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

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       information   about   reporting   bugs,   and   the  latest  version  of  this  page,  can  be  found  at
       http://www.kernel.org/doc/man-pages/.

                                                   2015-03-02                                      AIO_RETURN(3)