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 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #pragma weak cuserid = _cuserid 34 35 #include "synonyms.h" 36 #include <stdio.h> 37 #include <pwd.h> 38 #include <string.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 42 static char res[L_cuserid]; 43 44 char * 45 cuserid(char *s) 46 { 47 struct passwd *pw; 48 struct passwd pwd; 49 char buffer[BUFSIZ]; 50 char utname[L_cuserid]; 51 char *p; 52 53 if (s == NULL) 54 s = res; 55 p = getlogin_r(utname, L_cuserid); 56 s[L_cuserid - 1] = '\0'; 57 if (p != NULL) 58 return (strncpy(s, p, L_cuserid - 1)); 59 pw = getpwuid_r(getuid(), &pwd, buffer, BUFSIZ); 60 if (pw != NULL) 61 return (strncpy(s, pw->pw_name, L_cuserid - 1)); 62 *s = '\0'; 63 return (NULL); 64 } 65