xref: /titanic_50/usr/src/cmd/acct/lib/uidtonam.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23*7c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
24*7c478bd9Sstevel@tonic-gate 
25*7c478bd9Sstevel@tonic-gate 
26*7c478bd9Sstevel@tonic-gate #ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.6	*/
27*7c478bd9Sstevel@tonic-gate /*
28*7c478bd9Sstevel@tonic-gate  * convert uid to login name; interface to getpwuid that keeps up to USIZE1
29*7c478bd9Sstevel@tonic-gate  * names to avoid unnecessary accesses to passwd file
30*7c478bd9Sstevel@tonic-gate  * returns ptr to NSZ-byte name (not necessarily null-terminated)
31*7c478bd9Sstevel@tonic-gate  * returns ptr to "?" if cannot convert
32*7c478bd9Sstevel@tonic-gate  */
33*7c478bd9Sstevel@tonic-gate 
34*7c478bd9Sstevel@tonic-gate #include <stdio.h>
35*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
36*7c478bd9Sstevel@tonic-gate #include <sys/param.h>
37*7c478bd9Sstevel@tonic-gate #include "acctdef.h"
38*7c478bd9Sstevel@tonic-gate #include <pwd.h>
39*7c478bd9Sstevel@tonic-gate 
40*7c478bd9Sstevel@tonic-gate static	usize1;
41*7c478bd9Sstevel@tonic-gate static struct ulist {
42*7c478bd9Sstevel@tonic-gate 	char	uname[NSZ];
43*7c478bd9Sstevel@tonic-gate 	uid_t	uuid;
44*7c478bd9Sstevel@tonic-gate } ul[USIZE1];
45*7c478bd9Sstevel@tonic-gate 
46*7c478bd9Sstevel@tonic-gate char *strncpy();
47*7c478bd9Sstevel@tonic-gate 
48*7c478bd9Sstevel@tonic-gate char *
49*7c478bd9Sstevel@tonic-gate uidtonam(uid)
50*7c478bd9Sstevel@tonic-gate uid_t	uid;
51*7c478bd9Sstevel@tonic-gate {
52*7c478bd9Sstevel@tonic-gate 	register struct ulist *up;
53*7c478bd9Sstevel@tonic-gate 	struct passwd *getpwuid();
54*7c478bd9Sstevel@tonic-gate 	register struct passwd *pp;
55*7c478bd9Sstevel@tonic-gate 
56*7c478bd9Sstevel@tonic-gate 	for (up = ul; up < &ul[usize1]; up++)
57*7c478bd9Sstevel@tonic-gate 		if (uid == up->uuid)
58*7c478bd9Sstevel@tonic-gate 			return(up->uname);
59*7c478bd9Sstevel@tonic-gate 	setpwent();
60*7c478bd9Sstevel@tonic-gate 	if ((pp = getpwuid(uid)) == NULL)
61*7c478bd9Sstevel@tonic-gate 		return("?");
62*7c478bd9Sstevel@tonic-gate 	else {
63*7c478bd9Sstevel@tonic-gate 		if (usize1 < USIZE1) {
64*7c478bd9Sstevel@tonic-gate 			up->uuid = uid;
65*7c478bd9Sstevel@tonic-gate 			CPYN(up->uname, pp->pw_name);
66*7c478bd9Sstevel@tonic-gate 			usize1++;
67*7c478bd9Sstevel@tonic-gate 		}
68*7c478bd9Sstevel@tonic-gate 		return(pp->pw_name);
69*7c478bd9Sstevel@tonic-gate 	}
70*7c478bd9Sstevel@tonic-gate }
71