30 lines
628 B
C
30 lines
628 B
C
/* $Id$ */
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/*
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* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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*
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* This product is part of the Amsterdam Compiler Kit.
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*
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* Permission to use, sell, duplicate or disclose this software must be
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* obtained in writing. Requests for such permissions may be sent to
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*
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* Dr. Andrew S. Tanenbaum
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* Wiskundig Seminarium
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* Vrije Universiteit
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* Postbox 7161
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* 1007 MC Amsterdam
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* The Netherlands
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*
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*/
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#include "pc.h"
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void _wf(struct file* f)
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{
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_curfil = f;
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if ((f->flags & 0377) != MAGIC)
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_trp(EBADF);
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if ((f->flags & WRBIT) == 0)
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_trp(EWRITEF);
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}
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