1###
2### Services with isolatedProcess=true in their manifest.
3###
4### This file defines the rules for isolated apps. An "isolated
5### app" is an APP with UID between AID_ISOLATED_START (99000)
6### and AID_ISOLATED_END (99999).
7###
8### isolated_app includes all the appdomain rules, plus the
9### additional following rules:
10###
11
12type isolated_app, domain, domain_deprecated;
13app_domain(isolated_app)
14
15# Access already open app data files received over Binder or local socket IPC.
16allow isolated_app app_data_file:file { read write getattr lock };
17
18allow isolated_app activity_service:service_manager find;
19allow isolated_app display_service:service_manager find;
20allow isolated_app webviewupdate_service:service_manager find;
21
22# Google Breakpad (crash reporter for Chrome) relies on ptrace
23# functionality. Without the ability to ptrace, the crash reporter
24# tool is broken.
25# b/20150694
26# https://code.google.com/p/chromium/issues/detail?id=475270
27allow isolated_app self:process ptrace;
28
29#####
30##### Neverallow
31#####
32
33# Do not allow isolated_app to directly open tun_device
34neverallow isolated_app tun_device:chr_file open;
35
36# Do not allow isolated_app to set system properties.
37neverallow isolated_app property_socket:sock_file write;
38neverallow isolated_app property_type:property_service set;
39
40# Isolated apps should not directly open app data files themselves.
41neverallow isolated_app app_data_file:file open;
42
43# Only allow appending to /data/anr/traces.txt (b/27853304, b/18340553)
44# TODO: are there situations where isolated_apps write to this file?
45# TODO: should we tighten these restrictions further?
46neverallow isolated_app anr_data_file:file ~{ open append };
47neverallow isolated_app anr_data_file:dir ~search;
48
49# b/17487348
50# Isolated apps can only access three services,
51# activity_service, display_service and webviewupdate_service.
52neverallow isolated_app {
53    service_manager_type
54    -activity_service
55    -display_service
56    -webviewupdate_service
57}:service_manager find;
58
59# Isolated apps shouldn't be able to access the driver directly.
60neverallow isolated_app gpu_device:chr_file { rw_file_perms execute };
61
62# Do not allow isolated_app access to /cache
63neverallow isolated_app cache_file:dir ~{ r_dir_perms };
64neverallow isolated_app cache_file:file ~{ read getattr };
65
66# Restrict socket ioctls. Either 1. disallow privileged ioctls, 2. disallow the
67# ioctl permission, or 3. disallow the socket class.
68neverallowxperm isolated_app domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls;
69neverallow isolated_app *:{ netlink_route_socket netlink_selinux_socket } ioctl;
70neverallow isolated_app *:{
71  socket netlink_socket packet_socket key_socket appletalk_socket
72  netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket
73  netlink_xfrm_socket netlink_audit_socket netlink_ip6fw_socket
74  netlink_dnrt_socket netlink_kobject_uevent_socket tun_socket
75  netlink_iscsi_socket netlink_fib_lookup_socket netlink_connector_socket
76  netlink_netfilter_socket netlink_generic_socket netlink_scsitransport_socket
77  netlink_rdma_socket netlink_crypto_socket
78} *;
79