sepolicy: Add rules for non-init namespaces
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
diff --git a/private/netutils_wrapper.te b/private/netutils_wrapper.te
index f7fe32a..9a5697e 100644
--- a/private/netutils_wrapper.te
+++ b/private/netutils_wrapper.te
@@ -3,13 +3,13 @@
r_dir_file(netutils_wrapper, system_file);
# For netutils (ip, iptables, tc)
-allow netutils_wrapper self:capability net_raw;
+allow netutils_wrapper self:global_capability_class_set net_raw;
allow netutils_wrapper system_file:file { execute execute_no_trans };
allow netutils_wrapper proc_net:file { open read getattr };
allow netutils_wrapper self:rawip_socket create_socket_perms;
allow netutils_wrapper self:udp_socket create_socket_perms;
-allow netutils_wrapper self:capability net_admin;
+allow netutils_wrapper self:global_capability_class_set net_admin;
# ip utils need everything but ioctl
allow netutils_wrapper self:netlink_route_socket ~ioctl;
allow netutils_wrapper self:netlink_xfrm_socket ~ioctl;