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[FreeBSD/releng/9.2.git] / tools / regression / priv / priv_sysctl_write.c
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  * $FreeBSD$
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
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
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
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
125 priv_sysctl_write_cleanup(int asroot, int injail, struct test *test)
126 {
127
128 }