# Properties used only in /system
system_internal_prop(apexd_prop)
system_internal_prop(bootloader_boot_reason_prop)
system_internal_prop(device_config_activity_manager_native_boot_prop)
system_internal_prop(device_config_boot_count_prop)
system_internal_prop(device_config_input_native_boot_prop)
system_internal_prop(device_config_media_native_prop)
system_internal_prop(device_config_netd_native_prop)
system_internal_prop(device_config_reset_performed_prop)
system_internal_prop(device_config_runtime_native_boot_prop)
system_internal_prop(device_config_runtime_native_prop)
system_internal_prop(device_config_storage_native_boot_prop)
system_internal_prop(device_config_sys_traced_prop)
system_internal_prop(device_config_window_manager_native_boot_prop)
system_internal_prop(firstboot_prop)
system_internal_prop(gsid_prop)
system_internal_prop(init_perf_lsm_hooks_prop)
system_internal_prop(init_svc_debug_prop)
system_internal_prop(last_boot_reason_prop)
system_internal_prop(netd_stable_secret_prop)
system_internal_prop(pm_prop)
system_internal_prop(userspace_reboot_log_prop)
system_internal_prop(system_adbd_prop)
system_internal_prop(adbd_prop)
system_internal_prop(traced_perf_enabled_prop)

compatible_property_only(`
    # DO NOT ADD ANY PROPERTIES HERE
    system_internal_prop(boottime_prop)
    system_internal_prop(bpf_progs_loaded_prop)
    system_internal_prop(charger_prop)
    system_internal_prop(cold_boot_done_prop)
    system_internal_prop(ctl_adbd_prop)
    system_internal_prop(ctl_apexd_prop)
    system_internal_prop(ctl_bootanim_prop)
    system_internal_prop(ctl_bugreport_prop)
    system_internal_prop(ctl_console_prop)
    system_internal_prop(ctl_dumpstate_prop)
    system_internal_prop(ctl_fuse_prop)
    system_internal_prop(ctl_gsid_prop)
    system_internal_prop(ctl_interface_restart_prop)
    system_internal_prop(ctl_interface_stop_prop)
    system_internal_prop(ctl_mdnsd_prop)
    system_internal_prop(ctl_restart_prop)
    system_internal_prop(ctl_rildaemon_prop)
    system_internal_prop(ctl_sigstop_prop)
    system_internal_prop(dynamic_system_prop)
    system_internal_prop(heapprofd_enabled_prop)
    system_internal_prop(llkd_prop)
    system_internal_prop(lpdumpd_prop)
    system_internal_prop(mmc_prop)
    system_internal_prop(mock_ota_prop)
    system_internal_prop(net_dns_prop)
    system_internal_prop(overlay_prop)
    system_internal_prop(persistent_properties_ready_prop)
    system_internal_prop(safemode_prop)
    system_internal_prop(system_lmk_prop)
    system_internal_prop(system_trace_prop)
    system_internal_prop(test_boot_reason_prop)
    system_internal_prop(time_prop)
    system_internal_prop(traced_enabled_prop)
    system_internal_prop(traced_lazy_prop)
')

# Properties which can't be written outside system

# Properties used by binder caches
system_restricted_prop(binder_cache_bluetooth_server_prop)
system_restricted_prop(binder_cache_system_server_prop)
system_restricted_prop(binder_cache_telephony_server_prop)
system_restricted_prop(bq_config_prop)
system_restricted_prop(module_sdkextensions_prop)
system_restricted_prop(nnapi_ext_deny_product_prop)
system_restricted_prop(restorecon_prop)
system_restricted_prop(socket_hook_prop)
system_restricted_prop(system_boot_reason_prop)
system_restricted_prop(system_jvmti_agent_prop)
system_restricted_prop(userspace_reboot_exported_prop)

compatible_property_only(`
    # DO NOT ADD ANY PROPERTIES HERE
    system_restricted_prop(config_prop)
    system_restricted_prop(cppreopt_prop)
    system_restricted_prop(dalvik_prop)
    system_restricted_prop(debuggerd_prop)
    system_restricted_prop(default_prop)
    system_restricted_prop(device_logging_prop)
    system_restricted_prop(dhcp_prop)
    system_restricted_prop(dumpstate_prop)
    system_restricted_prop(exported2_default_prop)
    system_restricted_prop(exported3_system_prop)
    system_restricted_prop(exported_dumpstate_prop)
    system_restricted_prop(exported_fingerprint_prop)
    system_restricted_prop(exported_secure_prop)
    system_restricted_prop(exported_vold_prop)
    system_restricted_prop(ffs_prop)
    system_restricted_prop(fingerprint_prop)
    system_restricted_prop(heapprofd_prop)
    system_restricted_prop(net_radio_prop)
    system_restricted_prop(pan_result_prop)
    system_restricted_prop(persist_debug_prop)
    system_restricted_prop(shell_prop)
    system_restricted_prop(system_radio_prop)
    system_restricted_prop(test_harness_prop)
    system_restricted_prop(theme_prop)
    system_restricted_prop(use_memfd_prop)
    system_restricted_prop(vold_prop)
')

# Properties which can be written only by vendor_init
system_vendor_config_prop(apk_verity_prop)
system_vendor_config_prop(cpu_variant_prop)
system_vendor_config_prop(exported_audio_prop)
system_vendor_config_prop(exported_camera_prop)
system_vendor_config_prop(exported_config_prop)
system_vendor_config_prop(exported_default_prop)
system_vendor_config_prop(exported3_default_prop)
system_vendor_config_prop(userspace_reboot_config_prop)
system_vendor_config_prop(vehicle_hal_prop)
system_vendor_config_prop(vendor_security_patch_level_prop)
system_vendor_config_prop(vendor_socket_hook_prop)
system_vendor_config_prop(vndk_prop)
system_vendor_config_prop(virtual_ab_prop)

# Properties with no restrictions
system_public_prop(audio_prop)
system_public_prop(bluetooth_a2dp_offload_prop)
system_public_prop(bluetooth_audio_hal_prop)
system_public_prop(bluetooth_prop)
system_public_prop(ctl_default_prop)
system_public_prop(ctl_interface_start_prop)
system_public_prop(ctl_start_prop)
system_public_prop(ctl_stop_prop)
system_public_prop(debug_prop)
system_public_prop(dumpstate_options_prop)
system_public_prop(exported_system_prop)
system_public_prop(exported2_config_prop)
system_public_prop(exported2_radio_prop)
system_public_prop(exported2_system_prop)
system_public_prop(exported2_vold_prop)
system_public_prop(exported3_radio_prop)
system_public_prop(exported_bluetooth_prop)
system_public_prop(exported_dalvik_prop)
system_public_prop(exported_ffs_prop)
system_public_prop(exported_overlay_prop)
system_public_prop(exported_pm_prop)
system_public_prop(exported_radio_prop)
system_public_prop(exported_system_radio_prop)
system_public_prop(exported_wifi_prop)
system_public_prop(sota_prop)
system_public_prop(hwservicemanager_prop)
system_public_prop(logd_prop)
system_public_prop(logpersistd_logging_prop)
system_public_prop(log_prop)
system_public_prop(log_tag_prop)
system_public_prop(lowpan_prop)
system_public_prop(nfc_prop)
system_public_prop(ota_prop)
system_public_prop(powerctl_prop)
system_public_prop(radio_prop)
system_public_prop(serialno_prop)
system_public_prop(system_prop)
system_public_prop(wifi_log_prop)
system_public_prop(wifi_prop)

# Properties used in default HAL implementations
vendor_internal_prop(rebootescrow_hal_prop)

# Properties which are public for devices launching with Android O or earlier
# This should not be used for any new properties.
not_compatible_property(`
    # DO NOT ADD ANY PROPERTIES HERE
    system_public_prop(boottime_prop)
    system_public_prop(bpf_progs_loaded_prop)
    system_public_prop(charger_prop)
    system_public_prop(cold_boot_done_prop)
    system_public_prop(ctl_adbd_prop)
    system_public_prop(ctl_apexd_prop)
    system_public_prop(ctl_bootanim_prop)
    system_public_prop(ctl_bugreport_prop)
    system_public_prop(ctl_console_prop)
    system_public_prop(ctl_dumpstate_prop)
    system_public_prop(ctl_fuse_prop)
    system_public_prop(ctl_gsid_prop)
    system_public_prop(ctl_interface_restart_prop)
    system_public_prop(ctl_interface_stop_prop)
    system_public_prop(ctl_mdnsd_prop)
    system_public_prop(ctl_restart_prop)
    system_public_prop(ctl_rildaemon_prop)
    system_public_prop(ctl_sigstop_prop)
    system_public_prop(dynamic_system_prop)
    system_public_prop(heapprofd_enabled_prop)
    system_public_prop(llkd_prop)
    system_public_prop(lpdumpd_prop)
    system_public_prop(mmc_prop)
    system_public_prop(mock_ota_prop)
    system_public_prop(net_dns_prop)
    system_public_prop(overlay_prop)
    system_public_prop(persistent_properties_ready_prop)
    system_public_prop(safemode_prop)
    system_public_prop(system_lmk_prop)
    system_public_prop(system_trace_prop)
    system_public_prop(test_boot_reason_prop)
    system_public_prop(time_prop)
    system_public_prop(traced_enabled_prop)
    system_public_prop(traced_lazy_prop)

    system_public_prop(config_prop)
    system_public_prop(cppreopt_prop)
    system_public_prop(dalvik_prop)
    system_public_prop(debuggerd_prop)
    system_public_prop(default_prop)
    system_public_prop(device_logging_prop)
    system_public_prop(dhcp_prop)
    system_public_prop(dumpstate_prop)
    system_public_prop(exported2_default_prop)
    system_public_prop(exported3_system_prop)
    system_public_prop(exported_dumpstate_prop)
    system_public_prop(exported_fingerprint_prop)
    system_public_prop(exported_secure_prop)
    system_public_prop(exported_vold_prop)
    system_public_prop(ffs_prop)
    system_public_prop(fingerprint_prop)
    system_public_prop(heapprofd_prop)
    system_public_prop(net_radio_prop)
    system_public_prop(pan_result_prop)
    system_public_prop(persist_debug_prop)
    system_public_prop(shell_prop)
    system_public_prop(system_radio_prop)
    system_public_prop(test_harness_prop)
    system_public_prop(theme_prop)
    system_public_prop(use_memfd_prop)
    system_public_prop(vold_prop)
')

type vendor_default_prop, property_type;

typeattribute log_prop log_property_type;
typeattribute log_tag_prop log_property_type;
typeattribute wifi_log_prop log_property_type;

allow property_type tmpfs:filesystem associate;

###
### Neverallow rules
###

treble_sysprop_neverallow(`

# TODO(b/131162102): uncomment these after assigning ownership attributes to all properties
# neverallow domain {
#   property_type
#   -system_property_type
#   -product_property_type
#   -vendor_property_type
# }:file no_rw_file_perms;

neverallow { domain -coredomain } {
  system_property_type
  system_internal_property_type
  -system_restricted_property_type
  -system_public_property_type
}:file no_rw_file_perms;

neverallow { domain -coredomain } {
  system_property_type
  -system_public_property_type
}:property_service set;

# init is in coredomain, but should be able to read/write all props.
# dumpstate is also in coredomain, but should be able to read all props.
neverallow { coredomain -init -dumpstate } {
  vendor_property_type
  vendor_internal_property_type
  -vendor_restricted_property_type
  -vendor_public_property_type
}:file no_rw_file_perms;

neverallow { coredomain -init } {
  vendor_property_type
  -vendor_public_property_type
}:property_service set;

')

# There is no need to perform ioctl or advisory locking operations on
# property files. If this neverallow is being triggered, it is
# likely that the policy is using r_file_perms directly instead of
# the get_prop() macro.
neverallow domain property_type:file { ioctl lock };

# core_property_type should not be used for new properties or
# device specific properties. Properties with this attribute
# are readable to everyone, which is overly broad and should
# be avoided.
# New properties should have appropriate read / write access
# control rules written.

typeattribute audio_prop         core_property_type;
typeattribute config_prop        core_property_type;
typeattribute cppreopt_prop      core_property_type;
typeattribute dalvik_prop        core_property_type;
typeattribute debuggerd_prop     core_property_type;
typeattribute debug_prop         core_property_type;
typeattribute default_prop       core_property_type;
typeattribute dhcp_prop          core_property_type;
typeattribute dumpstate_prop     core_property_type;
typeattribute ffs_prop           core_property_type;
typeattribute fingerprint_prop   core_property_type;
typeattribute logd_prop          core_property_type;
typeattribute net_radio_prop     core_property_type;
typeattribute nfc_prop           core_property_type;
typeattribute ota_prop           core_property_type;
typeattribute pan_result_prop    core_property_type;
typeattribute persist_debug_prop core_property_type;
typeattribute powerctl_prop      core_property_type;
typeattribute radio_prop         core_property_type;
typeattribute restorecon_prop    core_property_type;
typeattribute shell_prop         core_property_type;
typeattribute system_prop        core_property_type;
typeattribute system_radio_prop  core_property_type;
typeattribute vold_prop          core_property_type;

neverallow * {
  core_property_type
  -audio_prop
  -config_prop
  -cppreopt_prop
  -dalvik_prop
  -debuggerd_prop
  -debug_prop
  -default_prop
  -dhcp_prop
  -dumpstate_prop
  -ffs_prop
  -fingerprint_prop
  -logd_prop
  -net_radio_prop
  -nfc_prop
  -ota_prop
  -pan_result_prop
  -persist_debug_prop
  -powerctl_prop
  -radio_prop
  -restorecon_prop
  -shell_prop
  -system_prop
  -system_radio_prop
  -vold_prop
}:file no_rw_file_perms;

# sigstop property is only used for debugging; should only be set by su which is permissive
# for userdebug/eng
neverallow {
  domain
  -init
  -vendor_init
} ctl_sigstop_prop:property_service set;

# Don't audit legacy ctl. property handling.  We only want the newer permission check to appear
# in the audit log
dontaudit domain {
  ctl_bootanim_prop
  ctl_bugreport_prop
  ctl_console_prop
  ctl_default_prop
  ctl_dumpstate_prop
  ctl_fuse_prop
  ctl_mdnsd_prop
  ctl_rildaemon_prop
}:property_service set;

neverallow {
  domain
  -init
} init_svc_debug_prop:property_service set;

neverallow {
  domain
  -init
  -dumpstate
  userdebug_or_eng(`-su')
} init_svc_debug_prop:file no_rw_file_perms;

compatible_property_only(`
# Prevent properties from being set
  neverallow {
    domain
    -coredomain
    -appdomain
    -vendor_init
  } {
    core_property_type
    extended_core_property_type
    exported_config_prop
    exported_dalvik_prop
    exported_default_prop
    exported_dumpstate_prop
    exported_ffs_prop
    exported_fingerprint_prop
    exported_system_prop
    exported_system_radio_prop
    exported_vold_prop
    exported2_config_prop
    exported2_default_prop
    exported2_system_prop
    exported2_vold_prop
    exported3_default_prop
    exported3_system_prop
    -nfc_prop
    -powerctl_prop
    -radio_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -appdomain
    -hal_nfc_server
  } {
    nfc_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -appdomain
    -hal_telephony_server
    -vendor_init
  } {
    exported_radio_prop
    exported3_radio_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -appdomain
    -hal_telephony_server
  } {
    exported2_radio_prop
    radio_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -bluetooth
    -hal_bluetooth_server
  } {
    bluetooth_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -bluetooth
    -hal_bluetooth_server
    -vendor_init
  } {
    exported_bluetooth_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -hal_camera_server
    -cameraserver
    -vendor_init
  } {
    exported_camera_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -hal_wifi_server
    -wificond
  } {
    wifi_prop
  }:property_service set;

  neverallow {
    domain
    -coredomain
    -hal_wifi_server
    -wificond
    -vendor_init
  } {
    exported_wifi_prop
  }:property_service set;

# Prevent properties from being read
  neverallow {
    domain
    -coredomain
    -appdomain
    -vendor_init
  } {
    core_property_type
    extended_core_property_type
    exported_dalvik_prop
    exported_ffs_prop
    exported_system_radio_prop
    exported2_config_prop
    exported2_system_prop
    exported2_vold_prop
    exported3_default_prop
    exported3_system_prop
    -debug_prop
    -logd_prop
    -nfc_prop
    -powerctl_prop
    -radio_prop
  }:file no_rw_file_perms;

  neverallow {
    domain
    -coredomain
    -appdomain
    -hal_nfc_server
  } {
    nfc_prop
  }:file no_rw_file_perms;

  neverallow {
    domain
    -coredomain
    -appdomain
    -hal_telephony_server
  } {
    radio_prop
  }:file no_rw_file_perms;

  neverallow {
    domain
    -coredomain
    -bluetooth
    -hal_bluetooth_server
  } {
    bluetooth_prop
  }:file no_rw_file_perms;

  neverallow {
    domain
    -coredomain
    -hal_wifi_server
    -wificond
  } {
    wifi_prop
  }:file no_rw_file_perms;
')

compatible_property_only(`
  # Neverallow coredomain to set vendor properties
  neverallow {
    coredomain
    -init
    -system_writes_vendor_properties_violators
  } {
    property_type
    -system_property_type
    -extended_core_property_type
  }:property_service set;
')

neverallow {
  -init
  -system_server
} {
  userspace_reboot_log_prop
}:property_service set;

neverallow {
  # Only allow init and system_server to set system_adbd_prop
  -init
  -system_server
} {
  system_adbd_prop
}:property_service set;

neverallow {
  # Only allow init and adbd to set adbd_prop
  -init
  -adbd
} {
  adbd_prop
}:property_service set;