75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/****************************************************************************
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* libs/libc/stdio/lib_setbuf.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <assert.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: setbuf
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*
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* Description:
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* Except that it returns no value, the function call setbuf(stream, buf)
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* is equivalent to:
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*
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* setvbuf(stream, buf, _IOFBF, BUFSIZ)
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*
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* if buf is not a null pointer, or to:
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*
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* setvbuf(stream, buf, _IONBF, BUFSIZ)
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*
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* if buf is a null pointer.
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*
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* Input Parameters:
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* stream - The stream whose buffer will be modified
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* buffer - If non-NULL, this is user allocated buffer of size BUFSIZ. If
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* NULL, setvbuf will disable buffering
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void setbuf(FAR FILE *stream, FAR char *buf)
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{
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#ifndef CONFIG_STDIO_DISABLE_BUFFERING
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int mode;
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DEBUGASSERT(stream != NULL);
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mode = (buf != NULL) ? _IOFBF : _IONBF;
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setvbuf(stream, buf, mode, BUFSIZ);
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#else
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DEBUGASSERT(stream != NULL);
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#endif
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}
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