apparmor.txt

#include <tunables/global>

profile gpsd2mqtt flags=(attach_disconnected,mediate_deleted) {
  #include <abstractions/base>

  # Capabilities
  file,
  signal (send) set=(kill,term,int,hup,cont),

  # S6-Overlay
  /init ix,
  /bin/** ix,
  /usr/bin/** ix,
  /run/{s6,s6-rc*,service}/** ix,
  /package/** ix,
  /command/** ix,
  /etc/services.d/** rwix,
  /etc/cont-init.d/** rwix,
  /etc/cont-finish.d/** rwix,
  /run/{,**} rwk,
  /dev/tty rw,

  # Bashio
  /usr/lib/bashio/** ix,
  /tmp/** rwk,

  # Access to options.json and other files within your addon
  /data/** rw,

  profile /usr/sbin/gpsd flags=(attach_disconnected,mediate_deleted) {
    #include <abstractions/base>

    # Receive signals from S6-Overlay
    signal (receive) peer=*gpsd2mqtt,

    # Access to options.json and other files within your addon
    /data/** rw,

    # Access to mapped volumes specified in config.json
    /share/** rw,

    # Allow gpsd access
    /usr/sbin/gpsd rix,

    # Access required for service functionality
    /bin/bash rix,
    /bin/echo ix,
    /etc/passwd r,

    # ------------------------------------------------------------------------------
    # common serial paths to GPS devices
    /dev/tty{,S,USB,AMA,ACM,XTRX}[0-9]*    rw,

    # default paths feeding GPS data into chrony
    /{,var/}run/chrony.tty{,S,USB,AMA,XTRX}[0-9]*.sock rw,
    /tmp/chrony.tty{,S,USB,AMA,XTRX}[0-9]*.sock rw,
    # ------------------------------------------------------------------------------

    # Allow outbound MQTT communication
    network tcp,
    network inet stream,
    network inet dgram,
    network inet6 stream,
    network inet6 dgram,

    # Allow system calls needed for gpsd
    capability setgid,
    capability setuid,

    # Add any additional MQTT-related rules if needed
    # For example, if you're using the paho-mqtt library
    /usr/bin/python3 cx -> paho.mqtt,
    /usr/lib/python3.11/site-packages/paho/mqtt/** r,
  }
}