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.TH FCLOSEALL 3  2017-09-15 "GNU" "Linux Programmer's Manual"

.SH NAME

fcloseall \- close all open streams

.SH SYNOPSIS

.nf

.BR "#define _GNU_SOURCE" "         /* See feature_test_macros(7) */"

.B #include <stdio.h>

.PP

.B int fcloseall(void);

.fi

.SH DESCRIPTION

The

.BR fcloseall ()

function closes all of the calling process's open streams.

Buffered output for each stream is written before it is closed

(as for

.BR fflush (3));

buffered input is discarded.

.PP

The standard streams,

.IR stdin ,

.IR stdout ,

and

.I stderr

are also closed.

.SH RETURN VALUE

This function returns 0 if all files were successfully closed;

on error,

.B EOF

is returned.

.SH ATTRIBUTES

For an explanation of the terms used in this section, see

.BR attributes (7).

.TS

allbox;

lb lb lb

l l l.

Interface	Attribute	Value

T{

.BR fcloseall ()

T}	Thread safety	MT-Unsafe race:streams

.TE

.PP

The

.BR fcloseall ()

function does not lock the streams, so it is not thread-safe.

.SH CONFORMING TO

This function is a GNU extension.

.SH SEE ALSO

.BR close (2),

.BR fclose (3),

.BR fflush (3),

.BR fopen (3),

.BR setbuf (3)

.SH COLOPHON

This page is part of release 4.15 of the Linux

.I man-pages

project.

A description of the project,

information about reporting bugs,

and the latest version of this page,

can be found at

\%https://www.kernel.org/doc/man\-pages/.