115 lines
4.6 KiB
C
115 lines
4.6 KiB
C
/****************************************************************************
|
|
* libc/aio/aio_error.c
|
|
*
|
|
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* 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 Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* 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 */
|