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AIO_CANCEL (2) | System calls | Unix Manual Pages | :man▋

NAME

aio_cancel - cancel an outstanding asynchronous I/O operation (REALTIME)

CONTENTS

Library
Synopsis
Description
Restrictions
Return Values
Errors
See Also
Standards
History
Authors

LIBRARY


.Lb libc

SYNOPSIS


.In aio.h int aio_cancel "int fildes" "struct aiocb * iocb"

DESCRIPTION

The aio_cancel system call cancels the outstanding asynchronous I/O request for the file descriptor specified in fildes. If iocb 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.

RESTRICTIONS

The aio_cancel system call does not cancel asynchronous I/O requests for raw disk devices. The aio_cancel system call will always return AIO_NOTCANCELED for file descriptors associated with raw disk devices.

RETURN VALUES

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(2).
[AIO_ALLDONE]
All of the requests meeting the criteria have finished.

ERRORS

An error return from aio_cancel indicates:
[EBADF]
The fildes argument is an invalid file descriptor.

SEE ALSO

aio_error(2), aio_read(2), aio_return(2), aio_suspend(2), aio_write(2), aio(4)

STANDARDS

HISTORY

AUTHORS

 
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