/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1998 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <stdio.h>
#include <unistd.h>
extern void _findbuf();
static void lbfflush(FILE *);
int
__filbuf(FILE *iop)
{
return (_filbuf(iop));
}
int
_filbuf(FILE *iop)
{
if ( !(iop->_flag & _IOREAD) )
if (iop->_flag & _IORW)
iop->_flag |= _IOREAD;
else
return(EOF);
if (iop->_flag&_IOSTRG)
return(EOF);
if (iop->_base == NULL) /* get buffer if we don't have one */
_findbuf(iop);
/* if this device is a terminal (line-buffered) or unbuffered, then */
/* flush buffers of all line-buffered devices currently writing */
if (iop->_flag & (_IOLBF | _IONBF))
_fwalk(lbfflush);
iop->_ptr = iop->_base;
iop->_cnt = read(fileno(iop), (char *)iop->_base,
(unsigned)((iop->_flag & _IONBF) ? 1 : iop->_bufsiz ));
if (--iop->_cnt >= 0) /* success */
return (*iop->_ptr++);
if (iop->_cnt != -1) /* error */
iop->_flag |= _IOERR;
else { /* end-of-file */
iop->_flag |= _IOEOF;
if (iop->_flag & _IORW)
iop->_flag &= ~_IOREAD;
}
iop->_cnt = 0;
return (EOF);
}
static void
lbfflush(FILE *iop)
{
if (iop->_flag & _IOLBF)
(void) fflush(iop);
}