aio_return(3) — Linux manual page

aio_return(3)           Library Functions Manual           aio_return(3)

NAME

       aio_return - get return status of asynchronous I/O operation

LIBRARY

       Real-time library (librt, -lrt)

SYNOPSIS

       #include <aio.h>

       ssize_t aio_return(struct aiocb *aiocbp);

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 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

       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.

ATTRIBUTES

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ aio_return()                        │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       POSIX.1-2008.

HISTORY

       glibc 2.1.  POSIX.1-2001.

EXAMPLES

       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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Linux man-pages 6.9.1          2024-05-02                  aio_return(3)

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

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