Refactoring KPM support to check KPM status using CMD_ENABLE_KPM

kernel/core_hook.c

@@ -425,6 +425,18 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
 	}
 	#endif
 
+	if (arg2 == CMD_ENABLE_KPM) {
+    #ifdef CONFIG_KPM
+    bool KPM_Enabled = true;
+    #else
+    bool KPM_Enabled = false;
+    #endif
+    	if (copy_to_user((void __user *)arg3, &KPM_Enabled, sizeof(KPM_Enabled))) {
+        	pr_info("KPM: copy_to_user() failed\n");
+    	}
+    	return 0;
+	}
+
 	// all other cmds are for 'root manager'
 	if (!from_manager) {
 		return 0;