usr/src/lib/libc/stdio/setbuf.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)setbuf.c    5.1 (Berkeley) %G%";
#endif not lint

#include        <stdio.h>

setbuf(iop, buf)
register FILE *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;
}