一、修改文件：/build/make/core/main.mk

user_variant := $(filter user userdebug,$(TARGET_BUILD_VARIANT))
enable_target_debugging := true
tags_to_install :=
ifneq (,$(user_variant))# Target is secure in user builds.ADDITIONAL_DEFAULT_PROPERTIES += ro.secure=0ADDITIONAL_DEFAULT_PROPERTIES += security.perf_harden=1ifeq ($(user_variant),user)SADDITIONAL_DEFAULT_PROPERTIES += ro.adb.secure=0endifSSifeq ($(user_variant),userdebug)# Pick up some extra useful toolstags_to_install += debugelse# Disable debugging in plain user builds.enable_target_debugging :=endif

二、修改文件：/system/core/fs_mgr/Android.bp

cc_library_static {
    n