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: stable/12/tests/sys/fs/fusefs/default_permissions_privileged.cc 361406 2020-05-22 22:13:55Z asomers $
31 */
32
33 /*
34 * Tests for the "default_permissions" mount option that require a privileged
35 * user.
36 */
37
38 extern "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
49 using namespace testing;
50
51 class DefaultPermissionsPrivileged: public FuseTest {
SetUp()52 virtual 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
71 public:
expect_getattr(uint64_t ino,mode_t mode,uint64_t attr_valid,int times,uid_t uid=0,gid_t gid=0)72 void 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
expect_lookup(const char * relpath,uint64_t ino,mode_t mode,uint64_t attr_valid,uid_t uid=0,gid_t gid=0)93 void 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
101 class Setattr: public DefaultPermissionsPrivileged {};
102
TEST_F(Setattr,sticky_regular_file)103 TEST_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