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NAME

       aio_return - get return status of asynchronous I/O operation

SYNOPSIS

       #include <aio.h>

       ssize_t aio_return(struct aiocb *aiocbp);

       Link with -lrt.

DESCRIPTION

       The  aio_return()  function  returns  the  final  return status for the
       asynchronous 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.

RETURN VALUE

       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.

ERRORS

       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.

VERSIONS

       The aio_return() function is available since glibc 2.1.

CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

EXAMPLE

       See aio(7).

SEE ALSO

       aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3),
       aio_write(3), lio_listio(3), aio(7)

COLOPHON

       This  page  is  part of release 3.35 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://man7.org/linux/man-pages/.

                                  2010-10-03                     AIO_RETURN(3)