ack/lang/pc/libpc/rf.c
2018-06-17 22:30:27 +02:00

32 lines
664 B
C

/* $Id$ */
/*
* (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.h"
void _rf(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);
}