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 weak _cuserid = cuserid
317c478bd9Sstevel@tonic-gate
32*7257d1b4Sraf #include "lint.h"
337c478bd9Sstevel@tonic-gate #include <stdio.h>
347c478bd9Sstevel@tonic-gate #include <pwd.h>
357c478bd9Sstevel@tonic-gate #include <string.h>
367c478bd9Sstevel@tonic-gate #include <stdlib.h>
377c478bd9Sstevel@tonic-gate #include <unistd.h>
38ec6bbcf8Sraf #include <pthread.h>
397c478bd9Sstevel@tonic-gate
407c478bd9Sstevel@tonic-gate static char res[L_cuserid];
417c478bd9Sstevel@tonic-gate
427c478bd9Sstevel@tonic-gate char *
cuserid(char * s)437c478bd9Sstevel@tonic-gate cuserid(char *s)
447c478bd9Sstevel@tonic-gate {
457c478bd9Sstevel@tonic-gate struct passwd *pw;
467c478bd9Sstevel@tonic-gate struct passwd pwd;
477c478bd9Sstevel@tonic-gate char buffer[BUFSIZ];
487c478bd9Sstevel@tonic-gate char utname[L_cuserid];
497c478bd9Sstevel@tonic-gate char *p;
50ec6bbcf8Sraf int cancel_state;
51ec6bbcf8Sraf
52ec6bbcf8Sraf /*
53ec6bbcf8Sraf * The UNIX98 Posix conformance test suite requires
54ec6bbcf8Sraf * cuserid() to not be a cancellation point.
55ec6bbcf8Sraf */
56ec6bbcf8Sraf (void) pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cancel_state);
577c478bd9Sstevel@tonic-gate
587c478bd9Sstevel@tonic-gate if (s == NULL)
597c478bd9Sstevel@tonic-gate s = res;
60ec6bbcf8Sraf if ((p = getlogin_r(utname, L_cuserid)) != NULL) {
61ec6bbcf8Sraf (void) strlcpy(s, p, L_cuserid);
62ec6bbcf8Sraf } else if ((pw = getpwuid_r(getuid(), &pwd, buffer, BUFSIZ)) != NULL) {
63ec6bbcf8Sraf (void) strlcpy(s, pw->pw_name, L_cuserid);
64ec6bbcf8Sraf } else {
65ec6bbcf8Sraf *s = '\0';
66ec6bbcf8Sraf s = NULL;
67ec6bbcf8Sraf }
68ec6bbcf8Sraf
69ec6bbcf8Sraf (void) pthread_setcancelstate(cancel_state, NULL);
70ec6bbcf8Sraf return (s);
717c478bd9Sstevel@tonic-gate }
72