.\" Copyright (c) 1999 Softweyr LLC. .\" All rights reserved. .\" .\" 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. .\" .\" THIS SOFTWARE IS PROVIDED BY Softweyr LLC 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 Softweyr LLC 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. .\" .\" $FreeBSD: src/lib/libc/sys/aio_error.2,v 1.6.2.6 2001/12/14 18:34:00 ru Exp $ .\" .Dd June 2, 1999 .Dt AIO_ERROR 3 .Os .Sh NAME .Nm aio_error .Nd retrieve error status of asynchronous I/O operation (REALTIME) .Sh LIBRARY .Lb librt .Sh SYNOPSIS .In aio.h .Ft int .Fn aio_error "const struct aiocb *iocb" .Sh DESCRIPTION The .Fn aio_error function returns the error status of the asynchronous I/O request associated with the structure pointed to by .Fa iocb . .Sh RETURN VALUES If the asynchronous I/O request has completed successfully, .Fn aio_error returns 0. If the request has not yet completed, .Er EINPROGRESS is returned. If the request has completed unsuccessfully the error status is returned as described in .Xr read 2 , .Xr write 2 , or .Xr fsync 2 is returned. On failure, .Fn aio_error returns .Dv -1 and sets .Va errno to indicate the error condition. .Sh ERRORS The .Fn aio_error function will fail if: .Bl -tag -width Er .It Bq Er EINVAL .Fa iocb does not reference an outstanding asynchronous I/O request. .El .Sh SEE ALSO .Xr fsync 2 , .Xr read 2 , .Xr write 2 , .Xr aio_cancel 3 , .Xr aio_read 3 , .Xr aio_return 3 , .Xr aio_suspend 3 , .Xr aio_write 3 .Sh STANDARDS .Fn aio_error is expected to conform to the .St -p1003.2 standard. .Sh HISTORY The .Nm function first appeared in .Fx 3.0 . .Sh AUTHORS This manual page was written by .An Wes Peters Aq Mt wes@softweyr.com .