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# 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(device_config_configuration_prop)
system_internal_prop(firstboot_prop)
system_internal_prop(fastbootd_protocol_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(userspace_reboot_test_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(boottime_public_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(surfaceflinger_display_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(graphics_config_prop)
system_vendor_config_prop(incremental_prop)
system_vendor_config_prop(media_variant_prop)
system_vendor_config_prop(storage_config_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(lmkd_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;
neverallow {
# Only allow init and shell to set userspace_reboot_test_prop
-init
-shell
} {
userspace_reboot_test_prop
}:property_service set;
neverallow {
-init
-vendor_init
} {
graphics_config_prop
}:property_service set;
neverallow {
-init
-surfaceflinger
} {
surfaceflinger_display_prop
}:property_service set;