recovery: use __android_log_pmsg_file_write for log files
(cherry-pick from commit a4f701af93a5a739f34823cde0c493dfbc63537a)
- Add call to __android_log_pmsg_file_write for recovery logging.
- Add call to refresh pmsg if we reboot back into recovery and then
allow overwrite of those logs.
- Add a new one-time executable recovery-refresh that refreshes pmsg
in post-fs phase of init. We rely on pmsg eventually scrolling off
to age the content after recovery-persist has done its job.
- Add a new one-time executable recovery-persist that transfers from
pmsg to /data/misc/recovery/ directory if /cache is not mounted
in post-fs-data phase of init.
- Build and appropriately trigger the above two as required if
BOARD_CACHEIMAGE_PARTITION_SIZE is undefined.
- Add some simple unit tests
NB: Test failure is expected on systems that do not deliver either
the recovery-persist or recovery-refresh executables, e.g. systems
with /cache. Tests also require a timely reboot sequence of test
to truly verify, tests provide guidance on stderr to direct.
Bug: 27176738
Change-Id: I17bb95980234984f6b2087fd5941b0a3126b706b
diff --git a/Android.mk b/Android.mk
index 5b488ca..6c3ce56 100644
--- a/Android.mk
+++ b/Android.mk
@@ -101,6 +101,30 @@
LOCAL_STATIC_LIBRARIES += $(TARGET_RECOVERY_UI_LIB)
endif
+ifeq ($(BOARD_CACHEIMAGE_PARTITION_SIZE),)
+LOCAL_REQUIRED_MODULES := recovery-persist recovery-refresh
+endif
+
+include $(BUILD_EXECUTABLE)
+
+# recovery-persist (system partition dynamic executable run after /data mounts)
+# ===============================
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := recovery-persist.cpp
+LOCAL_MODULE := recovery-persist
+LOCAL_SHARED_LIBRARIES := liblog libbase
+LOCAL_CFLAGS := -Werror
+LOCAL_INIT_RC := recovery-persist.rc
+include $(BUILD_EXECUTABLE)
+
+# recovery-refresh (system partition dynamic executable run at init)
+# ===============================
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := recovery-refresh.cpp
+LOCAL_MODULE := recovery-refresh
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_CFLAGS := -Werror
+LOCAL_INIT_RC := recovery-refresh.rc
include $(BUILD_EXECUTABLE)
# All the APIs for testing