aio_return - retrieve return status of asynchronous I/O operation (REALTIME)

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Library
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.Lb libc

.In aio.h int aio_return struct aiocb *iocb

The aio_return system call returns the final status of the asynchronous I/O request associated with the structure pointed to by iocb.

The aio_return system call should only be called once, to obtain the final status of an asynchronous I/O operation once aio_error(2) returns something other than EINPROGRESS.

If the asynchronous I/O request has completed, the status is returned as described in read(2), write(2), or fsync(2). On failure, aio_return returns -1 and sets errno to indicate the error condition.

The aio_return system call will fail if:

[EINVAL]
	The iocb argument does not reference an outstanding asynchronous I/O request.

aio_cancel(2), aio_error(2), aio_suspend(2), aio_waitcomplete(2), aio_write(2), fsync(2), read(2), write(2), aio(4)

The aio_return system call is expected to conform to the -p1003.1 standard.

The aio_return system call first appeared in
.Fx 3.0 .

This manual page was written by
.An Wes Peters Aq wes@softweyr.com .

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