AIO_ERROR(P) POSIX Programmer's Manual AIO_ERROR(P)
aio_error - retrieve errors status for an asynchronous I/O operation (REALTIME)
int aio_error(const struct aiocb *aiocbp);
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 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.
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.
The aio_error() function is part of the Asynchronous Input and Output option and need not
be available on all implementations.
aio_cancel() , aio_fsync() , aio_read() , aio_return() , aio_write() , close() , exec() ,
exit() , fork() , lio_listio() , lseek() , read() , the Base Definitions volume of
IEEE Std 1003.1-2001, <aio.h>
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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 AIO_ERROR(P)