1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 
24 #ifndef _USE_GNU
25 #define _USE_GNU
26 #endif
27 
28 #include "stdhdr.h"
29 
30 int
fflush(Sfio_t * f)31 fflush(Sfio_t* f)
32 {
33 	if (!f)
34 		return fcloseall();
35 
36 	STDIO_INT(f, "fflush", int, (Sfio_t*), (f))
37 
38 	if (f->extent > 0)
39 		sfseek(f, (Sfoff_t)0, SEEK_CUR|SF_PUBLIC);
40 	return (sfsync(f) < 0 || sfpurge(f) < 0) ? -1 : 0;
41 }
42