101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
/****************************************************************************
|
|
* libs/libc/aio/aio_error.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 <aio.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#ifdef CONFIG_FS_AIO
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* Configuration ************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: aio_error
|
|
*
|
|
* Description:
|
|
* The aio_error() function returns the error status associated with the
|
|
* aiocb structure referenced by the aiocbp argument. The error status fo
|
|
* an asynchronous I/O operation is the errno value that would be set by
|
|
* the corresponding read(), write(), fdatasync(), or fsync() operation. If
|
|
* the operation has not yet completed, then the error status will be equal
|
|
* to EINPROGRESS.
|
|
*
|
|
* Input Parameters:
|
|
* aiocbp - A pointer to an instance of struct aiocb
|
|
*
|
|
* Returned Value:
|
|
* If the asynchronous I/O operation has completed successfully, then 0
|
|
* will be returned. If the asynchronous operation has completed
|
|
* unsuccessfully, then the error status, as described for read(),
|
|
* write(), fdatasync(), and fsync(), will be returned. If the
|
|
* asynchronous I/O operation has not yet completed, then EINPROGRESS will
|
|
* be returned.
|
|
*
|
|
* The aio_error() function may fail if:
|
|
*
|
|
* EINVAL - The aiocbp argument does not refer to an asynchronous
|
|
* operation whose return status has not yet been retrieved.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int aio_error(FAR const struct aiocb *aiocbp)
|
|
{
|
|
DEBUGASSERT(aiocbp);
|
|
|
|
if (aiocbp->aio_result < 0)
|
|
{
|
|
return -aiocbp->aio_result;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
#endif /* CONFIG_FS_AIO */
|