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diff --git a/src/ngircd/io.h b/src/ngircd/io.h
index 3890bcc7..556d752c 100644
--- a/src/ngircd/io.h
+++ b/src/ngircd/io.h
@@ -4,27 +4,29 @@
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  * Please read the file COPYING, README and AUTHORS for more information.
- *
- * I/O abstraction interface header
- *
- * $Id: io.h,v 1.1 2005/07/07 18:38:35 fw Exp $
  */
 
-#ifndef io_H_inclucded
+#ifndef io_H_included
 #define io_H_included
 
+/**
+ * @file
+ * I/O abstraction interface (header)
+ */
+
 #include "portab.h"
 #include <sys/time.h>
 
 #define IO_WANTREAD	1
 #define IO_WANTWRITE	2
 
-/* init library.  sets up epoll/kqueue descriptors and tries to allocate space for ioevlen file descriptors.
-   ioevlen is just the _initial_ size, not a limit. */
+/* init library.
+   sets up epoll/kqueue descriptors and tries to allocate space for ioevlen
+   file descriptors. ioevlen is just the _initial_ size, not a limit. */
 bool io_library_init PARAMS((unsigned int ioevlen));
 
 /* shutdown and free all internal data structures */
-bool io_library_shutdown PARAMS((void));
+void io_library_shutdown PARAMS((void));
 
 /* add fd to internal set, enable readability check, set callback */
 bool io_event_create PARAMS((int fd, short what, void (*cbfunc)(int, short)));
@@ -44,6 +46,9 @@ bool io_close PARAMS((int fd));
 /* set O_NONBLOCK */
 bool io_setnonblock PARAMS((int fd));
 
+/* set O_CLOEXEC */
+bool io_setcloexec PARAMS((int fd));
+
 /* watch fds for activity */
 int io_dispatch PARAMS((struct timeval *tv));