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 extern "C" {
32 #include <fcntl.h>
33 #include <semaphore.h>
34 }
35
36 #include "mockfs.hh"
37 #include "utils.hh"
38
39 using namespace testing;
40
41 class Rmdir: public FuseTest {
42 public:
expect_lookup(const char * relpath,uint64_t ino,int times=1)43 void expect_lookup(const char *relpath, uint64_t ino, int times=1)
44 {
45 EXPECT_LOOKUP(FUSE_ROOT_ID, relpath)
46 .Times(times)
47 .WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
48 SET_OUT_HEADER_LEN(out, entry);
49 out.body.entry.attr_valid = UINT64_MAX;
50 out.body.entry.attr.mode = S_IFDIR | 0755;
51 out.body.entry.nodeid = ino;
52 out.body.entry.attr.nlink = 2;
53 })));
54 }
55
expect_rmdir(uint64_t parent,const char * relpath,int error)56 void expect_rmdir(uint64_t parent, const char *relpath, int error)
57 {
58 EXPECT_CALL(*m_mock, process(
59 ResultOf([=](auto in) {
60 return (in.header.opcode == FUSE_RMDIR &&
61 0 == strcmp(relpath, in.body.rmdir) &&
62 in.header.nodeid == parent);
63 }, Eq(true)),
64 _)
65 ).WillOnce(Invoke(ReturnErrno(error)));
66 }
67 };
68
69 /*
70 * A successful rmdir should clear the parent directory's attribute cache,
71 * because the fuse daemon should update its mtime and ctime
72 */
TEST_F(Rmdir,parent_attr_cache)73 TEST_F(Rmdir, parent_attr_cache)
74 {
75 const char FULLPATH[] = "mountpoint/some_dir";
76 const char RELPATH[] = "some_dir";
77 struct stat sb;
78 sem_t sem;
79 uint64_t ino = 42;
80 Sequence seq;
81
82 ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno);
83
84 expect_lookup(RELPATH, ino);
85 EXPECT_CALL(*m_mock, process(
86 ResultOf([=](auto in) {
87 return (in.header.opcode == FUSE_RMDIR &&
88 0 == strcmp(RELPATH, in.body.rmdir) &&
89 in.header.nodeid == FUSE_ROOT_ID);
90 }, Eq(true)),
91 _)
92 ).InSequence(seq)
93 .WillOnce(Invoke(ReturnErrno(0)));
94 expect_forget(ino, 1, &sem);
95 EXPECT_CALL(*m_mock, process(
96 ResultOf([=](auto in) {
97 return (in.header.opcode == FUSE_GETATTR &&
98 in.header.nodeid == FUSE_ROOT_ID);
99 }, Eq(true)),
100 _)
101 ).InSequence(seq)
102 .WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) {
103 SET_OUT_HEADER_LEN(out, attr);
104 out.body.attr.attr.ino = FUSE_ROOT_ID;
105 out.body.attr.attr.mode = S_IFDIR | 0755;
106 out.body.attr.attr_valid = UINT64_MAX;
107 })));
108
109 ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
110 EXPECT_EQ(0, stat("mountpoint", &sb)) << strerror(errno);
111 sem_wait(&sem);
112 sem_destroy(&sem);
113 }
114
TEST_F(Rmdir,enotempty)115 TEST_F(Rmdir, enotempty)
116 {
117 const char FULLPATH[] = "mountpoint/some_dir";
118 const char RELPATH[] = "some_dir";
119 uint64_t ino = 42;
120
121 expect_lookup(RELPATH, ino);
122 expect_rmdir(FUSE_ROOT_ID, RELPATH, ENOTEMPTY);
123
124 ASSERT_NE(0, rmdir(FULLPATH));
125 ASSERT_EQ(ENOTEMPTY, errno);
126 }
127
128 /* Removing a directory should expire its entry cache */
TEST_F(Rmdir,entry_cache)129 TEST_F(Rmdir, entry_cache)
130 {
131 const char FULLPATH[] = "mountpoint/some_dir";
132 const char RELPATH[] = "some_dir";
133 sem_t sem;
134 uint64_t ino = 42;
135
136 expect_lookup(RELPATH, ino, 2);
137 expect_rmdir(FUSE_ROOT_ID, RELPATH, 0);
138 expect_forget(ino, 1, &sem);
139
140 ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
141 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
142 sem_wait(&sem);
143 sem_destroy(&sem);
144 }
145
TEST_F(Rmdir,ok)146 TEST_F(Rmdir, ok)
147 {
148 const char FULLPATH[] = "mountpoint/some_dir";
149 const char RELPATH[] = "some_dir";
150 sem_t sem;
151 uint64_t ino = 42;
152
153 ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno);
154
155 expect_lookup(RELPATH, ino);
156 expect_rmdir(FUSE_ROOT_ID, RELPATH, 0);
157 expect_forget(ino, 1, &sem);
158
159 ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
160 sem_wait(&sem);
161 sem_destroy(&sem);
162 }
163