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
1.4 KiB
Text
29 lines
1.4 KiB
Text
# HwBinder IPC from client to server
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binder_call(hal_wifi_supplicant_client, hal_wifi_supplicant_server)
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binder_call(hal_wifi_supplicant_server, hal_wifi_supplicant_client)
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add_hwservice(hal_wifi_supplicant_server, hal_wifi_supplicant_hwservice)
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allow hal_wifi_supplicant_client hal_wifi_supplicant_hwservice:hwservice_manager find;
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# in addition to ioctls whitelisted for all domains, grant hal_wifi_supplicant priv_sock_ioctls.
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allowxperm hal_wifi_supplicant self:udp_socket ioctl priv_sock_ioctls;
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r_dir_file(hal_wifi_supplicant, sysfs_type)
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r_dir_file(hal_wifi_supplicant, proc_net)
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allow hal_wifi_supplicant kernel:system module_request;
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allow hal_wifi_supplicant self:global_capability_class_set { setuid net_admin setgid net_raw };
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allow hal_wifi_supplicant cgroup:dir create_dir_perms;
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allow hal_wifi_supplicant self:netlink_route_socket nlmsg_write;
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allow hal_wifi_supplicant self:netlink_socket create_socket_perms_no_ioctl;
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allow hal_wifi_supplicant self:netlink_generic_socket create_socket_perms_no_ioctl;
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allow hal_wifi_supplicant self:packet_socket create_socket_perms;
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allowxperm hal_wifi_supplicant self:packet_socket ioctl { unpriv_sock_ioctls priv_sock_ioctls unpriv_tty_ioctls };
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###
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### neverallow rules
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###
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# wpa_supplicant should not trust any data from sdcards
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neverallow hal_wifi_supplicant_server sdcard_type:dir ~getattr;
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neverallow hal_wifi_supplicant_server sdcard_type:file *;
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