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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "AIO_ERROR" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" aio_error 
+.SH NAME
+aio_error \- retrieve errors status for an asynchronous I/O operation
+(\fBREALTIME\fP)
+.SH SYNOPSIS
+.LP
+\fB#include <aio.h>
+.br
+.sp
+int aio_error(const struct aiocb *\fP\fIaiocbp\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIaio_error\fP() function shall return the error status associated
+with the \fBaiocb\fP structure referenced by the
+\fIaiocbp\fP argument. The error status for an asynchronous I/O operation
+is the \fIerrno\fP value that would be set by the
+corresponding \fIread\fP(), \fIwrite\fP(),   \fIfdatasync\fP(),  or
+\fIfsync\fP() operation. If the operation has not yet completed, then
+the error status shall be
+equal to [EINPROGRESS].
+.SH RETURN VALUE
+.LP
+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
+\fIread\fP(), \fIwrite\fP(),   \fIfdatasync\fP(),  and \fIfsync\fP(),
+shall be returned.
+If the asynchronous I/O operation has not yet completed, then [EINPROGRESS]
+shall be returned.
+.SH ERRORS
+.LP
+The \fIaio_error\fP() function may fail if:
+.TP 7
+.B EINVAL
+The \fIaiocbp\fP argument does not refer to an asynchronous operation
+whose return status has not yet been retrieved.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+The \fIaio_error\fP() function is part of the Asynchronous Input and
+Output option and need not be available on all
+implementations.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIaio_cancel\fP() , \fIaio_fsync\fP() , \fIaio_read\fP() , \fIaio_return\fP()
+, \fIaio_write\fP() , \fIclose\fP() , \fIexec\fP() , \fIexit\fP()
+, \fIfork\fP() , \fIlio_listio\fP() , \fIlseek\fP() , \fIread\fP()
+,
+the Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<aio.h>\fP
+.SH 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, Copyright (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.opengroup.org/unix/online.html .