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



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

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

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 argument. 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].

       If the aiocb structure pointed to by aiocbp is not associated with an
       operation that has been scheduled, the results are undefined.

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.

       If the aio__error() function fails, it shall return -1 and set errno to
       indicate the error.

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
       None.

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 POSIX.1-2017, <aio.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                         AIO_ERROR(3)
