### ### A domain for further sandboxing the PrebuiltGMSCore app. ### typeattribute gmscore_app coredomain; app_domain(gmscore_app) allow gmscore_app sysfs_type:dir search; # Read access to /sys/block/zram*/mm_stat r_dir_file(gmscore_app, sysfs_zram) r_dir_file(gmscore_app, rootfs) # Allow GMS core to open kernel config for OTA matching through libvintf allow gmscore_app config_gz:file { open read getattr }; # Allow GMS core to communicate with update_engine for A/B update. binder_call(gmscore_app, update_engine) allow gmscore_app update_engine_service:service_manager find; # Allow GMS core to communicate with dumpsys storaged. binder_call(gmscore_app, storaged) allow gmscore_app storaged_service:service_manager find; # Allow GMS core to access system_update_service (e.g. to publish pending # system update info). allow gmscore_app system_update_service:service_manager find; # Allow GMS core to communicate with statsd. binder_call(gmscore_app, statsd) # Allow GMS core to receive Perfetto traces through the framework # (i.e. TracingServiceProxy) and sendfile them into its private directory # for reporting when network and battery conditions are appropriate. allow gmscore_app perfetto:fd use; allow gmscore_app perfetto_traces_data_file:file { read getattr }; # Allow GMS core to generate unique hardware IDs allow gmscore_app keystore:keystore_key gen_unique_id; allow gmscore_app keystore:keystore2_key gen_unique_id; # Allow GMS core to access /sys/fs/selinux/policyvers for compatibility check allow gmscore_app selinuxfs:file r_file_perms; # suppress denials for non-API accesses. dontaudit gmscore_app exec_type:file r_file_perms; dontaudit gmscore_app device:dir r_dir_perms; dontaudit gmscore_app fs_bpf:dir r_dir_perms; dontaudit gmscore_app net_dns_prop:file r_file_perms; dontaudit gmscore_app proc:file r_file_perms; dontaudit gmscore_app proc_interrupts:file r_file_perms; dontaudit gmscore_app proc_modules:file r_file_perms; dontaudit gmscore_app proc_net:file r_file_perms; dontaudit gmscore_app proc_stat:file r_file_perms; dontaudit gmscore_app proc_version:file r_file_perms; dontaudit gmscore_app sysfs:dir r_dir_perms; dontaudit gmscore_app sysfs:file r_file_perms; dontaudit gmscore_app sysfs_android_usb:file r_file_perms; dontaudit gmscore_app sysfs_dm:file r_file_perms; dontaudit gmscore_app sysfs_loop:file r_file_perms; dontaudit gmscore_app sysfs_net:file r_file_perms; dontaudit gmscore_app sysfs_net:dir r_dir_perms; dontaudit gmscore_app { wifi_prop wifi_hal_prop }:file r_file_perms; dontaudit gmscore_app mirror_data_file:dir search; dontaudit gmscore_app mnt_vendor_file:dir search; # Access the network net_domain(gmscore_app) # webview crash handling depends on self ptrace (b/27697529, b/20150694, b/19277529#comment7) allow gmscore_app self:process ptrace; # Allow loading executable code from writable priv-app home # directories. This is a W^X violation, however, it needs # to be supported for now for the following reasons. # * /data/user_*/0/*/code_cache/* POSSIBLE uses (b/117841367) # 1) com.android.opengl.shaders_cache # 2) com.android.skia.shaders_cache # 3) com.android.renderscript.cache # * /data/user_de/0/com.google.android.gms/app_chimera # TODO: Tighten (b/112357170) allow gmscore_app privapp_data_file:file execute; # Chrome Crashpad uses the the dynamic linker to load native executables # from an APK (b/112050209, crbug.com/928422) allow gmscore_app system_linker_exec:file execute_no_trans; allow gmscore_app privapp_data_file:lnk_file create_file_perms; # /proc access allow gmscore_app proc_vmstat:file r_file_perms; # Allow interaction with gpuservice binder_call(gmscore_app, gpuservice) allow gmscore_app gpu_service:service_manager find; # find services that expose both @SystemAPI and normal APIs. allow gmscore_app app_api_service:service_manager find; allow gmscore_app system_api_service:service_manager find; allow gmscore_app audioserver_service:service_manager find; allow gmscore_app cameraserver_service:service_manager find; allow gmscore_app drmserver_service:service_manager find; allow gmscore_app mediadrmserver_service:service_manager find; allow gmscore_app mediaextractor_service:service_manager find; allow gmscore_app mediametrics_service:service_manager find; allow gmscore_app mediaserver_service:service_manager find; allow gmscore_app network_watchlist_service:service_manager find; allow gmscore_app nfc_service:service_manager find; allow gmscore_app oem_lock_service:service_manager find; allow gmscore_app persistent_data_block_service:service_manager find; allow gmscore_app radio_service:service_manager find; allow gmscore_app recovery_service:service_manager find; allow gmscore_app stats_service:service_manager find; # Used by Finsky / Android "Verify Apps" functionality when # running "adb install foo.apk". allow gmscore_app shell_data_file:file r_file_perms; allow gmscore_app shell_data_file:dir r_dir_perms; # Write to /cache. allow gmscore_app { cache_file cache_recovery_file }:dir create_dir_perms; allow gmscore_app { cache_file cache_recovery_file }:file create_file_perms; # /cache is a symlink to /data/cache on some devices. Allow reading the link. allow gmscore_app cache_file:lnk_file r_file_perms; # Write to /data/ota_package for OTA packages. allow gmscore_app ota_package_file:dir create_dir_perms; allow gmscore_app ota_package_file:file create_file_perms; # Write the checkin metadata to /data/misc_ce//checkin allow gmscore_app checkin_data_file:dir rw_dir_perms; allow gmscore_app checkin_data_file:file create_file_perms; # Used by Finsky / Android "Verify Apps" functionality when # running "adb install foo.apk". allow gmscore_app shell_data_file:file r_file_perms; allow gmscore_app shell_data_file:dir r_dir_perms; # b/18504118: Allow reads from /data/anr/traces.txt allow gmscore_app anr_data_file:file r_file_perms; # b/148974132: com.android.vending needs this allow gmscore_app priv_app:tcp_socket { read write }; # b/168059475 Allow GMSCore to read Virtual AB properties to determine # if device supports VAB. get_prop(gmscore_app, virtual_ab_prop) # b/186488185: Allow GMSCore to read dck properties get_prop(gmscore_app, dck_prop) # Allow GMSCore to read RKP properties for the purpose of GTS testing. get_prop(gmscore_app, remote_prov_prop) # Do not allow getting permission-protected network information from sysfs. neverallow gmscore_app sysfs_net:file *; # Restrict socket ioctls. Either 1. disallow privileged ioctls, 2. disallow the # ioctl permission, or 3. disallow the socket class. neverallowxperm gmscore_app domain:{ icmp_socket rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls; neverallow gmscore_app *:{ netlink_route_socket netlink_selinux_socket } ioctl; neverallow gmscore_app *:{ socket netlink_socket packet_socket key_socket appletalk_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_audit_socket netlink_dnrt_socket netlink_kobject_uevent_socket tun_socket netlink_iscsi_socket netlink_fib_lookup_socket netlink_connector_socket netlink_netfilter_socket netlink_generic_socket netlink_scsitransport_socket netlink_rdma_socket netlink_crypto_socket sctp_socket ax25_socket ipx_socket netrom_socket atmpvc_socket x25_socket rose_socket decnet_socket atmsvc_socket rds_socket irda_socket pppox_socket llc_socket can_socket tipc_socket bluetooth_socket iucv_socket rxrpc_socket isdn_socket phonet_socket ieee802154_socket caif_socket alg_socket nfc_socket kcm_socket qipcrtr_socket smc_socket xdp_socket } *;