From f2ac496e22d97a6092aeb74b61e14cd82780431d Mon Sep 17 00:00:00 2001
From: Mike Auty <mike.auty@gmail.com>
Date: Wed, 30 Dec 2020 17:48:07 +0000
Subject: [PATCH] Core: Implement the ability to cache from the CLI

---
 volatility/__init__.py          | 2 ++
 volatility/cli/__init__.py      | 6 ++++++
 volatility/framework/caching.py | 9 +++++++++
 3 files changed, 17 insertions(+)
 create mode 100644 volatility/framework/caching.py

diff --git a/volatility/__init__.py b/volatility/__init__.py
index f766a4ba2..ebdde4d27 100644
--- a/volatility/__init__.py
+++ b/volatility/__init__.py
@@ -10,6 +10,8 @@ from typing import List, TypeVar, Callable, Any, Optional
 _T = TypeVar("_T")
 _S = TypeVar("_S")
 
+CACHING = True
+
 
 class classproperty(property):
     """Class property decorator.
diff --git a/volatility/cli/__init__.py b/volatility/cli/__init__.py
index 3e680aa26..92fce87cd 100644
--- a/volatility/cli/__init__.py
+++ b/volatility/cli/__init__.py
@@ -22,6 +22,11 @@ import traceback
 from typing import Dict, Type, Union, Any
 from urllib import parse, request
 
+import volatility
+
+if "--live" in sys.argv:
+    volatility.CACHING = False
+
 import volatility.plugins
 import volatility.symbols
 from volatility import framework
@@ -134,6 +139,7 @@ class CommandLine:
                             help = "Log output to a file as well as the console",
                             default = None,
                             type = str)
+        parser.add_argument("--live", help = "Disable caching of layer reads", action = 'store_true')
         parser.add_argument("-o",
                             "--output-dir",
                             help = "Directory in which to output any generated files",
diff --git a/volatility/framework/caching.py b/volatility/framework/caching.py
new file mode 100644
index 000000000..39ed3c3ef
--- /dev/null
+++ b/volatility/framework/caching.py
@@ -0,0 +1,9 @@
+import functools
+import volatility
+
+
+def lru_cache(*args, **kwargs):
+    if not volatility.CACHING:
+        return lambda x: x
+    raise Exception
+    return functools.lru_cache(*args, **kwargs)