/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* * pANS stdio -- setbuf */#include "iolib.h"void setbuf(FILE *f, char *buf){	if(f->state==OPEN){		if(buf)			f->bufl=BUFSIZ;		else{			buf=f->unbuf;			f->bufl=0;		}		f->rp=f->wp=f->lp=f->buf=buf;		f->state=RDWR;	}	/* else error, but there's no way to report it */}