stream-unix: Use rundir as root for relative paths.

[sliver-openvswitch.git] / python / ovs / fatal_signal.py

diff --git a/python/ovs/fatal_signal.py b/python/ovs/fatal_signal.py
index b931512..e6fe783 100644 (file)
--- a/python/ovs/fatal_signal.py
+++ b/python/ovs/fatal_signal.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2010, 2011 Nicira Networks
+# Copyright (c) 2010, 2011 Nicira, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,16 +13,20 @@
 # limitations under the License.
 
 import atexit
-import logging
 import os
 import signal
 
+import ovs.vlog
+
 _hooks = []
+vlog = ovs.vlog.Vlog("fatal-signal")
+
 
 def add_hook(hook, cancel, run_at_exit):
     _init()
     _hooks.append((hook, cancel, run_at_exit))
 
+
 def fork():
     """Clears all of the fatal signal hooks without executing them.  If any of
     the hooks passed a 'cancel' function to add_hook(), then those functions
@@ -42,6 +46,7 @@ def fork():
 _added_hook = False
 _files = {}
 
+
 def add_file_to_unlink(file):
     """Registers 'file' to be unlinked when the program terminates via
     sys.exit() or a fatal signal."""
@@ -51,25 +56,28 @@ def add_file_to_unlink(file):
         add_hook(_unlink_files, _cancel_files, True)
     _files[file] = None
 
+
 def remove_file_to_unlink(file):
     """Unregisters 'file' from being unlinked when the program terminates via
     sys.exit() or a fatal signal."""
     if file in _files:
         del _files[file]
 
+
 def unlink_file_now(file):
     """Like fatal_signal_remove_file_to_unlink(), but also unlinks 'file'.
     Returns 0 if successful, otherwise a positive errno value."""
     error = _unlink(file)
     if error:
-        logging.warning("could not unlink \"%s\" (%s)"
-                        % (file, os.strerror(error)))
+        vlog.warn("could not unlink \"%s\" (%s)" % (file, os.strerror(error)))
     remove_file_to_unlink(file)
     return error
 
+
 def _unlink_files():
-    for file in _files:
-        _unlink(file)
+    for file_ in _files:
+        _unlink(file_)
+
 
 def _cancel_files():
     global _added_hook
@@ -77,14 +85,16 @@ def _cancel_files():
     _added_hook = False
     _files = {}
 
-def _unlink(file):
+
+def _unlink(file_):
     try:
-        os.unlink(file)
+        os.unlink(file_)
         return 0
     except OSError, e:
         return e.errno
+
 \f
-def _signal_handler(signr, frame):
+def _signal_handler(signr, _):
     _call_hooks(signr)
 
     # Re-raise the signal with the default handling so that the program
@@ -92,10 +102,14 @@ def _signal_handler(signr, frame):
     signal.signal(signr, signal.SIG_DFL)
     os.kill(os.getpid(), signr)
 
+
 def _atexit_handler():
     _call_hooks(0)
 
+
 recurse = False
+
+
 def _call_hooks(signr):
     global recurse
     if recurse:
@@ -106,7 +120,10 @@ def _call_hooks(signr):
         if signr != 0 or run_at_exit:
             hook()
 
+
 _inited = False
+
+
 def _init():
     global _inited
     if not _inited: