32 lines
700 B
C
32 lines
700 B
C
/* $Header$ */
|
|
/*
|
|
* (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();
|
|
|
|
_wf(f) struct file *f; {
|
|
|
|
_curfil = f;
|
|
if ((f->flags&0377) != MAGIC)
|
|
_trp(EBADF);
|
|
if ((f->flags & WRBIT) == 0)
|
|
_trp(EWRITEF);
|
|
}
|