keep config file's stat info while taking snapshot

pisi/db/historydb.py

@@ -44,7 +44,7 @@ class HistoryDB(lazydb.LazyDB):
         self.history.add(pkgBefore, pkgAfter, operation)
 
     def load_config(self, operation):
-        hist_dir = os.path.join(ctx.config.history_dir(), str(operation))
+        hist_dir = os.path.join(ctx.config.history_dir(), "%03d" % operation)
         if os.path.exists(hist_dir):
             import distutils.dir_util as dir_util
             dir_util.copy_tree(hist_dir, "/")
@@ -56,7 +56,7 @@ class HistoryDB(lazydb.LazyDB):
             return
 
         destdir = os.path.join(hist_dir, config_file[1:])
-        pisi.util.copy_file(config_file, destdir);
+        pisi.util.copy_file_stat(config_file, destdir);
 
     def update_history(self):
         self.history.update()

pisi/operations/history.py

@@ -146,5 +146,3 @@ def takeback(operation):
         pisi.operations.remove.remove(beremoved)
 
     historydb.load_config(operation)
-    
-    

pisi/util.py

@@ -310,6 +310,12 @@ def copy_file(src,dest):
     check_dir(os.path.dirname(dest))
     shutil.copyfile(src, dest)
 
+def copy_file_stat(src,dest):
+    """Copy source file to the destination file with all stat info."""
+    check_file(src)
+    check_dir(os.path.dirname(dest))
+    shutil.copy2(src, dest)
+
 def is_ar_file(file_path):
     return open(file_path).read(8) == '!<arch>\n'