Magisk/native/jni/Android.mk
topjohnwu 810d27a618 Use /data as tmpfs mount point in 2SI setup
Design credit to @yujincheng08
Close #5146. Fix #5491, fix #3752

Previously, Magisk changes the mount point from /system to /system_root
by patching fstab to prevent the original init from changing root.
The reason why we want to prevent the original init from switching the
root directory is because it will then be read-only, making patching
and injecting magiskinit into the boot chain difficult.

This commit (ab)uses the fact that the /data folder will never be part
of early mount (because it is handled very late in the boot by vold),
so that we can use it as the mount point of tmpfs to store files.

Some advantages of this method:

- No need to switch root manually
- No need to modify fstab, which significantly improves compatibility
  e.g. avoid hacks for weird devices like those using oplus.fstab,
  and avoid hacking init to bypass fstab in device trees
- Supports skip_mount.cfg
- Support DSU
2022-03-13 05:06:08 -07:00

175 lines
3.1 KiB
Makefile

LOCAL_PATH := $(call my-dir)
########################
# Binaries
########################
ifdef B_MAGISK
include $(CLEAR_VARS)
LOCAL_MODULE := magisk
LOCAL_STATIC_LIBRARIES := \
libutils \
libnanopb \
libsystemproperties \
libphmap \
libxhook
LOCAL_SRC_FILES := \
core/applets.cpp \
core/magisk.cpp \
core/daemon.cpp \
core/bootstages.cpp \
core/socket.cpp \
core/db.cpp \
core/scripting.cpp \
core/restorecon.cpp \
core/module.cpp \
core/logging.cpp \
core/thread.cpp \
resetprop/persist.cpp \
resetprop/resetprop.cpp \
su/su.cpp \
su/connect.cpp \
su/pts.cpp \
su/su_daemon.cpp \
zygisk/entry.cpp \
zygisk/main.cpp \
zygisk/utils.cpp \
zygisk/hook.cpp \
zygisk/memory.cpp \
zygisk/deny/cli.cpp \
zygisk/deny/utils.cpp \
zygisk/deny/revert.cpp
LOCAL_LDLIBS := -llog
include $(BUILD_EXECUTABLE)
endif
ifdef B_INIT
include $(CLEAR_VARS)
LOCAL_MODULE := magiskinit
LOCAL_STATIC_LIBRARIES := \
libutilx \
libsepol \
libxz
LOCAL_SRC_FILES := \
init/init.cpp \
init/mount.cpp \
init/rootdir.cpp \
init/getinfo.cpp \
init/twostage.cpp \
magiskpolicy/sepolicy.cpp \
magiskpolicy/magiskpolicy.cpp \
magiskpolicy/rules.cpp \
magiskpolicy/policydb.cpp \
magiskpolicy/statement.cpp
LOCAL_LDFLAGS := -static
include $(BUILD_EXECUTABLE)
endif
ifdef B_BOOT
include $(CLEAR_VARS)
LOCAL_MODULE := magiskboot
LOCAL_STATIC_LIBRARIES := \
libutilx \
libmincrypt \
liblzma \
liblz4 \
libbz2 \
libfdt \
libz \
libzopfli
LOCAL_SRC_FILES := \
magiskboot/main.cpp \
magiskboot/bootimg.cpp \
magiskboot/hexpatch.cpp \
magiskboot/compress.cpp \
magiskboot/format.cpp \
magiskboot/dtb.cpp \
magiskboot/ramdisk.cpp \
magiskboot/pattern.cpp \
magiskboot/cpio.cpp
LOCAL_LDFLAGS := -static
include $(BUILD_EXECUTABLE)
endif
ifdef B_POLICY
include $(CLEAR_VARS)
LOCAL_MODULE := magiskpolicy
LOCAL_STATIC_LIBRARIES := \
libutilx \
libsepol
LOCAL_SRC_FILES := \
core/applet_stub.cpp \
magiskpolicy/sepolicy.cpp \
magiskpolicy/magiskpolicy.cpp \
magiskpolicy/rules.cpp \
magiskpolicy/policydb.cpp \
magiskpolicy/statement.cpp
LOCAL_CFLAGS := -DAPPLET_STUB_MAIN=magiskpolicy_main
LOCAL_LDFLAGS := -static
include $(BUILD_EXECUTABLE)
endif
ifdef B_PROP
include $(CLEAR_VARS)
LOCAL_MODULE := resetprop
LOCAL_STATIC_LIBRARIES := \
libutilx \
libnanopb \
libsystemproperties
LOCAL_SRC_FILES := \
core/applet_stub.cpp \
resetprop/persist_properties.cpp \
resetprop/resetprop.cpp \
LOCAL_CFLAGS := -DAPPLET_STUB_MAIN=resetprop_main
LOCAL_LDFLAGS := -static
include $(BUILD_EXECUTABLE)
endif
ifdef B_TEST
ifneq (,$(wildcard jni/test.cpp))
include $(CLEAR_VARS)
LOCAL_MODULE := test
LOCAL_STATIC_LIBRARIES := \
libutils \
libphmap
LOCAL_SRC_FILES := test.cpp
include $(BUILD_EXECUTABLE)
endif
endif
ifdef B_BB
include jni/external/busybox/Android.mk
endif
########################
# Libraries
########################
include jni/utils/Android.mk
include jni/external/Android.mk