17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5ec6bbcf8Sraf * Common Development and Distribution License (the "License"). 6ec6bbcf8Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21ec6bbcf8Sraf 227c478bd9Sstevel@tonic-gate /* 23ec6bbcf8Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 30*7257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 32*7257d1b4Sraf #pragma weak _cuserid = cuserid 33*7257d1b4Sraf 34*7257d1b4Sraf #include "lint.h" 357c478bd9Sstevel@tonic-gate #include <stdio.h> 367c478bd9Sstevel@tonic-gate #include <pwd.h> 377c478bd9Sstevel@tonic-gate #include <string.h> 387c478bd9Sstevel@tonic-gate #include <stdlib.h> 397c478bd9Sstevel@tonic-gate #include <unistd.h> 40ec6bbcf8Sraf #include <pthread.h> 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate static char res[L_cuserid]; 437c478bd9Sstevel@tonic-gate 447c478bd9Sstevel@tonic-gate char * 457c478bd9Sstevel@tonic-gate cuserid(char *s) 467c478bd9Sstevel@tonic-gate { 477c478bd9Sstevel@tonic-gate struct passwd *pw; 487c478bd9Sstevel@tonic-gate struct passwd pwd; 497c478bd9Sstevel@tonic-gate char buffer[BUFSIZ]; 507c478bd9Sstevel@tonic-gate char utname[L_cuserid]; 517c478bd9Sstevel@tonic-gate char *p; 52ec6bbcf8Sraf int cancel_state; 53ec6bbcf8Sraf 54ec6bbcf8Sraf /* 55ec6bbcf8Sraf * The UNIX98 Posix conformance test suite requires 56ec6bbcf8Sraf * cuserid() to not be a cancellation point. 57ec6bbcf8Sraf */ 58ec6bbcf8Sraf (void) pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cancel_state); 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate if (s == NULL) 617c478bd9Sstevel@tonic-gate s = res; 62ec6bbcf8Sraf if ((p = getlogin_r(utname, L_cuserid)) != NULL) { 63ec6bbcf8Sraf (void) strlcpy(s, p, L_cuserid); 64ec6bbcf8Sraf } else if ((pw = getpwuid_r(getuid(), &pwd, buffer, BUFSIZ)) != NULL) { 65ec6bbcf8Sraf (void) strlcpy(s, pw->pw_name, L_cuserid); 66ec6bbcf8Sraf } else { 677c478bd9Sstevel@tonic-gate *s = '\0'; 68ec6bbcf8Sraf s = NULL; 69ec6bbcf8Sraf } 70ec6bbcf8Sraf 71ec6bbcf8Sraf (void) pthread_setcancelstate(cancel_state, NULL); 72ec6bbcf8Sraf return (s); 737c478bd9Sstevel@tonic-gate } 74