ssize_t aio_return(struct aiocb *aiocbp);
Link with -lrt.
The aio_return() function returns the final return status for the asyn-
chronous I/O request with control block pointed to by aiocbp. (See
aio(7) for a description of the aiocb structure.)
This function should be called only once for any given request, after
aio_error(3) returns something other than EINPROGRESS.
If the asynchronous I/O operation has completed, this function returns
the value that would have been returned in case of a synchronous
read(2), write(2), fsync(2) or fdatasync(2), call.
If the asynchronous I/O operation has not yet completed, the return
value and effect of aio_return() are undefined.
EINVAL aiocbp does not point at a control block for an asynchronous I/O
request of which the return status has not been retrieved yet.
The aio_return() function is available since glibc 2.1.
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3),
aio_write(3), lio_listio(3), aio(7)
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