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.\"     From: @(#)gethostname.3	8.1 (Berkeley) 6/4/93
.\"	%Id: getbootfile.3,v 1.5 1997/02/22 14:58:03 peter 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
.Sh 書式
.Fd #include <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たファイルのフルパス名を取り出し、そ
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
によって利用できます。
.Sh 戻り値
呼び出しが成功した場合はパス名を与えるストリングが返ります。失敗した場合は
null ポインタが返り、エラーコードがグローバルな位置の
.Va errno
に置かれます。
.Sh 関連項目
.Xr sysctl 3
.Sh バグ
起動時のカーネルに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ストリング
.Dq Pa /kernel
が返ります。
.Sh 歴史
.Fn getbootfile
関数呼び出しは
.Fx 2.0
で最初に登場しました。