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 * Confirm that calls to fhopen() require non-jailed priilege. We create a
33 * temporary file and grab the file handle using getfh() before starting.
34 */
35
36 #include <sys/param.h>
37 #include <sys/mount.h>
38
39 #include <err.h>
40 #include <errno.h>
41 #include <fcntl.h>
42 #include <unistd.h>
43
44 #include "main.h"
45
46 static char fpath[1024];
47 static int fpath_initialized;
48 static fhandle_t fh;
49
50 int
priv_vfs_fhopen_setup(int asroot,int injail,struct test * test)51 priv_vfs_fhopen_setup(int asroot, int injail, struct test *test)
52 {
53
54 setup_file("private_vfs_fhopen_setup: fpath", fpath, UID_ROOT,
55 GID_WHEEL, 0644);
56 fpath_initialized = 1;
57 if (getfh(fpath, &fh) < 0) {
58 warn("priv_vfs_fhopen_setup: getfh(%s)", fpath);
59 return (-1);
60 }
61 return (0);
62 }
63
64 void
priv_vfs_fhopen(int asroot,int injail,struct test * test)65 priv_vfs_fhopen(int asroot, int injail, struct test *test)
66 {
67 int errno_saved, error, fd;
68
69 fd = fhopen(&fh, O_RDONLY);
70 if (fd >= 0) {
71 error = 0;
72 errno_saved = errno;
73 close(fd);
74 errno = errno_saved;
75 } else
76 error = -1;
77 if (asroot && injail)
78 expect("priv_vfs_fhopen(asroot, injail)", error, -1, EPERM);
79 if (asroot && !injail)
80 expect("priv_vfs_fhopen(asroot, !injail)", error, 0, 0);
81 if (!asroot && injail)
82 expect("priv_vfs_fhopen(!asroot, injail)", error, -1, EPERM);
83 if (!asroot && !injail)
84 expect("priv_vfs_fhopen(!asroot, !injail)", error, -1, EPERM);
85 }
86
87 void
priv_vfs_fhopen_cleanup(int asroot,int injail,struct test * test)88 priv_vfs_fhopen_cleanup(int asroot, int injail, struct test *test)
89 {
90
91 if (fpath_initialized) {
92 (void)unlink(fpath);
93 fpath_initialized = 0;
94 }
95 }
96