1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 The FreeBSD Foundation
5 *
6 * This software was developed by BFF Storage Systems, LLC under sponsorship
7 * from the FreeBSD Foundation.
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 OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31/*
32 * Tests for the "default_permissions" mount option that require a privileged
33 * user.
34 */
35
36extern "C" {
37#include <sys/types.h>
38#include <sys/extattr.h>
39
40#include <fcntl.h>
41#include <unistd.h>
42}
43
44#include "mockfs.hh"
45#include "utils.hh"
46
47using namespace testing;
48
49class DefaultPermissionsPrivileged: public FuseTest {
50virtual void SetUp() {
51	m_default_permissions = true;
52	FuseTest::SetUp();
53	if (HasFatalFailure() || IsSkipped())
54		return;
55
56	if (geteuid() != 0) {
57		GTEST_SKIP() << "This test requires a privileged user";
58	}
59
60	/* With -o default_permissions, FUSE_ACCESS should never be called */
61	EXPECT_CALL(*m_mock, process(
62		ResultOf([=](auto in) {
63			return (in.header.opcode == FUSE_ACCESS);
64		}, Eq(true)),
65		_)
66	).Times(0);
67}
68
69public:
70void expect_getattr(uint64_t ino, mode_t mode, uint64_t attr_valid, int times,
71	uid_t uid = 0, gid_t gid = 0)
72{
73	EXPECT_CALL(*m_mock, process(
74		ResultOf([=](auto in) {
75			return (in.header.opcode == FUSE_GETATTR &&
76				in.header.nodeid == ino);
77		}, Eq(true)),
78		_)
79	).Times(times)
80	.WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) {
81		SET_OUT_HEADER_LEN(out, attr);
82		out.body.attr.attr.ino = ino;	// Must match nodeid
83		out.body.attr.attr.mode = mode;
84		out.body.attr.attr.size = 0;
85		out.body.attr.attr.uid = uid;
86		out.body.attr.attr.gid = gid;
87		out.body.attr.attr_valid = attr_valid;
88	})));
89}
90
91void expect_lookup(const char *relpath, uint64_t ino, mode_t mode,
92	uint64_t attr_valid, uid_t uid = 0, gid_t gid = 0)
93{
94	FuseTest::expect_lookup(relpath, ino, mode, 0, 1, attr_valid, uid, gid);
95}
96
97};
98
99class Setattr: public DefaultPermissionsPrivileged {};
100
101TEST_F(Setattr, sticky_regular_file)
102{
103	const char FULLPATH[] = "mountpoint/some_file.txt";
104	const char RELPATH[] = "some_file.txt";
105	const uint64_t ino = 42;
106	const mode_t oldmode = 0644;
107	const mode_t newmode = 01644;
108
109	expect_getattr(1, S_IFDIR | 0755, UINT64_MAX, 1);
110	expect_lookup(RELPATH, ino, S_IFREG | oldmode, UINT64_MAX, geteuid());
111	EXPECT_CALL(*m_mock, process(
112		ResultOf([](auto in) {
113			return (in.header.opcode == FUSE_SETATTR);
114		}, Eq(true)),
115		_)
116	).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) {
117		SET_OUT_HEADER_LEN(out, attr);
118		out.body.attr.attr.mode = S_IFREG | newmode;
119	})));
120
121	EXPECT_EQ(0, chmod(FULLPATH, newmode)) << strerror(errno);
122}
123
124
125