AIO_RETURN(3) Library Functions Manual AIO_RETURN(3)
NAME
aio_returnretrieve return status of asynchronous I/O operation (REALTIME)
LIBRARY
POSIX Real-time Library (librt, -lrt)
SYNOPSIS
#include <aio.h>
int
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 ALSO
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.