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AIO_ERROR

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
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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.

ATTRIBUTES

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

Interface	Attribute	Value
aio_error()	Thread safety	MT-Safe

CONFORMING TO

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

EXAMPLE

See aio(7).

COLOPHON

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