Manpages - aio_return.3

aio_return - get return status of asynchronous I/O operation

  #include <aio.h>

  ssize_t aio_return(struct aiocb *aiocbp);

  Link with -lrt.

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.

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.

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.

The *aio_return*() function is available since glibc 2.1.

For an explanation of the terms used in this section, see *attributes*(7).

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

See *aio*(7).

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

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