nuttx/libs/libc/stdio/lib_clearerr.c
SPRESENSE d5f66e5583 stdio/lib_clearerr: Did not clear stream buffer flags in clearerr
Stream buffer flags has a dependency with allocated buffer,
and it cannot clear without buffer operation.

Change clearerr to keep buffer flags to prevent unexpected
buffer operation.
2021-03-17 03:15:17 -07:00

54 lines
1.8 KiB
C

/****************************************************************************
* libs/libc/stdio/lib_clearerr.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <errno.h>
#include <nuttx/fs/fs.h>
#ifdef CONFIG_FILE_STREAM
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: Functions
*
* Description:
* Clear any end-of-file or error conditions.
*
* Returned Value:
* None
*
****************************************************************************/
void clearerr(FAR FILE *stream)
{
stream->fs_flags &= (__FS_FLAG_LBF | __FS_FLAG_UBF);
}
#endif /* CONFIG_FILE_STREAM */