xref: /onnv-gate/usr/src/cmd/acct/lib/uidtonam.c (revision 428:a261479c3dbd)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
70Sstevel@tonic-gate  * with the License.
80Sstevel@tonic-gate  *
90Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate  * See the License for the specific language governing permissions
120Sstevel@tonic-gate  * and limitations under the License.
130Sstevel@tonic-gate  *
140Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate  *
200Sstevel@tonic-gate  * CDDL HEADER END
210Sstevel@tonic-gate  */
220Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
230Sstevel@tonic-gate /*	  All Rights Reserved  	*/
240Sstevel@tonic-gate 
25*428Ssl108498 /*
26*428Ssl108498  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
27*428Ssl108498  * Use is subject to license terms.
28*428Ssl108498  */
29*428Ssl108498 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.6	*/
300Sstevel@tonic-gate /*
310Sstevel@tonic-gate  * convert uid to login name; interface to getpwuid that keeps up to USIZE1
320Sstevel@tonic-gate  * names to avoid unnecessary accesses to passwd file
330Sstevel@tonic-gate  * returns ptr to NSZ-byte name (not necessarily null-terminated)
340Sstevel@tonic-gate  * returns ptr to "?" if cannot convert
350Sstevel@tonic-gate  */
360Sstevel@tonic-gate 
370Sstevel@tonic-gate #include <stdio.h>
380Sstevel@tonic-gate #include <sys/types.h>
390Sstevel@tonic-gate #include <sys/param.h>
400Sstevel@tonic-gate #include "acctdef.h"
410Sstevel@tonic-gate #include <pwd.h>
420Sstevel@tonic-gate 
43*428Ssl108498 static int usize1;
440Sstevel@tonic-gate static struct ulist {
450Sstevel@tonic-gate 	char	uname[NSZ];
460Sstevel@tonic-gate 	uid_t	uuid;
470Sstevel@tonic-gate } ul[USIZE1];
480Sstevel@tonic-gate 
490Sstevel@tonic-gate char *strncpy();
500Sstevel@tonic-gate 
510Sstevel@tonic-gate char *
uidtonam(uid)520Sstevel@tonic-gate uidtonam(uid)
530Sstevel@tonic-gate uid_t	uid;
540Sstevel@tonic-gate {
550Sstevel@tonic-gate 	register struct ulist *up;
560Sstevel@tonic-gate 	struct passwd *getpwuid();
570Sstevel@tonic-gate 	register struct passwd *pp;
580Sstevel@tonic-gate 
590Sstevel@tonic-gate 	for (up = ul; up < &ul[usize1]; up++)
600Sstevel@tonic-gate 		if (uid == up->uuid)
610Sstevel@tonic-gate 			return(up->uname);
620Sstevel@tonic-gate 	setpwent();
630Sstevel@tonic-gate 	if ((pp = getpwuid(uid)) == NULL)
640Sstevel@tonic-gate 		return("?");
650Sstevel@tonic-gate 	else {
660Sstevel@tonic-gate 		if (usize1 < USIZE1) {
670Sstevel@tonic-gate 			up->uuid = uid;
680Sstevel@tonic-gate 			CPYN(up->uname, pp->pw_name);
690Sstevel@tonic-gate 			usize1++;
700Sstevel@tonic-gate 		}
710Sstevel@tonic-gate 		return(pp->pw_name);
720Sstevel@tonic-gate 	}
730Sstevel@tonic-gate }
74