/**************************************************************************** * 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 */