1AIO_ERROR(3P)              POSIX Programmer's Manual             AIO_ERROR(3P)
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PROLOG

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

13       aio_error — retrieve errors status for an asynchronous I/O operation
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SYNOPSIS

16       #include <aio.h>
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18       int aio_error(const struct aiocb *aiocbp);
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DESCRIPTION

21       The aio_error() function shall return the error status associated  with
22       the aiocb structure referenced by the aiocbp argument. The error status
23       for an asynchronous I/O operation is the errno value that would be  set
24       by  the  corresponding  read(), write(), fdatasync(), or fsync() opera‐
25       tion. If the operation has not yet completed,  then  the  error  status
26       shall be equal to [EINPROGRESS].
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28       If  the  aiocb structure pointed to by aiocbp is not associated with an
29       operation that has been scheduled, the results are undefined.
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RETURN VALUE

32       If the asynchronous I/O operation has completed  successfully,  then  0
33       shall  be  returned. If the asynchronous operation has completed unsuc‐
34       cessfully, then the error status, as  described  for  read(),  write(),
35       fdatasync(),  and  fsync(),  shall be returned. If the asynchronous I/O
36       operation has not yet completed, then [EINPROGRESS] shall be returned.
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38       If the aio_error() function fails, it shall return −1 and set errno  to
39       indicate the error.
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ERRORS

42       The aio_error() function may fail if:
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44       EINVAL The  aiocbp argument does not refer to an asynchronous operation
45              whose return status has not yet been retrieved.
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47       The following sections are informative.
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EXAMPLES

50       None.
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APPLICATION USAGE

53       None.
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RATIONALE

56       None.
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FUTURE DIRECTIONS

59       None.
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SEE ALSO

62       aio_cancel(), aio_fsync(), aio_read(), aio_return(), aio_write(),
63       close(), exec, exit(), fork(), lio_listio(), lseek(), read()
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65       The Base Definitions volume of POSIX.1‐2008, <aio.h>
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68       Portions  of  this text are reprinted and reproduced in electronic form
69       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
70       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
71       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
72       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
73       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
74       event of any discrepancy between this version and the original IEEE and
75       The Open Group Standard, the original IEEE and The Open Group  Standard
76       is  the  referee document. The original Standard can be obtained online
77       at http://www.unix.org/online.html .
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79       Any typographical or formatting errors that appear  in  this  page  are
80       most likely to have been introduced during the conversion of the source
81       files to man page format. To report such errors,  see  https://www.ker‐
82       nel.org/doc/man-pages/reporting_bugs.html .
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86IEEE/The Open Group                  2013                        AIO_ERROR(3P)
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