aosp12/system/sepolicy/private/app.te

107 lines
4.1 KiB
Plaintext

# Allow apps to read the Test Harness Mode property. This property is used in
# the implementation of ActivityManager.isDeviceInTestHarnessMode()
get_prop(appdomain, test_harness_prop)
get_prop(appdomain, boot_status_prop)
get_prop(appdomain, dalvik_config_prop)
get_prop(appdomain, media_config_prop)
get_prop(appdomain, packagemanager_config_prop)
get_prop(appdomain, radio_control_prop)
get_prop(appdomain, surfaceflinger_color_prop)
get_prop(appdomain, systemsound_config_prop)
get_prop(appdomain, telephony_config_prop)
get_prop(appdomain, userspace_reboot_config_prop)
get_prop(appdomain, vold_config_prop)
get_prop(appdomain, adbd_config_prop)
get_prop(appdomain, dck_prop)
# Allow ART to be configurable via device_config properties
# (ART "runs" inside the app process)
get_prop(appdomain, device_config_runtime_native_prop)
get_prop(appdomain, device_config_runtime_native_boot_prop)
userdebug_or_eng(`perfetto_producer({ appdomain })')
# Prevent apps from causing presubmit failures.
# Apps can cause selinux denials by accessing CE storage
# and/or external storage. In either case, the selinux denial is
# not the cause of the failure, but just a symptom that
# storage isn't ready. Many apps handle the failure appropriately.
#
# Apps cannot access external storage before it becomes available.
dontaudit appdomain storage_stub_file:dir getattr;
# Attempts to write to system_data_file is generally a sign
# that apps are attempting to access encrypted storage before
# the ACTION_USER_UNLOCKED intent is delivered. Apps are not
# allowed to write to CE storage before it's available.
# Attempting to do so will be blocked by both selinux and unix
# permissions.
dontaudit appdomain system_data_file:dir write;
# Apps should not be reading vendor-defined properties.
dontaudit appdomain vendor_default_prop:file read;
# Access to /mnt/media_rw/<vol> (limited by DAC to apps with external_storage gid)
allow appdomain mnt_media_rw_file:dir search;
neverallow appdomain system_server:udp_socket {
accept append bind create ioctl listen lock name_bind
relabelfrom relabelto setattr shutdown };
# Transition to a non-app domain.
# Exception for the shell and su domains, can transition to runas, etc.
# Exception for crash_dump to allow for app crash reporting.
# Exception for renderscript binaries (/system/bin/bcc, /system/bin/ld.mc)
# to allow renderscript to create privileged executable files.
neverallow { appdomain -shell userdebug_or_eng(`-su') }
{ domain -appdomain -crash_dump -rs }:process { transition };
neverallow { appdomain -shell userdebug_or_eng(`-su') }
{ domain -appdomain }:process { dyntransition };
# Don't allow regular apps access to storage configuration properties.
neverallow { appdomain -mediaprovider_app } storage_config_prop:file no_rw_file_perms;
# Allow to read sendbug.preferred.domain
get_prop(appdomain, sendbug_config_prop)
# Allow to read graphics related properties.
get_prop(appdomain, graphics_config_prop)
# Allow to read persist.config.calibration_fac
get_prop(appdomain, camera_calibration_prop)
# Allow to read db.log.detailed, db.log.slow_query_threshold*
get_prop(appdomain, sqlite_log_prop)
# Allow font file read by apps.
allow appdomain font_data_file:file r_file_perms;
allow appdomain font_data_file:dir r_dir_perms;
# Enter /data/misc/apexdata/
allow appdomain apex_module_data_file:dir search;
# Read /data/misc/apexdata/com.android.art, execute signed AOT artifacts.
allow appdomain apex_art_data_file:dir r_dir_perms;
allow appdomain apex_art_data_file:file rx_file_perms;
# Allow access to tombstones if an fd to one is given to you.
# This is restricted by unix permissions, so an app must go through system_server to get one.
allow appdomain tombstone_data_file:file { getattr read };
neverallow appdomain tombstone_data_file:file ~{ getattr read };
# Sensitive app domains are not allowed to execute from /data
# to prevent persistence attacks and ensure all code is executed
# from read-only locations.
neverallow {
bluetooth
isolated_app
nfc
radio
shared_relro
system_app
} {
data_file_type
-apex_art_data_file
-dalvikcache_data_file
-system_data_file # shared libs in apks
-apk_data_file
}:file no_x_file_perms;