84 lines
2.7 KiB
Groff
84 lines
2.7 KiB
Groff
.\"
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.\" Copyright (c) 1995 Joerg Wunsch
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.\"
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.\" 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, 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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Joerg Wunsch
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.\" 4. The name of the developer may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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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/lib/libcompat/4.4/cuserid.3,v 1.8.2.6 2001/12/17 10:08:29 ru Exp %
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.\"
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.\" $FreeBSD$
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.Dd April 10, 1995
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.Os
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.Dt CUSERID 3
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.Sh 名称
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.Nm cuserid
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.Nd 有効な UID に対応するユーザ名を得る
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.Sh ライブラリ
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.Lb libcompat
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.Sh 書式
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.In stdio.h
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.Ft char *
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.Fn cuserid "char *s"
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.Sh 解説
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.Bf -symbolic
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.Fn cuserid
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関数は
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.Xr getpwuid 3
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によって旧式なものになりました。
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.Ef
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.Pp
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関数
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.Fn cuserid
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は、現在のプロセスの有効な
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UID
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に対応するユーザ名を取得します。引数
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.Fa s
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が NULL でない場合、名前は、それが指しているバッファに
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コピーされ、そのアドレスが返されます。このバッファは少なくとも
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.Em L_cuserid
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キャラクタ用の空間を準備する必要があります。
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L_cuuserid 定数は
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.Aq Pa stdio.h
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内に定義されます。
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.Pp
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.Fa s
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が NULL の場合、内部配列が使用され、そのアドレスが返されます。
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.Sh 戻り値
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.Fn cuserid
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は、名前が保存された配列のアドレスを返します。
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.Pp
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現在のプロセスの有効な
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UID
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に対応する名前が見つからない場合は、NULL ポインタが返されるか、または
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(s が NULL でない場合)
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バッファ
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.Fa s
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がヌルストリングで埋められるかのどちらかです。
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.Sh 関連項目
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.Xr geteuid 2 ,
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.Xr getpwuid 3
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