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-rw-r--r--common/hardware_interface.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/common/hardware_interface.h b/common/hardware_interface.h
index 01405881..4a64c3e8 100644
--- a/common/hardware_interface.h
+++ b/common/hardware_interface.h
@@ -122,6 +122,10 @@ class HardwareInterface {
// Returns the timestamp of the current OS build.
virtual int64_t GetBuildTimestamp() const = 0;
+ // Returns true if the current OS build allows installing the payload with an
+ // older timestamp.
+ virtual bool AllowDowngrade() const = 0;
+
// Returns whether the first active ping was sent to Omaha at some point, and
// that the value is persisted across recovery (and powerwash) once set with
// |SetFirstActiveOmahaPingSent()|.