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 * Test that privilege is required to set the sgid bit on a file with a group
35 * that isn't in the process credential. The file uid owner is set to the
36 * uid being tested with, as we are not interested in testing privileges
37 * associated with file ownership.
38 */
39
40 #include <sys/stat.h>
41
42 #include <err.h>
43 #include <errno.h>
44 #include <fcntl.h>
45 #include <unistd.h>
46
47 #include "main.h"
48
49 static char fpath[1024];
50 static int fpath_initialized;
51
52 int
priv_vfs_setgid_fowner_setup(int asroot,int injail,struct test * test)53 priv_vfs_setgid_fowner_setup(int asroot, int injail, struct test *test)
54 {
55
56 setup_file("priv_vfs_setgid_fowner: fpath", fpath, UID_OWNER,
57 GID_OWNER, 0600);
58 fpath_initialized = 1;
59 return (0);
60 }
61
62 int
priv_vfs_setgid_fother_setup(int asroot,int injail,struct test * test)63 priv_vfs_setgid_fother_setup(int asroot, int injail, struct test *test)
64 {
65
66 /* NOTE: owner uid, *other* gid. */
67 setup_file("priv_vfs_setgid_forther: fpath", fpath, UID_OWNER,
68 GID_OTHER, 0600);
69 fpath_initialized = 1;
70 return (0);
71 }
72
73 void
priv_vfs_setgid_fowner(int asroot,int injail,struct test * test)74 priv_vfs_setgid_fowner(int asroot, int injail, struct test *test)
75 {
76 int error;
77
78 error = chmod(fpath, 0600 | S_ISGID);
79 if (asroot && injail)
80 expect("priv_vfs_setgid_fowner(asroot, injail)", error, 0,
81 0);
82 if (asroot && !injail)
83 expect("priv_vfs_setgid_fowner(asroot, !injail)", error, 0,
84 0);
85 if (!asroot && injail)
86 expect("priv_vfs_setgid_fowner(!asroot, injail)", error, 0,
87 0);
88 if (!asroot && !injail)
89 expect("priv_vfs_setgid_fowner(!asroot, !injail)", error, 0,
90 0);
91 }
92
93 void
priv_vfs_setgid_fother(int asroot,int injail,struct test * test)94 priv_vfs_setgid_fother(int asroot, int injail, struct test *test)
95 {
96 int error;
97
98 error = chmod(fpath, 0600 | S_ISGID);
99 if (asroot && injail)
100 expect("priv_vfs_setgid_fother(asroot, injail)", error, 0,
101 0);
102 if (asroot && !injail)
103 expect("priv_vfs_setgid_fother(asroot, !injail)", error, 0,
104 0);
105 if (!asroot && injail)
106 expect("priv_vfs_setgid_fother(!asroot, injail)", error, -1,
107 EPERM);
108 if (!asroot && !injail)
109 expect("priv_vfs_setgid_fother(!asroot, !injail)", error, -1,
110 EPERM);
111 }
112
113 void
priv_vfs_setgid_cleanup(int asroot,int injail,struct test * test)114 priv_vfs_setgid_cleanup(int asroot, int injail, struct test *test)
115 {
116
117 if (fpath_initialized) {
118 (void)unlink(fpath);
119 fpath_initialized = 0;
120 }
121 }
122