aio_error man page

aio_error — get error status of asynchronous I/O operation


#include <aio.h>

int aio_error(const struct aiocb *aiocbp);

Link with -lrt.


The aio_error() function returns the error status for the asynchronous I/O request with control block pointed to by aiocbp. (See aio(7) for a description of the aiocb structure.)

Return Value

This function returns one of the following:

EINPROGRESS, if the request has not been completed yet.
ECANCELED, if the request was canceled.
0, if the request completed successfully.
A positive error number, if the asynchronous I/O operation failed. This is the same value that would have been stored in the errno variable in the case of a synchronous read(2), write(2), fsync(2), or fdatasync(2) call.


aiocbp does not point at a control block for an asynchronous I/O request of which the return status (see aio_return(3)) has not been retrieved yet.
aio_error() is not implemented.


The aio_error() function is available since glibc 2.1.


For an explanation of the terms used in this section, see attributes(7).

aio_error()Thread safetyMT-Safe

Conforming to

POSIX.1-2001, POSIX.1-2008.


See aio(7).

See Also

aio_cancel(3), aio_fsync(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7)


This page is part of release 4.09 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at

Referenced By

aio(7), aio_cancel(3), aio_fsync(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3).

2015-03-02 Linux Programmer's Manual