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 * $FreeBSD: stable/9/tools/regression/priv/priv_sysctl_write.c 172106 2007-09-09 23:08:39Z rwatson $
31 */
32
33 /*
34 * Two privileges exist for writing sysctls -- one for sysctls writable only
35 * outside of jail (PRIV_SYSCTL_WRITE) and one for those also writable inside
36 * jail (PRIV_SYSCTL_WRITEJAIL).
37 *
38 * Test the prior by attempting to write to kern.domainname, and the latter
39 * by attempting to write to kern.hostname.
40 */
41
42 #include <sys/types.h>
43 #include <sys/sysctl.h>
44
45 #include <err.h>
46 #include <errno.h>
47 #include <string.h>
48 #include <unistd.h>
49
50 #include "main.h"
51
52 #define KERN_HOSTNAME_STRING "kern.hostname"
53 #define KERN_DOMAINNAME_STRING "kern.domainname"
54
55 static char stored_hostname[1024];
56 static char stored_domainname[1024];
57
58 int
priv_sysctl_write_setup(int asroot,int injail,struct test * test)59 priv_sysctl_write_setup(int asroot, int injail, struct test *test)
60 {
61 size_t len;
62 int error;
63
64 len = sizeof(stored_hostname);
65 error = sysctlbyname(KERN_HOSTNAME_STRING, stored_hostname, &len,
66 NULL, 0);
67 if (error) {
68 warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")",
69 KERN_HOSTNAME_STRING);
70 return (-1);
71 }
72
73 len = sizeof(stored_hostname);
74 error = sysctlbyname(KERN_DOMAINNAME_STRING, stored_domainname, &len,
75 NULL, 0);
76 if (error) {
77 warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")",
78 KERN_DOMAINNAME_STRING);
79 return (-1);
80 }
81
82 return (0);
83 }
84
85 void
priv_sysctl_write(int asroot,int injail,struct test * test)86 priv_sysctl_write(int asroot, int injail, struct test *test)
87 {
88 int error;
89
90 error = sysctlbyname(KERN_DOMAINNAME_STRING, NULL, NULL,
91 stored_domainname, strlen(stored_domainname));
92 if (asroot && injail)
93 expect("priv_sysctl_write(asroot, injail)", error, -1,
94 EPERM);
95 if (asroot && !injail)
96 expect("priv_sysctl_write(asroot, !injail)", error, 0, 0);
97 if (!asroot && injail)
98 expect("priv_sysctl_write(!asroot, injail)", error, -1,
99 EPERM);
100 if (!asroot && !injail)
101 expect("priv_sysctl_write(!asroot, !injail)", error, -1,
102 EPERM);
103 }
104
105 void
priv_sysctl_writejail(int asroot,int injail,struct test * test)106 priv_sysctl_writejail(int asroot, int injail, struct test *test)
107 {
108 int error;
109
110 error = sysctlbyname(KERN_HOSTNAME_STRING, NULL, NULL,
111 stored_hostname, strlen(stored_hostname));
112 if (asroot && injail)
113 expect("priv_sysctl_writejail(asroot, injail)", error, 0, 0);
114 if (asroot && !injail)
115 expect("priv_sysctl_writejail(asroot, !injail)", error, 0, 0);
116 if (!asroot && injail)
117 expect("priv_sysctl_writejail(!asroot, injail)", error, -1,
118 EPERM);
119 if (!asroot && !injail)
120 expect("priv_sysctl_writejail(!asroot, !injail)", error, -1,
121 EPERM);
122 }
123
124 void
priv_sysctl_write_cleanup(int asroot,int injail,struct test * test)125 priv_sysctl_write_cleanup(int asroot, int injail, struct test *test)
126 {
127
128 }
129