AIO_RETURN(3) BSD Library Functions Manual AIO_RETURN(3)NAMEaio_return — retrieve return status of asynchronous I/O operation (REAL‐
TIME)
LIBRARY
POSIX Real-time Library (librt, -lrt)
SYNOPSIS
#include <aio.h>
ssize_t
aio_return(struct aiocb *aiocbp);
DESCRIPTION
The aio_return() system call returns the final status of the asynchronous
I/O request associated with the structure pointed to by aiocbp.
The aio_return() system call should only be called once, to obtain the
final status of an asynchronous I/O operation once it has completed
(aio_error(3) returns something other than EINPROGRESS).
RETURN VALUES
If the asynchronous I/O request has completed, the status is returned as
described in read(2), write(2), or fsync(2). Otherwise, aio_return()
returns -1 and sets errno to indicate the error condition.
ERRORS
The aio_return() system call will fail if:
[EINVAL] The aiocbp argument does not reference a completed
asynchronous I/O request.
SEE ALSOfsync(2), read(2), write(2), aio(3)STANDARDS
The aio_return() system call is expected to conform to the IEEE Std
1003.1-2001 (“POSIX.1”) standard.
HISTORY
The aio_return() system call first appeared in NetBSD 5.0.
BSD August 13, 2011 BSD