107 lines
2.9 KiB
Groff
107 lines
2.9 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" Copyright (c) 2001 Alexander Langer
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" %FreeBSD: src/share/man/man9/DEV_MODULE.9,v 1.4 2001/12/26 23:14:04 davidc Exp %
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.\"
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.\" $FreeBSD$
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.Dd March 11, 2001
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.Dt DEV_MODULE 9
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.Os
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.Sh 名称
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.Nm DEV_MODULE
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.Nd デバイスドライバモジュール宣言マクロ
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.Sh 書式
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.In sys/param.h
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.In sys/kernel.h
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.In sys/module.h
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.In sys/conf.h
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.Fn DEV_MODULE "name" "modeventhand_t evh" "void *arg"
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.Sh 解説
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.Fn DEV_MODULE
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マクロはデバイスドライバカーネルモジュールを宣言します。
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これは
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.Vt moduledata_t
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構造体を埋めて、それから
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.Fn DECLARE_MODULE
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を正しい引数で呼び出します。ここで、
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.Fa name
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はモジュール名で、
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.Fa ( arg
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を引数として持つ)
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.Fa evh
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はそのモジュールのためのイベントハンドラです (詳細については
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.Xr DECLARE_MODULE 9
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を参照)。
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イベントハンドラはロード時に
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.Fn make_dev
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でデバイスを作成し、アンロードされる時に
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.Fn destroy_dev
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でそのデバイスを破壊することを、期待されています。
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.Sh 使用例
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.Bd -literal
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#include <sys/module.h>
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#include <sys/conf.h>
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static struct cdevsw foo_devsw = { ... };
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static dev_t sdev;
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static int
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foo_load(module_t mod, int cmd, void *arg)
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{
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int err = 0;
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switch (cmd) {
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case MOD_LOAD:
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sdev = make_dev(&foo_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "foo");
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break; /* 成功 */
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case MOD_UNLOAD:
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case MOD_SHUTDOWN:
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destroy_dev(sdev);
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break; /* 成功 */
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default:
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err = EINVAL;
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break;
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}
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return(err);
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}
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DEV_MODULE(foo, foo_load, NULL);
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.Ed
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.Sh 関連項目
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.Xr DECLARE_MODULE 9 ,
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.Xr destroy_dev 9 ,
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.Xr make_dev 9 ,
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.Xr module 9
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.Sh 作者
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このマニュアルページは
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.An Alexander Langer Aq alex@FreeBSD.org
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が書きました。
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