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aio_return
AIO_RETURN(2) FreeBSD System Calls Manual AIO_RETURN(2)
NAME
aio_return -- retrieve return status of asynchronous I/O operation (REAL-
TIME)
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <aio.h>
int
aio_return(struct aiocb *iocb);
DESCRIPTION
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 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), write(2), or fsync(2). On failure, 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 an outstanding
asynchronous I/O request.
SEE ALSO
aio_cancel(2), aio_error(2), aio_suspend(2), aio_waitcomplete(2),
aio_write(2), fsync(2), read(2), write(2), aio(4)
STANDARDS
The aio_return() system call is expected to conform to the IEEE Std
1003.1 (``POSIX.1'') standard.
HISTORY
The aio_return() system call first appeared in FreeBSD 3.0.
AUTHORS
This manual page was written by Wes Peters <wesATsoftweyr.com>.
FreeBSD 6.2 June 2, 1999 FreeBSD 6.2
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