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+.\" -*- nroff -*-
+.\"
+.\" Copyright (c) 1998 Doug Rabson
+.\"
+.\" All rights reserved.
+.\"
+.\" This program is free software.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" %FreeBSD: src/share/man/man9/device_enable.9,v 1.10 2003/10/23 06:19:45 hmp Exp %
+.\"
+.\" $FreeBSD$
+.Dd June 16, 1998
+.Dt DEVICE_ENABLE 9
+.Os
+.Sh 名称
+.Nm device_enable ,
+.Nm device_disable ,
+.Nm device_is_enabled
+.Nd デバイスの有効フラグの操作
+.Sh 書式
+.In sys/param.h
+.In sys/bus.h
+.Ft void
+.Fn device_enable "device_t dev"
+.Ft void
+.Fn device_disable "device_t dev"
+.Ft int
+.Fn device_is_enabled "device_t dev"
+.Sh 解説
+個々のデバイスは、結びつけられた有効フラグを持っています。
+デバイスは生成時にはデフォルトで有効になっていますが、(例えば、破壊的または
+時間を消費するプローブの試みを防ぐために) 無効にできます。
+デバイスを無効にするには
+.Fn device_disable
+を呼び出し、再度有効にするには
+.Fn device_enable
+を呼び出し、デバイスが有効かどうか確認するには
+.Fn device_is_enabled
+を呼び出します。
+.Sh 関連項目
+.Xr device 9
+.Sh 作者
+このマニュアルページは
+.An Doug Rabson
+が書きました。