| AIO_CANCEL(3) | Library Functions Manual | AIO_CANCEL(3) | 
aio_cancel —
#include <aio.h>
int
  
  aio_cancel(int
    fildes, struct aiocb *
    aiocbp);
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.
aio_cancel() system call returns -1 to indicate an
  error, or one of the following:
AIO_CANCELED]AIO_NOTCANCELED]AIO_ALLDONE]aio_cancel() indicates:
EBADF]aio_cancel() system call is expected to conform to
  the IEEE Std 1003.1-2001 (“POSIX.1”)
  standard.
aio_cancel() system call first appeared in
  NetBSD 5.0.
| May 17, 2010 | NetBSD 9.4 |