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  re‐
              trieved 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 │
       └─────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘

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

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)

Linux man-pages 6.03                                         2022-12-15                                               aio_return(3)