1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 * $FreeBSD$
31 */
32
33/*
34 * Tests for the "default_permissions" mount option that require a privileged
35 * user.
36 */
37
38extern "C" {
39#include <sys/types.h>
40#include <sys/extattr.h>
41
42#include <fcntl.h>
43#include <unistd.h>
44}
45
46#include "mockfs.hh"
47#include "utils.hh"
48
49using namespace testing;
50
51class DefaultPermissionsPrivileged: public FuseTest {
52virtual void SetUp() {
53	m_default_permissions = true;
54	FuseTest::SetUp();
55	if (HasFatalFailure() || IsSkipped())
56		return;
57
58	if (geteuid() != 0) {
59		GTEST_SKIP() << "This test requires a privileged user";
60	}
61
62	/* With -o default_permissions, FUSE_ACCESS should never be called */
63	EXPECT_CALL(*m_mock, process(
64		ResultOf([=](auto in) {
65			return (in.header.opcode == FUSE_ACCESS);
66		}, Eq(true)),
67		_)
68	).Times(0);
69}
70
71public:
72void expect_getattr(uint64_t ino, mode_t mode, uint64_t attr_valid, int times,
73	uid_t uid = 0, gid_t gid = 0)
74{
75	EXPECT_CALL(*m_mock, process(
76		ResultOf([=](auto in) {
77			return (in.header.opcode == FUSE_GETATTR &&
78				in.header.nodeid == ino);
79		}, Eq(true)),
80		_)
81	).Times(times)
82	.WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) {
83		SET_OUT_HEADER_LEN(out, attr);
84		out.body.attr.attr.ino = ino;	// Must match nodeid
85		out.body.attr.attr.mode = mode;
86		out.body.attr.attr.size = 0;
87		out.body.attr.attr.uid = uid;
88		out.body.attr.attr.gid = gid;
89		out.body.attr.attr_valid = attr_valid;
90	})));
91}
92
93void expect_lookup(const char *relpath, uint64_t ino, mode_t mode,
94	uint64_t attr_valid, uid_t uid = 0, gid_t gid = 0)
95{
96	FuseTest::expect_lookup(relpath, ino, mode, 0, 1, attr_valid, uid, gid);
97}
98
99};
100
101class Setattr: public DefaultPermissionsPrivileged {};
102
103TEST_F(Setattr, sticky_regular_file)
104{
105	const char FULLPATH[] = "mountpoint/some_file.txt";
106	const char RELPATH[] = "some_file.txt";
107	const uint64_t ino = 42;
108	const mode_t oldmode = 0644;
109	const mode_t newmode = 01644;
110
111	expect_getattr(1, S_IFDIR | 0755, UINT64_MAX, 1);
112	expect_lookup(RELPATH, ino, S_IFREG | oldmode, UINT64_MAX, geteuid());
113	EXPECT_CALL(*m_mock, process(
114		ResultOf([](auto in) {
115			return (in.header.opcode == FUSE_SETATTR);
116		}, Eq(true)),
117		_)
118	).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) {
119		SET_OUT_HEADER_LEN(out, attr);
120		out.body.attr.attr.mode = S_IFREG | newmode;
121	})));
122
123	EXPECT_EQ(0, chmod(FULLPATH, newmode)) << strerror(errno);
124}
125
126
127