NAME

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

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <aio.h>

     ssize_t
     aio_return(struct aiocb *iocb);

DESCRIPTION

     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 it has completed (aio_error(2) 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).  Otherwise, aio_return() returns -1 and sets errno to
     indicate the error condition.

ERRORS

     The aio_return() system call will fail if:

     [EINVAL]           The iocb argument does not reference a completed asynchronous I/O
                        request.

SEE ALSO

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

STANDARDS

     The aio_return() system call is expected to conform to the IEEE Std 1003.1 (“POSIX.1”)
     standard.

HISTORY

     The aio_return() system call first appeared in FreeBSD 3.0.

AUTHORS

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