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+.\"
+.\" This file and its contents are supplied under the terms of the
+.\" Common Development and Distribution License ("CDDL"), version 1.0.
+.\" You may only use this file in accordance with the terms of version
+.\" 1.0 of the CDDL.
+.\"
+.\" A full copy of the text of the CDDL should have accompanied this
+.\" source.  A copy of the CDDL is also available via the Internet at
+.\" http://www.illumos.org/license/CDDL.
+.\"
+.\"
+.\" Copyright (c) 2014, Joyent, Inc.
+.\"
+.Dd "Dec 20, 2014"
+.Dt FCLOSEALL 3C
+.Os
+.Sh NAME
+.Nm fcloseall
+.Nd close all standard I/O streams
+.Sh SYNOPSIS
+.In stdio.h
+.Ft int
+.Fo fcloseall
+.Fa void
+.Fc
+.Sh DESCRIPTION
+The
+.Fn fcloseall
+function closes all open standard I/O streams. The equivalent of
+.Xr fflush 3C
+is called on each stream before closing, thus any buffered or pending
+input is discarded while any buffered or pending output is written out
+to the underlying file. This includes the standard streams,
+.Vt stdin ,
+.Vt stdout ,
+and
+.Vt stderr .
+.Sh RETURN VALUES
+Currently, the function
+.Fn fcloseall
+always returns
+.Sy 0 .
+Note, portable applications should always check the return value.
+.Sh INTERFACE STABILITY
+.Sy Committed .
+.Sh MT-LEVEL
+.Sy Mt-Safe .
+.Sh SEE ALSO
+.Xr close 3C ,
+.Xr fflush 3C ,
+.Xr attributes 5 ,
+.Xr environ 5 ,
+.Xr standards 5