| /* Copyright (C) 1991, 1996 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| /* Flush STREAM's buffer. |
| If STREAM is NULL, flush the buffers of all streams that are writing. */ |
| int |
| 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) |
| { |
| __set_errno (EINVAL); |
| return EOF; |
| } |
| |
| return __flshfp (stream, EOF); |
| } |