priv_vfs_setgid.c revision 172106 
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: head/tools/regression/priv/priv_vfs_setgid.c 172106 2007-09-09 23:08:39Z rwatson $
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
49static char fpath[1024];
50static int fpath_initialized;
51
52int
53priv_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
62int
63priv_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
73void
74priv_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
93void
94priv_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
113void
114priv_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