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fusefs: adapt the tests to the fuse => fusefs rename
[FreeBSD/FreeBSD.git] / tests / sys / fs / fusefs / readlink.cc
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
31 extern "C" {
32 #include <sys/param.h>
33
34 #include <unistd.h>
35 }
36
37 #include "mockfs.hh"
38 #include "utils.hh"
39
40 using namespace testing;
41
42 class Readlink: public FuseTest {
43 public:
44 void expect_lookup(const char *relpath, uint64_t ino)
45 {
46         FuseTest::expect_lookup(relpath, ino, S_IFLNK | 0777, 0, 1);
47 }
48 void expect_readlink(uint64_t ino, ProcessMockerT r)
49 {
50         EXPECT_CALL(*m_mock, process(
51                 ResultOf([=](auto in) {
52                         return (in->header.opcode == FUSE_READLINK &&
53                                 in->header.nodeid == ino);
54                 }, Eq(true)),
55                 _)
56         ).WillOnce(Invoke(r));
57 }
58
59 };
60
61 class PushSymlinksIn: public Readlink {
62         virtual void SetUp() {
63                 m_push_symlinks_in = true;
64                 Readlink::SetUp();
65         }
66 };
67
68 TEST_F(Readlink, eloop)
69 {
70         const char FULLPATH[] = "mountpoint/src";
71         const char RELPATH[] = "src";
72         const uint64_t ino = 42;
73         char buf[80];
74
75         expect_lookup(RELPATH, ino);
76         expect_readlink(ino, ReturnErrno(ELOOP));
77
78         EXPECT_EQ(-1, readlink(FULLPATH, buf, sizeof(buf)));
79         EXPECT_EQ(ELOOP, errno);
80 }
81
82 TEST_F(Readlink, ok)
83 {
84         const char FULLPATH[] = "mountpoint/src";
85         const char RELPATH[] = "src";
86         const char dst[] = "dst";
87         const uint64_t ino = 42;
88         char buf[80];
89
90         expect_lookup(RELPATH, ino);
91         expect_readlink(ino, ReturnImmediate([=](auto in __unused, auto out) {
92                 strlcpy(out->body.str, dst, sizeof(out->body.str));
93                 out->header.len = sizeof(out->header) + strlen(dst) + 1;
94         }));
95
96         EXPECT_EQ((ssize_t)strlen(dst) + 1,
97                   readlink(FULLPATH, buf, sizeof(buf)));
98         EXPECT_STREQ(dst, buf);
99 }
100
101 TEST_F(PushSymlinksIn, readlink)
102 {
103         const char FULLPATH[] = "mountpoint/src";
104         const char RELPATH[] = "src";
105         const char dst[] = "/dst";
106         const uint64_t ino = 42;
107         char buf[MAXPATHLEN], wd[MAXPATHLEN], want[MAXPATHLEN];
108         int len;
109
110         expect_lookup(RELPATH, ino);
111         expect_readlink(ino, ReturnImmediate([=](auto in __unused, auto out) {
112                 strlcpy(out->body.str, dst, sizeof(out->body.str));
113                 out->header.len = sizeof(out->header) + strlen(dst) + 1;
114         }));
115
116         ASSERT_NE(NULL, getcwd(wd, sizeof(wd))) << strerror(errno);
117         len = snprintf(want, sizeof(want), "%s/mountpoint%s", wd, dst);
118         ASSERT_LE(0, len) << strerror(errno);
119
120         EXPECT_EQ((ssize_t)len + 1, readlink(FULLPATH, buf, sizeof(buf)));
121         EXPECT_STREQ(want, buf);
122 }