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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#pragma weak cuserid = _cuserid
#include "synonyms.h"
#include <stdio.h>
#include <pwd.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
static char res[L_cuserid];
char *
cuserid(char *s)
{
struct passwd *pw;
struct passwd pwd;
char buffer[BUFSIZ];
char utname[L_cuserid];
char *p;
int cancel_state;
/*
* The UNIX98 Posix conformance test suite requires
* cuserid() to not be a cancellation point.
*/
(void) pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cancel_state);
if (s == NULL)
s = res;
if ((p = getlogin_r(utname, L_cuserid)) != NULL) {
(void) strlcpy(s, p, L_cuserid);
} else if ((pw = getpwuid_r(getuid(), &pwd, buffer, BUFSIZ)) != NULL) {
(void) strlcpy(s, pw->pw_name, L_cuserid);
} else {
*s = '\0';
s = NULL;
}
(void) pthread_setcancelstate(cancel_state, NULL);
return (s);
}
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