1.\" Copyright (c) 1999 Softweyr LLC. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY Softweyr LLC AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL Softweyr LLC OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd June 2, 1999 28.Dt AIO_ERROR 2 29.Os 30.Sh NAME 31.Nm aio_error 32.Nd retrieve error status of asynchronous I/O operation (REALTIME) 33.Sh LIBRARY 34.Lb libc 35.Sh SYNOPSIS 36.In aio.h 37.Ft int 38.Fn aio_error "const struct aiocb *iocb" 39.Sh DESCRIPTION 40The 41.Fn aio_error 42system call returns the error status of the asynchronous I/O request 43associated with the structure pointed to by 44.Fa iocb . 45.Sh RETURN VALUES 46If the asynchronous I/O request has completed successfully, 47.Fn aio_error 48returns 0. 49If the request has not yet completed, 50.Er EINPROGRESS 51is returned. 52If the request has completed unsuccessfully the error 53status is returned as described in 54.Xr read 2 , 55.Xr write 2 , 56or 57.Xr fsync 2 58is returned. 59On failure, 60.Fn aio_error 61returns 62.Dv -1 63and sets 64.Dv errno 65to indicate the error condition. 66.Sh ERRORS 67The 68.Fn aio_error 69system call will fail if: 70.Bl -tag -width Er 71.It Bq Er EINVAL 72The 73.Fa iocb 74argument 75does not reference an outstanding asynchronous I/O request. 76.El 77.Sh SEE ALSO 78.Xr aio_cancel 2 , 79.Xr aio_read 2 , 80.Xr aio_return 2 , 81.Xr aio_suspend 2 , 82.Xr aio_write 2 , 83.Xr fsync 2 , 84.Xr read 2 , 85.Xr write 2 , 86.Xr aio 4 87.Sh STANDARDS 88The 89.Fn aio_error 90system call 91is expected to conform to the 92.St -p1003.1 93standard. 94.Sh HISTORY 95The 96.Fn aio_error 97system call first appeared in 98.Fx 3.0 . 99.Sh AUTHORS 100This 101manual page was written by 102.An Wes Peters Aq [email protected] . 103