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AIO_CANCEL(3) BSD Library Functions Manual AIO_CANCEL(3)
aio_cancel -- cancel an outstanding asynchronous I/O operation (REALTIME)
POSIX Real-time Library (librt, -lrt)
aio_cancel(int fildes, struct aiocb * aiocbp);
The aio_cancel() system call cancels the outstanding asynchronous I/O request for the file
descriptor specified in fildes. If aiocbp is specified, only that specific asynchronous I/O
request is cancelled.
Normal asynchronous notification occurs for cancelled requests. Requests complete with an
error result of ECANCELED.
The aio_cancel() system call returns -1 to indicate an error, or one of the following:
[AIO_CANCELED] All outstanding requests meeting the criteria specified were cancelled.
[AIO_NOTCANCELED] Some requests were not cancelled, status for the requests should be
checked with aio_error(3).
[AIO_ALLDONE] All of the requests meeting the criteria have finished.
An error return from aio_cancel() indicates:
[EBADF] The fildes argument is an invalid file descriptor.
The aio_cancel() system call is expected to conform to the IEEE Std 1003.1-2001
The aio_cancel() system call first appeared in NetBSD 5.0.
BSD May 17, 2010 BSD
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