124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/* setbuffer.c- file for stdio.h */
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/* Copyright 1992-1993 Wind River Systems, Inc. */
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/*
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modification history
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--------------------
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01c,05mar93,jdi documentation cleanup for 5.1.
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01b,20sep92,smb documentation additions
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01a,29jul92,jcf Added OBJ_VERIFY
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+smb taken from UCB stdio
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*/
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/*
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DESCRIPTION
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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INCLUDE FILE: stdio.h
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SEE ALSO: American National Standard X3.159-1989
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NOMANUAL
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*/
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#include "vxWorks.h"
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#include "objLib.h"
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#include "private/stdioP.h"
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/******************************************************************************
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*
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* setbuffer - specify buffering for a stream
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*
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* This routine specifies a buffer <buf> to be used for a stream in place of the
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* automatically allocated buffer. If <buf> is NULL, the stream is unbuffered.
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* This routine should be called only after the stream has been associated with
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* an open file and before any other operation is performed on the stream.
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*
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* This routine is provided for compatibility with earlier VxWorks releases.
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*
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* INCLUDE FILES: stdio.h
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*
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* RETURNS: N/A
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*
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* SEE ALSO: setvbuf()
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*/
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void setbuffer
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(
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FAST FILE * fp, /* stream to set buffering for */
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char * buf, /* buffer to use */
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int size /* buffer size */
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)
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{
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if (OBJ_VERIFY (fp, fpClassId) != OK)
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return;
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(void) setvbuf (fp, buf, ((buf) ? (_IOFBF) : (_IONBF)), size);
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}
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/******************************************************************************
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*
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* setlinebuf - set line buffering for standard output or standard error
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*
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* This routine changes `stdout' or `stderr' streams from block-buffered or
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* unbuffered to line-buffered. Unlike setbuf(), setbuffer(), or setvbuf(), it
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* can be used at any time the stream is active.
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*
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* A stream can be changed from unbuffered or line-buffered to fully buffered
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* using freopen(). A stream can be changed from fully buffered or
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* line-buffered to unbuffered using freopen() followed by setbuf() with a
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* buffer argument of NULL.
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*
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* This routine is provided for compatibility with earlier VxWorks releases.
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*
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* INCLUDE: stdio.h
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*
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* RETURNS: OK, or ERROR if <fp> is not a valid stream.
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*/
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int setlinebuf
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(
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FILE * fp /* stream - stdout or stderr */
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)
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{
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if (OBJ_VERIFY (fp, fpClassId) != OK)
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return (ERROR);
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(void) setvbuf (fp, (char *)NULL, _IOLBF, (size_t)0);
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return (OK); /* ??? */
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}
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