jehanne/sys/src/lib/stdio/setbuf.c

27 lines
693 B
C

/*
* 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 */
}