48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Copyright (C) 1991, 1996, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* Flush STREAM's buffer.
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If STREAM is NULL, flush the buffers of all streams that are writing. */
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int
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fflush (stream)
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register FILE *stream;
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{
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if (stream == NULL)
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{
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int lossage = 0;
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for (stream = __stdio_head; stream != NULL; stream = stream->__next)
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if (__validfp (stream) && stream->__mode.__write)
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lossage |= fflush (stream) == EOF;
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return lossage ? EOF : 0;
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}
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if (!__validfp (stream) || !stream->__mode.__write)
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{
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__set_errno (EINVAL);
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return EOF;
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}
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return __flshfp (stream, EOF);
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}
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weak_alias(fflush, fflush_unlocked)
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