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