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
26 lines
1.1 KiB
Plaintext
26 lines
1.1 KiB
Plaintext
# HwBinder IPC from client to server, and callbacks
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binder_call(hal_wifi_client, hal_wifi_server)
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binder_call(hal_wifi_server, hal_wifi_client)
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add_hwservice(hal_wifi_server, hal_wifi_hwservice)
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allow hal_wifi_client hal_wifi_hwservice:hwservice_manager find;
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r_dir_file(hal_wifi, proc_net)
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r_dir_file(hal_wifi, sysfs_type)
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set_prop(hal_wifi, wifi_prop)
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# allow hal wifi set interfaces up and down
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allow hal_wifi self:udp_socket create_socket_perms;
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allowxperm hal_wifi self:udp_socket ioctl { SIOCSIFFLAGS };
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allow hal_wifi self:global_capability_class_set { net_admin net_raw };
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# allow hal_wifi to speak to nl80211 in the kernel
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allow hal_wifi self:netlink_socket create_socket_perms_no_ioctl;
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# newer kernels (e.g. 4.4 but not 4.1) have a new class for sockets
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allow hal_wifi self:netlink_generic_socket create_socket_perms_no_ioctl;
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# hal_wifi writes firmware paths to this file.
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allow hal_wifi sysfs_wlan_fwpath:file { w_file_perms };
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# allow hal_wifi to access /proc/modules to check if Wi-Fi driver is loaded
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allow hal_wifi proc_modules:file { getattr open read };
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