1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23 /* All Rights Reserved */
24
25
26 #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.4 */
27
28 #include <sys/types.h>
29 #include <stdio.h>
30 #include <grp.h>
31 #include <users.h>
32 #include <sys/param.h>
33 #include <userdefs.h>
34
35 /*
36 MAXUID should be in param.h; if it isn't,
37 try for UID_MAX in limits.h
38 */
39 #ifndef MAXUID
40 #include <limits.h>
41 #define MAXUID UID_MAX
42 #endif
43
44 struct group *getgrgid();
45
46 /* validate a GID */
47 int
valid_gid(gid,gptr)48 valid_gid( gid, gptr )
49 gid_t gid;
50 struct group **gptr;
51 {
52 register struct group *t_gptr;
53
54 if( gid < 0 ) return( INVALID );
55
56 if( gid > MAXUID ) return( TOOBIG );
57
58 if( t_gptr = getgrgid( gid ) ) {
59 if( gptr ) *gptr = t_gptr;
60 return( NOTUNIQUE );
61 }
62
63 if( gid <= DEFGID ) {
64 if( gptr ) *gptr = getgrgid( gid );
65 return( RESERVED );
66 }
67
68 return( UNIQUE );
69 }
70