Move MTE mode settings to a product variable.

Allow product configuration of memtag target list by
moving the current set into a product variable instead of the various
.bp files.

The default list of memtag targets can be found in
  build/make/target/product/memtag-common.mk

This is NFC as all targets in the list already have "memtag_heap: true"
in the build files.

Bug: 280343521
Test: no functional change
Merged-In: I5954fde05256e00a8e01c114ad522f50ed0cfa9f
Change-Id: I5954fde05256e00a8e01c114ad522f50ed0cfa9f

core/config_sanitizers.mk

@@ -140,6 +140,10 @@ ifeq ($(filter memtag_heap, $(my_sanitize)),)
                                     $(PRODUCT_MEMTAG_HEAP_ASYNC_INCLUDE_PATHS)
     combined_exclude_paths := $(MEMTAG_HEAP_EXCLUDE_PATHS) \
                               $(PRODUCT_MEMTAG_HEAP_EXCLUDE_PATHS)
+    ifneq ($(PRODUCT_MEMTAG_HEAP_SKIP_DEFAULT_PATHS),true)
+      combined_sync_include_paths += $(PRODUCT_MEMTAG_HEAP_SYNC_DEFAULT_INCLUDE_PATHS)
+      combined_async_include_paths += $(PRODUCT_MEMTAG_HEAP_ASYNC_DEFAULT_INCLUDE_PATHS)
+    endif
 
     ifeq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_exclude_paths)),\
           $(filter $(dir)%,$(LOCAL_PATH)))),)

core/product.mk

@@ -247,6 +247,16 @@ _product_list_vars += PRODUCT_CFI_EXCLUDE_PATHS
 # Whether any paths should have HWASan enabled for components
 _product_list_vars += PRODUCT_HWASAN_INCLUDE_PATHS
 
+# Whether any paths should have Memtag_heap enabled for components
+_product_list_vars += PRODUCT_MEMTAG_HEAP_ASYNC_INCLUDE_PATHS
+_product_list_vars += PRODUCT_MEMTAG_HEAP_ASYNC_DEFAULT_INCLUDE_PATHS
+_product_list_vars += PRODUCT_MEMTAG_HEAP_SYNC_INCLUDE_PATHS
+_product_list_vars += PRODUCT_MEMTAG_HEAP_SYNC_DEFAULT_INCLUDE_PATHS
+_product_list_vars += PRODUCT_MEMTAG_HEAP_EXCLUDE_PATHS
+
+# Whether this product wants to start with an empty list of default memtag_heap include paths
+_product_single_value_vars += PRODUCT_MEMTAG_HEAP_SKIP_DEFAULT_PATHS
+
 # Whether the Scudo hardened allocator is disabled platform-wide
 _product_single_value_vars += PRODUCT_DISABLE_SCUDO
 

core/soong_config.mk

@@ -123,8 +123,8 @@ $(call add_json_list, IntegerOverflowExcludePaths,       $(INTEGER_OVERFLOW_EXCL
 $(call add_json_list, HWASanIncludePaths,                $(HWASAN_INCLUDE_PATHS) $(PRODUCT_HWASAN_INCLUDE_PATHS))
 
 $(call add_json_list, MemtagHeapExcludePaths,            $(MEMTAG_HEAP_EXCLUDE_PATHS) $(PRODUCT_MEMTAG_HEAP_EXCLUDE_PATHS))
-$(call add_json_list, MemtagHeapAsyncIncludePaths,       $(MEMTAG_HEAP_ASYNC_INCLUDE_PATHS) $(PRODUCT_MEMTAG_HEAP_ASYNC_INCLUDE_PATHS))
+$(call add_json_list, MemtagHeapAsyncIncludePaths,       $(MEMTAG_HEAP_ASYNC_INCLUDE_PATHS) $(PRODUCT_MEMTAG_HEAP_ASYNC_INCLUDE_PATHS) $(if $(filter true,$(PRODUCT_MEMTAG_HEAP_SKIP_DEFAULT_PATHS)),,$(PRODUCT_MEMTAG_HEAP_ASYNC_DEFAULT_INCLUDE_PATHS)))
-$(call add_json_list, MemtagHeapSyncIncludePaths,        $(MEMTAG_HEAP_SYNC_INCLUDE_PATHS) $(PRODUCT_MEMTAG_HEAP_SYNC_INCLUDE_PATHS))
+$(call add_json_list, MemtagHeapSyncIncludePaths,       $(MEMTAG_HEAP_SYNC_INCLUDE_PATHS) $(PRODUCT_MEMTAG_HEAP_SYNC_INCLUDE_PATHS) $(if $(filter true,$(PRODUCT_MEMTAG_HEAP_SKIP_DEFAULT_PATHS)),,$(PRODUCT_MEMTAG_HEAP_SYNC_DEFAULT_INCLUDE_PATHS)))
 
 $(call add_json_bool, DisableScudo,                      $(filter true,$(PRODUCT_DISABLE_SCUDO)))
 

target/product/media_system.mk

@@ -76,3 +76,7 @@ PRODUCT_VENDOR_PROPERTIES += \
 # Enable CFI for security-sensitive components
 $(call inherit-product, $(SRC_TARGET_DIR)/product/cfi-common.mk)
 $(call inherit-product-if-exists, vendor/google/products/cfi-vendor.mk)
+
+# Enable MTE for security-sensitive components
+$(call inherit-product, $(SRC_TARGET_DIR)/product/memtag-common.mk)
+$(call inherit-product-if-exists, vendor/google/products/memtag-vendor.mk)

target/product/memtag-common.mk

@@ -0,0 +1,30 @@
+# Copyright (C) 2023 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is a recommended set of common components to enable MTE for.
+
+PRODUCT_MEMTAG_HEAP_ASYNC_DEFAULT_INCLUDE_PATHS := \
+    external/android-clat \
+    external/iproute2 \
+    external/iptables \
+    external/mtpd \
+    external/ppp \
+    hardware/st/nfc \
+    hardware/st/secure_element \
+    hardware/st/secure_element2 \
+    packages/modules/StatsD \
+    system/bpf \
+    system/netd/netutil_wrappers \
+    system/netd/server

target/product/module_common.mk

@@ -17,6 +17,7 @@
 $(call inherit-product, $(SRC_TARGET_DIR)/product/default_art_config.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/languages_default.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/cfi-common.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/memtag-common.mk)
 
 # Enables treble, which enabled certain -D compilation flags. In particular, libhidlbase
 # uses -DENFORCE_VINTF_MANIFEST. See b/185759877