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>

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 .