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authorSergio Carlavilla Delgado <carlavilla@FreeBSD.org>2021-01-25 23:31:29 +0000
committerSergio Carlavilla Delgado <carlavilla@FreeBSD.org>2021-01-25 23:31:29 +0000
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treea5d768f9af4b55422fdf5b17064879ae1c7ce032 /documentation/manual-pages/ja/man3/getbootfile.3
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+.\" Copyright (c) 1983, 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" 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.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+.\"
+.\" From: @(#)gethostname.3 8.1 (Berkeley) 6/4/93
+.\" %FreeBSD: src/lib/libc/gen/getbootfile.3,v 1.6.2.3 2001/12/14 18:33:51 ru Exp %
+.\"
+.\" $FreeBSD$
+.Dd September 23, 1994
+.Dt GETBOOTFILE 3
+.Os
+.Sh 名称
+.Nm getbootfile
+.Nd カーネル起動ファイル名を取得する
+.Sh ライブラリ
+.Lb libc
+.Sh 書式
+.In paths.h
+.Ft const char *
+.Fn getbootfile void
+.Sh 解説
+.Fn getbootfile
+関数は、現在のカーネルがロードされてきた元のファイルのフルパス名を取り出し、
+そのフルパス名への静的ポインタを返します。
+この情報の読み込み/書き込みインタフェースは、
+.Xr sysctl 3
+MIB 変数
+.Dq Li kern.bootfile
+を介して利用できます。
+.Sh 戻り値
+呼び出しが成功した場合はパス名を与える文字列が返されます。
+失敗した場合はヌルポインタが返され、エラーコードがグローバルな位置にある
+.Va errno
+に入れられます。
+.Sh 関連項目
+.Xr sysctl 3
+.Sh バグ
+起動時にカーネルへこの情報を渡すように、起動ブロックが修正されていない場合は、
+実際の起動ファイル名の代わりに静的文字列
+.Dq Pa /kernel
+が返されます。
+.Sh 歴史
+.Fn getbootfile
+関数呼び出しは
+.Fx 2.0
+ではじめて登場しました。