cc39f63773
Divide policy into public and private components. This is the first step in splitting the policy creation for platform and non-platform policies. The policy in the public directory will be exported for use in non-platform policy creation. Backwards compatibility with it will be achieved by converting the exported policy into attribute-based policy when included as part of the non-platform policy and a mapping file will be maintained to be included with the platform policy that maps exported attributes of previous versions to the current platform version. Eventually we would like to create a clear interface between the platform and non-platform device components so that the exported policy, and the need for attributes is minimal. For now, almost all types and avrules are left in public. Test: Tested by building policy and running on device. Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c
79 lines
3.0 KiB
Plaintext
79 lines
3.0 KiB
Plaintext
###
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### Services with isolatedProcess=true in their manifest.
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###
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### This file defines the rules for isolated apps. An "isolated
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### app" is an APP with UID between AID_ISOLATED_START (99000)
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### and AID_ISOLATED_END (99999).
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###
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### isolated_app includes all the appdomain rules, plus the
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### additional following rules:
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###
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type isolated_app, domain;
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app_domain(isolated_app)
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# Access already open app data files received over Binder or local socket IPC.
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allow isolated_app app_data_file:file { append read write getattr lock };
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allow isolated_app activity_service:service_manager find;
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allow isolated_app display_service:service_manager find;
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allow isolated_app webviewupdate_service:service_manager find;
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# Google Breakpad (crash reporter for Chrome) relies on ptrace
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# functionality. Without the ability to ptrace, the crash reporter
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# tool is broken.
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# b/20150694
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# https://code.google.com/p/chromium/issues/detail?id=475270
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allow isolated_app self:process ptrace;
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#####
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##### Neverallow
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#####
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# Do not allow isolated_app to directly open tun_device
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neverallow isolated_app tun_device:chr_file open;
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# Do not allow isolated_app to set system properties.
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neverallow isolated_app property_socket:sock_file write;
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neverallow isolated_app property_type:property_service set;
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# Isolated apps should not directly open app data files themselves.
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neverallow isolated_app app_data_file:file open;
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# Only allow appending to /data/anr/traces.txt (b/27853304, b/18340553)
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# TODO: are there situations where isolated_apps write to this file?
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# TODO: should we tighten these restrictions further?
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neverallow isolated_app anr_data_file:file ~{ open append };
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neverallow isolated_app anr_data_file:dir ~search;
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# b/17487348
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# Isolated apps can only access three services,
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# activity_service, display_service and webviewupdate_service.
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neverallow isolated_app {
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service_manager_type
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-activity_service
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-display_service
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-webviewupdate_service
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}:service_manager find;
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# Isolated apps shouldn't be able to access the driver directly.
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neverallow isolated_app gpu_device:chr_file { rw_file_perms execute };
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# Do not allow isolated_app access to /cache
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neverallow isolated_app cache_file:dir ~{ r_dir_perms };
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neverallow isolated_app cache_file:file ~{ read getattr };
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# Restrict socket ioctls. Either 1. disallow privileged ioctls, 2. disallow the
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# ioctl permission, or 3. disallow the socket class.
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neverallowxperm isolated_app domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls;
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neverallow isolated_app *:{ netlink_route_socket netlink_selinux_socket } ioctl;
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neverallow isolated_app *:{
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socket netlink_socket packet_socket key_socket appletalk_socket
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netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket
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netlink_xfrm_socket netlink_audit_socket netlink_ip6fw_socket
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netlink_dnrt_socket netlink_kobject_uevent_socket tun_socket
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netlink_iscsi_socket netlink_fib_lookup_socket netlink_connector_socket
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netlink_netfilter_socket netlink_generic_socket netlink_scsitransport_socket
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netlink_rdma_socket netlink_crypto_socket
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} *;
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