xref: /titanic_41/usr/src/cmd/oamuser/lib/vuid.c (revision 74e20cfe817b82802b16fac8690dadcda76f54f5)
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
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