9b2e0cbeea
In kernel 4.7, the capability and capability2 classes were split apart
from cap_userns and cap2_userns (see kernel commit
8e4ff6f228e4722cac74db716e308d1da33d744f). Since then, Android cannot be
run in a container with SELinux in enforcing mode.
This change applies the existing capability rules to user namespaces as
well as the root namespace so that Android running in a container
behaves the same on pre- and post-4.7 kernels.
This is essentially:
1. New global_capability_class_set and global_capability2_class_set
that match capability+cap_userns and capability2+cap2_userns,
respectively.
2. s/self:capability/self:global_capability_class_set/g
3. s/self:capability2/self:global_capability2_class_set/g
4. Add cap_userns and cap2_userns to the existing capability_class_set
so that it covers all capabilities. This set was used by several
neverallow and dontaudit rules, and I confirmed that the new
classes are still appropriate.
Test: diff new policy against old and confirm that all new rules add
only cap_userns or cap2_userns;
Boot ARC++ on a device with the 4.12 kernel.
Bug: crbug.com/754831
Change-Id: I4007eb3a2ecd01b062c4c78d9afee71c530df95f
29 lines
1.1 KiB
Text
29 lines
1.1 KiB
Text
type wpantund, domain;
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type wpantund_exec, exec_type, file_type;
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hal_client_domain(wpantund, hal_lowpan)
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net_domain(wpantund)
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binder_use(wpantund)
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binder_call(wpantund, system_server)
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# wpantund needs to be able to check in with the lowpan_service
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allow wpantund lowpan_service:service_manager find;
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# Allow wpantund to call any callbacks that have been registered with it.
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# Generally, only privileged apps are able to register callbacks with
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# wpantund, so we are limiting the scope for callbacks to only privileged
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# apps. We also add shell to allow the command-line utility `lowpanctl`
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# to work properly from `adb shell`.
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allow wpantund {priv_app shell}:binder call;
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# create sockets to set interfaces up and down, add multicast groups, etc.
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allow wpantund self:udp_socket create_socket_perms;
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# setting interface state up/down and changing MTU are privileged ioctls
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allowxperm wpantund self:udp_socket ioctl { SIOCSIFFLAGS SIOCSIFMTU };
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# Allow us to bring up a TUN network interface.
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allow wpantund tun_device:chr_file rw_file_perms;
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allow wpantund self:global_capability_class_set { net_admin net_raw };
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allow wpantund self:tun_socket create;
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