posix/src/aio_write.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup POSIX_AIO
0007  *
0008  * @brief Asynchronous write operation.
0009  */
0010
0011 /*
0012  * Copyright 2010, Alin Rus <alin.codejunkie@gmail.com>
0013  * Copyright 2024, Alessandro Nardin <ale.daluch@gmail.com>
0014  *
0015  * Redistribution and use in source and binary forms, with or without
0016  * modification, are permitted provided that the following conditions
0017  * are met:
0018  * 1. Redistributions of source code must retain the above copyright
0019  *    notice, this list of conditions and the following disclaimer.
0020  * 2. Redistributions in binary form must reproduce the above copyright
0021  *    notice, this list of conditions and the following disclaimer in the
0022  *    documentation and/or other materials provided with the distribution.
0023  *
0024  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0025  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0026  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0027  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0028  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0029  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0030  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0031  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0032  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0033  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0034  * POSSIBILITY OF SUCH DAMAGE.
0035  */
0036
0037 #ifdef HAVE_CONFIG_H
0038 #include "config.h"
0039 #endif
0040
0041 #include <aio.h>
0042 #include <errno.h>
0043 #include <fcntl.h>
0044 #include <rtems/posix/aio_misc.h>
0045 #include <rtems/seterr.h>
0046 #include <stdlib.h>
0047 #include <limits.h>
0048
0049 int aio_write( struct aiocb *aiocbp )
0050 {
0051   rtems_aio_request *req;
0052
0053   if ( 1 + atomic_load( &aio_request_queue.queued_requests ) > RTEMS_AIO_MAX ) {
0054     rtems_set_errno_and_return_minus_one( EAGAIN );
0055   }
0056
0057   req = init_write_req( aiocbp );
0058
0059   if ( req != NULL ) {
0060     return rtems_aio_enqueue( req );
0061   } else {
0062     return -1;
0063   }
0064 }
0065