aio_return (3) manual page

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aio_return - get return status of asynchronous I/O operation


#include <aio.h>

ssize_t aio_return(struct aiocb *aiocbp);


The aio_return() function returns the final return status for the asynchronous I/O request with control block pointed to by aiocbp.

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, write, or fsync request. Otherwise the return value is undefined. On error, the error value is returned.


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.

Conforming to


See Also

aio_cancel(3) , aio_error(3) , aio_fsync(3) , aio_read(3) , aio_suspend(3) , aio_write(3)

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