From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- stdio/fflush.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 stdio/fflush.c (limited to 'stdio/fflush.c') diff --git a/stdio/fflush.c b/stdio/fflush.c new file mode 100644 index 0000000..a6d52ba --- /dev/null +++ b/stdio/fflush.c @@ -0,0 +1,45 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include + +/* Flush STREAM's buffer. + If STREAM is NULL, flush the buffers of all streams that are writing. */ +int +DEFUN(fflush, (stream), register FILE *stream) +{ + if (stream == NULL) + { + int lossage = 0; + for (stream = __stdio_head; stream != NULL; stream = stream->__next) + if (__validfp(stream) && stream->__mode.__write) + lossage |= fflush(stream) == EOF; + return lossage ? EOF : 0; + } + + if (!__validfp(stream) || !stream->__mode.__write) + { + errno = EINVAL; + return EOF; + } + + return __flshfp(stream, EOF); +} -- cgit v1.1