123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114 |
- /****************************************************************************
- * libs/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 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 */
|