4.3BSD-Reno/src/lib/libpc/PFLUSH.c

/*-
 * Copyright (c) 1979 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. Neither the name of the University nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)PFLUSH.c	1.3 (Berkeley) 4/9/90";
#endif /* not lint */

#include "h00vars.h"

/*
 * insure that a usable image is in the buffer window
 */
PFLUSH()
{
	register struct iorec	*next;

	for (next = _fchain.fchain; next != FILNIL; next = next->fchain) {
		if ((next->funit & (FDEF | FREAD)) != 0)
			continue;
		if (next->fbuf != 0)
			fflush(next->fbuf);
	}
}