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);
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.
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.
The aio_return() function is thread-safe.
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)
This
page is part of release 3.78 of the Linux man-pages project. A description
of the project, information about reporting bugs, and the latest version
of this page, can be found at http://www.kernel.org/doc/man-pages/.
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