8a72894489
Sync with the original version. Unify some japanese words. Submitted by: kano@na.rim.or.jp
78 lines
2.5 KiB
Groff
78 lines
2.5 KiB
Groff
.\"
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.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.
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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(s), this list of conditions and the following disclaimer as
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.\" the first lines of this file unmodified other than the possible
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.\" addition of one or more copyright notices.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice(s), 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 COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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.\" DAMAGE.
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.\"
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.\" %FreeBSD: src/share/man/man9/device_ids.9,v 1.3 2004/06/22 20:18:15 le Exp %
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.\"
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.\" $FreeBSD$
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.Dd June 22, 2004
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.Dt DEVICE_IDS 9
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.Os
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.Sh 名称
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.Nm device_ids ,
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.Nm major ,
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.Nm minor ,
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.Nm umajor ,
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.Nm uminor
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.Nd デバイス ID の計算
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.Sh 書式
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.In sys/types.h
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.In sys/systm.h
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.Ft int
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.Fn major "struct cdev *dev"
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.Ft int
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.Fn minor "struct cdev *dev"
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.Ft int
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.Fn umajor "dev_t id"
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.Ft int
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.Fn uminor "dev_t id"
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.Sh 解説
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.Nm
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ファミリの関数は、ローデバイスの ID である
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.Fa id
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またはデバイス構造体へのポインタである
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.Fa dev
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をとり、要求されたメジャーまたはマイナデバイス ID の整数値を返します。
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.Pp
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実際のメジャーおよびマイナデバイス ID はローデバイス ID から
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マスクされた値です。
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実際のメジャーおよびマイナ ID を決定するために使用される計算上の詳細は、
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.Pa kern_conf.c
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の実際のソースを参照して下さい。
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.Sh 戻り値
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0 より大きくかつ
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.Dv NUMCDEVSW
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より小さい整数値です。
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そのデバイスが無効である場合には、
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.Fn major
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および
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.Fn minor
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は
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.Dv NODEV
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を返します。
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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 Chad David Aq davidc@acns.ab.ca
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が書きました。
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