plan9 man page for aio_return

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);

       Link with -lrt.

DESCRIPTION
       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
       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
       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
       The aio_return() 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_return() | Thread safety | MT-Safe |
       +-------------+---------------+---------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.

EXAMPLE
       See aio(7).

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

COLOPHON
       This  page is part of release 4.15 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/.

								    2017-09-15							     AIO_RETURN(3)