1 files changed, 9 insertions, 0 deletions
diff --git a/signal.h b/signal.h
index 5fb4a897..91bddc92 100644
--- a/signal.h
+++ b/signal.h
@@ -3,6 +3,8 @@
 The library for various signal related issues
 
 */
+#ifndef FISH_SIGNALH
+#define FISH_SIGNALH
 
 /**
    Get the integer signal value representing the specified signal, or
@@ -47,3 +49,10 @@ void signal_block();
    Unblock all signals
 */
 void signal_unblock();
+
+/**
+   Returns true if signals are being blocked
+*/
+int signal_is_blocked();
+
+#endif