priv_proc_setlogin.c revision 162271 
1/*-
2 * Copyright (c) 2006 nCircle Network Security, Inc.
3 * All rights reserved.
4 *
5 * This software was developed by Robert N. M. Watson for the TrustedBSD
6 * Project under contract to nCircle Network Security, Inc.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY,
21 * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD: head/tools/regression/priv/priv_proc_setlogin.c 162271 2006-09-13 09:05:39Z rwatson $
30 */
31
32/*
33 * Test that privilege is required to call setlogin().  Do so by first
34 * querying with getlogin(), then setting the result back using setlogin(),
35 * at first with privilege, then without.
36 */
37
38#include <err.h>
39#include <errno.h>
40#include <unistd.h>
41
42#include "main.h"
43
44void
45priv_proc_setlogin(void)
46{
47	char *loginname;
48	int error;
49
50	assert_root();
51
52	loginname = getlogin();
53	if (loginname == NULL)
54		err(-1, "getlogin");
55
56	/*
57	 * First, with privilege.
58	 */
59	error = setlogin(loginname);
60	if (error)
61		err(-1, "setlogin(%s) as root", loginname);
62
63	/*
64	 * Then again, without privilege.
65	 */
66	set_euid(UID_OTHER);
67
68	error = setlogin(loginname);
69	if (error == 0)
70		errx(-1, "setlogin(%s) succeeded as !root", loginname);
71	if (errno != EPERM)
72		err(-1, "setlogin(%s) wrong errno %d", loginname, errno);
73}
74