SIMPLE SOLUTIONS

AIO_CANCEL(2FREEBSD) - Linux man page online | System calls

Cancel an outstanding asynchronous I/O operation (REALTIME).

Chapter
January 19, 2000
AIO_CANCEL(2) BSD System Calls Manual AIO_CANCEL(2)

NAME

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

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <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 associ‐ ated 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

The aio_cancel() system call is expected to conform to the IEEE Std 1003.1 (“POSIX.1”) stan‐ dard.

HISTORY

The aio_cancel() system call first appeared in FreeBSD 3.0. The first functional implemen‐ tation of aio_cancel() appeared in FreeBSD 4.0.

AUTHORS

This manual page was originally written by Wes Peters <@softweyr.com>. Christopher M Sedore <@maxwell.syr.edu> updated it when aio_cancel() was implemented for FreeBSD 4.0.
BSD January 19, 2000 BSD
This manual Reference Other manuals
aio_cancel(2freebsd) referred by aio(4freebsd) | aio_error(2freebsd) | aio_fsync(2freebsd) | aio_mlock(2freebsd) | aio_read(2freebsd) | aio_return(2freebsd) | aio_suspend(2freebsd) | aio_waitcomplete(2freebsd) | aio_write(2freebsd)
refer to aio(4freebsd) | aio_error(2freebsd) | aio_read(2freebsd) | aio_return(2freebsd) | aio_suspend(2freebsd) | aio_write(2freebsd)
Download raw manual
Index BSD System Calls Manual (+360) BSD (+3984) № 2 (+877)
Go top