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25 .\" $FreeBSD: src/lib/libc/sys/aio_cancel.2,v 1.5.2.6 2001/12/14 18:34:00 ru Exp $
32 .Nd cancel an outstanding asynchronous I/O operation (REALTIME)
38 .Fn aio_cancel "int fildes" "struct aiocb * iocb"
42 function cancels the outstanding asynchronous
43 I/O request for the file descriptor specified in
47 is specified, only that specific asynchronous I/O request is cancelled.
49 Normal asynchronous notification occurs for cancelled requests.
50 Requests complete with an error result of
55 function does not cancel asynchronous I/O requests for raw disk devices.
58 function will always return
60 for file descriptors associated with raw disk devices.
64 function returns -1 to indicate an error, or one of the following:
66 .It Bq Dv AIO_CANCELED
67 All outstanding requests meeting the criteria specified were cancelled.
68 .It Bq Dv AIO_NOTCANCELED
69 Some requests were not cancelled, status for the requests should be
73 All of the requests meeting the criteria have finished.
82 is an invalid file descriptor.
93 function is expected to conform to the
99 function first appeared in
101 The first functional implementation of
107 This manual page was originally written by
108 .An Wes Peters Aq Mt wes@softweyr.com .
109 .An Christopher M Sedore Aq Mt cmsedore@maxwell.syr.edu