IO_CANCEL(2) Linux Programmer's Manual IO_CANCEL(2)NAMEio_cancel - Cancel an outstanding asynchronous I/O operation
SYNOPSIS
#include <libaio.h>
long io_cancel (aio_context_t ctx_id, struct iocb *iocb,
struct io_event *result);
DESCRIPTIONio_cancel() attempts to cancel an asynchronous I/O operation previously
submitted with the io_submit system call. ctx_id is the AIO context ID
of the operation to be cancelled. If the AIO context is found, the
event will be cancelled and then copied into the memory pointed to by
result without being placed into the completion queue.
RETURN VALUEio_cancel() returns 0 on success; otherwise, it returns one of the er‐
rors listed in the "Errors" section.
ERRORS
EINVAL The AIO context specified by ctx_id is invalid.
EFAULT One of the data structures points to invalid data.
EAGAIN The iocb specified was not cancelled.
ENOSYS io_cancel() is not implemented on this architecture.
VERSIONS
The asynchronous I/O system calls first appeared in Linux 2.5, August
2002.
CONFORMING TOio_cancel() is Linux specific and should not be used in programs that
are intended to be portable.
SEE ALSOio_setup(2), io_destroy(2), io_getevents(2), io_submit(2).
NOTES
The asynchronous I/O system calls were written by Benjamin LaHaise.
AUTHOR
Kent Yoder.
Linux 2.4 2003-02-21 IO_CANCEL(2)