android_system_sepolicy/private/platform_app.te

###
### Apps signed with the platform key.
###

typeattribute platform_app coredomain;

app_domain(platform_app)

# Access the network.
net_domain(platform_app)
# Access bluetooth.
bluetooth_domain(platform_app)
# Read from /data/local/tmp or /data/data/com.android.shell.
allow platform_app shell_data_file:dir search;
allow platform_app shell_data_file:file { open getattr read };
allow platform_app icon_file:file { open getattr read };
# Populate /data/app/vmdl*.tmp, /data/app-private/vmdl*.tmp files
# created by system server.
allow platform_app { apk_tmp_file apk_private_tmp_file }:dir rw_dir_perms;
allow platform_app { apk_tmp_file apk_private_tmp_file }:file rw_file_perms;
allow platform_app apk_private_data_file:dir search;
# ASEC
allow platform_app asec_apk_file:dir create_dir_perms;
allow platform_app asec_apk_file:file create_file_perms;

# Access to /data/media.
allow platform_app media_rw_data_file:dir create_dir_perms;
allow platform_app media_rw_data_file:file create_file_perms;

# Write to /cache.
allow platform_app cache_file:dir create_dir_perms;
allow platform_app cache_file:file create_file_perms;

# Direct access to vold-mounted storage under /mnt/media_rw
# This is a performance optimization that allows platform apps to bypass the FUSE layer
allow platform_app mnt_media_rw_file:dir r_dir_perms;
allow platform_app vfat:dir create_dir_perms;
allow platform_app vfat:file create_file_perms;

# com.android.systemui
allow platform_app rootfs:dir getattr;

# com.android.captiveportallogin reads /proc/vmstat
allow platform_app proc:file r_file_perms;

allow platform_app audioserver_service:service_manager find;
allow platform_app cameraserver_service:service_manager find;
allow platform_app drmserver_service:service_manager find;
allow platform_app mediaserver_service:service_manager find;
allow platform_app mediametrics_service:service_manager find;
allow platform_app mediaextractor_service:service_manager find;
allow platform_app mediacodec_service:service_manager find;
allow platform_app mediadrmserver_service:service_manager find;
allow platform_app persistent_data_block_service:service_manager find;
allow platform_app radio_service:service_manager find;
allow platform_app thermal_service:service_manager find;
allow platform_app timezone_service:service_manager find;
allow platform_app app_api_service:service_manager find;
allow platform_app system_api_service:service_manager find;
allow platform_app vr_manager_service:service_manager find;

# Access to /data/preloads
allow platform_app preloads_data_file:file r_file_perms;
allow platform_app preloads_data_file:dir r_dir_perms;
allow platform_app preloads_media_file:file r_file_perms;
allow platform_app preloads_media_file:dir r_dir_perms;

read_runtime_log_tags(platform_app)

# allow platform apps to use UDP sockets provided by the system server but not
# modify them other than to connect
allow platform_app system_server:udp_socket { connect getattr read recvfrom sendto write };

###
### Neverallow rules
###

# app domains which access /dev/fuse should not run as platform_app
neverallow platform_app fuse_device:chr_file *;