setbuffer.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Compatibility wrappers for setbuffer and setlinebuf
*/
#include "synonyms.h"
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
/*
* Associate a buffer with an "unused" stream.
* If the buffer is NULL, then make the stream completely unbuffered.
*/
void
setbuffer(FILE *iop, char *abuf, size_t asize)
{
if (abuf == NULL)
(void) setvbuf(iop, NULL, _IONBF, 0);
else
(void) setvbuf(iop, abuf, _IOFBF, asize);
}
/*
* Convert a block buffered or line buffered stream to be line buffered
* Allowed while the stream is still active; relies on the implementation
* not the interface!
*/
int
setlinebuf(FILE *iop)
{
(void) fflush(iop);
(void) setvbuf(iop, NULL, _IOLBF, 128);
return (0);
}