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/incidentd.te b/private/incidentd.te
index efd23bd..5810d9a 100644
--- a/private/incidentd.te
+++ b/private/incidentd.te
@@ -7,12 +7,12 @@
# Allow setting process priority, protect from OOM killer, and dropping
# privileges by switching UID / GID
-# TODO allow incidentd self:capability { setuid setgid sys_resource };
+# TODO allow incidentd self:global_capability_class_set { setuid setgid sys_resource };
# Allow incidentd to scan through /proc/pid for all processes
r_dir_file(incidentd, domain)
-allow incidentd self:capability {
+allow incidentd self:global_capability_class_set {
# Send signals to processes
kill
};
@@ -56,7 +56,7 @@
binder_call(incidentd, appdomain)
# Reading /proc/PID/maps of other processes
-# TODO allow incidentd self:capability sys_ptrace;
+# TODO allow incidentd self:global_capability_class_set sys_ptrace;
# Run a shell.
allow incidentd shell_exec:file rx_file_perms;