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AIO_RETURN(3)         DragonFly Library Functions Manual         AIO_RETURN(3)

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

LIBRARY
     POSIX Real-time Library (librt, -lrt)

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 IEEE Std 1003.2 (``POSIX.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>.

DragonFly 3.5                    June 2, 1999                    DragonFly 3.5