xref: /freebsd/tools/regression/priv/priv_kenv_set.c (revision f81cdf24ba5436367377f7c8e8f51f6df2a75ca7)
1 /*-
2  * Copyright (c) 2006 nCircle Network Security, Inc.
3  * Copyright (c) 2007 Robert N. M. Watson
4  * All rights reserved.
5  *
6  * This software was developed by Robert N. M. Watson for the TrustedBSD
7  * Project under contract to nCircle Network Security, Inc.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY,
22  * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
24  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
25  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
26  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 /*
32  * Test that setting a kernel environment variable requires privilege.
33  */
34 
35 #include <sys/types.h>
36 
37 #include <err.h>
38 #include <errno.h>
39 #include <kenv.h>
40 #include <string.h>
41 #include <unistd.h>
42 
43 #include "main.h"
44 
45 int
46 priv_kenv_set_setup(int asroot, int injail, struct test *test)
47 {
48 
49 	(void)kenv(KENV_UNSET, KENV_VAR_NAME, NULL, 0);
50 	return (0);
51 }
52 
53 void
54 priv_kenv_set(int asroot, int injail, struct test *test)
55 {
56 	int error;
57 
58 	error = kenv(KENV_SET, KENV_VAR_NAME, KENV_VAR_VALUE, KENV_VAR_LEN);
59 	if (asroot && injail)
60 		expect("priv_kenv_set(asroot, injail)", error, -1, EPERM);
61 	if (asroot && !injail)
62 		expect("priv_kenv_set(asroot, !injail)", error, 0, 0);
63 	if (!asroot && injail)
64 		expect("priv_kenv_set(!asroot, injail)", error, -1, EPERM);
65 	if (!asroot && !injail)
66 		expect("priv_kenv_set(!asroot, !injail)", error, -1, EPERM);
67 }
68 
69 void
70 priv_kenv_set_cleanup(int asroot, int injail, struct test *test)
71 {
72 
73 	(void)kenv(KENV_UNSET, KENV_VAR_NAME, NULL, 0);
74 }
75