aio_return(3) — Linux manual page


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 to indicate the error.

       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

       │Interface                             Attribute     Value   │
       │aio_return()                          │ Thread safety │ MT-Safe │

CONFORMING TO         top

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

EXAMPLES         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 5.13 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

                               2021-03-22                  AIO_RETURN(3)

Pages that refer to this page: aio_cancel(3)aio_error(3)aio_fsync(3)aio_read(3)aio_suspend(3)aio_write(3)lio_listio(3)aio(7)signal-safety(7)system_data_types(7)