Support forcing permissive domains to unconfined.
Permissive domains are only intended for development.
When a device launches, we want to ensure that all
permissive domains are in, at a minimum, unconfined+enforcing.
Add FORCE_PERMISSIVE_TO_UNCONFINED to Android.mk. During
development, this flag is false, and permissive domains
are allowed. When SELinux new feature development has been
frozen immediately before release, this flag will be flipped
to true. Any previously permissive domains will move into
unconfined+enforcing.
This will ensure that all SELinux domains have at least a
minimal level of protection.
Unconditionally enable this flag for all user builds.
Change-Id: I1632f0da0022c80170d8eb57c82499ac13fd7858
diff --git a/Android.mk b/Android.mk
index fa6cd78..a3463bb 100644
--- a/Android.mk
+++ b/Android.mk
@@ -2,6 +2,22 @@
include $(CLEAR_VARS)
+# Force permissive domains to be unconfined+enforcing?
+#
+# During development, this should be set to false.
+# Permissive means permissive.
+#
+# When we're close to a release and SELinux new policy development
+# is frozen, we should flip this to true. This forces any currently
+# permissive domains into unconfined+enforcing.
+#
+FORCE_PERMISSIVE_TO_UNCONFINED:=false
+
+ifeq ($(TARGET_BUILD_VARIANT),user)
+ # User builds are always forced unconfined+enforcing
+ FORCE_PERMISSIVE_TO_UNCONFINED:=true
+endif
+
# SELinux policy version.
# Must be <= /selinux/policyvers reported by the Android kernel.
# Must be within the compatibility range reported by checkpolicy -V.
@@ -69,7 +85,10 @@
$(sepolicy_policy.conf): PRIVATE_MLS_CATS := $(MLS_CATS)
$(sepolicy_policy.conf) : $(call build_policy, security_classes initial_sids access_vectors global_macros mls_macros mls policy_capabilities te_macros attributes *.te roles users initial_sid_contexts fs_use genfs_contexts port_contexts)
@mkdir -p $(dir $@)
- $(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) -D target_build_variant=$(TARGET_BUILD_VARIANT) -s $^ > $@
+ $(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) \
+ -D target_build_variant=$(TARGET_BUILD_VARIANT) \
+ -D force_permissive_to_unconfined=$(FORCE_PERMISSIVE_TO_UNCONFINED) \
+ -s $^ > $@
$(hide) sed '/dontaudit/d' $@ > $@.dontaudit
$(LOCAL_BUILT_MODULE) : $(sepolicy_policy.conf) $(HOST_OUT_EXECUTABLES)/checkpolicy