shill: vpn: Implement a ProcessKiller singleton.
This class may be used to terminate and reap child processes
asynchronously and robustly. Also:
- Use ProcessKiller to kill spawned "openvpn" and "l2tpipsec_vpn"
processes.
- Delete the associated OpenVPN tunnel interfaces cleanly after the
openvpn process dies.
- Fix a somewhat harmless bug where shill was sending SIGTERM to
already dead VPN processes from child watch callbacks.
BUG=chromium-os:31535,chromium-os:31571
TEST=unit tests, tested on device
Change-Id: If15f08e76c51dac33a434551ef4ba11ca66d0401
Reviewed-on: https://gerrit.chromium.org/gerrit/24610
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Ready: Darin Petkov <petkov@chromium.org>
diff --git a/mock_process_killer.cc b/mock_process_killer.cc
new file mode 100644
index 0000000..b3c3fb0
--- /dev/null
+++ b/mock_process_killer.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "shill/mock_process_killer.h"
+
+namespace shill {
+
+MockProcessKiller::MockProcessKiller() {}
+
+MockProcessKiller::~MockProcessKiller() {}
+
+} // namespace shill