AIO_RETURN(3)

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

LIBRARY
librt

SYNOPSIS
#include <aio.h>
ssize_t
aio_return(struct aiocb *iocb);

DESCRIPTION
The aio_return() function returns the final status of the asynchronous I/O request associated with the structure pointed to by iocb.

aio_return() should only be called once, to obtain the final status of an asynchronous I/O operation once aio_error(3) returns something other than EINPROGRESS.

RETURN VALUES
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.

ERRORS
The aio_return() function will fail if:

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

SEE ALSO
fsync(2), read(2), write(2), aio_cancel(3), aio_error(3), aio_read(3), aio_suspend(3), aio_write(3)

STANDARDS
aio_return() is expected to conform to the p1003.2 standard.

HISTORY
The aio_return function first appeared in FreeBSD 3.0.

AUTHORS
This manual page was written by Wes Peters <wes@softweyr.com>.