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 write to the system extended attribute
33 * namespace.
34 */
35
36 #include <sys/types.h>
37 #include <sys/extattr.h>
38
39 #include <err.h>
40 #include <errno.h>
41 #include <string.h>
42 #include <unistd.h>
43
44 #include "main.h"
45
46 #define EA_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
47 #define EA_NAME "test"
48 #define EA_DATA "test"
49 #define EA_SIZE strlen(EA_DATA)
50
51 static char fpath[1024];
52 static int fpath_initialized;
53
54 int
priv_vfs_extattr_system_setup(int asroot,int injail,struct test * test)55 priv_vfs_extattr_system_setup(int asroot, int injail, struct test *test)
56 {
57
58 /*
59 * Set file perms so that discretionary access control would grant
60 * write rights on non-system EAs on the file.
61 */
62 setup_file("priv_vfs_extattr_system_setup: fpath", fpath, UID_ROOT,
63 GID_WHEEL, 0666);
64 fpath_initialized = 1;
65 return (0);
66 }
67
68 void
priv_vfs_extattr_system(int asroot,int injail,struct test * test)69 priv_vfs_extattr_system(int asroot, int injail, struct test *test)
70 {
71 ssize_t ret;
72 int error;
73
74 ret = extattr_set_file(fpath, EA_NAMESPACE, EA_NAME, EA_DATA,
75 EA_SIZE);
76 if (ret < 0)
77 error = -1;
78 else if (ret == EA_SIZE)
79 error = 0;
80 else
81 err(-1, "priv_vfs_extattr_system: set returned %zd", ret);
82 if (asroot && injail)
83 expect("priv_vfs_extattr_system(asroot, injail)", error, -1,
84 EPERM);
85 if (asroot && !injail)
86 expect("priv_vfs_extattr_system(asroot, !injail)", error, 0,
87 0);
88 if (!asroot && injail)
89 expect("priv_vfs_extattr_system(!asroot, injail)", error, -1,
90 EPERM);
91 if (!asroot && !injail)
92 expect("priv_vfs_extattr_system(!asroot, !injail)", error,
93 -1, EPERM);
94 }
95
96 void
priv_vfs_extattr_system_cleanup(int asroot,int injail,struct test * test)97 priv_vfs_extattr_system_cleanup(int asroot, int injail, struct test *test)
98 {
99
100 if (fpath_initialized) {
101 (void)unlink(fpath);
102 fpath_initialized = 0;
103 }
104 }
105