对人有帮助，内容完整，我也想知道答案 0 RK3326 Android8.0 HAL添加定义服务流程是怎样的？ 0
2022-2-17 07:39:00　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × liutiefu 该类别下有 26 个回答。邀请回答 ze55me 该类别下有 20 个回答。邀请回答 tigerwang711 该类别下有 20 个回答。邀请回答杀狼000 该类别下有 19 个回答。邀请回答 zhuzb0754 该类别下有 19 个回答。邀请回答 YYXIAO 该类别下有 18 个回答。邀请回答冰箱洗衣机该类别下有 18 个回答。邀请回答 CDCNKA 该类别下有 17 个回答。邀请回答 jjll652 该类别下有 17 个回答。邀请回答河神大人该类别下有 17 个回答。邀请回答 mede1001 该类别下有 17 个回答。邀请回答安德森大该类别下有 17 个回答。邀请回答世态薄凉该类别下有 16 个回答。邀请回答熊本熊该类别下有 16 个回答。邀请回答 YOYOOO 该类别下有 16 个回答。邀请回答麻酱该类别下有 16 个回答。邀请回答 dfgsdf 该类别下有 15 个回答。邀请回答 szj0213 该类别下有 15 个回答。邀请回答梅利号该类别下有 15 个回答。邀请回答 vinww特烦恼该类别下有 15 个回答。邀请回答举报李泽坚相关推荐 • RK3326 Android系统Hal层是怎样去添加服务的 1804 • 如何去实现RK3326 android10.0(Q) OTA升级呢 3504 • 怎样将RK3326的uart2串口修改成普通串口使用呢 1287 • 怎样去设置RK3326 Android8.1系统的默认语言呢 1206 • 怎样做才能让RK3326 Android为自己的APK服务开启无障碍默认权限呢 1208 • 怎样去修改RK3326的GPLL展频呢 1740 • 请问RK3326 android 8.1默认打开截图权限该怎样去实现呢 1048 • RK3326 android10.0预装APP可卸载不恢复的原因是什么 1681 • 浅谈RK3326平台系统编译过程中遇到的问题及其解决方法 1154 • 如何去实现RK3326 android系统的开关机动画设计呢 1799 2个回答

答案对人有帮助，有参考价值 0 添加服务流程一。hardware1.11 编写的。hal 目录新建他的文件夹，他下新建了 1 个文件夹。新建 types.hal （非必要，用于定义结构体，复杂可在此定义） //types.halpackage ;struct DeviceType{ int32_t 类型; 字符串状态；}；struct DeviceEvent{ int32_t 什么；字符串味精;}; 新建IHet.hal (主接口) package ;import IDeviceCallback;interface IHet { setState(DeviceType type) generate (string result); getState(int32_t type) 生成（字符串结果）；// 变量类型string 不是String setCallback(IDeviceCallback callback) generate (bool res); // 变量类型 bool 不是boolean release();};1.2 使用hidl-gen 生成生成 source ./build/envsetup.shlunch aosp_car_x86_64-engmake -j4make hidl-gen -j4 设置临时变量 PACKAGE=android.hardware.het@1.0LOC=hardware/interfaces/het/1.0/default 使用hidl -gen 生成default目录里的C++文件 hidl-gen -o $LOC -Lc++-impl -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport $PACKAGE 使用hidl-gen生成default目录里的Android .bp文件 hidl-gen -o $LOC -Landroidbp-impl -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport $PACKAGE 使用update-makefiles.sh 生成1.0目录下的Android.bp ./ hardware/interfaces/update-makefiles.sh此时的目录结构为 +-- 1.0¦ +-- Android.bp¦ +-- Android.mk¦ +-- default¦ ¦ +-- Android.bp¦ +- -¦ ¦ +-- Het.cpp¦ ¦ +-- Het.h¦ ¦ +-- service.cpp¦ +-- IDeviceCallback.hal¦ +-- IHet.hal¦ +-- types.hal+-- Android.bp DeviceCallback.cpp和DeviceCallback.h没用删掉，并修改默认的Android.bp删掉DeviceCallback.cpp 1.3实现.cpp 实现hidl-gen生成的het.cpp 添加启动服务新建启动脚本 //types.hal package android.hardware.het@1.0; struct DeviceType{ int32_t type; string state; }; struct DeviceEvent{ int32_t what; string msg; }; 新建 IHet.hal (主接口) package android.hardware.het@1.0; import IDeviceCallback; interface IHet { setState(DeviceType type) generates (string result); getState(int32_t type) generates (string result); //变量类型string 不是String setCallback(IDeviceCallback callback) generates (bool res); //变量类型bool 不是boolean release(); }; 1.2 使用hidl-gen生成变量 source ./build/envsetup.sh lunch aosp_car_x86_64-eng make -j4 make hidl-gen -j4 设置临时变量 PACKAGE=android.hardware.het@1.0 LOC=hardware/interfaces/het/1.0/default 使用hidl-gen生成default目录里的C++文件 hidl-gen -o $LOC -Lc++-impl -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport $PACKAGE 使用hidl-gen生成default目录里的Android.bp文件 hidl-gen -o $LOC -Landroidbp-impl -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport $PACKAGE 使用update-makefiles.sh生成1.0目录下的Android.bp ./hardware/interfaces/update-makefiles.sh 此时的目录结构为 +-- 1.0 ¦ +-- Android.bp ¦ +-- Android.mk ¦ +-- default ¦ ¦ +-- Android.bp ¦ ¦ +-- android.hardware.het@1.0-service.rc ¦ ¦ +-- Het.cpp ¦ ¦ +-- Het.h ¦ ¦ +-- service.cpp ¦ +-- IDeviceCallback.hal ¦ +-- IHet.hal ¦ +-- types.hal +-- Android.bp DeviceCallback.cpp和 DeviceCallback.h没用删掉，并修改default里的Android.bp 删掉DeviceCallback.cpp 1.3 实现.cpp 实现由hidl-gen生成的het.cpp 添加启动service 新建android.hardware.het@1.0-service.rc 启动脚本 service het-hal-1-0 /vendor/bin/hw/android.hardware.het@1.0-service class hal user system group system 新建service.cpp 这里使用绑定式直通式为注释部分 #define LOG_TAG "android.hardware.het@1.0-service" #include #include #include #include #include "Het.h" using android::hardware::configureRpcThreadpool; using android::hardware::joinRpcThreadpool; using android::hardware::het::V1_0::IHet; using android::hardware::het::V1_0::implementation::Het; //using android::hardware::defaultPassthroughServiceImplementation; //passthrough mode using android::sp; int main() { #if 0 return defaultPassthroughServiceImplementation(); //passthrough mode #else configureRpcThreadpool(4, true); sp het = new Het(); auto status = het->registerAsService(); CHECK_EQ(status, android::OK) << "Failed to register het HAL implementation"; joinRpcThreadpool(); return 0; // joinRpcThreadpool shouldn't exit #endif } 修改Android.bp cc_library_shared { name: "android.hardware.het@1.0-impl", defaults: ["hidl_defaults"], srcs: ["Het.cpp",], shared_libs: [ "libbase", "liblog", "libdl", "libutils", "libhardware", "libhidlbase", "libhidltransport", "android.hardware.het@1.0", ], } cc_binary { vendor: true, relative_install_path: "hw", defaults: ["hidl_defaults"], name: "android.hardware.het@1.0-service", init_rc: ["android.hardware.het@1.0-service.rc"], srcs: ["Het.cpp", "service.cpp",], shared_libs: [ "libbase", "liblog", "libdl", "libutils", "libhardware", "libhidlbase", "libhidltransport", "android.hardware.het@1.0", ], } 调用 update-makefiles.sh更新一下。编译 mmm ./hardware/interfaces/test/1.0 编译输出 vendor/lib/hw/android.hardware.het@1.0-impl.so vendor/bin/hw/android.hardware.het@1.0-service vendor/etc/init/android.hardware.het@1.0-service.rc system/lib/android.hardware.het@1.0.so 二. device部分在aospdevicerockchipcommonmanifest.xml文件中添加het服务 android.hardware.het hwbinder 1.0 IHet default 在aospdevicerockchiprk3288device.mk中添加het service PRODUCT_PACKAGES += android.hardware.het@1.0-impl android.hardware.het@1.0-service [/email][email=android.hardware.het@1.0]三. SELinux 部分---- halo 也设置了不同的sepoli 目录，以供Google 进行区分。/system/sepolicy public: android 共享和供应商的sepolicy 定义，通常情况下，意味着供应商或开发者可能会增加一些权限。系统/供应商通用的一般用途和属性的定义，绝不允许限制等一些类型的会。私有：通常用于系统映像的内部使用，不正确或开放。这个编译到系统映像中。它可以引用公共下的相关定义，将这个目录编译到vendor image中。但它仍然可以对系统映像里面的模块sepolicy(module 在public下进行声明); 在约束约束了Google GTS 测试。映射版本的sepolicy并导入，才可能在老版本的系统上使用。即包括两方面的类型，新增加版本的类型，以及旧版本设置的新私有版本，公共版本，新版本更新版本。本例修改为aospsystemsepolicy，该目录下有vendor public private(注意public下的同样要修改到prebuiltsapi26.0下的文件，否则编译会报错) 3.1 vendorfile_contexts 添加 /(vendor\|system/vendor)/bin/hw/android.hardware.het@1.0-service u:object_r:hal_het_default_exec:s0 /(vendor\|system/vendor)/lib(64)?/hw/android.hardware.het@1.0-impl.so u:object_r:same_process_hal_file:s0 #file_contexts文件保存系统中所有文件的安全上下文定义，每行前半部分是文件的路径，后面是它的安全上下文的定义(hal_test_default_exec) 新建hal_het_default.te #定义一个名字为 hal_het_default 的type #TYPE是定义主体和客体所属的类型，对于进程而言，它的类型也称为domian。 #通常主体的type具有domian属性，因此，我们也把主体的type称为domain，将domain设置为hal_het_default的属性，表明zygote是用来描述进程的安全上下文的。 type hal_het_default, domain; hal_server_domain(hal_het_default, hal_het); type hal_het_default_exec, exec_type, file_type, vendor_file_type; init_daemon_domain(hal_het_default) allow hal_het_default hwservicemanager_prop:file r_file_perms; allow hal_het_default hal_het_hwservice:hwservice_manager { add find }; allow hal_het_default ttyS_device:chr_file rw_file_perms; allow hal_het_default input_device:chr_file rw_file_perms; allow hal_het_default input_device:dir { search }; allow hal_het_default hidl_base_hwservice:hwservice_manager add; 3.2 public目录 attributes 添加 attribute hal_het; expandattribute hal_het true; attribute hal_het_client; expandattribute hal_het_client true; attribute hal_het_server; expandattribute hal_het_server false; #hal_attribute(het); hwservice.te 添加 type hal_het_hwservice, hwservice_manager_type; 新建 hal_het.te # HwBinder IPC from client to server, and callbacks binder_call(hal_het_client, hal_het_server) binder_call(hal_het_server, hal_het_client) add_hwservice(hal_het_server, hal_het_hwservice) allow hal_het_client hal_het_hwservice:hwservice_manager find; 将以上修改同步到aospsystemsepolicyprebuiltsapi26.0public 3.3 private目录 hwservice_contexts 添加 android.hardware.het::IHet u:object_r:hal_het_hwservice:s0 private/compat/26.0/26.0.ignore.cil 添加 hal_het_hwservice 将以上修改同步到aospsystemsepolicyprebuiltsapi26.0private 四. 客户端实现 4.1 system_service实现 4.1.1 HetManager端在目录aospframeworksbasecorejavaandroidos里新建het目录创建IHetService.aidl 对应hal层四个功能 package android.os.het; import android.os.het.IDeviceEventListener; // Declare any non-default types here with import statements interface IHetService { /** * Demonstrates some basic types that you can use as parameters * and return values in AIDL. / String setState(int type, String state); String getState(int type); boolean setDeviceEventListener(IDeviceEventListener listener); void release(); } 创建IDeviceEventListener.aidl， IHetService.aidl 里传递的自定类 package android.os.het; import android.os.het.DeviceListenerEvent; // Declare any non-default types here with import statements interface IDeviceEventListener { /* * Demonstrates some basic types that you can use as parameters * and return values in AIDL. / void onEvent (inout DeviceListenerEvent event); } 创建DeviceListenerEvent.aidl， IDeviceEventListener.aidl 里传递的 event 类型变量 package android.os.het; // Declare any non-default types here with import statements parcelable DeviceListenerEvent; 创建DeviceListerEvent.java package android.os.het; import android.os.Parcel; import android.os.Parcelable; /* * android.os.het.DeviceListenerEvent / public class DeviceListenerEvent implements Parcelable { private int what; private String msg; public DeviceListenerEvent(int what, String msg) { this.what = what; this.msg = msg; } public DeviceListenerEvent(Parcel in) { what = in.readInt(); msg = in.readString(); } public void setWhat(int what) { this.what = what; } public void setMsg(String msg) { this.msg = msg; } public int getWhat() { return what; } public String getMsg() { return msg; } public static final Creator CREATOR = new Creator() { @Override public DeviceListenerEvent createFromParcel(Parcel in) { return new DeviceListenerEvent(in); } @Override public DeviceListenerEvent[] newArray(int size) { return new DeviceListenerEvent[size]; } }; @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeInt(what); dest.writeString(msg); } /* * 从parcel中读取，从parcel中读取，顺序与write一致 * 如果要支持为 out 或者 inout 的定向 tag 的话，需要实现 readFromParcel() 方法 * @param dest */ public void readFromParcel(Parcel dest) { what = dest.readInt(); msg = dest.readString(); } }

2022-2-17 14:10:58 评论举报成尔秩

答案对人有帮助，有参考价值 0 创建HetManager.java 供上层APP调用 package android.os.het; /** * ---------------------------------------------------------------- * Copyright (C) 2014-2020, by het, Shenzhen, All rights reserved. * ---------------------------------------------------------------- * * 描述: HetManager * 作者: lei * 日期: 2020/6/29 / import android.os.RemoteException; import android.util.Log; import android.os.het.IHetService; import android.content.Context; public class HetManager { private final Context mContext; private IHetService mService; public static final String TAG = "HetManager"; public HetManager(IHetService server) { Log.d(TAG, "HetManager: "); mContext = null; mService = server; } public HetManager(Context context, IHetService server) { Log.d(TAG, "HetManager: "); mContext = context; mService = server; } public String setState(int type, String state) { Log.d(TAG, "setState: " + type + " " + state); try { if (mService != null) { return mService.setState(type, state); } } catch (RemoteException e) { e.printStackTrace(); } return ""; } public String getState(int type) { Log.d(TAG, "getState: " + type); try { if (mService == null) { return null; } return mService.getState(type); } catch (RemoteException e) { e.printStackTrace(); } return "service connect failed"; } public boolean setDeviceListener(DeviceEventListener listener) { Log.d(TAG, "setDeviceListener: "); try { if (mService == null) { return false; } return mService.setDeviceEventListener(listener); } catch (RemoteException e) { e.printStackTrace(); return false; } } public void release() { Log.d(TAG, "release: "); try { if (mService != null) { mService.release(); } } catch (RemoteException e) { e.printStackTrace(); } } } 在aospframeworksbaseAndroid.mk里添加 core/java/android/os/het/IDeviceEventListener.aidl core/java/android/os/het/IHetService.aidl 4.1.2 HetService端在目录 aospframeworksbaseservicescoreAndroid.mk添加het独有类的引用 LOCAL_JAVA_LIBRARIES := ... android.hardware.het-V1.0-java ... 在目录 aospframeworksbaseservicesAndroid.mk添加het独有类的静态引用（经测试必须要加静态类，不然会报错） LOCAL_STATIC_JAVA_LIBRARIES := ... android.hardware.het-V1.0-java-static ... 在目录 aospframeworksbaseservicescorejavacomandroidserverhet 新建HetService.java package com.android.server.het; import android.content.Context; import android.hardware.het.V1_0.IHet; import android.hardware.het.V1_0.DeviceType; import android.hardware.het.V1_0.IDeviceCallback; import android.hardware.het.V1_0.DeviceEvent; import android.os.RemoteException; import android.os.het.DeviceListenerEvent; import android.os.het.IDeviceEventListener; import android.os.het.IHetService; import android.util.Log; /* * ---------------------------------------------------------------- * Copyright (C) 2014-2020, by het, Shenzhen, All rights reserved. * ---------------------------------------------------------------- * * 描述: HetService * 作者: lei * 日期: 2020/6/29 */ public class HetService extends IHetService.Stub { private String TAG = "HetService"; private final Context mContext; private IHet halService ; public HetService(Context context){ mContext = context; try { halService = IHet.getService();//获取service } catch (RemoteException e) { e.printStackTrace(); } } @Override public String setState(int type, String state) throws RemoteException { DeviceType deviceType = new DeviceType(); deviceType.type = type; deviceType.state = state; return halService.setState(deviceType); } @Override public String getState(int type) throws RemoteException { return halService.getState(type); } @Override public boolean setDeviceEventListener(IDeviceEventListener listener) throws RemoteException { Log.d(TAG, "setDeviceEventListener: "); DeviceCallback callback = new DeviceCallback(listener); return halService.setCallback(callback); } @Override public void release() throws RemoteException { Log.d(TAG, "release: "); halService.release(); } class DeviceCallback extends IDeviceCallback.Stub{ IDeviceEventListener mIDeviceEventListener; DeviceCallback (IDeviceEventListener listener){ mIDeviceEventListener = listener; } @Override public void onDeviceEvent(DeviceEvent event) throws RemoteException { Log.d(TAG, "onDeviceEvent: "); DeviceListenerEvent deviceListenerEvent = new DeviceListenerEvent(event.what,event.msg); mIDeviceEventListener.onEvent(deviceListenerEvent); } } } 在目录aospframeworksbasecorejavaandroidcontentContext.java里添加 public static final String HET_SERVICE = "het"; 在目录aospframeworksbasecorejavaandroidapp SystemServiceRegistry.java 里添加 import android.os.het.HetManager; import android.os.het.IHetService; ... registerService(Context.HET_SERVICE, HetManager.class, new CachedServiceFetcher() { @Override public HetManager createService(ContextImpl ctx) throws ServiceNotFoundException { IBinder b = ServiceManager.getServiceOrThrow(Context.HET_SERVICE); return new HetManager(ctx, IHetService.Stub.asInterface(b)); }}); ... 在目录aospframeworksbaseservicesjavacomandroidserver SystemServer.java 添加 import com.android.server.het.HetService; private void startOtherServices() { ... HetService het = null; boolean disableHet = SystemProperties.getBoolean("config.disable_het", false); ... if (!disableHet) { traceBeginAndSlog("StartHetService"); try { Slog.i(TAG, "het Service"); // het support het = new HetService(context); ServiceManager.addService(Context.HET_SERVICE, het); } catch (Throwable e) { Slog.e(TAG, "Failure starting HetService", e); } traceEnd(); } ... } 4.1.3 添加SELinux策略 public目录 service.te添加 type het_service, system_api_service, system_server_service, service_manager_type; type hal_het_service, system_api_service, system_server_service, service_manager_type; 将以上修改同步到aospsystemsepolicyprebuiltsapi26.0public private 目录 service_contexts 添加和Context 保持一致 HET_SERVICE = “het”; het u:object_r:het_service:s0 system_server.te 添加 hal_client_domain(system_server, hal_het) private/compat/26.0/26.0.ignore.cil 添加 het_service 将以上修改同步到aospsystemsepolicyprebuiltsapi26.0private 4.2 APP调用略 4.3 三方APP调用添加SELinuxc策略在aospdevicerockchipcommonsepolicyuntrusted_app.te添加 allow untrusted_app het_service:service_manager { find }; 五. 设备节点添加SELinux策略 1. common目录在aospdevicerockchipcommonsepolicyfile_contexts添加 /dev/lock_p u:object_r:ttyS_device:s0 在aospdevicerockchipcommonsepolicysystem_server.te添加 allow system_server ttyS_device:chr_file rw_file_perms; 2. public目录在aospsystemsepolicypublicdevice.te添加 type ttyS_device, dev_type, mlstrustedobject; 同步到aospsystemsepolicyprebuildapi26.0public中 3. init.rc 在aospdevicerockchiprk3288init.rk3288.rc添加 chmod 0666 /dev/lock_p chown system system /dev/lock_p

2022-2-17 14:11:04 评论举报卫斯晾