minix/lib/libp/buff.c
2005-04-21 14:53:53 +00:00

35 lines
781 B
C
Executable file

/* $Header$ */
/*
* (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
*
*/
/* 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);
}