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+.\"	$NetBSD: setgroups.2,v 1.19 2013/07/14 14:29:09 njoly Exp $
+.\"
+.\" Copyright (c) 1983, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setgroups.2	8.2 (Berkeley) 4/16/94
+.\"
+.Dd October 7, 2006
+.Dt SETGROUPS 2
+.Os
+.Sh NAME
+.Nm setgroups
+.Nd set group access list
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In sys/param.h
+.In unistd.h
+.Ft int
+.Fn setgroups "int ngroups" "const gid_t *gidset"
+.Sh DESCRIPTION
+.Fn setgroups
+sets the group access list of the current user process
+according to the array
+.Fa gidset .
+The parameter
+.Fa ngroups
+indicates the number of entries in the array and must be no
+more than
+.Brq Dv NGROUPS_MAX .
+.Pp
+Only the super-user may set new groups.
+.Pp
+This system call affects only secondary groups.
+.Sh RETURN VALUES
+A 0 value is returned on success, \-1 on error, with
+an error code stored in
+.Va errno .
+.Sh ERRORS
+The
+.Fn setgroups
+call will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value of
+.Fa ngroups
+is greater than
+.Brq Dv NGROUPS_MAX .
+.It Bq Er EPERM
+The caller is not the super-user.
+.It Bq Er EFAULT
+The address specified for
+.Fa gidset
+is outside the process
+address space.
+.El
+.Sh SEE ALSO
+.Xr getgroups 2 ,
+.Xr setegid 2 ,
+.Xr setgid 2 ,
+.Xr setregid 2 ,
+.Xr initgroups 3
+.Sh HISTORY
+The
+.Fn setgroups
+function call appeared in
+.Bx 4.2 .