oracular (3) aio_error.3posix.gz

Provided by: manpages-posix-dev_2017a-2_all bug

PROLOG
       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult 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


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>


       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 .