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
46static char fpath[1024];
47static int fpath_initialized;
48static fhandle_t fh;
49
50int
51priv_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
64void
65priv_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
87void
88priv_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