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 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.6 */ 30 /* 31 * convert uid to login name; interface to getpwuid that keeps up to USIZE1 32 * names to avoid unnecessary accesses to passwd file 33 * returns ptr to NSZ-byte name (not necessarily null-terminated) 34 * returns ptr to "?" if cannot convert 35 */ 36 37 #include <stdio.h> 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include "acctdef.h" 41 #include <pwd.h> 42 43 static int usize1; 44 static struct ulist { 45 char uname[NSZ]; 46 uid_t uuid; 47 } ul[USIZE1]; 48 49 char *strncpy(); 50 51 char * 52 uidtonam(uid) 53 uid_t uid; 54 { 55 register struct ulist *up; 56 struct passwd *getpwuid(); 57 register struct passwd *pp; 58 59 for (up = ul; up < &ul[usize1]; up++) 60 if (uid == up->uuid) 61 return(up->uname); 62 setpwent(); 63 if ((pp = getpwuid(uid)) == NULL) 64 return("?"); 65 else { 66 if (usize1 < USIZE1) { 67 up->uuid = uid; 68 CPYN(up->uname, pp->pw_name); 69 usize1++; 70 } 71 return(pp->pw_name); 72 } 73 } 74