Copyright (c) 1999 Softweyr LLC. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or othe...
NAMEaio_return - retrieve return status of asynchronous I/O operation (REALTIME)
SYNOPSISIn aio.h Ft int Fn aio_return struct aiocb *iocb
DESCRIPTIONThe Fn aio_return system call returns the final status of the asynchronous I/O request associated with the structure pointed to by Fa iocb .
The Fn aio_return system call should only be called once, to obtain the final status of an asynchronous I/O operation once it has completed (aio_error2 returns something other than Er EINPROGRESS ) .
RETURN VALUESIf the asynchronous I/O request has completed, the status is returned as described in read(2), write(2), or fsync(2). Otherwise, Fn aio_return returns -1 and sets errno to indicate the error condition.
ERRORSThe Fn aio_return system call will fail if:
- Bq Er EINVAL
- The Fa iocb argument does not reference a completed asynchronous I/O request.