Home | History | Annotate | Download | only in stdio
      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 /*
     30  * Compatibility wrappers for setbuffer and setlinebuf
     31  */
     32 
     33 #include "lint.h"
     34 #include <sys/types.h>
     35 #include <stdio.h>
     36 #include <stdlib.h>
     37 
     38 /*
     39  * Associate a buffer with an "unused" stream.
     40  * If the buffer is NULL, then make the stream completely unbuffered.
     41  */
     42 void
     43 setbuffer(FILE *iop, char *abuf, size_t asize)
     44 {
     45 	if (abuf == NULL)
     46 		(void) setvbuf(iop, NULL, _IONBF, 0);
     47 	else
     48 		(void) setvbuf(iop, abuf, _IOFBF, asize);
     49 }
     50 
     51 /*
     52  * Convert a block buffered or line buffered stream to be line buffered
     53  * Allowed while the stream is still active; relies on the implementation
     54  * not the interface!
     55  */
     56 
     57 int
     58 setlinebuf(FILE *iop)
     59 {
     60 	(void) fflush(iop);
     61 	(void) setvbuf(iop, NULL, _IOLBF, 128);
     62 	return (0);
     63 }
     64