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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
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
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
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
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
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 }