man:aio_return(3)

AIO_RETURN(3) Linux Programmer's Manual AIO_RETURN(3) NAME aio_return — get return status of asynchronous I/O operation SYNOPSIS #include <aio.h> ssize_t aio_return(struct aiocb *aiocbp); DESCRIPTION The aio_return() function returns the final return status for the asyn- chronous I/O request with control block pointed to by aiocbp. This function should be called only once for any given request, after aio_error(3) returns something other than EINPROGRESS. RETURN VALUE If the asynchronous I/O operation has completed, this function returns the value that would have been returned in case of a synchronous read, write, or fsync request. Otherwise the return value is undefined. On error, the error value is returned. ERRORS EINVAL aiocbp does not point at a control block for an asynchronous I/O request of which the return status has not been retrieved yet. CONFORMING TO POSIX.1-2001 SEE ALSO aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3), aio_write(3) 2003-11-14 AIO_RETURN(3)