/* @(#)setbuf.c	4.2 (Berkeley) 10/05/82 */
#include	<stdio.h>

setbuf(iop, buf)
register struct _iobuf *iop;
char *buf;
{
	if (iop->_base != NULL && iop->_flag&_IOMYBUF)
		free(iop->_base);
	iop->_flag &= ~(_IOMYBUF|_IONBF|_IOLBF);
	if ((iop->_base = buf) == NULL) {
		iop->_flag |= _IONBF;
		iop->_bufsiz = NULL;
	} else {
		iop->_ptr = iop->_base;
		iop->_bufsiz = BUFSIZ;
	}
	iop->_cnt = 0;
}