source: trunk/minix/lib/ack/libp/buff.c@ 20

/* $Header: /cvsup/minix/src/lib/ack/libp/buff.c,v 1.1 2005/10/10 15:27:46 beng Exp $ */
/*
 * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
 *
 *          This product is part of the Amsterdam Compiler Kit.
 *
 * Permission to use, sell, duplicate or disclose this software must be
 * obtained in writing. Requests for such permissions may be sent to
 *
 *      Dr. Andrew S. Tanenbaum
 *      Wiskundig Seminarium
 *      Vrije Universiteit
 *      Postbox 7161
 *      1007 MC Amsterdam
 *      The Netherlands
 *
 */

/* Author: J.W. Stevenson */

#include        <pc_file.h>

extern          _flush();

/* procedure buff(var f:file of ?); */

buff(f) struct file *f; {
        int sz;

        if ((f->flags & (0377|WRBIT)) != (MAGIC|WRBIT))
                return;
        _flush(f);
        sz = f->size;
        f->count = f->buflen = (sz>PC_BUFLEN ? sz : PC_BUFLEN-PC_BUFLEN%sz);
}