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diff --git a/src/ceph/src/global/signal_handler.h b/src/ceph/src/global/signal_handler.h
new file mode 100644
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--- /dev/null
+++ b/src/ceph/src/global/signal_handler.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef CEPH_GLOBAL_SIGNAL_HANDLER_H
+#define CEPH_GLOBAL_SIGNAL_HANDLER_H
+
+#include <signal.h>
+#include "acconfig.h"
+
+typedef void (*signal_handler_t)(int);
+
+#ifndef HAVE_REENTRANT_STRSIGNAL
+# define sig_str(signum) sys_siglist[signum]
+#else
+# define sig_str(signum) strsignal(signum)
+#endif
+
+void install_sighandler(int signum, signal_handler_t handler, int flags);
+
+// handles SIGHUP
+void sighup_handler(int signum);
+
+// Install the standard Ceph signal handlers
+void install_standard_sighandlers(void);
+
+
+/// initialize async signal handler framework
+void init_async_signal_handler();
+
+/// shutdown async signal handler framework
+void shutdown_async_signal_handler();
+
+/// queue an async signal
+void queue_async_signal(int signum);
+
+/// install a safe, async, callback for the given signal
+void register_async_signal_handler(int signum, signal_handler_t handler);
+void register_async_signal_handler_oneshot(int signum, signal_handler_t handler);
+
+/// uninstall a safe async signal callback
+void unregister_async_signal_handler(int signum, signal_handler_t handler);
+
+#endif