1.\"- 2.\" Copyright (c) 2002 Dag-Erling Co�dan Sm�rgrav 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. The name of the author may not be used to endorse or promote products 14.\" derived from this software without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $FreeBSD$ 29.\" 30.Dd October 24, 2002 31.Dt AIO 4 32.Os 33.Sh NAME 34.Nm aio 35.Nd asynchronous I/O 36.Sh SYNOPSIS 37To link into the kernel: 38.Cd "options VFS_AIO" 39.Pp 40To load as a kernel loadable module: 41.Dl kldload aio 42.Sh DESCRIPTION 43The 44.Nm 45facility provides system calls for asynchronous I/O. 46It is available both as a kernel option for static inclusion and as a 47dynamic kernel module. 48.Sh SEE ALSO 49.Xr aio_cancel 2 , 50.Xr aio_error 2 , 51.Xr aio_read 2 , 52.Xr aio_return 2 , 53.Xr aio_suspend 2 , 54.Xr aio_waitcomplete 2 , 55.Xr aio_write 2 , 56.Xr lio_listio 2 , 57.Xr config 8 , 58.Xr kldload 8 , 59.Xr kldunload 8 60.Sh HISTORY 61The 62.Nm 63facility appeared as a kernel option in 64.Fx 3.0 . 65The 66.Nm 67kernel module appeared in 68.Fx 5.0 . 69