nuttx/libs/libc/stdio/lib_ferror.c

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/****************************************************************************
* libs/libc/stdio/lib_ferror.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: ferror
*
* Description:
* This function will test if the last operation resulted in an error.
* This is used to disambiguate EOF and error conditions.
*
* Returned Value:
* A non-zero value is returned to indicate the error condition.
*
****************************************************************************/
int ferror(FILE *stream)
{
/* If an error is encountered by any of the C-buffered I/O functions, they
* should set the __FS_FLAG_ERROR in the fs_flags field of struct
* file_struct.
*/
return (stream->fs_flags & __FS_FLAG_ERROR) != 0;
}
#endif /* CONFIG_FILE_STREAM */