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(2) 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, 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.

POSIX 1003.1-2003

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