aio_return2
Retrieve return status of asynchronous i/o operation (realtime)
Usage
#include <aio.h>
ssize_t
aio_return(struct aiocb *iocb);
Library
Standard C Library (libc, -lc)
Overview
The aio_return() system call returns the final status of the asynchronous I/O request associated with the structure pointed to by iocb.
The 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_error) 2 returns something other than EINPROGRESS).
Return values
If the asynchronous I/O request has completed, the status is returned as described in read(2), readv(2), write(2), writev(2), or fsync(2). Otherwise, aio_return() returns -1 and sets errno to indicate the error condition.
Errors
The aio_return() system call will fail if:
- [EINVAL]
-
The iocb argument does not reference a completed asynchronous I/O request.
- [EINVAL]
-
The I/O operation was submitted with
lio_listio(), and the value of the aio_lio_opcode is invalid.
Releases
74 releases since FreeBSD 3.3-RELEASE; the text changed 41 times.