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46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
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/* Copyright (C) 1991 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
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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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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DEFUN(fflush, (stream), 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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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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