Make non-volatile directory platform-specific.
update_engine daemon needs to persist files (such as the progress of
the update) in a non-volatile storage and also used to store a
marker file on a volatile storage to detect when update_engine is
restarted, likelly due to a crash.
This patch moves the non-volatile directory configuration to the
Hardware interface, making it platform-specific. It also replaces the
system rebooted detection using the boot_id provided by the kernel
instead of storing a file under /tmp. This implementation works both
on Chrome OS and Android.
Bug: 24074252
Test: FEATURES=test emerge-link update_engine; `mma`; deployed and tested manually on brillo.
Change-Id: I921d767982adebfd04eb12e08d8a157d9102d1e3
diff --git a/hardware_android.h b/hardware_android.h
index 0a341c0..03bc9fc 100644
--- a/hardware_android.h
+++ b/hardware_android.h
@@ -41,6 +41,8 @@
std::string GetFirmwareVersion() const override;
std::string GetECVersion() const override;
int GetPowerwashCount() const override;
+ bool GetNonVolatileDirectory(base::FilePath* path) const override;
+ bool GetPowerwashSafeDirectory(base::FilePath* path) const override;
private:
DISALLOW_COPY_AND_ASSIGN(HardwareAndroid);