NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | ATTRIBUTES | CONFORMING TO | EXAMPLE | SEE ALSO | COLOPHON

AIO_RETURN(3)             Linux Programmer's Manual            AIO_RETURN(3)

NAME         top

       aio_return - get return status of asynchronous I/O operation

SYNOPSIS         top

       #include <aio.h>

       ssize_t aio_return(struct aiocb *aiocbp);

       Link with -lrt.

DESCRIPTION         top

       The aio_return() function returns the final return status for the
       asynchronous I/O request with control block pointed to by aiocbp.
       (See aio(7) for a description of the aiocb structure.)

       This function should be called only once for any given request, after
       aio_error(3) returns something other than EINPROGRESS.

RETURN VALUE         top

       If the asynchronous I/O operation has completed, this function
       returns the value that would have been returned in case of a
       synchronous read(2), write(2), fsync(2) or fdatasync(2), call.  On
       error, -1 is returned, and errno is set appropriately.

       If the asynchronous I/O operation has not yet completed, the return
       value and effect of aio_return() are undefined.

ERRORS         top

       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.

       ENOSYS aio_return() is not implemented.

VERSIONS         top

       The aio_return() function is available since glibc 2.1.

ATTRIBUTES         top

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

       ┌─────────────┬───────────────┬─────────┐
       │Interface    Attribute     Value   │
       ├─────────────┼───────────────┼─────────┤
       │aio_return() │ Thread safety │ MT-Safe │
       └─────────────┴───────────────┴─────────┘

CONFORMING TO         top

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

EXAMPLE         top

       See aio(7).

SEE ALSO         top

       aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3),
       aio_suspend(3), aio_write(3), lio_listio(3), aio(7)

COLOPHON         top

       This page is part of release 4.10 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

                                 2015-03-02                    AIO_RETURN(3)