AIO_ERROR(3P)                                       POSIX Programmer's Manual                                      AIO_ERROR(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

NAME
       aio_error - retrieve errors status for an asynchronous I/O operation (REALTIME)

SYNOPSIS
       #include <aio.h>

       int aio_error(const struct aiocb *aiocbp);


DESCRIPTION
       The aio_error() function shall return the error status associated with the aiocb structure referenced by the aiocbp argu-
       ment. The error status for an asynchronous I/O operation is the errno value  that  would  be  set  by  the  corresponding
       read(),  write(),    fdatasync(),   or  fsync()  operation. If the operation has not yet completed, then the error status
       shall be equal to [EINPROGRESS].

RETURN VALUE
       If the asynchronous I/O operation has completed successfully, then 0 shall be returned. If the asynchronous operation has
       completed  unsuccessfully, then the error status, as described for read(), write(),   fdatasync(),  and fsync(), shall be
       returned.  If the asynchronous I/O operation has not yet completed, then [EINPROGRESS] shall be returned.

ERRORS
       The aio_error() function may fail if:

       EINVAL The aiocbp argument does not refer to an asynchronous operation whose return status has not yet been retrieved.


       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The aio_error() function is part of the Asynchronous Input and Output option and need not be available on all implementa-
       tions.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       aio_cancel(), aio_fsync(), aio_read(), aio_return(), aio_write(), close(), exec(), exit(), fork(), lio_listio(), lseek(),
       read() , the Base Definitions volume of IEEE Std 1003.1-2001, <aio.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003  Edition,  Standard  for
       Information  Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copy-
       right (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any
       discrepancy  between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group
       Standard  is  the  referee   document.   The   original   Standard   can   be   obtained   online   at   http://www.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                 AIO_ERROR(3P)