cb5d1a9147
jpman project specific RCS keyword (jpman %Id) is obsolete, after manual entries are stored in freefall CVS repository. This old Id is useless and more worse it confuses users and bug reporters. So, this old Id is removed. Submitted by:jpman project <man-jp@jp.FreeBSD.org>
90 lines
3 KiB
Groff
90 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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.\" $FreeBSD$
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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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