Fix detect WriteMode for shadow-.

pym/cl_migrate_users.py

@@ -402,10 +402,10 @@ class migrate(color_print):
         # Check permissions backup files
         checkNewBackupFiles = map(lambda x:pathJoin(self.prefixNewSystem,x+"-"),
                                   checkThisFiles)
-        notWriteBackup = lambda x: not os.access(x, os.W_OK) or\
+        notWriteBackup = lambda x: not os.access(x, os.W_OK) and \
-                                   (not os.path.exists(x) and\
+                                   (os.path.exists(x) or \
                                     not os.access(os.path.dirname(x), os.W_OK))
-        filesNotWrite = filter(notWrite, checkNewBackupFiles)
+        filesNotWrite = filter(notWriteBackup, checkNewBackupFiles)
         if filesNotWrite:
             self.printERROR(_("Can not write to files") + ": " +\
                             ", ".join(filesNotWrite))