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 1.2 */
27
28 #include <sys/types.h>
29 #include <stdio.h>
30 #include <pwd.h>
31 #include <userdefs.h>
32 #include <users.h>
33
34 #include <sys/param.h>
35
36 #ifndef MAXUID
37 #include <limits.h>
38 #define MAXUID UID_MAX
39 #endif
40
41 struct passwd *getpwuid();
42
43 int
valid_uid(uid,pptr)44 valid_uid( uid, pptr )
45 uid_t uid;
46 struct passwd **pptr;
47 {
48 register struct passwd *t_pptr;
49
50 if( uid <= 0 ) return( INVALID );
51 if( uid <= DEFRID ) {
52 if( pptr ) *pptr = getpwuid( uid );
53
54 return( RESERVED );
55 }
56
57 if( uid > MAXUID ) return( TOOBIG );
58
59 if( t_pptr = getpwuid( uid ) ) {
60 if( pptr ) *pptr = t_pptr;
61 return( NOTUNIQUE );
62 }
63
64 return( UNIQUE );
65 }
66