fflush.c revision 3e14f97f673e8a630f076077de35afdd43dc1587
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#ifndef _USE_GNU
#define _USE_GNU
#endif
#include "stdhdr.h"
int
fflush(Sfio_t* f)
{
if (!f)
return fcloseall();
STDIO_INT(f, "fflush", int, (Sfio_t*), (f))
if (f->extent > 0)
sfseek(f, (Sfoff_t)0, SEEK_CUR|SF_PUBLIC);
return (sfsync(f) < 0 || sfpurge(f) < 0) ? -1 : 0;
}