fc733ebccd
This section is based on catpages contributed by Mainichi Communications, Inc. Translated by: MYCOM team Converted by: Japanese Online Manual Project <man-jp@jp.FreeBSD.ORG> Submitted by: Kazuo Horikawa <k-horik@yk.rim.or.jp>
89 lines
3 KiB
Groff
89 lines
3 KiB
Groff
.\" Copyright (c) 1989, 1991, 1993
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.\" The Regents of the University of California. 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 the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER 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
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)pwcache.3 8.1 (Berkeley) 6/9/93
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.\"
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.Dd June 9, 1993
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.Dt PWCACHE 3
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.Os
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.Sh 名称
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.Nm pwcache
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.Nd パスワードエントリとグループエントリのキャッシュ
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.Sh 書式
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.Fd #include <stdlib.h>
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.Ft char *
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.Fn user_from_uid "unsigned long uid" "int nouser"
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.Ft char *
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.Fn group_from_gid "unsigned long gid" "int nogroup"
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.Sh 解説
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.Fn user_from_uid
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関数は、引数
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.Fa uid
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に関連するユーザ名を戻します。ユーザ名はキャッシュされるので、同じ
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.Fa uid
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で何度も呼び出す場合は、
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.Xr getpwuid 3
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を呼び出す必要はありません。
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.Fa uid
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にユーザが関連していない場合は、引数
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.Fa nouser
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が 0であれば、
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.Fa uid
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のストリング表現にポインタが戻されます。0以外である場合は
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.Dv NULL
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ポインタが戻されます。
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.Pp
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.Fn group_from_gid
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関数は、引数
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.Fa gid
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に関連するグループ名を戻します。グループ名はキャッシュされるので、同じ
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.Fa gid
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で何度も呼び出す場合は、
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.Xr getgrgid 3
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を呼び出す必要はありません。
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.Fa gid
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にグループが関連していない場合は、引数
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.Fa nogroup
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が 0であれば、
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.Fa gid
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のストリング表現にポインタが戻されます。0以外である場合は
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.Dv NULL
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ポインタが戻されます。
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.Sh 関連項目
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.Xr getgrgid 3 ,
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.Xr getpwuid 3
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.Sh 歴史
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.Fn user_from_uid
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関数と
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.Fn group_from_gid
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関数は、
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.Bx 4.4
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に最初に登場しました。
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