From 9cba3b98d8c43739833413d612f40b5a2b98b92f Mon Sep 17 00:00:00 2001
From: Michael Farrell <micolous+git@gmail.com>
Date: Wed, 11 Apr 2012 17:25:56 +0930
Subject: [PATCH] allow TftpServer.root not to exist if a dyn_file_func is
 provided

---
 tftpy/TftpServer.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tftpy/TftpServer.py b/tftpy/TftpServer.py
index 364227c..02b20dc 100644
--- a/tftpy/TftpServer.py
+++ b/tftpy/TftpServer.py
@@ -28,8 +28,11 @@ class TftpServer(TftpSession):
         # A dict of sessions, where each session is keyed by a string like
         # ip:tid for the remote end.
         self.sessions = {}
-
-        if os.path.exists(self.root):
+        
+        if callable(self.dyn_file_func):
+            # don't check the tftproot
+            pass
+        elif os.path.exists(self.root):
             log.debug("tftproot %s does exist" % self.root)
             if not os.path.isdir(self.root):
                 raise TftpException, "The tftproot must be a directory."