aio_error(3) - Linux man page

Name

aio_error - get error status of asynchronous I/O operation

Synopsis

#include <aio.h>

int aio_error(const struct aiocb *aiocbp);

Link with -lrt.

Description

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.

Errors

EINVAL: 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.
ENOSYS: aio_error() is not implemented.

Versions

The aio_error() function is available since glibc 2.1.

Conforming to

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

Example

See aio(7).