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
33extern "C" {
34#include <fcntl.h>
35#include <semaphore.h>
36}
37
38#include "mockfs.hh"
39#include "utils.hh"
40
41using namespace testing;
42
43class Rmdir: public FuseTest {
44public:
45void expect_lookup(const char *relpath, uint64_t ino, int times=1)
46{
47	EXPECT_LOOKUP(FUSE_ROOT_ID, relpath)
48	.Times(times)
49	.WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
50		SET_OUT_HEADER_LEN(out, entry);
51		out.body.entry.attr_valid = UINT64_MAX;
52		out.body.entry.attr.mode = S_IFDIR | 0755;
53		out.body.entry.nodeid = ino;
54		out.body.entry.attr.nlink = 2;
55	})));
56}
57
58void expect_rmdir(uint64_t parent, const char *relpath, int error)
59{
60	EXPECT_CALL(*m_mock, process(
61		ResultOf([=](auto in) {
62			return (in.header.opcode == FUSE_RMDIR &&
63				0 == strcmp(relpath, in.body.rmdir) &&
64				in.header.nodeid == parent);
65		}, Eq(true)),
66		_)
67	).WillOnce(Invoke(ReturnErrno(error)));
68}
69};
70
71/*
72 * A successful rmdir should clear the parent directory's attribute cache,
73 * because the fuse daemon should update its mtime and ctime
74 */
75TEST_F(Rmdir, parent_attr_cache)
76{
77	const char FULLPATH[] = "mountpoint/some_dir";
78	const char RELPATH[] = "some_dir";
79	struct stat sb;
80	sem_t sem;
81	uint64_t ino = 42;
82	Sequence seq;
83
84	ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno);
85
86	expect_lookup(RELPATH, ino);
87	EXPECT_CALL(*m_mock, process(
88		ResultOf([=](auto in) {
89			return (in.header.opcode == FUSE_RMDIR &&
90				0 == strcmp(RELPATH, in.body.rmdir) &&
91				in.header.nodeid == FUSE_ROOT_ID);
92		}, Eq(true)),
93		_)
94	).InSequence(seq)
95	.WillOnce(Invoke(ReturnErrno(0)));
96	expect_forget(ino, 1, &sem);
97	EXPECT_CALL(*m_mock, process(
98		ResultOf([=](auto in) {
99			return (in.header.opcode == FUSE_GETATTR &&
100				in.header.nodeid == FUSE_ROOT_ID);
101		}, Eq(true)),
102		_)
103	).InSequence(seq)
104	.WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) {
105		SET_OUT_HEADER_LEN(out, attr);
106		out.body.attr.attr.ino = FUSE_ROOT_ID;
107		out.body.attr.attr.mode = S_IFDIR | 0755;
108		out.body.attr.attr_valid = UINT64_MAX;
109	})));
110
111	ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
112	EXPECT_EQ(0, stat("mountpoint", &sb)) << strerror(errno);
113	sem_wait(&sem);
114	sem_destroy(&sem);
115}
116
117TEST_F(Rmdir, enotempty)
118{
119	const char FULLPATH[] = "mountpoint/some_dir";
120	const char RELPATH[] = "some_dir";
121	uint64_t ino = 42;
122
123	expect_lookup(RELPATH, ino);
124	expect_rmdir(FUSE_ROOT_ID, RELPATH, ENOTEMPTY);
125
126	ASSERT_NE(0, rmdir(FULLPATH));
127	ASSERT_EQ(ENOTEMPTY, errno);
128}
129
130/* Removing a directory should expire its entry cache */
131TEST_F(Rmdir, entry_cache)
132{
133	const char FULLPATH[] = "mountpoint/some_dir";
134	const char RELPATH[] = "some_dir";
135	sem_t sem;
136	uint64_t ino = 42;
137
138	expect_lookup(RELPATH, ino, 2);
139	expect_rmdir(FUSE_ROOT_ID, RELPATH, 0);
140	expect_forget(ino, 1, &sem);
141
142	ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
143	ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
144	sem_wait(&sem);
145	sem_destroy(&sem);
146}
147
148TEST_F(Rmdir, ok)
149{
150	const char FULLPATH[] = "mountpoint/some_dir";
151	const char RELPATH[] = "some_dir";
152	sem_t sem;
153	uint64_t ino = 42;
154
155	ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno);
156
157	expect_lookup(RELPATH, ino);
158	expect_rmdir(FUSE_ROOT_ID, RELPATH, 0);
159	expect_forget(ino, 1, &sem);
160
161	ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
162	sem_wait(&sem);
163	sem_destroy(&sem);
164}
165