DO NOT MERGE - Merge Android R QPR1

Bug: 172690556
Merged-In: Id57384c385a6d0bc931caf1054812a469daa9ed0
Change-Id: I22db7e344a9a96bfc16e009624b4896625306e83
diff --git a/fastboot/device/commands.cpp b/fastboot/device/commands.cpp
index 4601960..2b2a0bf 100644
--- a/fastboot/device/commands.cpp
+++ b/fastboot/device/commands.cpp
@@ -228,6 +228,11 @@
         return device->WriteStatus(FastbootResult::FAIL, "Unable to open fastboot HAL");
     }
 
+    //Disable "oem postwipedata userdata" to prevent user wipe oem userdata only.
+    if (args[0] == "oem postwipedata userdata") {
+        return device->WriteStatus(FastbootResult::FAIL, "Unable to do oem postwipedata userdata");
+    }
+
     Result ret;
     auto ret_val = fastboot_hal->doOemCommand(args[0], [&](Result result) { ret = result; });
     if (!ret_val.isOk()) {