/* $Header: /cvsup/minix/src/lib/ack/libp/rf.c,v 1.1 2005/10/10 15:27:47 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 * */#include	<pc_file.h>#include	<pc_err.h>extern struct file	*_curfil;extern			_trp();extern			_incpt();_rf(f) struct file *f; {	_curfil = f;	if ((f->flags&0377) != MAGIC)		_trp(EBADF);	if (f->flags & WRBIT)		_trp(EREADF);	if ((f->flags & WINDOW) == 0)		_incpt(f);}