From b90720764eab6c999fe7a4ef5169bb82fb080c22 Mon Sep 17 00:00:00 2001
From: Steve Slaven <bpk@hoopajoo.net>
Date: Thu, 23 Jul 2009 09:53:57 -0700
Subject: Only save if file was modified


diff --git a/fusearchive.py b/fusearchive.py
index 328ee49..b1ebc36 100755
--- a/fusearchive.py
+++ b/fusearchive.py
@@ -360,6 +360,7 @@ class FuseArchive(Fuse):
             dmsg( 2, "Writing to " + self.orig_path )
             self.file.seek(offset)
             self.file.write(buf)
+            self.modified = True
             return len(buf)
 
         def release(self, flags):
@@ -367,11 +368,14 @@ class FuseArchive(Fuse):
             dmsg( 2, "Release: " + self.orig_path )
             self.file.close()
 
-            dmsg( 2, "Copying working file back to storage: " + \
-                self.tmp_name + " -> " + self.orig_path )
+            if self.modified:
+                dmsg( 2, "Copying working file back to storage: " + \
+                    self.tmp_name + " -> " + self.orig_path )
 
-            #pdb.set_trace()
-            deflate( self.tmp_name, "./tree" + self.orig_path );
+                #pdb.set_trace()
+                deflate( self.tmp_name, "./tree" + self.orig_path )
+            else:
+                dmsg( 2, "File not modified, not copying back" )
 
             dmsg( 2, "Deleting old file: " + self.tmp_name )
             os.unlink( self.tmp_name );
@@ -396,6 +400,7 @@ class FuseArchive(Fuse):
             return os.fstat(self.fd)
 
         def ftruncate(self, len):
+            self.modified = True
             self.file.truncate(len)
 
         def lock(self, cmd, owner, **kw):
-- 
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