RDK-V Emulator containers

Summary

The purpose of this section is to describe the  new implemented solution to have a secure containerized RDK build on emulator. This implementation done from the reference of

Raspberry pi platform.

The intent of this page is to be used as a walk-through to all the relevant information present in the section.

Detailed organization

The section is organized in two main subsections, as the following:

• Implementation details: here is described all the relevant developments to have containers working.
• Implemented containers: here is detailed information about each container that is already implemented.
• Building procedure.

Most of the information is present in Implementation details, that is organized as the following:

• Containers layer - meta-rdk-containers: The main container image(rdk-generic-hybrid-lxc-image) is taken from this layer. Modifications made to this image file so that it
                                                                       will be using latest "lxc-container-generator" for container generation at do_rootfs stage.
                                                                      Distro feature and lxc preferred version also updated in qemux86hybsecure.conf of this layer.
• Emulator layer - meta-rdk-bsp-emulator: This layer has been used for adding emulator specific package groups and plugins to the container image.
  
  

Container generation process:
This subsection describes how the new container generation process is replacing the earlier process. Main focus in the following topics:

• • • In this process containers will be generated using  "lxc-container-generator"  recipe which will use corresponding .xml files to generate containers. Here all dependencies(such as required binaries,libraries,script files) will be provided in each container .XML file.
    • For permissions of files we also maintain separate "add-users-groups-file-owners-and-permissions.inc" file.
    • While doing rootfs this lxc-container-generator-native component will generate containers in /container path of rootfs.
    • Each container will consists of corresponding script (.sh) file for launching that particular container.
    • Here every process will be launched from corresponding component service file. Single (or) multiple processes can be launched/attached to container.
      
      
• XML and conf files: All required XML and configuration files are placed along with lxc-container-generator recipe in meta-rdk-bsp-emulator layer.
  
  
• Service files: 
                       In platformcontrol container: As we are running three processes we need three service files for launching these processes inside container.
  
  • • • Three  services are    
        • • •    sysmgr.service
            •    irmgr.service
            •    dsmgr.service
                        In rmfstreamer container: As we are launching rmfstreamer process we need 
                                                                 rmfstreamer.service 
  
  Note: All these service files are overridden in corresponding receipe .bbappend files based on distro feature "lxc-secure-containers" . 
•                         For exmaple sysmgr.service,irmgr.service and dsmgr.service files are overridden in iarmmgrs_git.bbappend file in meta-rdk-bsp-emulator. 
•                         rmfstreamer.service file overridden in rmfstreamer_git.bbappend in meta-rdk-bsp-emulator.

Implemented containers is updated with all containers that are already implemented. Currently, the following ones are available:

• platformcontrol: runs sysmgr,irmgr and dsmgr processes;
• rmfstreamer: runs rmfstreamer;
  • Test case is to play a video using rmfstreamer: An easy way for testing the containerized rmfstreamer
    
• wpelauncher: runs wpelauncher;
              Now deprecated. So trying to replace this container with rdkbrowser2.

Building procedure:

• repo init -u https://code.rdkcentral.com/r/manifests -b rdk-next -m rdkv-asp-extsrc.xml
• repo sync --no-tags
• source meta-cmf-bsp-emulator/setup-environment
• meta-rdk-containers/conf/machine/qemux86hybsecure.conf
• bitbake rdk-generic-hybrid-lxc-image