2 * Copyright (c) 2006 nCircle Network Security, Inc.
3 * Copyright (c) 2007 Robert N. M. Watson
6 * This software was developed by Robert N. M. Watson for the TrustedBSD
7 * Project under contract to nCircle Network Security, Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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.
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).
38 * Test the prior by attempting to write to kern.domainname, and the latter
39 * by attempting to write to kern.hostname.
42 #include <sys/types.h>
43 #include <sys/sysctl.h>
52 #define KERN_HOSTNAME_STRING "kern.hostname"
53 #define KERN_DOMAINNAME_STRING "kern.domainname"
55 static char stored_hostname[1024];
56 static char stored_domainname[1024];
59 priv_sysctl_write_setup(int asroot, int injail, struct test *test)
64 len = sizeof(stored_hostname);
65 error = sysctlbyname(KERN_HOSTNAME_STRING, stored_hostname, &len,
68 warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")",
69 KERN_HOSTNAME_STRING);
73 len = sizeof(stored_hostname);
74 error = sysctlbyname(KERN_DOMAINNAME_STRING, stored_domainname, &len,
77 warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")",
78 KERN_DOMAINNAME_STRING);
86 priv_sysctl_write(int asroot, int injail, struct test *test)
90 error = sysctlbyname(KERN_DOMAINNAME_STRING, NULL, NULL,
91 stored_domainname, strlen(stored_domainname));
93 expect("priv_sysctl_write(asroot, injail)", error, -1,
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,
100 if (!asroot && !injail)
101 expect("priv_sysctl_write(!asroot, !injail)", error, -1,
106 priv_sysctl_writejail(int asroot, int injail, struct test *test)
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,
119 if (!asroot && !injail)
120 expect("priv_sysctl_writejail(!asroot, !injail)", error, -1,
125 priv_sysctl_write_cleanup(int asroot, int injail, struct test *test)