/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */


#ident  "%Z%%M% %I%     %E% SMI"       /* SVr4.0 1.4 */

#include        <sys/types.h>
#include        <stdio.h>
#include        <grp.h>
#include        <users.h>
#include        <sys/param.h>
#include        <userdefs.h>

/*
        MAXUID should be in param.h; if it isn't,
        try for UID_MAX in limits.h
*/
#ifndef MAXUID
#include        <limits.h>
#define MAXUID  UID_MAX
#endif

struct group *getgrgid();

/*  validate a GID */
int
valid_gid( gid, gptr )
gid_t gid;
struct group **gptr;
{
        register struct group *t_gptr;

        if( gid < 0 ) return( INVALID );

        if( gid > MAXUID ) return( TOOBIG );

        if( t_gptr = getgrgid( gid ) ) {
                if( gptr ) *gptr = t_gptr;
                return( NOTUNIQUE );
        }

        if( gid <= DEFGID ) {
                if( gptr ) *gptr = getgrgid( gid );
                return( RESERVED );
        }

        return( UNIQUE );
}