82 lines
2.9 KiB
Groff
82 lines
2.9 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993, 1994
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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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.\" @(#)setgroups.2 8.2 (Berkeley) 4/16/94
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.\"
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.Dd April 16, 1994
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.Dt SETGROUPS 2
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.Os BSD 4.2
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.Sh 名称
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.Nm setgroups
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.Nd グループ アクセス リストを設定する
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.Sh 書式
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.Fd #include <sys/param.h>
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.Fd #include <unistd.h>
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.Ft int
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.Fn setgroups "int ngroups" "const gid_t *gidset"
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.Sh 解説
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.Fn setgroups
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は、配列
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.Fa gidset
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に従って、現在のユーザプロセスのグループアクセスリストを設定します。
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パラメータ
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.Fa ngroups
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は、配列内のエントリの数を示し、
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.Ao Pa sys/param.h Ac
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内に定義されている値
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.Dv NGROUPS
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を超えてはいけません。
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.Pp
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スーパユーザだけが新しいグループを設定できます。
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.Sh 戻り値
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正常に完了すると値 0 が返されます。エラーがあったときは -1 が返され、
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エラーコードが
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.Va errno
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に保存されます。
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.Sh エラー
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.Fn setgroups
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呼び出しは次の場合に処理に失敗します。
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.Bl -tag -width Er
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.It Bq Er EPERM
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呼び出し側がスーパユーザではありません。
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.It Bq Er EFAULT
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.Fa gidset
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に指定されたアドレスは、
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プロセスに割り当てられたアドレス空間の範囲外を指しています。
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.El
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.Sh 関連項目
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.Xr getgroups 2 ,
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.Xr initgroups 3
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.Sh 歴史
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.Fn setgroups
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関数呼び出しは
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.Bx 4.2
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で登場しました。
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